MIL-DTL-23659F
APPENDIX A
A.4.8. Temperature-Shock/Humidity. The initiator shall be capable of withstanding
temperature-shock/humidity without damage or performance degradation.
A.4.9 Leakage.
A.4.9.1. Hermetically Sealed ILI. An hermetically sealed ILI shall not exhibit a leak rate in
excess of 1 X 10-6 cc per second of air at a pressure differential of at least 1.0 atmosphere.
A.4.9.2. Non-Hermetically Sealed ILI. A non-hermetically sealed ILI shall meet the Safety
Authority's sealing requirements.
A.4.10. Electrical Cook-Off. The reaction of the bare ILI to exposure to common AC and
DC voltage sources up to 500 volts shall be determined. Test circuitry for the AC test shall be in
accordance with paragraph A.5.2. An EFI to be used in a warhead application will not be
considered for certification in non-interrupted explosive train use if the reaction to the electrical
cook-off test is a detonation. If the ILI is intended for use as a stand alone configuration item, or
an application in which the leads of the ILI may be externally exposed or accessible, the initiator
shall not exhibit a functional explosive reaction (deflagration, explosion, or detonation) during
this test. A DILI will not be considered for certification for non-interrupted use in a safety
critical application if the initiator deflagrates, explodes, or detonates during the electrical cook-
off test. Should the DILI case deform, rupture, or vent during the electrical cook-off test,
additional tests shall be required, as acceptable to the Safety Authority, to conclusively
demonstrate that this reaction can not propagate to any energetic component in the pyrotechnic
train.
A.4.11. Maximum Allowable Electrical Sensitivity. The electrical sensitivity of the initiator
shall be determined by statistical tests for a sample of no fewer than 30 ILI. The appropriate
safety authority shall approve the test procedures and the associated statistical analysis methods
used. The firing circuitry used for this test shall be in accordance with paragraph A.5.3.
Statistical analysis of the electrical sensitivity data shall be used to predict the Standard No-Fire
Voltage (SNFV). The SNFV is defined as projected voltage at which the initiator has a 0.001
probability to fire with 95 percent single sided lower confidence level. In addition to reporting
the SNFV, all raw data recorded for the sensitivity test shall be reported along with the mean
firing voltage and the associated standard deviation. The ILI SNFV shall be greater than 500
volts.
A.4.12. 1.5 Meter Drops. The initiator shall be safe and operable when dropped from a
height of 1.5 meters.
A.4.13. Electrostatic Discharge. The ILI or shall not function or dud when subjected to
simulated human body electrostatic discharge.
A.4.14. Vibration. The ILI shall be capable of withstanding vibration without damage or
performance degradation.
A.4.15. Shock. The ILI shall be capable of withstanding mechanical shock without damage
or performance degradation.
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