Grade "A" Pasteurized Milk Ordinance (2003 Revision)

Standards For Grade "A" Pasteurized, Ultra-Pasteurized and Aseptically Processed Milk and Milk Products

(Table of Contents)

Milk plants shall comply with all Items of this Section.

A receiving station shall comply with Items 1p to 15p, inclusive, and 17p, 20p and 22p, except that the partitioning requirement of Item 5p shall not apply.

A transfer station shall comply with Items 1p, 4p, 6p, 7p, 8p, 9p, 10p, 11p, 12p, 14p, 15p, 17p, 20p and 22p and as climatic and operating conditions require the applicable provisions of Items 2p and 3p.Provided, that in every case, overhead protection shall be provided.

Facilities for the cleaning and sanitizing of milk tank trucks shall comply with Items 1p, 4p, 6p, 7p, 8p, 9p, 10p, 11p, 12p, 14p, 15p, 20p and 22p and as climatic and operating conditions require, the applicable provisions of Items 2p and 3p. Provided, that in every case, overhead protection shall be provided.

In the case of milk plants, receiving stations and transfer stations, which have HACCP Systems regulated under Appendix K. of this Ordinance, the HACCP System shall address the public health concerns described in this Section in a manner that provides protection equivalent to the requirements in this Section.

Milk plants that have HACCP Systems, which are regulated under the NCIMS HACCP Program, shall comply with all of the requirements of Item 16p. Pasteurization and Aseptic Processing of this Ordinance, and pasteurization shall be managed as a CCP as described in Appendix H. MILK AND MILK PRODUCT CONTINUOUS-FLOW (HTST AND HHST) PASTEURIZATION---CCP MODEL HACCP PLAN SUMMARY; and MILK AND MILK PRODUCT VAT (BATCH) PASTEURIZATION---CCP MODEL HACCP PLAN SUMMARY.

 

ITEM 1p. FLOORS - CONSTRUCTION

The floors of all rooms in which milk or milk products are handled, processed, packaged, or stored; or in which milk containers, utensils and/or equipment are washed, shall be constructed of concrete or other equally impervious and easily cleanable material; and shall be smooth, properly sloped, provided with trapped drains and kept in good repair. Provided, that cold-storage rooms used for storing milk and milk products need not be provided with floor drains when the floors are sloped to drain to one (1) or more exits. Provided further, that storage rooms for storing dry ingredients, packaged dry ingredients, packaged dry milk or milk products, and/or packaging materials need not be provided with drains and the floors may be constructed of tightly joined wood.

PUBLIC HEALTH REASON

Floors constructed of concrete or other similarly impervious material can be kept clean more easily than floors constructed of wood or other pervious or easily disintegrating material. They will not absorb organic matter and are; therefore, more apt to be kept clean and free of odors. Properly sloped floors facilitate flushing and help to avoid undesirable conditions. Trapping of drains prevents sewer gas from entering the milk plant.

ADMINISTRATIVE PROCEDURES

This Item is deemed to be satisfied when:

1. The floors of all rooms in which milk or milk products are handled, processed, packaged, or stored; or in which milk containers, utensils, and/or equipment are washed, are constructed of good quality concrete, or equally impervious tile or brick laid closely with impervious joint material, or metal surfacing with impervious joints, or other material which is the equivalent of good quality concrete. The floors of storage rooms for dry ingredients and/or packaging material may be constructed of tightly joined wood.
2. The floor surface is smooth and sloped, so that there are no pools of standing water after flushing, and the joints between the floor and the walls are impervious.
3. The floors are provided with trapped drains. Cold-storage rooms used for storing milk and milk products need not be provided with floor drains when the floors are sloped to drain to one or more exits. Storage rooms for dry ingredients, dry packaged milk or milk products, and/or packaging materials need not be provided with drains.

NOTE: Refer to Item 11p for requirements for floors of drying chambers.

 

ITEM 2p.WALLS AND CEILINGS - CONSTRUCTION

Walls and ceilings of rooms in which milk or milk products are handled, processed, packaged, or stored; or in which milk containers, utensils and/or equipment are washed, shall have a smooth, washable, light-colored surface and be in good repair.

PUBLIC HEALTH REASON

Properly finished walls and ceilings are more easily kept clean and are; therefore, more apt to be kept clean. A light-colored finish aids in the even distribution of light and the detection of unclean conditions.

ADMINISTRATIVE PROCEDURES

This Item is deemed to be satisfied when:

1. Walls and ceilings are finished with smooth, washable, light-colored impervious materials.
2. Walls, partitions, windows and ceilings are kept in good repair.

NOTE: Refer to Item 11p for requirements for walls for drying chambers. Storage rooms used for the storage of packaged dry milk or milk products are exempt from the ceiling requirements of this Item.

 

ITEM 3p. DOORS AND WINDOWS

Effective means shall be provided to prevent the access of insects and rodents. All openings to the outside shall have solid doors or glazed windows, which shall be closed during dusty weather.

PUBLIC HEALTH REASON

Freedom from insects in the milk plant reduces the likelihood of contamination of the milk or milk product. (Refer to Item 7r-Public Health Reason for information on disease transmission by flies.)

ADMINISTRATIVE PROCEDURES

This item is deemed to be satisfied when:

1. All openings to the outer air are effectively protected by:
   1. Screening; or
   2. Effective electric screen panels; or
   3. Fans or air curtains which provide sufficient air velocity so as to prevent the entrance of insects; or
   4. Properly constructed flaps where it is impractical to use self-closing doors or air curtains; or
   5. Any effective combination of a, b, c, or d or by any other method which prevents the entrance of insects.
2. All outer doors are tight and self-closing. Screen doors shall open outward.
3. All outer openings are rodent-proofed to the extent necessary to prevent the entry of rodents.

NOTE: The evidence of insects and/or rodents in the milk plant shall be considered under Item 9p.

 

ITEM 4p.LIGHTING AND VENTILATION

All rooms in which milk or milk products are handled, processed, packaged, or stored; or in which milk containers, utensils and/or equipment are washed shall be well lighted and well ventilated.

PUBLIC HEALTH REASON

Ample light promotes cleanliness. Proper ventilation reduces odors and prevents condensation upon interior surfaces.

ADMINISTRATIVE PROCEDURES

This Item is deemed to be satisfied when:

1. Adequate light sources are provided (natural, artificial or a combination of both) which furnish at least twenty (20) foot-candles (220 lux) of light in all working areas. This shall apply to all rooms where milk or milk products are handled, processed, packaged, or stored; or where containers, utensils and/or equipment are washed. Dry storage and cold storage rooms shall be provided with at least five (5) foot-candles (55 lux) of light.
2. Ventilation in all rooms is sufficient to keep them reasonably free of odors and excessive condensation on equipment, walls and ceilings.
3. Pressurized ventilating systems, if used, have a filtered air intake.
4. For milk plants that condense and/or dry milk or milk products, ventilating systems in packaging rooms, where used, are separate systems and where possible have the ducts installed in a vertical position.

 

ITEM 5p. SEPARATE ROOMS

There shall be separate rooms for:

1. The pasteurizing, processing, cooling, reconstitution, condensing, drying and packaging of milk and milk products.
2. Packaging of dry milk or milk products.
3. The cleaning of milk cans and containers, bottles, cases and dry milk or milk product containers.
4. The fabrication of containers and closures for milk and milk products.
5. Cleaning and sanitizing facilities for milk tank trucks in milk plants receiving milk or whey in such tanks.
6. Receiving cans of milk and milk products in milk plants receiving such cans.

Rooms in which milk or milk products are handled, processed, stored, condensed, dried and packaged, or in which containers, utensils and/or equipment are washed or stored, shall not open directly into any stable or any room used for domestic purposes. All rooms shall be of sufficient size for their intended purposes.

Designated areas or rooms shall be provided for the receiving, handling and storage of returned packaged milk and milk products.

PUBLIC HEALTH REASON

If the washing and sanitization of containers are conducted in the same room in which the pasteurizing, processing, cooling, condensing, drying or packaging is done, there is opportunity for the pasteurized product to become contaminated. For this reason, separate rooms are required as indicated. The unloading of cans of raw milk directly into the pasteurizing room is apt to increase the prevalence of insects therein, as well as to render it too public.

ADMINISTRATIVE PROCEDURES⁷

This Item is deemed to be satisfied when:

1. Pasteurizing, processing, reconstitution, cooling, condensing, drying and packaging of milk and milk products are conducted in a single room(s), but not in the same room(s) used for the cleaning of milk cans, portable storage bins, bottles and cases, or the unloading and/or cleaning and sanitizing of milk tank trucks, provided that these rooms may be separated by solid partitioning doors that are kept closed. Provided further, that cooling, plate or tubular, may be done in the room where milk tank trucks are unloaded and/or cleaned and sanitized. Separation/clarification of raw milk may be done in an enclosed room where milk tank trucks are unloaded and/or cleaned and sanitized.

   NOTE: Packaging of dry milk or milk products shall be conducted in a separate room.

2. All returned packaged milk and milk products, which have physically left the premises of the processing milk plant, shall be received, handled and stored in separate areas or rooms isolated from the Grade "A" dairy operations. Such separate areas or rooms shall be clearly defined and marked for such use.
3. All bulk milk and milk product storage tanks are vented into a room used for pasteurization, processing, cooling or packaging operations or into a storage tank gallery room. Provided, that vents located elsewhere, which are adequately equipped with air filters so as to preclude the contamination of the milk or milk product shall be considered satisfactory.
4. Facilities for the cleaning and sanitizing of milk tank trucks are properly equipped for manual and/or mechanical operations. When such facilities are not provided on the milk plant premises, these operations shall be performed at a receiving station, transfer station or separate milk tank truck cleaning facility. Items relating to facilities for cleaning and sanitizing milk tank trucks are listed at the beginning of this Section.
5. Rooms in which milk or milk products are handled, processed or stored; or in which milk containers, utensils and/or equipment are washed or stored, do not open directly into any stable or any room used for domestic purposes.
6. All rooms shall be of sufficient size for their intended purposes.

 

ITEM 6p. TOILET-SEWAGE DISPOSAL FACILITIES

Every milk plant shall be provided with toilet facilities conforming to the regulations of the ... of ...¹ Toilet rooms shall not open directly into any room in which milk and/or milk products are processed. Toilet rooms shall be completely enclosed and shall have tight-fitting, self-closing doors. Dressing rooms, toilet rooms and fixtures shall be kept in a clean condition, in good repair and shall be well ventilated and well lighted. Sewage and other liquid wastes shall be disposed of in a sanitary manner.

PUBLIC HEALTH REASON

Human excreta are potentially dangerous and must be disposed of in a sanitary manner. The organisms causing typhoid fever, para-typhoid fever and dysentery may be present in the body discharges of active cases or carriers. Sanitary toilet facilities are necessary to protect the milk or milk product, containers, utensils and equipment from fecal contamination, which may be carried by insects, hands or clothing. When the toilet facilities are of a satisfactory type, are kept clean and are in good repair, the opportunities for the spread of contamination by the above means are minimized. The provision of an intervening room or vestibule between the toilet room and any room in which milk or milk products are processed, condensed or dried makes it less likely that contaminated insects will enter these rooms. It will also minimize the spread of odors.

The wastes resulting from the cleaning and rinsing of containers, utensils, equipment and floors, from flush toilets, and from washing facilities, should be properly disposed of so as not to contaminate the milk containers, utensils or equipment, or to create a nuisance or a public health hazard.

