MIL-PRF-62546C
ASTM INTERNATIONAL
ASTM G21
-
Determining Resistance of Synthetic Polymeric Materials to
Fungi, Standard Practice for
(Copies of these documents are available from www.astm.org or ASTM International,
P.O. Box C700, West Conshohocken, PA 19428-2959.)
2.4 Order of precedence. Unless otherwise noted herein or in the contract, in the event
of a conflict between the text of this document and the references cited herein, the text of this
document takes precedence. Nothing in this document, however, supersedes applicable laws and
regulations unless a specific exemption has been obtained.
3. REQUIREMENTS
3.1 First article. When specified (see 6.2 and 6.3), a sample shall be subjected to first
article inspection in accordance with 4.1.1.
3.2 Design, materials, and manufacturing processes. Unless otherwise specified
(see 6.2), the design, materials, and manufacturing process selection is the prerogative of the
contractor as long as all items fully meet the operating, interface, ownership and support, and
operating environment requirements specified.
3.2.1 Recycled, recovered, or environmentally preferable materials. Recycled,
recovered, or environmentally preferable materials shall be used to the maximum extent possible
provided that the material meets or exceeds the operational and maintenance requirements, and
promotes economically advantageous life cycle costs.
3.3 Operating requirements. The OFSA shall be designed to function in a military
vehicle automatic fire extinguishing system. The OFSA shall optically detect and signal the
presence of a hydrocarbon fire. The OFSA shall provide signals in response to the built-in-test-
equipment (BITE), indicating its functional condition. Each OFSA shall provide the following
functional, operational, and performance capabilities.
3.3.1 BITE. The OFSA shall conduct a total electronic check (see 3.3.3.1.3) when it
receives a BITE activation signal on pin E (see table III). Each OFSA shall generate optical
stimuli causing the OFSA to generate both a small fire and a large fire signal. The stimuli source
may be external to the OFSA protective window(s). A check for dirty sensor windows shall be
included (see 4.3.3.1).
3.3.2 Voltage characteristics. The OFSA shall conform to appendix A without loss of
effectiveness and without causing damage or malfunction to interfacing components. The OFSA
shall not false alarm before, during, or after testing (see 4.3.3.1 and 6.6.3).
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