MIL-DTL-14970D
4.6.7.4 Test procedure. Twenty and only twenty
assemblies shall be tested using 3.5 decibang attenuators
(NAVORD Drawing 2426917 Pc. No. 41). The dents produced in
the witness blocks shall be measured in accordance with
paragraph 4.6.7.5.
4.6.7.5 Measurement of indentation depth. Depth of
indentation made in the block by the explosion of the donor
or acceptor as applicable, shall be measured with a dial
indicator accurate to 0.0001 inch or better. The point of
the dial indicator probe shall have an approximate 30 degree
included angle and the end of the point shall have a radius
of 0.025 + 0.002 inch. Before measuring the depth of
indentation in the block, remove any foreign material, such
as deposits, from the dent. Zero the indicator with the
point of the probe in the deepest part of the dent. Then
take the readings on the surface of the block at four points
near the periphery of the block. These points shall be
approximately 0.125 inch away from the periphery and 90
degrees apart. The dent shall be computed as the average of
the four readings.
4.6.7.6 Acceptance criteria. The explosive shall be
considered to have passed the density/sensitivity test if,
for the specified loading pressure, all densities fall
between 1.645 and 1.730 g/cc and the average does not exceed
1.723 g/cc. The explosive shall be considered to have
passed the sensitivity test, if there are no acceptor
explosions in the 20 trials. Any reaction causing a dent of
0.0020 inch or more shall be considered an explosion.
4.6.8 Workmanship. Visually examine the production of
Composition A-5 and all samples submitted for testing to
verify compliance with the requirements given in 3.5.
Adhesion of glued carton joints. The glued
4.6.9
carton shall be torn apart by lifting a corner of the glued
flap and tearing it from the side wall. Examine the manner
of separation of the joint and note the percentage of fiber
failure. (see 6.4.1.2.2).
5.
PACKAGING
5.1 Packaging. For acquisition purposes, the
packaging requirements shall be as specified in the contract
or order (see 6.2 and 6.4). When actual packaging of
materiel is to be performed by DOD personnel, these
personnel need to contact the responsible packaging activity
to ascertain requisite packaging requirements. Packaging
requirements are maintained by the Inventory Control Point's
packaging activity within the Military Department or Defense
22
For Parts Inquires submit RFQ to Parts Hangar, Inc.
© Copyright 2015 Integrated Publishing, Inc.
A Service Disabled Veteran Owned Small Business