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Material deterioration prevention and control |
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|  MIL-H-12732E
3,3 Material. Material shall be as specified herein. Materials not
specified shall be selected by the contractor and shall be subject to all
provisions of this specification (see 6.7). The material selected shall have no
adverse effect on health of personnel when used for its intended purpose.
Quest ions pertlnent to this effect shall be referred by the procuring activity
to the appropriate medical service who will act as an advisor to the procuring
activity (see 6.4). Plastic piping system components and related materials
shall conform to NSF STD 14.
3.3.1 Material deterioration prevention and control. The hypochlorinator
shall be fabricated from compatible materials, inherently corrosion resistant or
treated to provide protection against the various forms of corrosion and
deterioration that may be encountered in any of the applicable operating and
storage environments to which the hypochlorinator may be exposed.
Dissimilar metals shall not be used in intimate
3.3.1.1 Dissimilar metals.
Dissimilar
contact with each other unless protected against galvanic corrosion.
metals and methods of protection are defined and detailed in MIL-STD-889.
3.3.1.2 Identification of materials and finishes. The contractor shall
identify the specific material, material finish or treatment for use with
component and subcomponent, and shall make information available upon request to
the contracting officer or designated representative.
3.3.2 Tubing.
Aluminum tubing shall conform to ASTM B 210 or
3.3.2.1 Aluminum tubing.
B 221.
3.3.2.2 Plastic tubing. All plastic tubing sections between water supply,
hypochlorite solution reservoir, and hypochlorinator shall be nominal 3/8-inch
inside diameter [ID) by 5/8-inch outside diameter (OD) or 5/16-inch ID by
9/16-inch OD, lengths as required. The tubing shall be clear PVC and shall be
reinforced with open rnesh embedded nylon braid and shall have a working pressure
of 180 pounds per square inch (psi), at +70 +5 `F (21 +3 `C).
3.3.3 Pipe, tubing and pipe fittings. Metal pipe and tubings shall be of
copper or brass. Unless otherwise specified (see 6.2), pipe fittings shall be
of brass or bronze. All metal pipe and tubing shall withstand a hydrostatic
pressure of not less than 100 pounds per square inch gage (psig).
3.3.4
Rubber hose. The wastewater drain hose shall be nominal 3/4-inch ID by
l-inch OD length 10 feet +3 inches.
The drain hose and other hoses connecting
the water treating duct to the water meter shall conform to ZZ-H-601, grade 3,
class 2.
For the purpose of this requirement, recovered "
3.3.5 Recovered materials.
materials are those materials which have been collected from solid waste and
reprocessed to become a source of raw materials, as distinguished from virgin
raw materials. The components, pieces and parts incorporated in the unit may be
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