New York Codes, Rules and Regulations › Title 1 - DEPARTMENT OF AGRICULTURE AND MARKETS › Chapter I - Milk Control › Subchapter A - Dairy Products (Article 4, Agriculture and Markets Law) › Part 2 - Requirements For The Production, Processing, Manufacturing And Distribution Of Milk And Milk Products › Sanitation Requirements Applicable to the Processing and Manufacturing of Milk, Lowfat Milk, Skim Milk, Milk Products, Goat Milk, Goat Milk Products, Sheep Milk Products, Melloream and Frozen Desserts › Section 2.47 - Pasteurizers employing regenerative heating-item 16p(c)

Current through Register Vol. 46, No. 28, July 10, 2024
(a) Milk-to-milk regenerative heating.
					 Pasteurizers employing milk-to-milk regenerative heating with both sides closed
					 to the atmosphere shall comply with the following or equally satisfactory
					 specifications:
(1) Regenerators shall be
					 constructed, installed and operated so that pasteurized milk in the regenerator
					 will automatically be under greater pressure than raw milk in the regenerator
					 at all times.
(2) The pasteurized
					 milk, between its outlet from the regenerator and the nearest point downstream
					 open to the atmosphere, shall rise to a vertical elevation of 12 inches above
					 the highest raw milk level downstream from the constant-level tank and shall be
					 open to the atmosphere at this or a higher elevation.
(3) The overflow of the top rim of the
					 constant-level raw milk tank shall always be lower than the lowest milk level
					 in the regenerator.
(4) No pump or
					 flow-promoting device which can affect the proper pressure relationships within
					 the regenerator shall be located between the pasteurized milk outlet from the
					 regenerator and the nearest downstream point open to the atmosphere.
(5) No pump shall be located between the raw
					 milk inlet to the regenerator and the raw milk supply tank, unless it is
					 designed and installed to operate only when milk is flowing through the
					 pasteurized milk side of the regenerator, and when the pressure of the
					 pasteurized milk is higher than the maximum pressure produced by the pump. This
					 may be accomplished by wiring the booster pump so that it cannot operate
					 unless:
(i) the metering pump is in
					 operation;
(ii) the flow-diversion
					 device is in forward-flow position; and
(iii) the pasteurized milk pressure exceeds,
					 by at least one psi, the maximum pressure developed by the booster pump.
					 Pressure gauges shall be installed at the raw milk inlet to the regenerator and
					 the pasteurized milk outlet of the regenerator or the outlet of the cooler. The
					 accuracy of required pressure gauges shall be checked by the regulatory agency
					 on installation, quarterly thereafter, and following repair or
					 adjustment.
(6) The
					 motor, casing and impeller of the booster pump shall be identified, and such
					 records thereof maintained as directed by the commissioner. All electric wiring
					 interconnections should be in permanent conduit (except that rubber-covered
					 cable may be used for final connections), with no electrical connections to
					 defeat the purpose of any provisions of this Part.
(7) All raw milk in the regenerator will
					 drain freely back into the constant-level raw milk tank when the raw milk
					 pump(s) are shut down and the raw milk outlet from the regenerator is
					 disconnected.
(8) When vacuum
					 equipment is located downstream from the flow-diversion device, means shall be
					 provided to prevent the lowering of the pasteurized milk level in the
					 regenerator during periods of diverted flow or shutdown. An effective vacuum
					 breaker, plus an automatic means of preventing a negative pressure, shall be
					 installed in the line between the vacuum chamber and the pasteurized milk inlet
					 to the regenerator.
(9) In the case
					 of HHST pasteurization systems utilizing the temperatures of 191° F
					 (89° C) and above and holding times of one second or less, with the
					 flow-diversion device located downstream from the regenerator and/or cooler
					 section, the requirement that the pasteurized product from the outlet of the
					 regenerator or cooler shall rise to vertical elevation of 12 inches above the
					 highest raw product level downstream from the constant-level tank and shall be
					 open to the atmosphere at this or a higher elevation, may be eliminated,
					 provided that a differential pressure controller is used to monitor the highest
					 pressure in the raw product side of the regenerator and the lowest pressure in
					 the pasteurized side of the regenerator, and the controller is interlocked with
					 the flow-diversion device and is set and sealed so that whenever improper
					 pressures occur in the regenerator, forward flow of product is automatically
					 prevented and will not start again until all product-contact surfaces between
					 the holding tube and flow-diversion device have been held at or above the
					 required pasteurization temperature, continuously and simultaneously for at
					 least the required pasteurization time as defined in section
					 2.2(a) 
					 of this Part.
(10) When culinary
					 steam is introduced directly into milk or milk products, as the means of
					 terminal heating to achieve pasteurization temperature, and vacuum equipment is
					 located downstream from the holding tube, the requirement that a vacuum breaker
					 be installed at the inlet to the pasteurized side of the regenerator may be
					 eliminated, provided that the differential pressure controller is installed and
					 wired to control the flow-diversion device as described in paragraph (9) of
					 this subdivision.
(11) When the
					 differential pressure controller is installed and wired to control the
					 flow-diversion device as described in paragraph (9) of this subdivision, the
					 raw product booster pump may be permitted to run at all times, provided that
					 the metering pump is in operation.