ADMINISTRATIVE PROCEDURES

This Item is deemed to be satisfied when:

1. The milk plant is provided with toilet facilities conforming to the regulations of the ... of ...¹
2. Toilet rooms do not open directly into any room in which milk and/or milk products are processed, condensed or dried.
3. Toilet rooms are completely enclosed and have tight-fitting, self-closing doors.
4. Dressing rooms, toilet rooms and fixtures are kept in a clean condition, in good repair and are well ventilated and well lighted.
5. Toilet tissue and easily cleanable covered waste receptacles are provided in toilet rooms.
6. All plumbing is installed to meet the applicable provisions of the State or local plumbing code.
7. Sewage and other liquid wastes are disposed of in a sanitary manner.
8. Non-water-carried sewage disposal facilities are not used.

 

ITEM 7p.WATER SUPPLY

Water for milk plant purposes shall be from a supply properly located, protected and operated and shall be easily accessible, adequate and of a safe, sanitary quality.

PUBLIC HEALTH REASON

The water supply should be accessible in order to encourage its use in cleaning operations; it should be adequate so that cleaning and rinsing may be thorough; and it should be of a safe, sanitary quality in order to avoid the contamination of containers, utensils and equipment.

ADMINISTRATIVE PROCEDURES⁸

This Item is deemed to be satisfied when:

1. Water for milk plant purposes is from an adequate supply, properly located, protected and operated. It shall be easily accessible and of a safe, sanitary quality.
2. The water supply is approved as safe by the State Water Control Authority and, in the case of individual water systems, complies with the specification outlined in Appendix D. and the Bacteriological Standards outlined in Appendix G.
3. There is no cross-connection between the safe water supply and any unsafe or questionable water supply, or any source of pollution through which the safe water supply might become contaminated. A connection between the water supply piping and a make-up tank, such as for cooling or condensing, unless protected by an air gap or effective backflow preventer, constitutes a violation of this requirement. An approved air gap is defined as the unobstructed vertical distance through the free atmosphere of at least twice the diameter of the largest incoming water supply pipe or faucet to the flood level of the vessel or receptacle. The distance of the air gap is to be measured from the bottom of the potable inlet supply pipe or faucet to the top of the effective overflow, i.e., flood level rim or internal overflow, of the vessel. In no case, may the effective air gap be less than one (1) inch (2.54 cm).
4. Condensing water for milk or milk product evaporators, and water used to produce vacuum and/or to condense vapors in vacuum heat processing equipment, is from a source complying with Item 2 above. Provided, that when approved by the Regulatory Agency, water from sources not complying with Item 2 above, may be used when the evaporator or vacuum heat equipment is constructed and operated to preclude contamination of such equipment, or its contents, by condensing water or by water used to produce vacuum. Means of preventing such contamination are:
   1. Use of a surface type condenser in which the condensing water is physically separated from the vapors and condensate; or
   2. Use of reliable safeguards to prevent the overflow of condensing water from the condenser into the evaporator. Such safeguards include a barometric leg extending at least thirty-five (35) feet vertically from the invert of the outgoing condensing water line to the free level at which the leg discharges, or a safety shutoff valve, located on the water feed line to the condenser, automatically actuated by a control which will shut off the in-flowing water when the water level rises above a predetermined point in the condenser. This valve may be actuated by water, air or electricity, and shall be designed so that failure of the primary motivating power will automatically stop the flow of water into the condenser.
5. Condensing water for milk or milk product evaporators, complying with Item 2 above, and water reclaimed from milk or milk products may be reused when all necessary means of protection are afforded and it complies with the procedures outlined in Appendix D., Part V.
6. New individual water supplies and water supply systems, which have been repaired or otherwise become contaminated, are disinfected before being placed in use. (Refer to Appendix D.) The supply shall be made free of the disinfectant by pumping to waste before any sample for bacteriological testing shall be collected.
7. Samples for bacteriological testing of individual water supplies are taken upon the initial approval of the physical structure; each six (6) months thereafter; and when any repair or alteration of the water supply system has been made. Samples shall be taken by the Regulatory Agency and examinations shall be conducted in an official laboratory. To determine if water samples have been taken at the frequency established in this Section, the interval shall include the designated six (6) month period plus the remaining days of the month in which the sample is due.
8. Current records of water test results are retained on file with the Regulatory Agency or as the Regulatory Agency directs.
9. A potable water supply, which meets the criteria of this Section, may be connected to the product feed line of a steam vacuum evaporator, provided that the water supply is protected at the point of connection by an approved backflow prevention device.

 

ITEM 8p. HANDWASHING FACILITIES

Convenient handwashing facilities shall be provided, including hot and cold and/or warm running water, soap and individual sanitary towels or other approved hand-drying devices. Handwashing facilities shall be kept in a clean condition and in good repair.

PUBLIC HEALTH REASON

Proper use of handwashing facilities is essential to personal cleanliness and reduces the likelihood of contamination of milk and milk products.

ADMINISTRATIVE PROCEDURES

This Item is deemed to be satisfied when:

1. Convenient handwashing facilities are provided, including hot and cold and/or warm running water, soap and individual sanitary towels or other approved hand-drying devices.
2. Handwashing facilities are convenient to all toilets and to all rooms in which milk plant operations are conducted.
3. Handwashing facilities are kept in a clean condition and in good repair.
4. Steam-water mixing valves and vats for washing bottles, cans and similar equipment are not used as handwashing facilities.

 

ITEM 9p. MILK PLANT CLEANLINESS

All rooms in which milk and milk products are handled, processed or stored; or in which containers, utensils and/or equipment are washed or stored, shall be kept clean, neat and free of evidence of insects and rodents. Only equipment directly related to processing operations or the handling of containers, utensils and equipment shall be permitted in the pasteurizing, processing, cooling, condensing, drying, packaging, and bulk milk or milk product storage rooms.

PUBLIC HEALTH REASON

Clean floors, free of litter, clean walls, ceilings and all other areas of the milk plant are conducive to clean milk and milk product handling operations. Cleanliness and freedom from insects and rodents reduces the likelihood of contamination of the milk or milk product. Excess or unused equipment or equipment not directly related to the milk plant operations can be detrimental to the cleanliness of the milk plant.

ADMINISTRATIVE PROCEDURES

This Item is deemed to be satisfied when:

1. Only equipment directly related to processing operations or the handling of containers, utensils and equipment is permitted in the pasteurizing, processing, cooling, condensing, drying, packaging, and bulk milk or milk product storage rooms.
2. All piping, floors, walls, ceilings, fans, shelves, tables and the non-product-contact surfaces of other facilities and equipment are clean.
3. No trash, solid waste or waste dry product is stored within the milk plant, except in covered containers. Waste containers at the packaging machine or bottle washer may be uncovered during the operation of such equipment.
4. All rooms in which milk and milk products are handled, processed or stored; or in which containers, utensils, and/or equipment are washed or stored, are kept clean, neat and free of evidence of insects and rodents.
5. Excessive product dust shall be kept under effective control by the use of exhaust and collective systems designed for in-plant dust control. Tailings and materials collected from exhaust collective systems shall not be used for human consumption.

 

ITEM 10p. SANITARY PIPING

All sanitary piping, fittings and connections which are exposed to milk and milk products or from which liquids may drip, drain or be drawn into milk and milk products shall consist of smooth, impervious, corrosion-resistant, non-toxic, easily cleanable material, which is approved for milk product-contact surfaces. All piping shall be in good repair. Pasteurized milk and milk products shall be conducted from one piece of equipment to another only through sanitary piping.⁹

PUBLIC HEALTH REASON

Milk piping and fittings are sometimes so designed as to be difficult to clean, or they may be constructed of metal, which corrodes easily. In either case, it is unlikely that they will be kept clean. Sanitary milk piping is a term, which applies to properly designed and properly constructed piping. The purpose of the third sentence is to prevent exposure of the pasteurized milk or milk product to contamination.

ADMINISTRATIVE PROCEDURES

This Item is deemed to be satisfied when:

1. All sanitary piping, fittings and connections, which are exposed to milk or milk products or from which liquids may drip, drain or be drawn into milk or milk products, consist of smooth, impervious, corrosion-resistant, non-toxic, easily cleanable material.
2. All sanitary piping, connections and fittings consist of:
   1. Stainless steel of the AISI 300 series; or
   2. Equally corrosion-resistant metal which is non-toxic and nonabsorbent; or
   3. Heat resistant glass; or
   4. Plastic, or rubber and rubber-like materials which are relatively inert, resistant to scratching, scoring, decomposition, crazing, chipping and distortion under normal use conditions; are non-toxic, fat resistant, relatively nonabsorbent; which do not impart flavor or odor to the milk or milk product; and which maintain their original properties under repeated use conditions, may be used for gaskets, sealing applications and for short flexible takedown jumpers or connections where flexibility is required for essential or functional reasons.
3. Sanitary piping, fittings and connections are designed to permit easy cleaning; kept in good repair; free of breaks or corrosion; and contain no dead ends of piping in which milk or milk product may collect.
4. All interior surfaces of demountable piping, including valves, fittings and connections are designed, constructed and installed to permit inspection and drainage.
5. All mechanically cleaned milk pipelines and return-solution lines are rigid, self-draining and so supported to maintain uniform slope and alignment. Return solution lines shall be constructed of material meeting the specifications of Item 2 above. If gaskets are used, they shall be self-positioning, of material meeting the specifications outlined in Item 2 above and designed, finished and applied to form a smooth, flush interior surface. If gaskets are not used, all fittings shall have self-positioning faces designed to form a smooth, flush interior surface. All interior surfaces of welded joints in pipelines shall be smooth and free from pits, cracks or inclusions.

   In the case of welded lines, all welds shall be inspected as they are made and such welds shall be approved by the Regulatory Agency.

   Each cleaning circuit shall have access points for inspection in addition to the entrances and exits. These may be valves, removable sections, fittings or other means or combinations that are adequate for the inspection of the interior of the line. These access points shall be located at sufficient intervals to determine the general condition of the interior surfaces of the pipeline.

   Detailed plans for welded pipeline systems shall be submitted to the Regulatory Agency for written approval prior to installation. No alteration or addition shall be made to any welded milk pipeline system without prior written approval from the Regulatory Agency.

6. Pasteurized milk and milk products are conducted from one piece of equipment to another only through sanitary milk piping.
7. For milk plants that dry milk or milk products, because of the high pressure required to obtain proper dispersal of the product in the drying chamber, the pipeline between the high pressure pump and the dryer nozzle may be connected with pressure-tight threaded fittings, or may be welded.

 

ITEM 11p. CONSTRUCTION AND REPAIR OF CONTAINERS AND EQUIPMENT

All multi-use containers and equipment that milk and milk products come into contact with shall be of smooth, impervious, corrosion-resistant, non-toxic material; shall be constructed for ease of cleaning; and shall be kept in good repair. All single-service containers, closures, gaskets and other articles that milk and milk products come in contact with shall be non-toxic and shall have been manufactured, packaged, transported and handled in a sanitary manner. Articles intended for single-service use shall not be reused.

PUBLIC HEALTH REASON

When equipment is not constructed and located so that it can be cleaned easily, and is not kept in good repair, it is unlikely that it will be properly cleaned.

Single-service articles, which have not been manufactured and handled in a sanitary manner, may contaminate the milk or milk product.

