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|  MIL-S-63326(AR)
4.5.12 Temperature conditioning. After verification of the safe
condition of 4.5.15, the test items from 4.5.11.3 shall be subjected to
continuity resistance measurement of the circuits containing detonator(s),
micropiston actuator and common ground as per 4.5.10. The test items shall
then be temperature conditioned at the prescribed temperature for two (2)
hours min. (See 3.6).
4.5.13 Arming of S&A assemblies. The arming and functioning (see 4.5.14)
of the S&A assemblies shall be performed in an remotely operated, approved
fixture within two (2) minutes after removal from temperature conditioning and
consist of the following:
a. Initial arming will consist of locking the interlock pin, and
releasing the borerider.
b. Final arming shall consist of firing the micropiston actuator and
displacing the slider release pin.
4.5.13.1 Initial arming of S&A assembly. Initial arming of the S&A test
samples from 4.5.12 shall be accomplished by depressing the borerider with
sufficient force to shear the borerider shear pin, and while in this position
the
shall be functioned impacting the lock plate with sufficient force to
lock the interlock pin into position. The borerider shall then be released.
4.5.13.2 Final arming of the S&A assemblies. The micropiston actuator
circuit integrity of the sample S&A assemblies from 4.5.13.1 shall be verified
(see 4.5.10) prior to functioning. Final arming shall be accomplished by
subjecting the micropiston actuator to the energy from a 82 microfarad
capacitor charged to 5.0 + 0.1 volts.
4.5.14 In-line explosive functioning. The witness plates required for
this test should be installed prior to starting the arming sequence.
4.5.14.1 MDF explosive train functioning. The previously armed S&A
assemblies shall have the integrity of the detonator(s) circuits verified (see
4.5.10) prior to functioning. The detonators shall then be subjected to the
energy from a 82 microfarad capacitor charged to 5.0 0.1 volts. Observation
shall be made for compliance with the requirements of 3.6.1 and 3.6.2.
A witness plate 1 in X 1 in X 5/8 in thick minimum, as specified in
4.5.4.1 shall be used for this test.
4.5,14.2 Main charge lead explosive train functioning. The previously
armed S&A assemblies shall have the integrity of the detonator(s) circuits
verified (see 4.5.10) prior to functioning. The detonators shall then be
subjected to the energy from a 82 microfarad capacitor charged to 5.0 0.1
volts. Observation shall be made for compliance with the requirements with
3.6.2. A holding fixture or weight shall be used to contain movement of
witness block during functioning. The witness ring shall be 1 3/16 in I.D. X
1 1/2 in long X 3 in O.D., cold drawn or cold rolled steel, per ASTM-A-108,
C1018 or C1020, Rockwell B70-95 hardness".
74
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