MIL-DTL-10057J
4.5.3.2 Inspection for defects at cold temperature (minus 65 + 5° F) (See Table V).
4.5.3.2.1 First three lots. Beginning with the first lot produced and continuing until 3
consecutive lots have complied with the acceptance criteria, 80 simulators shall be selected from each
lot for test. All assemblies shall be functioned in the non-static phase. The lot shall be rejected if,
during the test, any of the following is exhibited.
a. One or more critical defects.
b. Four (4) or more assemblies having major defects listed in Table V.
c. Average of all delay times for the combined phases of 4.5.3.2.1 and 4.5.3.1.1 is less than
8.5 seconds.
4.5.3.2.2 Successive lot test. After three consecutive lots have complied with the criteria of
4.5.3.2.1, 50 simulators shall be selected from each lot for this test. All assemblies shall be functioned
in the non-static phase. The lot shall be rejected if, during the test, any of the following are exhibited.
a. One or more critical defects.
b. Three or more assemblies having major defects listed in Table V.
c. Average of all delay times for the combined phases of 4.5.3.1.2 and 4.5.3.2.2 is less than
8.5 seconds.
If the lot is rejected, the next lot produced will proceed as if it is the first lot being produced, and shall
follow the requirements of 4.5.3.1.1 and 4.5.3.2.1 until 3 consecutive lots are accepted.
4.6 Fuze length and delay.
4.6.1 Determination of critical fuze length. For each spool of fuze cord, a sample of 30 pieces
of fuze nominally three (3) inches shall be cut. Fuze cords shall be cut (10 each) from the beginning,
middle and end of the spool with respect to the lot size. Determine the average burn rate and
standard deviation. After average burn time and standard deviation is determined, critical fuze length
shall be set at an average minus standard deviation of four (4) sigma.
4.6.1.1 Inspection for critical fuze length. Cut fuzes shall be gaged and inspected 100% plus
verification level VII for compliance to the determined critical fuze length. Any fuze less than
critical fuze length shall be burned to determine the burn rate and if the burn rate is less than five (5)
seconds then critical defect and the lot shall be rejected. If the length of the fuze cord is less than the
determined critical length but not a short burn then it is a major defect.
4.7 Test methods and procedures.
4.7.1 Moisture content.
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