ADMINISTRATIVE PROCEDURES

This Item is deemed to be satisfied when:

1. All multi-use containers and equipment that milk and milk products come into contact with are of smooth, impervious, corrosion-resistant and non-toxic material.
2. All milk and milk product-contact surfaces of multi-use containers and equipment consist of:
   1. Stainless steel of the AISI 300 series; or
   2. Equally corrosion-resistant metal which is non-toxic and nonabsorbent; or
   3. Heat resistant glass; or
   4. Plastic or rubber and rubber-like materials which are relatively inert, resistant to scratching, scoring, decomposition, crazing, chipping and distortion under normal use conditions; which are non-toxic, fat resistant, relatively nonabsorbent and do not impart flavor or odor to the milk or milk product; and which maintain their original properties under repeated use conditions.
3. All joints in containers, utensils and equipment are flush and finished as smooth as adjoining surfaces, or if the surface is vitreous, it must be continuous. Tile floors are not acceptable in dryers. Joints on equipment coming in contact with dry milk or milk products only or used for hot air piping may be sealed by other acceptable means. Where a rotating shaft is inserted through a surface with which milk or milk products come into contact, the joint between the moving and stationary surfaces shall be close-fitting. Grease and oil from gears, bearings, and cables shall be kept out of the milk and milk products. Where a thermometer or temperature-sensing element is inserted through a surface, with which milk or milk products come into contact, a pressure-tight seal shall be provided ahead of all threads and crevices.
4. All openings in covers of tanks, vats, separators, etc. are protected by raised edges, or otherwise, to prevent the entrance of surface drainage. Condensation-diverting aprons shall be provided as close to the tank or vat as possible on all pipes, thermometers, or temperature sensing elements and other equipment extending into a tank, bowl, vat or similar equipment, unless a watertight joint is provided.
5. All surfaces with which milk or milk products come into contact, except pneumatic ducts and cyclonic or air separator collectors, are easily accessible or demountable for manual cleaning or are designed for mechanical cleaning. Provided, that flexible plastic or rubber tanker loading and unloading hoses with screw-type hose clamps shall be considered in compliance, if an appropriate screwdriver or tool is readily available for disassembly. All product-contact surfaces shall be readily accessible for inspection and shall be self-draining.
6. There are no threads used in contact with milk or milk products except where needed for functional and safety reasons, such as in clarifiers, pumps and separators. Such threads shall be of a sanitary type, except those used on high-pressure lines between the high pressure pump and the dryer nozzle.
7. All multi-use containers and other equipment have rounded corners; are in good repair; and free from breaks, crevices and corrosion. Milk cans shall have umbrella-type covers.
8. Strainers, if used, are of perforated metal design and so constructed as to utilize single-service strainer media. Multiple-use, woven material shall not be used for straining milk. Provided, that when required for functional reasons inherent to the production of certain milk products, such as buttermilk, whey, dry whey, and dry milk products, woven material may be used where it is impractical to use perforated metal. However, woven material parts shall be mechanically cleaned by such methods that thoroughly clean the woven material and do not contaminate the product.
9. Sifters for dry milk products are so constructed as to utilize single-service or multi-service use strainer media conforming with:
   1. Plastic materials listed in 2.d. above; or
   2. Woven stainless steel wire conforming to 2.a. above; or
   3. Cotton, linen, silk, or synthetic fibers which are non-toxic, relatively insoluble, easily cleanable and do not impart a flavor to the product.
   Tailings shall be continuously discharged from sifters through dust-tight connections to an enclosed container and shall not be used for human consumption.
10. All single-service containers, closures, gaskets and other articles that milk or milk products come in contact with are non-toxic.
11. The manufacture, packing, transportation and handling of single-service containers, closures, caps, gaskets and similar articles comply with the requirements of Appendix J. Standards for the Fabrication of Single-Service Containers and Closures for Milk and Milk Products. Provided, that all paper, plastics, foil, adhesives, and other components of containers used in the packaging of milk or milk products that have been condensed and/or dried shall be free from deleterious substances and comply with the requirements of the FFD&C Act.

    Inspections and tests shall be made by the Regulatory Agency or any Agency authorized by them.

NOTE: 3-A Sanitary Standards for dairy equipment are promulgated jointly by the Sanitary Standards Subcommittee of the Dairy Industry Committee, the Committee on Sanitary Procedure of the International Association for Food Protection and the Milk Safety Branch, Center for Food Safety and Applied Nutrition, Food and Drug Administration, Public Health Service, Department of Health and Human Services. Equipment manufactured in conformity with 3-A Sanitary Standards complies with the sanitary design and construction standards of this Ordinance.

 

ITEM 12p. CLEANING AND SANITIZING OF CONTAINERS AND EQUIPMENT

The product-contact surfaces of all multi-use containers, utensils and equipment used in the transportation, processing, condensing, drying, packaging, handling, and storage of milk or milk products shall be effectively cleaned and shall be sanitized before each use. Provided, that cloth-collector systems used on dryers shall be cleaned and sanitized or purged at intervals and by methods recommended by the manufacturer and approved by the Regulatory Agency. Provided further, that piping, equipment and containers used to process, conduct or package aseptically processed milk and milk products, beyond the final heat treatment process, shall be sterilized before any aseptically processed milk or milk product is packaged and shall be re-sterilized whenever any nonsterile product has contaminated it.

PUBLIC HEALTH REASON

Milk and milk products cannot be kept clean and safe, if permitted to come into contact with containers, utensils and equipment that have not been properly cleaned and sanitized.

ADMINISTRATIVE PROCEDURES

This Item is deemed to be satisfied when:

1. All multi-use containers and utensils are thoroughly cleaned after each use and all equipment is thoroughly cleaned at least once each day used, unless the Regulatory Agency has reviewed and accepted information, in consultation with FDA, supporting the cleaning of multi-use containers and utensils at frequencies extending beyond one (1) day or seventy-two (72) hours in the case of storage tanks, or 44 hours in the case of evaporators, which are continuously operated. Supporting information shall be submitted to and approved by the Regulatory Agency prior to initiating the qualification period if required. Finished product produced during an extended run must meet all applicable requirements of Section 7 of this Ordinance. Any significant equipment or processing changes shall be communicated to the Regulatory Agency.

   The supporting information may include but is not limited to:

   1. Statement of proposal, including desired cleaning frequency.
   2. Product and equipment description.
   3. Intended use and consumers.
   4. Distribution and storage temperatures of product.
   5. Diagram of process of interest.
   6. Process parameters, including temperature and times.
   7. Hazard evaluation and safety assessment.
   8. Review of equipment for sanitary design.
   9. When indicated by a hazard evaluation and safety assessment, a plan for initial qualification shall be developed to address identified critical process parameters.

   Otherwise, storage tanks shall be cleaned when emptied and shall be emptied at least every seventy-two (72) hours. Records must be available to verify that milk storage in these tanks does not exceed seventy-two (72) hours. These records shall be available for at least the previous three (3) months or from the time of the last regulatory inspection, whichever is longer. In the case of pasteurized storage tanks, which are mechanically cleaned at intervals of less than seventy-two (72) hours, the mechanical cleaning records required under Item 2.b. of this Section shall be considered adequate. Storage tanks, which are used to store raw milk or milk products or heat-treated milk products longer than twenty-four (24) hours and silo tanks used for the storage of raw milk or milk products or heat-treated milk products shall be equipped with a seven (7) day temperature recording device complying with the specifications of Appendix H. Otherwise provided, evaporators shall be cleaned at the end of a continuous operation, not to exceed forty-four (44) hours, and records must be available to verify that the operation time does not exceed forty-four (44) hours.

   Drying equipment, cloth-collector systems, packaging equipment and multi-use dry milk products and dry whey storage containers are cleaned at intervals and by methods recommended by the manufacturer and approved by the Regulatory Agency. Such methods may include cleaning without water by use of vacuum cleaners, brushes, or scrapers. After cleaning, such equipment is sanitized by a method approved by the Regulatory Agency. Cloth collector systems and all dry product-contact surfaces downstream from the dryer shall be sanitized or purged at intervals and by methods recommended by the manufacturer and approved by the Regulatory Agency. Storage bins used to transport dry milk or milk products shall be dry cleaned after each usage and washed and sanitized at regular intervals.

   NOTE: Appendix F. contains additional information on dry cleaning of drying equipment, packaging equipment, and dry milk product and dry whey storage containers.

   All milk tank trucks that transport Grade "A" milk and milk products, shall be washed and sanitized at a permitted milk plant, receiving station, transfer station, or milk tank truck cleaning facility. Whenever a milk tank truck has been cleaned and sanitized, as required by the Regulatory Agency, it shall bear a tag or a record shall be made showing the date, time, place and signature or initials of the employee or contract operator doing the work, unless the milk tank truck delivers to only one receiving facility where responsibility for cleaning and sanitizing can be definitely established without tagging. The tag shall be removed at the location where the milk tank truck is next washed and sanitized and kept on file for fifteen (15) days as directed by the Regulatory Agency.

2. Pipelines and/or equipment designed for mechanical cleaning meet the following requirements:
   1. An effective cleaning and sanitizing regimen for each separate cleaning circuit shall be followed.
   2. A temperature recording device, complying with the specifications in Appendix H., or a recording device which provides sufficient information to adequately evaluate the cleaning and sanitizing regimen and which is approved by the Regulatory Agency, shall be installed in the return solution line or other appropriate area to record the temperature and time which the line or equipment is exposed to cleaning and sanitizing solutions. For purposes of this Section, recording devices which produce records not meeting the specifications of Appendix H. may be acceptable if:
      1. (1) The device provides a continuous record of the monitoring of the cleaning cycle time and temperature, cleaning solution velocity or cleaning pump operation and the presence or strength of cleaning chemicals for each cleaning cycle.
      2. (2) The record shows a typical pattern of each circuit cleaned, so that changes in the cleaning regimen may be readily detected.
      3. (3) Electronic storage of required cleaning records, with or without hard copy printouts, may be acceptable, provided, the electronically generated records are readily available. Electronic records must meet the criteria of this Section and those provisions of Appendix H., which are determined to be applicable by the Regulatory Agency and FDA. Except that, electronic storage of required cleaning records, with or without hard copy, shall be acceptable, provided the computer and computer generated records are readily available and meet the criteria of this Section and the 21 CFR Part 11.
   3. Cleaning charts and electronically stored records required by this Section shall be identified, dated and retained for three (3) months or until the next regulatory inspection, whichever is longer.
   4. During each official inspection, the Regulatory Agency shall examine charts and records to verify the cleaning regimens.
3. Milk plants in which containers are washed manually are equipped with a two (2)-compartment wash-and-rinse vat for this purpose. Such milk plants shall also provide a steam cabinet or individual steam-jet plate with hood for sanitizing of cleaned containers, or if sanitizing is done with chemicals, a third treatment vat.
4. In milk plants utilizing automatic bottle washers, such washers must provide for bactericidal treatment by means of steam, hot water or chemical treatment. In soaker-type bottle washers, in which bactericidal treatment depends upon the causticity of the washing solution, the caustic strength for a given soaking time and temperature shall be as specified in the following table, which lists the combinations of causticity, time and temperature, of equal bactericidal value, for the soaker tank of soaker-type bottle washers:
   
   

   Table 2. Combinations of Causticity, Time and Temperature, of Equal Bactericidal Value, for the Soaker Tank of Soaker-Type Bottle Washers
   (Based on NSDA Specifications for beverage bottles)

   Time in Minutes	Temperature, Degrees C (F)
   	77 (170)	71 (160)	66 (150)	60 (140)	54 (130)	49 (120)	43 (110)
   	Concentration of NaOH (percent)
   3 min.	0.57	0.86	1.28	1.91	2.86	4.27	6.39
   5 min.	0.43	0.64	0.96	1.43	2.16	3.22	4.80
   7 min.	0.36	0.53	0.80	1.19	1.78	2.66	3.98
   NOTE: The National Soft Drink Association (NSDA), Washington, D.C. 20036 alkali test, the NSDA caustic test, or other suitable test may be used to determine the strength of the soaker solution. The caustic strength shall be tested monthly by the Regulatory Agency.

