(a) All equipment having any surface in contact with the milk and all solution lines, wash tanks, fittings, vacuum lines from air separator to moisture trap shall be constructed of stainless steel, nickel alloy, heat-resistant glass or equally corrosion-resistant material that is nontoxic and nonabsorbent.

(b) All milk contact surfaces, whether a ground or bright annealed finish, shall be finished to an equivalent of not less than 120-grit finish, properly applied, and shall be free from pits, cracks, and crevices.

(c) The milk pipeline system shall be installed in a manner to permit being disassembled for inspection.

(d) Sanitary milk pipes which are not washed in place shall be no longer than the washing and sterilizing facilities will accommodate.

(e) The entire milk line shall be installed so as to have a positive slope and be completely drained. It must be supported by permanent hangers or other means to prevent sagging and to maintain alignment.

(f) The vacuum line from the air separator to the moisture trap must have at least one-half inch downward slope in the first foot.

(g) The vacuum line from the air separator shall not extend in a vertical position above the separator more than six inches including the elbow.

(h) The entire milk pipeline and solution pipeline must be of the same inside diameter when a pressure circulating system of clean-up is used.

When a vacuum system of circulation is used, the inside diameter of the pipelines and appurtenances may vary in size if sufficient turbulence is created during circulation of the solutions to contact and clean and sanitize all surfaces. Injection of pulses of air is one method of increasing turbulence.

(i) Solution lines must be disconnected from milk pipelines during milking unless (1) the solution or wash line is disconnected from any solution or wash tank for the entire milking, and (2) all solution or wash lines are drained before milking begins.

Vacuum lines may be connected to milk pipelines only when areas not properly cleaned and sanitized are effectively isolated from milk contact areas.

Water lines must be disconnected from milk lines during milking.

(j) All milk pumps and attachments shall be protected from possible contamination. If legs are used, they shall be smooth with rounded ends and no exposed threads. Legs made of hollow stock shall be sealed. On pumps with legs designed to be fixed to the floor, the minimum clearance between the lowest part of the base and the floor shall be four inches. Readily portable pumps not permanently attached may have leg heights of two inches. (Readily portable pumps are defined as those having a base area of not more than one square foot, or, in the case of motor-mounted pumps, an area encompassed by the legs that does not exceed one square foot.) Bases when used shall be constructed without ribs or flanges and shall have a smooth top and bottom surface. Pumps which because of their size and type cannot be mounted on legs, shall be mounted on a base designed for grouting and sealing. All milk pumps and attachments must be a sufficient distance from walls to permit proper cleaning.

(k) (Section 33481 Food and Agricultural Code.) When a dump tank is used in the milking barn, it must be located in accordance with Section 481.5 of the Administrative Code and must be kept covered except when milk is being poured. Milk on test days and strippings shall enter the milk pipeline through the dump tank. If dump tank is located next to the barn wall between milkhouse and barn, the barn wall must be at least six feet high.

(l) The Cleaned-in-Place (CIP) wash tank shall be located in the milkhouse; any other location must be approved by the director.

(m) A thermometer must be installed on the discharge end of the circulating system and the washing solution temperature during circulation cleaning maintained at 115°F. or above.

(n) Milk tanks, dump tanks, releasers, when located in passageway shall be constructed so as to protect milk from flies, dust and contamination.

(o) Ends of milk lines, stall cocks and other pipeline openings subject to contamination shall be capped or otherwise protected.

(p) Sight glasses shall not be permitted on milk pipelines when such milk pipelines are cleaned by circulation.

(q) The circulating pump shall be of a size sufficient to fill the pipelines and cause enough turbulence to insure adequate cleaning and shall deliver not less than 25 gallons of solution per minute at discharge end of 1 ½ -inch lines and corresponding volumes for other size pipes when pressure system of circulation is used.

(r) Air line from moisture trap to milk releaser or air separator shall be washed and sterilized after each time used.

(s) The outside of milk pipelines and equipment shall be kept clean.

(t) Vacuum pumps, motors, or any machinery that may emit oil, fumes, grease, odors, or any objectionable material shall not be located over or near milk equipment.

(u) Milk pipelines connected by the so-called slip joint method, with or without an “O” ring gasket must be disassembled for cleaning after each use.

(v) Gaskets, when used, must be made of a low-absorbent material which is smooth and nontoxic. Paper and fiberlike gaskets are not acceptable. Gaskets must be self-positioning and of such design to form a substantially flush interior joint.

(w) Openings for inspection must be provided on welded metal pipeline installations in order to provide access to determine the cleaning efficiency of Cleaned-in-Place systems.

(x) Milk pumps, pipelines, and air separators which are a part of an enclosed pipeline system may be installed in the passageway or an area approved by the Director, in the milking barn, provided, that all of the equipment is protected from contamination at all times. Plate type or internal tubular coolers may be installed in the milkhouse or passageway.

(y) Milking machine claws and milker units may be cleaned in place in the milking barn, provided, they are effectively cleaned, sanitized, and drained by the CIP system, and subsequently protected from dust, flies, contact with animals, or other contamination until the next milking is begun.

Whenever units are dismantled for hand cleaning, such cleaning shall be done in the milkhouse.