Page 53 - Microsoft Word -Cow Book 10-06-09 final update.doc

6. Discolored, opaque, or rough and/or cracked flexible milk hoses or tubing.
(Sunlight sometimes will remove opaqueness from milk tygon tubing).

7. Open threads in product zones.

8. Direct read milk measuring tubes must be installed to be easily cleanable,
readily accessible for inspection and designed so that all product in the gauge
will discarded so that no product will enter the tank outlet line nor re-enter the
tank. The valves serving these tubes must be close-coupled. (See 3-A
Standard Number 13-##). Close coupled is defined in this Standard as being
no more than the smaller of twice the nominal diameter of the passage, or
five (5) inches maximum. (## is the most current revision)

9. The internal parts of plate coolers should be periodically examined for
construction and cleaning problems. Pay special attention to the gaskets and
inner plate surfaces and check them thoroughly for cracks, holes, or buildup of
milk solids or fat deposits. Plate coolers that have more than one section
(pass) must have special consideration to provide for draining following
mechanical cleaning. By-pass lines fitted onto plate coolers must be so
installed to eliminate any dead end lines that would allow the accumulation of
milk during the milking operations.

10.Some "butterfly" type valves may be difficult to disassemble and inspect.
Some are even impossible without a full mechanics tool kit. Judgment must
be used in determining whether these valves meet the requirements. Once
taken apart the inner gaskets should be examined for construction
compliance. The so called "green bodied" valve is not acceptable for use in
product or cleaning solution lines.

11.Any Dairy Herd Information Association (DHIA) testing equipment and
appurtenances must be evaluated for construction (and storage and cleaning)
problems.

12.Milk pipelines should be provided with access points for inspection. In
systems with welded pipelines diameters of 2" or more, inspection points, in
addition to entrances and exits, are to be provided at intervals sufficient to
determine general condition of the interior surfaces. Circular pipelines should
follow the recommendations of the state regulatory agency for
access/inspection points. In many states, access points are required at four
equi-distant points in these rotary type milking barns.

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