Material deterioration and control.

Page Title: Material deterioration and control.
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in section 4; and, unless otherwise specified herein, all examinations and tests

shall be conducted by the contractor subject to surveillance and approval by the

Government (see 6.3). When specified (see 6.2), the Government will conduct any

or all of the first article examination and tests, as specified (see 6.2).

3.3 Production melters. All melters furnished under this specification shall

be physically and mechanically - identical to the first article melters approved

by the Government (see 6.3).

3.4 Material. Material shall be as specified hetein. Material not specified

shall b-cd by the contractor and shall be subject to all provisions of

this specification (see 6.6).

3. 4.1 Material deterioration and control. The melter shall be fabricated

from compatible materials, inherently corrosion and deterioration resistant or

treated to provide protection against the various forms of corrosion and

deterioration that may be encountered in any of the applicable operation and

storage environments to which the item may be exposed.

3.4.2 Dissimilar metals. Dissimilar metals shall not be used in intimate

contact with each other unless protected against galvanic corrosion. Dissimilar

metals and methods of protection are defined and detailed in MIL-STD-889.

3.4.3 Identification of materials and finishes. The contractor shall ident

ify the specific material , material finish or treatment for use with components

and sub-components, and shall make information available upon request to the

contracting officer or his designated representative.

3.4.4 Structural steel.

Structural steel shall conform to ASTM A36.

3.4.5 Sheet steel. Sheet steel shall conform to ASTM A659, UNSG10150, G10200

or G10230, condition and finish to suit the application. All sheet steel gages

specified herein shall be United States Standard Gage.

3.4.6 Insulation. Insulation shall be fibrous glass conforming to ASTM C553,

type I, class B-4, except the fiber diameter shall not exceed 0.00038 inch.

3.4.7 Pipe. Pipe shall conform to ASTM A53 (API 5LA), type S, grade A or B

as applicable, ASTM A53 (API 5LA), type E, grade A or B as applicable, or ASW

A135, grade A or B as applicable.

3.4.8 Retaining chain. Retaining chain shall conform to RR-C-271, type II,

class 6, 16-1/2 links per foot.

3.4.9 Gaskets and seals. Gaskets or seals, when used, shall be oilproof and

rated for operation at 600" F.

Quick-disconnect couplings specified

3.4.10 Quick-disconnect couplings.

herein shall conform to MS39153.

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