   
   
   When caustic is so used, subsequent final rinsing of the bottles shall be with water, which has been treated with heat or chemicals to assure freedom from viable pathogenic or otherwise harmful organisms, to prevent recontamination of the treated bottle during the rinsing operation.
5. All multi-use containers, utensils and equipment are sanitized before use, employing one or a combination of the methods prescribed under Item 11r. Additionally, for milk plants that condense or dry milk or milk products the following methods are acceptable, or any other method, which has been demonstrated to be equally efficient:
   1. Exposure to an enclosed jet of steam for not less than 1 minute.
   2. Exposure to hot air at a temperature of at least 83°C (180°F) for at least twenty (20) minutes as measured by an acceptable indicating thermometer located in the coldest zone.
   Assembled equipment must be sanitized prior to each day's run, unless FDA and the Regulatory Agency have reviewed and accepted information supporting the sanitizing of multi-use containers, utensils and equipment at frequencies extending beyond one (1) day. Tests to determine the efficiency of sanitization should be made by the Regulatory Agency at intervals sufficient to satisfy the Regulatory Agency that the sanitization process is effective. Provided, that all piping, equipment and containers used to conduct, process or package aseptically processed milk and milk products, beyond the final heat treatment process, shall be sterilized by heat, chemical sterilant(s) or other appropriate treatment before use and resterilized whenever it has been contaminated by nonsterile product.

   For milk plants that dry milk or milk products, higher temperatures and longer periods may be necessary for the sanitization of high-pressure lines. It has been demonstrated that alkaline cleaners at 72°C (160°F) for thirty (30) minutes, followed by an acid cleaner for thirty (30) minutes at the same temperature, produce satisfactory results. Studies have indicated that effective sanitization of the dryer may be accomplished by the following procedure:

   1. Operate the spray nozzles with water at a temperature and rates at least as high as those employed during the drying operation.
   2. Adjust airflow to give at least 0.5 inch (water) pressure in the drying chamber.
   3. Continue the operation for twenty (20) minutes while a temperature of not less than 85°C (185°F) is being registered at the discharge from the dryer.
   Portions of the drying system not reached by this treatment or dryers in which this procedure is not practical shall be treated by one of the methods prescribed above, or by other methods of demonstrated effectiveness.
6. 
   
   1. The residual bacteria count of multi-use containers and closures shall be conducted as outlined in Appendix J. The residual bacteria count of multi-use containers, used for packaging pasteurized milk and milk products, shall not exceed one (1) colony per milliliter (1/mL) of capacity, when the rinse test is used, or fifty (50) colonies per fifty (50) square centimeters (one (1) colony per square centimeter) of product-contact surface, when the swab test is used, in three (3) out of four (4) samples taken at random on a given day. Coliform organisms shall be undetectable in all multi-use containers.
   2. The residual bacteria count of single-service containers and closures, used for packaging pasteurized milk and milk products, shall not exceed fifty (50) colonies per container, or in the case of dry product packaging, shall not exceed one (1) colony per milliliter (1/mL) of capacity when the rinse test is used, except that in containers less than 100 mL the count shall not exceed ten (10) colonies or fifty (50) colonies per eight (8) square inches (one (1) colony per square centimeter) of product-contact surface, when the swab test is used, in three (3) out of four (4) samples taken at random on a given day. Coliform organisms shall be undetectable in all single-service containers.
   3. When single-service containers or closures are fabricated in another plant that conforms to the Standards of Appendix J. and the Regulatory Agency has information that they do comply, the Regulatory Agency may accept the containers as being in conformance without additional testing. If there is reason to believe that containers do not conform to the bacteriological standards, additional testing may be required. If containers are fabricated in the milk plant, the Regulatory Agency shall collect, during any consecutive six (6) months, at least four (4) sample sets of containers, as defined in Appendix J., from each manufacturing line, as defined in Appendix J., in at least four (4) separate months, except when three (3) months show a month containing two (2) sampling dates separated by at least twenty (20) days, and analyze the sample sets at an Official, Commercial or Industry Laboratory, approved by the State Milk Laboratory Certifying Agency specifically for the examinations required under Appendix J.

7. Milk plants that utilize multi-use plastic containers, for pasteurized milk and milk products, shall comply with the following criteria:
   1. All containers shall be identified as to plant of manufacture, date of manufacture and type and class of plastic material used. This information may be by code. Provided, that the code is revealed to the Regulatory Agency.
   2. A device shall be installed in the filling line capable of detecting, in each container before it is filled, volatile organic contaminants in amounts that are of public health significance. Such device must be constructed so that it may be sealed by the Regulatory Agency to prevent the changing of its sensitivity functioning level. Models using an air injection system and with a testing device built into the detection equipment do not have to be sealed. To assure proper functioning of the system the operator needs to be able to adjust the sensitivity. However, those models utilizing an external testing device must be sealed. Any container detected by the device, as being unsatisfactory must be automatically made unusable to prevent refilling. In addition, the device must be interconnected so that the system will not operate unless the detecting device is in proper operating condition. Provided, that any other system so designed and operated that will provide equal assurance of freedom from contamination and recognized by FDA to be equally efficient may be accepted by the Regulatory Agency.

      When other systems are used in place of a device for the detection of volatile organic contaminants, the following criteria has been developed to determine what constitutes equal assurance:

      1. (1) A soaker-type washer shall be used for cleaning and sanitizing the containers and shall conform with the following criteria:
         1. i) If caustic is used, the caustic strength for a given washing time and temperature shall be as specified in Table 2 of this Item; or
         2. ii) If a cleaning compound, other than caustic is used, the compound shall be a mild or moderately alkaline, granular composition formulated from a blend of sodium phosphate and anionic synthetic detergents and conform to the following:
            1. A) The used solution shall have at least a three percent (3%) concentration with a pH of at least 11.9 and an alkalinity expressed as sodium oxide of at least 2.5 percent;
            2. B) There shall be at least a two (2) minute soak time in the soaker tank;
            3. C) The temperature of the soaker tank shall be at least 69°C (155°F); and
            4. D) The final rinse subsequent to the soaking tank shall be with a sanitizing solution.
         3. iii) The soaker-type washer system shall be so designed and operated that unless the time, temperature and concentration, as specified for the soaker solutions, are met, the containers cannot be discharged from the washer. The mechanism for control of the time, temperature and concentration of the use solution shall be sealed.
      2. (2) A thorough inspection procedure shall be in effect to remove any containers, which show stress cracks, splitting, pitting, discoloration, or cloudiness, as well as any unremoved soil. This must be carried out with adequate light and be much more thorough than the customary cursory inspection given to glass bottles.
   3. A standard must be available for use by the Regulatory Agency for testing the proper sensitivity functioning levels of the detection device.
   4. The containers shall comply with the applicable construction requirements of Item 11p of this Ordinance. The closure for the container shall be single-service. Screw-type closures shall not be used.
   5. The container shall not impart, into the product, pesticide residual levels or other chemical contaminants in excess of those considered acceptable under the FFD&CA and regulations issued there under.
   6. The phrase "Use only for food" shall appear on all containers.

 

ITEM 13p. STORAGE OF CLEANED CONTAINERS AND EQUIPMENT

After cleaning, all multi-use milk or milk product containers, utensils and equipment shall be transported and stored to assure complete drainage and shall be protected from contamination before use.

PUBLIC HEALTH REASON

If containers and equipment are not protected from contamination, the value of sanitization may be partly or entirely nullified.

ADMINISTRATIVE PROCEDURES

This Item is deemed to be satisfied when:

All multi-use containers, utensils and equipment, after cleaning, are transported and/or stored on racks made of impervious food grade materials, or in clean cases elevated above the floor. Containers shall be stored inverted, if practicable, on racks or in cases constructed of relatively nonabsorbent, impervious, food-grade, corrosion-resistant, non-toxic materials, or otherwise protected from contamination.

 

ITEM 14p. STORAGE OF SINGLE-SERVICE CONTAINERS, UTENSILS AND MATERIALS

Single-service caps, cap stock, parchment paper, containers, gaskets, liners, bags and other single-service articles for use in contact with milk and milk products shall be purchased and stored in sanitary tubes, wrappings or cartons; shall be kept therein in a clean, dry place until used; and shall be handled in a sanitary manner.

PUBLIC HEALTH REASON

Soiled or contaminated caps, parchment paper, gaskets and single-service containers nullify the benefits of the safeguards prescribed throughout this Ordinance. Packing the caps in tubes, which remain unbroken until they are placed in the bottling machine, is the best method of assuring cap cleanliness.

ADMINISTRATIVE PROCEDURES

This Item is deemed to be satisfied when:

1. Single-service caps, cap stock, parchment paper, containers, gaskets, liners, bags and other single-service articles for use in contact with milk and milk products are purchased and stored in sanitary tubes, wrappings or cartons; are kept in a clean, dry place until used; and are handled in a sanitary manner.
2. Paperboard shipping containers used to enclose plastic bags or unfilled containers are used only once, unless other methods are employed to protect the containers from contamination.
3. Tubes or cartons are not refilled with spilled caps, gaskets or parchment papers.
4. Cartons or boxes from which contents have been partially removed are kept closed.
5. Suitable cabinets are provided for storage of tubes after removal from the large outer box, and for storage of opened cartons, unless other satisfactory means are employed to protect the caps, closures or containers.

 

ITEM 15p. PROTECTION FROM CONTAMINATION

Milk plant operations, equipment and facilities shall be located and conducted to prevent any contamination of milk or milk products, ingredients, containers, utensils and equipment. All milk or milk products or ingredients that have been spilled, overflowed or leaked shall be discarded. The processing or handling of products other than Grade "A" milk or milk products in the milk plant shall be performed to preclude the contamination of such Grade "A" milk and milk products. The storage, handling and use of poisonous or toxic materials shall be performed to preclude the contamination of milk and milk products, or ingredients of such milk and milk products, or the product-contact surfaces of all containers, utensils and equipment.

PUBLIC HEALTH REASON

Because of the nature of milk and milk products and their susceptibility to contamination by bacteria, chemicals and other adulterants, every effort should be made to provide adequate protection for the milk and milk products at all times. Misuse of pesticides and other harmful chemicals can provide opportunities for contamination of the milk and milk product or equipment with which the milk or milk product comes in contact.

ADMINISTRATIVE PROCEDURES

This Item is deemed to be satisfied when:

15p. (A)

1. Equipment and operations are so located within the milk plant as to prevent overcrowding and contamination of cleaned and sanitized containers, utensils and equipment by splash, condensation or manual contact.
2. Packaged milk and milk products, which have physically left the premises or the processing milk plant are not re-pasteurized for Grade "A" use. The Regulatory Agency may, on a specific individual request, authorize reprocessing of packaged milk and milk products, provided all other aspects of this Item, including proper storage temperature and container integrity are complied with. Provided, that the re-pasteurization of milk and milk products shipped in milk tank trucks, which have been pasteurized at another Grade "A" milk plant and have been handled in a sanitary manner and maintained at 7°C (45°F) or less is permitted. Equipment, designated areas or rooms utilized for handling, processing and storage of returned packaged milk or milk products are maintained, operated, cleaned and sanitized so as to preclude the contamination of Grade "A" products and equipment and the Grade "A" operations.
3. All product-contact surfaces of containers, utensils and equipment are covered or otherwise protected to prevent the access of insects, dust, condensation and other contamination. All openings, including valves and piping attached to milk and milk product storage tanks and milk tank trucks, pumps, vats, etc., shall be capped or otherwise properly protected. While unloading at a milk plant, receiving station or transfer station, one of the following conditions shall be met:
   1. If the area is completely enclosed, walls and ceiling, with doors closed during the unloading process and the dust-cover or dome and the manhole cover is opened slightly and held in this position by the metal clamps used to close the cover, then a filter is not required. However, if the dust cover and/or manhole cover(s) are opened in excess of that provided by the metal clamps or the covers have been removed, then a suitable filter is required for the manhole.
   2. If the area is not completely enclosed or doors of the unloading area are open during unloading, a suitable filter is required for the manhole or air inlet vent and suitable protection must be provided over the filter material either by design of the filter holding apparatus or a roof or ceiling over the area. When weather and environmental conditions permit, manhole openings and covers of milk tank trucks may be opened outdoors for the short period of time necessary for the collection of samples for animal drug residue screening. Direct connections from milk tank truck to milk tank truck must be made from valve-to-valve or through the manhole lid. Provided, that all connections are made ferrule-to-ferrule and adequate protection is provided for the air vent.

