MIL-I-60281A
4.2.3.2 Residual magnetism. Each initiator shall be subjected to the test for excessive residual magnetism as specified in 4.3.2. Failure of any initiator to comply with 3.4 shall be cause for rejection of the initiator.
4.2.3.3 Functional tests. The following tests shall be performed by the Government.
4.2.3.3.1 Ballistics. Twenty-one units shall be tested to determine compliance with 3.6. The units shall be temperature conditioned as provided in table II and 4.3.4.2. Failure of any unit to comply with 3.6 shall be cause for rejection of the lot.
TABLE II. Conditioning temperature.
4.2.3.3.2 Retest. There shall be no retests.
4.2.3.3.3 Test failure. If a test failure is attributable to an assignable cause, excluding the test initiator, the original test results shall be discarded and that test reconducted.
4.3 Test methods and procedures.
4.3.1 Breakawaytorque. Thetorquewrenchsetasspecifiedin3.3shallbeused inconjunction with a fixture to determine the adequacy of the joints. The chamber shall be secured in an air vise, and the torque shall be applied to the cap.
4.3.2 Residual magnetism. The assembly shall be tested for excessive residual magnetism using an approved compass in an area free of local magnetic effects by placing the assembly 5 inchesfromtheendatthesameheightasthecompass,inthenorth-southhorizontal position(cap endatsouth)withthecompasssetinaneast-westheading. Theassemblyshallbemovedata speed no greater than 10 feet per minute past the compass for its entire length, rotated 90 degrees in the horizontal position about its longitudinal axis, and moved slowly back past the compass. This
procedure shall be repeated for each 90 degree rotation of the assembly for four full passes.
4.3.3 Radiographic examination. Allassembled initiatorsshall beradiographically examined in accordance with MIL-STD-453, with the exception that an initiator assembly will be used for the penetrameter. Any observable imperfections in components or assembly shall be cause for rejection. The initiators shall be positioned for the most revealing exposure, with the long axis of each assembly perpendicular to the rays of the X-ray machine. All initiators shall be identified with serial numbers prior to X-ray examination. The serial numbers shall be in consecutiveorderbeginningwiththenumber001ineachproductionlot. Anymissingnumbersare to be identified on the X-rays. The initiators shall be arranged on trays or boards in consecutive
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