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|  MIL-P-43155F(GL)
NATIONAL FIRE PROTECTION ASSOCIATION (NFPA)
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NFPA No. 70
National Electrical Code
(Application for copies should be addressed to the National Fire Protection
Association, 60 Batterymarch Park, Quincy, MA 02169.)
ASSOCIATION OF AMERICAN RAILROADS
Rules Governing Commodities in Closed or Open Top Cars
(Application for copies should be addressed to the Association of American
Railroads, 59 East Van Buren Street, Chicago, IL 60605,)
(Technical society and technical association documents are generally available
for reference from libraries. They are also distributed among technical groups
and using Federal agencies.)
.
2.3 Order of precedence. In the event of a conflict between the text of this
document and the references cited herein, the text of this document shall take
precedence.
REQUIREMENTS
3.
3.1 Alternate components. Components offered as equivalent to components
specified herein and on the referenced drawings as a specific manufacturer's
equal shall be functionally equal with the manufacturer's part number identi-
fied. The incorporation of such a component in the design of the specified end
product shall not require modification to any components, unless such
modification is specifically approved by the contracting officer. Prior to
commencing production, the contractor shall submit for the contracting officer's
approval, a list identifying each alternate component, together with proof that
each listed component complies with requirements specified herein. The
contracting officer, at his option, may require a physical sample of the
proposed substitution. Approval of the submitted listing, together with
necessary supporting data does not relieve the contractor of the responsibility
that these components perform in accordance with specified requirements when
incorporated into' the end product.
.
3.2 Materials and components. The materials and components shall be as
specified herein and on the applicable drawings. Materials and components not
definitely specified shall be of the quality normally used by the manufacture
provided the completed item complies with all the provisions of this document.
3.2.1 Aluminum. Aluminum alloy 6061-T6 shall conform to QQ-A-225/8 or
QQ-A-250/11, as applicable. Aluminum alloy 6063-T5 shall conform to QQ-A-200/9.
3.2.2 Steel, carbon. Carbon steel bar shall conform to ASTM
108.
Carbon
steel or strip shall conform to ASTM A 109 or A 569.
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