   Receiving and dump vats shall be completely covered, except during washing and sanitizing, and when milk is being dumped. Where strainers are used, the cover for the vat opening shall be designed to cover the opening with the strainer in place.

4. Ingredients added to milk and milk products are handled in such a manner as to avoid contamination.
5. Whenever air under pressure is used for the agitation or movement of milk or milk products, or is directed at a milk or milk product-contact surface, it is free of oil, dust, rust, excessive moisture, extraneous materials and odor, and shall otherwise comply with the applicable standards of Appendix H. Air intakes for drying equipment shall be located so as to minimize the amount of atmospheric contamination and shall be equipped with suitable single-service filters, multi-use filters, or continuous air filter systems. (Refer to Appendix H.) The use of steam containing toxic substances is expressly prohibited. Whenever steam is used in contact with milk or milk products it shall be of culinary quality and shall comply with the applicable standards of Appendix H.
6. Air exhausts from dryer systems are covered when dryers are not in operation.
7. Standardization of Grade "A" milk and milk products with other than Grade "A" milk and milk products is prohibited. This Ordinance permits standardization as a process of adjusting the milk fat of milk in a milk plant by the addition or removal of cream or non-fat (skim) milk.
8. All multi-use cases used to encase packaged milk and milk product containers are cleaned prior to their use.
9. All ingredients and non-product-contact materials used in the preparation or packaging of milk and milk products are stored in a clean place and are so handled as to prevent their contamination.
10. Pasteurized milk and milk products are not strained or filtered, except through a perforated metal strainer.
11. Only those poisonous or toxic materials, including but not limited to insecticide, rodenticides, detergents, sanitizers, caustics, acids, related cleaning compounds and medicinal agents necessary for the maintenance of the milk plant are present in the milk plant.
12. Those poisonous or toxic materials that are necessary are not stored in any room where milk or milk products are received, processed, pasteurized, condensed, dried or stored; or where containers, utensils or equipment are washed; or where single-service containers, closures, bags, or caps are stored.
13. Those poisonous or toxic materials that are necessary are stored in a separate area of the milk plant in prominently and distinctly labeled containers. Provided that, this does not preclude the convenient availability of detergents or sanitizers to areas where containers, utensils and equipment are washed and sanitized.
14. Only insecticides and rodenticides approved by the Regulatory Agency and/or registered with the EPA shall be used for insect and rodent control. Such insecticides and rodenticides shall be used only in accordance with the manufacturer's label directions and shall be prevented from contaminating milk and milk products, containers, utensils and equipment.
15. In the case of separating non-Grade "A" and Grade "A" milk or milk products, a water rinse after processing non-Grade "A" and prior to Grade "A" is adequate separation, provided both are processed as Grade "A", and raw and pasteurized milk or milk products are kept physically separated.
16. Grade "A" raw milk or milk products and non-Grade "A" raw products, dairy or non-dairy, shall be separated by one (1) valve.
17. Grade "A" pasteurized milk or milk products and non-Grade "A" pasteurized products, dairy or non-dairy, shall be separated by one (1) valve.
18. Provided, that during the actual flushing of raw milk or milk product lines and vessels with water, there shall be a sufficient separation between water piping and unpasteurized milk or milk products, or lines used to conduct unpasteurized milk or milk products, to prevent the accidental addition of water.
19. When two (2) grades of milk or milk products are received in the same milk plant in dual receiving equipment, a swing type dump grill is not permitted. When two (2) grades of milk or milk products are received in the milk plant by milk tank trucks, separate receiving equipment and unloading pumps shall be provided.

15p.(B)

1. During processing, pipelines and equipment used to contain or conduct milk and milk products shall be effectively separated from tanks or circuits containing cleaning and/or sanitizing solutions. This can be accomplished by:
   1. Physically disconnecting all connection points between tanks or circuits containing cleaning and/or sanitizing solutions from pipelines and equipment used to contain or conduct milk or milk products; or
   2. Separation of all connection points between such circuits by at least two (2) automatically controlled valves with a drainable opening to the atmosphere between the valves; or by a single-bodied double seat valve, with a drainable opening to the atmosphere between the seats, if:
      1. (1) The opening to the atmosphere (vent) is equal to the largest pipeline feeding the valve(s).
      2. (2) Both valves, and valve seats in the case of single-bodied double seat valves, are position detectable and capable of providing an electronic signal when not properly seated in the blocked position.
      3. (3) These valves, or valve seats in the case of single-bodied double seat valves, are part of an automatic fail-safe system that will prevent contamination of product with cleaning or sanitizing solutions. Automatic fail-safe systems will be unique to each particular installation but are normally based on the premise that both blocking valve seats are properly seated in the blocked position before the mechanical cleaning system can be activated for the cleaning circuit containing this valve arrangement.
      4. (4) The system does not have any manual overrides.
      5. (5) Controls for the fail-safe system are secured as directed by the Regulatory Agency in order to prevent unauthorized changes.
      6. (6) The vent is not cleaned until milk and milk products have been removed or isolated.
      7. (7) Variations from the above specifications may be individually evaluated and found to also be acceptable if the level of protection is not compromised.

         For Example: In low pressure, gravity drain applications where the product line is the same size or larger than the cleaning or sanitizing solution line, the vent may be the size of the solution line and the valves or valve seats need not be position detectable. If a common drain line is used to connect vent lines from more than one (1) block-and-bleed vent, such as in the case of drain lines from a series of cheese vats with a common drain for the block-and-bleed vent lines, the cross sectional area of the common drain line must be at least equal to the total cross sectional area of the lines connected to the header. Or, a common drain line of the same size as the vent may be used, if provisions are included in a fail-safe control system to sequence the use and cleaning of the vats to assure that no more than one (1) vat attached to that drain can be washed at the same time. All other criteria still apply. In order to accept this variation, the valve(s) must fail to the blocked position upon loss of air or power, and there must be no pumps capable of pushing milk or milk product, cleaning solutions, or sanitizing solutions into this valve arrangement.

   3. In the case of aseptically processed and higher-heat-shorter-time (HHST) pasteurized milk and milk products that are processed and the equipment cleaned and/or chemically sanitized above the atmospheric boiling point of the milk or milk product or cleaning and/or sanitizing solutions, the required separation between pipe lines and equipment, used to contain or conduct milk and milk products, and tanks or circuits containing cleaning and/or chemical sanitizing solutions, may be accomplished using an alarmed steam block(s), located between the milk and milk product and cleaning and/or chemical sanitizing solutions if:
      1. (1) The steam block is equipped with a visible steam trace that exits at the bottom of the steam block;
      2. (2) The steam trace is equipped with a temperature sensor that is capable of differentiating between those temperatures that indicate steam exiting the steam trace has not been exposed to liquid in the steam block and temperatures that will occur when liquid is present in the steam block;
      3. (3) This steam trace shall be physically isolated from other steam lines or traces such that the temperature sensor measures the steam temperature only from that single trace;
      4. (4) The temperature sensor is integrated with automatic controls, such that when there is milk or milk products on one (1) side of the steam block and cleaning and/or chemical sanitizing solutions on the other side of the steam block, and the temperature sensor in the steam trace detects a temperature that indicates that liquid, rather than steam, is present in the steam trace, the cleaning pump will be de-energized, and when needed to prevent solution pressure on the steam block, the cleaning and/or chemical sanitizing solution are automatically drained away from the steam block. Except that:
         1. i) In systems where the cleaning and/or sanitizing solution is circulated by the timing pump, that pump may continue to operate during an alarmed condition, provided a legal flow-diversion device (FDD) is used to divert the cleaning and/or chemical sanitizing solution flow away from the steam block.
         2. ii) In aseptic processing systems that are not equipped with a legal FDD and where the cleaning and/or sanitizing solution is circulated by the timing pump of the aseptic processing system, that pump may continue to operate during an alarmed condition, provided there are at least two (2) instrumented steam blocks between the milk and milk product and the cleaning and/or chemical sanitizing solutions and at least one (1) of the blocks remains uncompromised.
      5. (5) During times when a steam block(s) is used as described in this Section to provide separation between pipe lines and equipment, used to contain or conduct milk and milk products, and tanks or circuits containing cleaning and/or chemical sanitizing solutions, there shall be no time delays or other means that delay an immediate automatic response to liquid exiting the steam trace; and
      6. (6) Although the automatic control system is not required to comply with Appendix H. V., Criteria for the Evaluation of Computerized Systems for Grade "A" Public Health Controls, there shall be means provided to test and verify the accuracy of the sensor and the operation of the control system.

         In order to facilitate testing, the temperature set point that will activate the automatic controls, described in this Section, will be identified for each steam block used for this purpose. Means shall be provided to verify that lowering the temperature below this set point will activate the control system when a steam block(s) is used, as described in this Section, to provide separation between pipe lines and equipment, used to contain or conduct milk and milk products, and tanks or circuits containing cleaning and/or chemical sanitizing solutions.

   NOTE: The valve arrangement(s) described in this Section shall not be used to separate raw products, dairy, non-dairy or water, from pasteurized milk or milk products. Provided that, nothing in this Section shall be construed as barring any other means to separate milk and milk product from cleaning/sanitizing solution in HHST and Aseptic Processing Systems, which have been recognized by FDA and in the case of aseptic processing equipment, by the Processing Authority, to be equally effective and which are approved by the Regulatory Agency.
2. Except as permitted in Item 16p, there shall be no physical connection between unpasteurized products, dairy, non-dairy, or water, and pasteurized milk or milk products. Pasteurized non-dairy products or water not completely separated from pasteurized milk and milk products, shall be pasteurized at times and temperatures which meet at least the minimum times and temperatures provided for in Definition EE or in the case of water have undergone an equivalent process found acceptable by FDA and the Regulatory Agency or has undergone a hazard evaluation and safety assessment of the specific water supply and application involved and has been treated, as necessary, following a protocol acceptable to the Regulatory Agency, in consultation with FDA, to ensure the water will not compromise the safety of the milk or milk product.

   This Section does not require separate raw and pasteurized mechanical cleaning systems.

3. Pasteurized re-circulation lines, divert lines, and leak-detect lines connecting to the constant-level tank shall be designed so that there is an air gap between the termination of these pipelines and the raw milk or milk product overflow level. This air gap must be equivalent to at least two (2) times the diameter of the largest of these pipelines. For purposes of this Section, an overflow is defined as the flood rim of the constant-level tank or any unrestricted opening below the flood rim of the constant-level tank which is large enough that it is at least equivalent to two (2) times the diameter of the largest of these pipelines.
4. All milk and milk products that have overflowed, leaked, been spilled or improperly handled are discarded. Milk and milk products drained from processing equipment at the end of a run, collected from a defoamer system, and milk or milk product solids rinsed from equipment, containers or pipelines shall be repasteurized only if such milk or milk products are handled in a sanitary manner and maintained at 7°C (45°F) or less. When the handling and/or cooling of such milk and milk products are not in compliance with this requirement, they shall be discarded. Milk and milk products from damaged, punctured or otherwise contaminated containers or product from out-of-code containers shall not be repasteurized for Grade "A" use.
5. Means are provided to prevent contamination of milk and milk products, containers, utensils and equipment by drippings, spillage and splash from overhead piping, platforms or mezzanines.
6. The processing of foods and/or drinks other than Grade "A" milk and milk products are performed to preclude the contamination of such milk and milk products.
7. No product is handled in the milk plant that may create a public health hazard. Permission to handle products other than those defined in Section 1 or to conduct operations in equipment or rooms, other than those for which they are designated, should be provisional and subject to revocation if found objectionable.
8. In no case shall pasteurized milk or milk products, be standardized with unpasteurized milk or milk products, unless the standardized milk or milk product is subsequently pasteurized.
9. Reconstituted or recombined milk and milk products shall be pasteurized after reconstitution or recombining of all ingredients.

