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MIL-DTL-23659 Initiators, Electric, General Design Specification ForThis specification furnishes general requirements for design and establishes uniform methods for testing electric initiators and electric initiator subassemblies. The purpose of the testing program is to determine the electric characteristics, soundness of mechanical design, output, and resistance to deleterious service environments. For purposes of this specification the term electric initiator includes items classified in FSC 1377 such as hot wire initiators, exploding bridgewire initiators, exploding foil initiators, conductive mix initiators, etc. Electric primers are not covered in this specification. All requirements for in-line initiators used in safety sensitive, non-interrupted energetic materials train applications are contained in Appendix A. Requirements for all other initiators are in the main body of this document.

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MIL-DTL-23659F
APPENDIX A
TABLE A-1. IN-LINE INITIATOR CERTIFICATION TEST MATRIX
30 30 30 30
5
10 30 30 50 50 50 50 50 50
5
REQUIREMENT
TEST
500
ABCD
E
FGHI
JKLMN
O
A.4.2
VISUAL INSPECTION
A.6.1.1  X  X  X  X
X
XXXXXXXXX
X
500
RADIOGRAPHIC
A.6.1.2  X  X  X  X  X  X  X  X  X  X  X  X
X
X
X
500
A.4.3
EXAMINATION
A.4.4  BRIDGEWIRE RESISTANCE A.6.1.3  X  X  X  X  X  X  X  X  X  X  X  X
X
X
X
500
A.4.9  LEAKAGE
A.6.6
XXXXXXXXXXXX
X
X
X
500
FIRING PROPERTIES,
A.4.5
A.6.2
X
30
AMBIENT
A.4.5  FIRING PROPERTIES, COLD A.6.2
X
30
A.4.5  FIRING PROPERTIES, HOT  A.6.2
X
30
MAXIMUM NO DAMAGE
A.4.6
A.6.3
X
30
CURRENT
A.4.7  THERMAL COOK-OFF
A.6.4
X
5
A.4.10 ELECTRICAL COOK-OFF*
A.6.7
X
10*
MAXIMUM ALLOWABLE
A.4.11
A.6.8
X
30
ELECTRICAL SENSITIVITY
A.4.12 1.5 METER DROPS
A.6.9
XXXX
180
ELECTROSTATIC
A.4.13
A.6.10
X
50
DISCHARGE
TEMPERATURE
A.4.8
A.6.5
XXXX
180
SHOCK/HUMIDITY
A.4.14 VIBRATION
A.6.11
XXXX
180
A.4.15 SHOCK
A.6.12
XXXX
180
A.4.2  VISUAL INSPECTION
A.6.1.1
XXXX
180
RADIOGRAPHIC
A.4.3
A.6.1.2
XXXX
180
EXAMINATION
BRIDGE CIRCUIT
A.4.4
A.6.1.3
XXXX
180
RESISTANCE
A.4.9  LEAKAGE
A.6.6
XXXX
180
ALL FIRE PERFORMANCE
A.4.16
A.6.13
X
X
100
AMBIENT
ALL FIRE PERFORMANCE
A.6.13
X
X
100
A.4.16
COLD
ALL FIRE PERFORMANCE
A.4.16
A.6.13
X
X
100
HOT
FIRING PROPERTIES,
A.4.5
A.6.2
X
30
AMBIENT
A.4.17 HIGH FIRING VOLTAGE
A.6.14
X
5
POST TEST SEAL
A.4.18
A.6.15
XXX
150
INTEGRITY **
* Additional system level testing may be required
** Post Test Seal Integrity testing is required only for ILI that must maintain a presure seal following initiation
A.4.1.3. Design Rejection and Retest Criteria. Failure of any initiator to conform to the
requirements of this specification shall be cause for rejection of the design. Before the tests are
repeated, full particulars concerning the failure(s) and action taken to correct the defects shall be
submitted for approval to the appropriate safety authority.
A.4.2. Visual Inspection. The ILI shall be visually examined and meet the manufacturer's
incoming visual inspection criteria. Visual inspection following the environmental testing shall
detail any damage found. Failure to meet the manufacturer's incoming inspection criteria shall
not necessarily be cause for failure or rejection of the ILI following environmental testing.
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