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|  MIL-M-70778 (AR)
4.5.5.3 Cold conditioning. The acceptor lead assemblies to
be conditioned and functioned at cold temperature shall be
prepared as specified in 4.5.5.1. They shall then be placed in a
suitable chamber and the temperature decreased to -25 5F.
The rate of decrease shall not exceed 18F per minute. The
assemblies shall be conditioned at temperature for two (2) hours
minimum. The assemblies shall then be removed from the chamber
and functioned as specified in 4.5.5.4. Set-up time between
removal from the chamber and firing shall be five (5) minutes
maximum.
4.5.5.4 Functioning. Each assembly prepared as specified in
4.5.5.1 and after applicable temperature conditioning shall have a
transfer lead assembly and lead CUP assembly assembled "to the
output side of the acceptor lead using the S&A assembly as per
936668. The detonator shall be functioned behind an approved
barricade. The detonator short shall be removed and the detonator
shall be initiated by a suitable power source (e.g. 6 volt
battery) . If the acceptor lead assembly fails to initiate the
transfer lead assembly (in the slider assembly) or fails to cause
high order detonation of the lead cup assembly as specified in 3.4
as evidenced by a witness mark on the witness plate the acceptor
lead assembly shall be classed defective. Any assembly in which
the detonator fails to fire shall be classed as a "no test" and a
replacement S&A assembly as specified in 4.5.5.1 shall be used in
its place.
4.5.6 Waterproofness test. The acceptor lead assemblies
shall be immersed in water at a depth of 2 inches minimum from the
surface of the water to the top of the assemblies. The water
temperature shall be maintained at 70 10F. After a
minimum of 40 hours, the assemblies shall be removed from the
water and subjected to the output test specified in 4.5.4. The
functioning test of all samples shall be completed within four
hours after the assemblies are removed from the water.
WARNING: The above tests -are conducted on assemblies containing
an explosive component. Test barricades (where used), procedures
and equipment shall have prior approval of the contractor's safety
officer .
PACKAGING
5.
5.1 Preservation and packaging.
5.1.1 Level C. The acceptor lead assembly shall be preserved
and packaged in accordance with Dwg. 7548104.
5.2 Packing.
5.2.1 Level C. The acceptor lead assembly, preserved and
packaged as specified in 5.1.1, shall be packed in accordance with
Dwgs . 7548103.
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