 

ITEM 16p. PASTEURIZATION AND ASEPTIC PROCESSING

Pasteurization shall be performed as defined in Section 1, Definition EE of this Ordinance. Aseptic processing shall be performed in accordance with 21 CFR 113, 21 CFR 108 and the Administrative Procedures of Item 16p, sub-items (C), (D) and (E) of this Section. (Refer to Appendix L.)

In all cases, except for the specific exemptions provided for in ADMINISTRATIVE PROCEDURES, #2, pasteurization of raw milk or milk product shall be performed before the raw milk or milk product enters the reverse osmosis (RO), ultra-filtration (UF), evaporator or condensing equipment and shall be performed in the milk plant where the processing is done. All condensed milk and milk products transported to a milk plant for drying shall be re-pasteurized at the milk plant at which it is dried. If condensed whey containing at least forty percent (40%) total solids, has been partially crystallized by cooling, it may be transported to a separate milk plant for drying without re-pasteurization, provided the following conditions are complied with:

1. The condensed, partially crystallized whey is cooled and maintained at 7°C (45°F) or less.
2. Milk tank trucks, dedicated to hauling pasteurized product, shall be used to transport the condensed, partially crystallized whey and shall be washed and sanitized immediately prior to filling and then sealed after filling until unloading.
3. Separate unloading pumps and pipelines shall be provided and used only for the unloading of the condensed, partially crystallized whey. Such pumps and pipelines shall be cleaned and sanitized as a separate cleaning circuit.

PUBLIC HEALTH REASON

Health officials unanimously agree upon the public health value of pasteurization. Long experience conclusively shows its value in the prevention of disease that may be transmitted through milk. Pasteurization is the only practical, commercial measure, which if properly applied to all milk, will destroy all milkborne disease organisms. Examination of lactating animals and milk handlers, while desirable and of great value, can be done only at intervals and; therefore, it is possible for pathogenic bacteria to enter the milk for varying periods before the disease condition is discovered. Disease bacteria may also enter milk accidentally from other sources, such as flies, contaminated water, utensils, etc. It has been demonstrated that the time-temperature combinations specified by this Ordinance, if applied to every particle of milk or milk product will devitalize all milkborne pathogens. Compilations of outbreaks of milkborne disease by the USPHS/FDA, over many years, indicate that the risk of contracting disease from raw milk is approximately fifty (50) times as great as from milk that has been "pasteurized".

A note of caution is in order. Although pasteurization destroys the organisms, it does not destroy the toxins that may be formed in milk and milk products when certain staphylococci are present, as from udder infections, and when the milk or milk product is not properly refrigerated before pasteurization. Such toxins may cause severe illness. Aseptic processing has also been conclusively demonstrated to be effective in preventing outbreaks from milkborne pathogens. Numerous studies and observations clearly prove that the food value of milk is not significantly impaired by pasteurization.

ADMINISTRATIVE PROCEDURES

The pasteurization portion of this Item is deemed to be satisfied when:

1. Every particle of milk or milk product is heated in properly designed and operated equipment that meets the requirements of this Item and Appendix H., to one of the temperatures specified in the following table and held continuously at or above that temperature for at least the time specified:
   
   

   Table 3. Pasteurization Temperature vs. Time

   Temperature	Time
   63°C (145°F) *	30 minutes
   72°C (161°F) *	15 seconds
   89°C (191°F)	1.0 second
   90°C (194°F)	0.5 seconds
   94°C (201°F)	0.1 seconds
   96°C (204°F)	0.05 seconds
   100°C (212°F)	0.01 seconds

   *If the fat content of the milk product is 10 percent (10%) or more, or if it contains added sweeteners, or is concentrated (condensed), the specified temperature shall be increased by 3°C (5°F).

   Provided, that eggnog shall be heated to at least the following temperature and time specifications:

   
   

   Table 3. Pasteurization Temperature vs. Time (continued)

   Temperature	Time
   69°C (155°F)	30 minutes
   80°C (175°F)	25 seconds
   83°C (180°F)	15 seconds

   Provided further, that nothing shall be construed as barring any other pasteurization process, which has been recognized by FDA to be equally efficient and which is approved by the Regulatory Agency.

2. All milk and milk products shall be pasteurized, prior to the entrance into RO, UF, evaporator or condensing equipment, and shall be performed in the milk plant where the processing is done, except that:
   1. If the product is whey, pasteurization is not required, provided:
      1. (1) The product is acid whey (pH less than 4.7); or
      2. (2) It is processed in RO or UF equipment at temperatures at or below 7°C (45°F).
   2. If the product is raw milk for pasteurization, the product may be concentrated by the use of RO or UF membrane filtration without pasteurization, prior to entrance into the equipment, provided the following sampling, testing, design, installation and operational criteria are met:
      1. (1) Prior to processing, all raw milk supplies are sampled and tested for antibiotic residues in accordance with the provisions of Appendix N.;
      2. (2) The RO or UF filtration system is designed and operated to assure that milk or milk product temperature is maintained at or below 7°C (45°F) throughout the process;
      3. (3) The RO or UF system must be equipped with temperature monitoring and recording devices that comply with the applicable specifications outlined in Appendix E. of this Ordinance. At a minimum, milk or milk product temperature shall be monitored and recorded prior to entering the system, prior to entering each stage of the modules in series that contains cooling, and prior to any final cooler; and
      4. (4) If the RO or UF system is not designed, installed and operated in accordance with the above noted criteria, the raw milk or milk product must be pasteurized prior to entering the RO or UF system.
3. All condensed milk and milk products transported to a milk plant for drying shall be re-pasteurized at the milk plant where it is dried.
4. If condensed whey containing at least forty percent (40%) total solids, has been partially crystallized by cooling, it may be transported to a separate milk plant for drying without re-pasteurization, provided the following conditions are complied with:
   1. The condensed, partially crystallized whey is cooled and maintained at 7°C (45°F) or less.
   2. b. Milk tank trucks used to transport the condensed, partially crystallized whey, shall be washed and sanitized immediately prior to filling and are sealed after filling until unloading.
   3. Separate unloading pumps and pipelines shall be provided and used only for the unloading of the condensed, partially crystallized whey. Such pumps and pipelines shall be cleaned and sanitized as a separate cleaning circuit.
5. The design and operation of pasteurization equipment and all appurtenances thereto shall comply with the applicable specifications and operational procedures of Subitems (A), (B), (D) and (E).

 

ITEM 16p.(A) BATCH PASTEURIZATION

All indicating and recording thermometers used in connection with the batch pasteurization of milk or milk products shall comply with the applicable specifications set forth in Appendix H. Specifications for test thermometers and other test equipment appear in Appendix I.

PUBLIC HEALTH REASON

Unless the temperature-control instruments and devices used on pasteurization equipment are accurate within known limits, there can be no assurance that the proper pasteurization temperature is being applied. Pasteurization must be performed in equipment, which is properly designed and operated and which insures that every particle of milk or milk product will be held continuously at the proper temperature for the specified period of time.

Recording thermometers are the only known means for furnishing the Regulatory Agency with a record of the time and temperature of pasteurization. Experience has shown that recording thermometers, due to their mechanical complexity, are not entirely reliable. Therefore, mercury indicating thermometers or equivalent, which are much more reliable, are needed to provide a check on the recording thermometer and assurance that proper temperatures are being applied.

The recording thermometer shows the temperature of the milk or milk product immediately surrounding its bulb, but cannot indicate the temperature of the milk or milk product in other portions of the batch pasteurizer. Similarly, it shows the holding time in manual-discharge vats, but not in automatic-discharge systems. The pasteurizer must; therefore, be so designed and so operated and, where necessary, provided with such automatic controls, as to assure that every portion of the milk or milk product will be subjected to the proper temperature for the required length of time.

Unless the outlet valve and connections to the vats are properly designed and operated, cold pockets of milk or milk product may be held in the outlet valve or pipeline and raw or incompletely pasteurized milk or milk product may leak into the outlet line during the filling, heating or holding period.

Tests have shown that when foam is present on milk or milk product in vats or pockets during pasteurization, the temperature of the foam may be well below the pasteurization temperature. In such cases, pathogenic organisms that may be in the foam will not be killed. Experience indicates that some foam is present at some time in all vats, particularly at certain seasons. Furthermore, in filling vats, milk or milk product frequently is splashed on the surfaces and fixtures above the milk or milk product level, as well as on the underside of the vat cover. Droplets of this splash may drop back into the body of the milk or milk product, and since they may not have been at pasteurization temperature for the required time, they may contain pathogenic organisms. Heating the air above the milk or milk product, above pasteurization temperature, remedies these conditions. When air heating is not provided, its need may frequently be demonstrated by swabbing milk or milk product from the upper vat walls and from the underside of the cover, at the end of the holding period, and running phosphatase tests on the swab samples.

Many milk plant operators have reported that the use of airspace heaters, especially with partly filled vats with un-insulated lids, makes it easier to maintain the milk or milk product at a uniform and sufficiently high temperature. It also helps to prevent the growth of thermophilic organisms and promotes easier cleaning.

Obviously, if the design and construction of pasteurization vats and pocket covers do not prevent leakage, condensation and the entrance of water and dust, the milk or milk product may become contaminated with material containing disease bacteria. Keeping the covers closed during operation will decrease the chance of contaminants such as dust, insects, drip and splash from entering the milk or milk product.

ADMINISTRATIVE PROCEDURES

This Item is deemed to be satisfied when:

1. TIME AND TEMPERATURE CONTROLS FOR BATCH PASTEURIZERS:
   1. Temperature Difference: The pasteurizer shall be so designed that the simultaneous temperature difference between the milk or milk product, at the center of the coldest milk or milk product in the vat, will not exceed 0.5°C (1°F) at any time during the holding period.

      The vat shall be provided with adequate agitation, operating throughout the holding period. No batch of milk or milk product shall be pasteurized unless it covers a sufficient area of the agitator to insure adequate agitation.

   2. Location and Required Readings of Indicating and Recording Thermometers: Each batch pasteurizer shall be equipped with both an indicating and a recording thermometer.

      The thermometers shall not read less than the required pasteurization temperature throughout the required holding period. The milk plant operator shall check the temperature shown by the recording thermometer against the temperature shown by the indicating thermometer at the start of the holding period. This comparison shall be noted on the recording thermometer chart. The recording thermometer shall not read higher than the indicating thermometer. No batch of milk or milk product shall be pasteurized unless it is sufficient to cover the bulbs of both the indicating and the recording thermometer.

   3. Assurance of Minimum Holding Periods: Batch pasteurizers shall be so operated that every particle of milk or milk product will be held at not less than the minimum pasteurization temperature continuously for at least thirty (30) minutes. When milk or milk products are raised to pasteurization temperature in the vat, and cooling is begun in the vat simultaneously with or before the opening of the outlet valve, the recording chart shall show at least thirty (30) minutes, at not less than minimum pasteurization temperature. When milk or milk products are preheated to pasteurization temperature before entering the vat, the recording chart shall show a holding period of at least thirty (30) minutes, at not less than the minimum pasteurization temperature plus the time of filling from the level of the recording thermometer bulb. When cooling is begun in the batch pasteurizer, after opening the outlet valve, or is done entirely outside the batch pasteurizer, the recording chart shall show at least thirty (30) minutes at not less than the minimum pasteurization temperature plus the time of emptying to the level of the recording thermometer bulb.

      When the recording time interval on the recording chart at the pasteurization temperature includes filling and/or emptying time, such intervals shall be indicated on the recording chart, by the operator, by removing the recording thermometer bulb from the milk or milk product for a sufficient time to depress the pen; or by turning cold water into the vat jacket at the end of the holding period; or by inscribing the holding time on the recording chart. The filling time and the emptying time for each batch pasteurizer, so operated, shall be determined by the Regulatory Agency, initially and after any change, which may affect these times.

      No milk or milk product shall be added to the batch pasteurizer after the start of the holding period.

2. AIRSPACE HEATING:
   1. Means shall be provided and used in batch pasteurizers to keep the atmosphere above the milk or milk product at a temperature not less than 3°C (5°F) higher than the minimum required temperature of pasteurization, during the holding period. (Refer to Appendix H.)
   2. Each batch pasteurizer shall be equipped with an airspace thermometer. The surface of the milk or milk product shall be at least 25 millimeters (1 inch) below the bottom of the thermometer bulb when the vat is in operation.
   3. The temperature shown by the airspace thermometer shall be recorded on the recording thermometer chart at the start of the holding period and at the end of the holding period, at a given time or reference point as indicated on the recording chart.
3. INLET AND OUTLET VALVES AND CONNECTIONS:

   The following definitions shall apply to inlet and outlet valves and connections:

   1. "Valve Stop" shall mean a guide which permits turning the valve plug to, but not beyond, the fully closed position.
   2. "The Fully Open Position" shall mean that position of the valve seat that permits the maximum flow into or out of the pasteurizer.
   3. "The Closed Position" shall mean any position of the valve seat that stops the flow of milk into or out of the pasteurizer.
   4. "The Fully Closed Position" shall mean that closed position of the valve seat which requires the maximum movement of the valve to reach the fully open position.
   5. "The Just-Closed Position" shall mean that closed position of a plug-type valve in which the flow into or out of the holder is barely stopped, or any position within 2 millimeters (0.078 inches) thereof as measured along the maximum circumference of the valve seat.
   6. "Leakage" shall mean the entrance of unpasteurized milk or milk product into a batch pasteurizer during the holding or emptying period, or the entrance of unpasteurized milk or milk product into any pasteurized milk or milk product line at any time.
   7. "Leak-Protector Valve" shall mean a valve provided with a leak-diverting device, which when the valve is in any closed position, will prevent leakage of milk or milk product past the valve.
   8. "Close-Coupled Valve" shall mean a valve, the seat of which is either flush with the inner wall of the pasteurizer or so closely coupled that no milk or milk product in the valve is more than 0.5°C (1°F) colder than the milk or milk product at the center of the pasteurizer at any time during the holding period.

      A close-coupled valve, which is not truly flush, shall be considered as satisfying this requirement when:

      1. (1) The vat outlet is so flared that the smallest diameter of the large end of the flare is not less than the diameter of the outlet line, plus the depth of the flare; and
      2. (2) The greatest distance from the valve seat to the small end of the flare is not greater than the diameter of the outlet line; and
      3. (3) In the case of batch pasteurizers, the outlet and the agitator are so placed as to insure that milk or milk product currents will be swept into the outlet.
4. DESIGN AND INSTALLATION OF VALVES AND CONNECTIONS:

   All valves and connections shall comply with the following requirements:

   1. Valves and pipeline connections shall meet the requirements of Item 10p.
   2. All pipelines and fittings shall be so constructed and so located that leakage will not occur.
   3. To prevent clogging, and to promote drainage, all leak-protection grooves in plug-type outlet valves shall be at least 5 millimeters (0.187 inches wide) and at least 2.3 millimeters (0.094 inches) deep at the center. Mating grooves shall provide these dimensions throughout their combined length, whenever the valve is in, or approximately in, the fully closed position. All single leak grooves, and all mating leak grooves when mated, shall extend throughout the entire depth of the seat, so as to divert leakage occurring at all points throughout the depth of the seat and so as to prevent air binding. Washers or other parts shall not obstruct leak-protector grooves.
   4. A stop shall be provided on all plug-type outlet valves in order to guide the operator in closing the valve so that unpasteurized milk or milk product may not inadvertently be permitted to enter the outlet line. The stop shall be so designed that the plug will be irreversible when the plug is provided with any grooves or their equivalent, unless duplicate, diametrically opposite grooves are also provided. Stops shall be so designed that the operator cannot turn the valve beyond the stop position, either by raising the plug or by any other means.
   5. Outlet valves, in addition to the requirements listed above, shall be so designed as to prevent the accumulation of unpasteurized milk or milk product in the milk or milk product passages of the valve when the valve is in any closed position.
   6. All outlets from vat pasteurizers shall be equipped with close-coupled leak-protector valves or be otherwise similarly protected during filling, holding and emptying periods.
   7. All leak-protector grooved outlet valves shall be installed in the proper position to insure the function of the leak-protector groves and the drainage of the leak-detector valve.
   8. All outlet valves shall be kept fully closed during filling, heating, and holding periods.
   9. Close-coupled vat pasteurizer outlet valve bodies and plugs shall be made of stainless steel or of other materials that have heat transfer properties at least equal to stainless steel.
   10. All inlet pipelines are disconnected during the holding and emptying periods.
5. RECORDING CHARTS:

   All recording thermometer charts shall comply with all the applicable requirements of Item 16p(E)1.a.

 

ITEM 16p.(B) HIGH-TEMPERATURE-SHORT-TIME (HTST) CONTINUOUS-FLOW PASTEURIZATION

PUBLIC HEALTH REASON

(Refer to the Public Health Reason under Item 16p and 16p(A))

ADMINISTRATIVE PROCEDURES

This Item is deemed to be satisfied when:

1. INDICATING THERMOMETERS AND RECORDER/CONTROLLER INSTRUMENTS:
   All indicating thermometers and recorder/controller instruments and devices used in connection with the HTST, continuous-flow pasteurization of milk or milk products shall comply with the applicable specifications set forth in Appendix H.
2. AUTOMATIC MILK CONTROLLER:
   Each HTST, continuous-flow pasteurization system shall be equipped with an automatic milk-flow control of the diversion type, which complies with the following definition, specifications and performance requirements:
   1. Automatic Milk or Milk Product-Flow Controls: The term "automatic milk or milk product-flow controls" shall mean those safety devices which control the flow of milk or milk product in relation to the temperature of the milk or milk product or heating medium and/or pressure, vacuum or other auxiliary equipment. Milk or milk product-flow controls shall not be considered as part of the temperature control equipment. Milk or milk product-flow controls shall be of the flow-diversion type, which automatically cause the diversion of the milk or milk product in response to a sub-legal pasteurization temperature. At sub-legal temperatures, FDDs return the milk or milk product to the raw milk or milk product side of the heating system continuously until legal pasteurization temperatures are obtained, at which time, the device restores forward-flow through the pasteurizer.
   2. FDDs: All FDDs used in continuous pasteurizers shall comply with the following or equally satisfactory specifications:
      1. (1)The forward-flow of milk or milk product below the minimum pasteurization temperature shall be prevented by requiring the timing pump to be de-energized when the milk or milk product is below the pasteurization temperature and the valve is not in the fully diverted position; or by any other equally satisfactory means.
      2. (2) When a packing gland is used to prevent leakage around the actuating stem, it shall be impossible to tighten the stem-packing nut to such an extent as to prevent the valve from assuming the fully diverted position.
      3. (3) A leak-escape shall be installed on the forward-flow side of the valve seat. However, when backpressure is exerted on the forward-flow side of the valve seat, while the milk or milk product-flow is being diverted, the leak-escape should lie between two valve seats or between two portions of the same seat, one upstream and the other downstream from the leak-escape. The leak-escape shall be designed and installed to discharge all leakage to the outside, or to the constant-level tank through a line separate from the diversion line. Provided, that when leakage is discharged to the constant-level tank, a sight glass shall be installed in the leak-escape line to provide a visual means of leak detection.
      4. (4) The closure of the forward-flow seat shall be sufficiently tight so that leakage past it will not exceed the capacity of the leak-escape device, as evidenced when the forward-flow line is disconnected; and, in order that proper seating may not be disturbed, the length of the connecting rod shall not be adjustable by the user.
      5. (5) The FDD shall be so designed and installed that failure of the primary motivating power shall automatically divert the flow of milk or milk product.
      6. (6) The FDD shall be located downstream from the holder. The flow-control sensor shall be located in the milk or milk product line not more than 46 centimeters (18 inches) upstream from the FDD.
      7. (7) The FDD may be located downstream from the regenerator and/or cooler section, provided, that when the FDD is located downstream from the regenerator and/or cooler section, the FDD s hall be automatically prevented from assuming the forward-flow position until all product-contact surfaces between the holding tube and FDD have been held at or above the required pasteurization temperature continuously and simultaneously for at least the required pasteurization time as defined in Definition EE of this Ordinance.
      8. (8) The pipeline from the diversion port of the FDD shall be self-draining and shall be free of restrictions or valves; unless such restrictions are noticeable and valves are so designed that stoppage of the diversion line cannot occur. In the case of HHST systems, which have the FDD located downstream from the regenerator and/or cooler and are inter-wired or are computer controlled to thoroughly clean the system, including the divert pipeline before the re-starting of production, a cooling section, which is not self-draining, may be present in the divert pipeline.
      9. (9) When it is used, the pipeline from the leak-detector port of the FDD shall be self-draining and shall be free of restrictions or valves.
      10. (10) For the timing pump, a one (1) second maximum "off" time delay is allowed to maintain the flow-promoting device in the "on" position through the travel time of the FDD.
      11. (11) If the area between the divert and leak-detect valve seats is not self-draining when the FDD is in the diverted position, a delay of at least one (1) second and not more than five (5) seconds is required between the movement of the divert and leak-detect valves when the FDD assumes the forward-flow position. Except that, the delay may be longer than five (5) seconds if: the timing system is a magnetic flow meter based timing system; or if the holding time in diverted-flow through an unrestricted divert valve line is longer than the required pasteurization time as specified in Definition EE of this Ordinance; and except that, no time delay is required in pasteurization systems in which the FDD is located downstream from the pasteurized regenerator and in which all forward-flow product-contact surfaces of the FDD are sanitized, or sterilized during the normal start-up process.
      12. (12) In the case of HHST pasteurizing systems utilizing temperatures and holding times to meet the UP definition of this Ordinance, the FDD may be located downstream of the regenerator and/or cooler section. Said FDD may alternatively be a system of the "Steam-Block Type" as described in Appendix H. This FDD system shall allow for the flow of water and/or milk or milk product to the constant-level tank through appropriate valves and coolers during sterilization and when diverted.
   3. Milk or Milk Product-Flow Controller Instrumentation: The following requirements shall be met with respect to the instrumentation of the milk or milk product-flow controller:
      1. (1) The thermal-limit-controller shall be set and sealed so that forward-flow of milk or milk product cannot start unless the temperature at the controller sensor is above the required pasteurization temperature as defined in Definition EE of this Ordinance for the milk or milk product, and the process used, nor continue during descending temperatures when the temperature is below the required pasteurization temperature. The seal shall be applied by the Regulatory Agency after testing, and shall not be removed without immediately notifying the Regulatory Agency. The system shall be so designed that no milk or milk product can be bypassed around the controller sensor that shall not be removed from its proper position during the pasteurization process. The cut-in and cut-out milk or milk product temperatures, as shown by the indicating thermometer, shall be determined at the beginning of each day's operation and entered upon the recorder chart daily by the milk plant operator.
      2. (2) In the case of pasteurization systems, with the FDD located downstream from the regenerator and/or cooler section, additional temperature controllers and timers shall be inter-wired with the thermal-limit-controller, and the control system shall be set and sealed so that forward-flow of milk or milk product cannot start until all product-contact surfaces between the holding tube and FDD have been held at or above the required pasteurization temperature, continuously and simultaneously for at least the required pasteurization time as defined in Definition EE of this Ordinance. The control system shall also be set and sealed so that forward-flow cannot continue when the temperature of the milk or milk product in the holding tube is below the required pasteurization temperature. Provided, that for systems used for the processing of milk or milk products labeled as UP, it is not necessary to set and seal the thermal-limit-controller at or above 138°C (280°F). Also, provided that these systems shall meet all the public health control requirements for HHST systems, and that the recorder-controller chart shows that the UP milk or milk product has been processed at a minimum temperature of 138°C (280°F), and has been verified by the Regulatory Agency to have a calculated holding time of at least two (2) seconds. The seal, if required, shall be applied by the Regulatory Agency after the equipment has been tested, and shall not be removed without immediately notifying the Regulatory Agency. The system shall be so designed that no milk or milk product can be bypassed around the control sensors, which shall not be removed from their proper position during the pasteurization process. For these pasteurization systems, daily measurement by the operator of the cut-in and cut-out temperatures is not required.
      3. (3) Manual switches for the control of pumps, homogenizers or other devices, which produce flow through the holder, shall be wired so that the circuit is completed only when milk or milk product is above the required pasteurization temperature as defined in Definition EE of this Ordinance for the milk or milk product and the process used, or when the FDD is in the fully-diverted position.
   4. Holding Tube:
      1. (1) Holding tubes shall be designed to provide for the holding of every particle of the milk or milk product for at least the time required in Definition EE of this Ordinance for the milk or milk product and the process used.
      2. (2)The holding tube shall be so designed that the simultaneous temperature difference between the hottest and coldest milk or milk product, in any cross section of flow, at any time during the holding period, will not be greater than 0.5°C (1°F).This requirement may be assumed to have been satisfied, without testing, in tubular holders of 17.8 centimeters (7 inches) or smaller diameter that are free of any fittings through which the milk or milk product may not be thoroughly swept.
      3. (3) No device shall be permitted for short-circuiting a portion of the holding tube to compensate for changes in rate of milk or milk product-flow. Holding tubes shall be installed so that sections of pipe cannot be left out, resulting in a shortened holding time.
      4. (4) The holding tube shall be arranged to have a continuously upward slope in the direction of flow of not less than 2.1 centimeters per meter (0.25 inches per foot).
      5. (5) Supports for holding tubes shall be provided to maintain all parts of the holding tubes in a fixed position, free from any lateral or vertical movement.
      6. (6) The holding tube shall be so designed that no portion between the inlet and the recorder-controller temperature sensor is heated.

      7. The following Items apply to HHST systems:

         (7) The holding time for HHST systems must be determined from the pumping rate rather than by the salt conductivity test, because of the short holding tube. The holding tube length must be such that the fastest flowing particle, of any milk or milk product, will not traverse the holding tube in less than the required holding time. Since laminar flow, the fastest flowing particle travels twice as fast as the average flowing particle, can occur in the holding tube during pasteurization of high-viscosity milk or milk products, holding tube lengths are calculated as twice the length required to hold the average flow for the time standard.
      8. (8) With the direct steam heating processes, the holding time is reduced because the milk or milk product volume increases as the steam condenses to water during heating in the injector. This surplus water is evaporated as the pasteurized milk or milk product is cooled in the vacuum chamber. For example, with a 66°C (120°F) increase by steam injection, which is probably the maximum temperature rise that will be used, a volume increase of twelve percent (12%) will occur in the holding tube. The measurement of the average flow rate, at the discharge of the pasteurizer, does not reflect this volume increase in the holding tube. However, this volume increase, i.e., holding time decrease, must be considered in the calculations.
      9. (9) For those HHST systems capable of operating with less that 518 kPa (75 psig) pressure in the holding tube, a pressure limit indicator/pressure switch must be interwired so that the FDD will move to the divert position if the milk or milk product pressure falls below a prescribed value. For operating temperatures between 89°C (191°F) and 100°C (212°F) the instrument must be set at 69 kPa (10 psi). To prevent vaporization in the holding tube, which may substantially reduce residence times, HHST systems operating above 100°C (212°F), the instrument must be set at 69 kPa (10 psi) above the boiling pressure of the product, at its maximum temperature in the holding tube.
      10. (10) With the steam injection process, a differential pressure limit indicator across the injector is needed to keep the heated milk or milk product in the liquid phase and to ensure adequate isolation of the injection chamber. The instrument must have a differential pressure switch so that the FDD will move to the divert position if the pressure drop across the injector falls below 69 kPa (10 psi).
   5. Indicating and Recording Thermometers:
      1. (1) An indicating thermometer shall be located as near as practicable to the temperature sensor of the recorder/controller, but may be located a short distance upstream from the latter where milk or milk product between the two thermometers does not differ significantly in temperature.
      2. (2) The temperature shown by the recorder/controller shall be checked daily by the milk plant operator against the temperature shown by the indicating thermometer. Readings shall be recorded on the chart. The recorder/controller shall be adjusted to read no higher than the indicating thermometer.
      3. (3) The recorder/controller charts shall comply with the applicable provisions of Item 16p(E)1.a.
   6. Flow-Promoting Devices:
      1. (1) The pump or pumps and other equipment which may produce flow through the holding tube shall be located upstream from the holding tube, provided that pumps and other flow-promoting devices may be located downstream from the holding tube, if means are provided to eliminate negative pressure between the holding tube and the inlet to such equipment. When vacuum equipment is located downstream from the holding tube, an effective vacuum breaker, plus an automatic means of preventing a negative pressure in the line between the FDD and the vacuum chamber, shall be acceptable.
      2. (2) The speed of pumps or other flow-promoting devices, governing the rate of flow through the holding tube, shall be so controlled as to insure the holding of every particle of milk or milk product for at least the time required as defined in Definition EE of this Ordinance for the milk or milk product and the process used. In all cases, the motor shall be connected to the timing pump by means of a common drive shaft, or by means of gears, pulleys, or a variable-speed drive, with the gear box, the pulley box or the setting of the variable speed protected in such a manner that the holding time cannot be shortened without detection by the Regulatory Agency. This shall be accomplished by the application of a suitable seal(s) after being tested by the Regulatory Agency and such seal(s) shall not be broken without immediately notifying the Regulatory Agency. This provision shall also apply to all homogenizers used as timing pumps. Variable speed drives, used in connection with the timing pump, shall be so constructed that wearing or stretching of the belt results in a slowdown, rather than a speedup, of the pump.

         The metering or timing pump shall be of the positive-displacement type or shall comply with the specifications for magnetic flow meter based timing systems as outlined in Appendix H. Timing pumps and homogenizers, when used as a timing pump, shall not have by-pass lines connected from their outlet pipelines to their inlet pipelines during processing if an additional flow-promoting or vacuum producing device is located within the system. When a homogenizer is used in conjunction with a timing pump it shall be either:

         1. i) Of larger capacity than the timing pump: In which case, an unrestricted, open, recirculation line shall be used to connect the outlet pipeline from the homogenizer to its inlet line. The recirculation line must be of at least the same or larger diameter than the inlet pipeline feeding milk or milk product to the homogenizer. A check-valve, allowing flow from the outlet line to the inlet line, may be used in the recirculating line, provided it is of the type which provides a cross-sectional area at least as large as the recirculating line.
         2. ii) Of smaller capacity than the timing pump: In which case, a relief line and valve shall be used. Such relief line shall be located after the timing pump and before the inlet to the homogenizer and shall return milk or milk product to the constant-level tank or to the outlet of the constant-level tank, upstream of any booster pump or other flow-promoting device.

            For those systems that do not homogenize all milk or milk products and wish to utilize a by-pass line to by-pass the homogenizer while processing such milk or milk product, the by-pass line must be connected with valves that are so designed that both lines cannot be open at the same time. This may be accomplished with three (3)-way plug valves with properly designed and operating pins or other automatic, fail-safe valves that accomplish the same objective.

      3. (3)The holding time shall be taken to mean the flow time of the fastest particle of milk or milk product at or above the required pasteurization temperature as defined in Definition EE of this Ordinance for the milk or milk product and the process used, throughout the holding tube section; i.e., that portion of the system that is outside of the influence of the heating medium, slopes continuously upward in the downstream direction and is located upstream from the FDD. Tests for the holding time shall be made when all equipment and devices are operated and adjusted to provide for maximum flow. When a homogenizer is located upstream from the holding tube, the holding time shall be determined with the homogenizer in operation with no pressure on the homogenizer valves.

         For those systems which do not homogenize all milk or milk products and utilize by-pass lines as outlined in f.(2)(i) above, the holding time shall be tested in both flow patterns and the fastest time used. The holding time shall be tested during both forward and diverted-flow.If it is necessary to lengthen the holding time during diverted-flow, an identifiable restriction may be placed in the vertical portion of the diversion pipeline. When vacuum equipment is located downstream from the holding tube, the holding time shall be tested with the timing pump operating at maximum flow and the vacuum equipment adjusted to provide for the maximum vacuum.The holding time shall be tested in both forward and diverted-flow by the Regulatory Agency initially; semiannually thereafter; after any alteration or replacement that may affect the holding time; and whenever the seal of the speed setting has been broken.

   7. Heating by Direct Addition of Steam: Steam injection is an inherently unstable process; accordingly, when steam is injected into a fluid, condensation of the steam may not be completed inside the injector unless the proper design criteria are used. Lack of complete condensation inside the injector would cause temperature variations in the holding tube that could lead to some milk or milk product particles being processed below pasteurization temperature. When culinary steam is injected directly into milk or milk product, as the means of terminal heating to achieve pasteurization temperature, the steam injector shall be designed, installed and operated to comply with the following or equally satisfactory specifications:
      1. (1) The milk or milk product and steam flows must be isolated from pressure fluctuations inside the injection chamber. One (1) method of isolation is to insert supplementary orifices on the milk or milk product inlet and the heated milk or milk product outlet of each injector. The two (2) supplementary orifices must be sized for at least a 69 kPa (10 psi) milk or milk product pressure drop across the injector during a simulation of normal operations. Excessive vibrations, pressure fluctuations or erratic noise levels indicate an unstable steam injection system and a need to check the isolation of the injection chamber.
      2. (2) The process should be as free as possible of non-condensable gases that may evolve from the product or be carried in the steam supply. Any two-phase flow caused by the non-condensable gases would displace the product in the holding tube, resulting in reduced residence times. In addition, these gases in the steam supply may also markedly alter the condensation mechanism at the point of injection. Accordingly, the steam boiler shall be supplied with a de-aerator. The de-aerator will aid in keeping the product in the holding tube as free as possible of non-condensable gases.
   8. Prevention of Milk or Milk Product Adulteration with Added Water:
      1. (1) When culinary steam is introduced directly into the milk or milk product, downstream from the FDD, means shall be provided to preclude the addition of steam to the milk or milk product, unless the FDD is in the forward-flow position. This provision may be satisfied by the use of an automatic steam control valve with a temperature sensor located downstream from the steam inlet, or by the use of an automatic solenoid valve installed in the steam line and so wired through the FDD controls, so that steam cannot flow unless the FDD is in the forward-flow position.
      2. (2) When culinary steam is introduced directly into the milk or milk product, automatic means, i.e., stand-alone and/or PLC-based ratio control system, shall be provided to maintain a proper temperature differential between incoming and outgoing milk or milk product to preclude dilution with water.
      3. (3) Where a water feed line is connected to a vacuum condenser and the vacuum condenser is not separated from the vacuum chamber by a physical barrier, means shall be provided to preclude the backup and overflow of water from the