MIL-DTL-23659F
cooks off during 1 hour, the temperature shall be increased 25°F and the test repeated with four
new initiators. The test shall be repeated in 25° increments until cook-off of at least one initiator
occurs within a 1 hour period. If cook-off occurs in the first group tested, the temperature shall
be decreased 25°F and the test repeated with four new initiators. The test shall be repeated in
25° decrements until cook-off does not occur within a 1 hour period. The purpose of this test is
explained in the requirements in 3.5.6.
4.6.6.2. High temperature exposure. To determine if the initiators meet the requirements
of high temperature exposure of 3.5.7, 10 initiators shall be placed in an oven preheated to a
temperature 25°F less than the maximum determined for exposure without cook-off in 4.6.6.1.
The temperature shall be maintained for 12 hours. If no initiator cooks off, the 10 initiators shall
be cooled to 70°F and functionally tested. If any initiator cooks off, or fails to meet design
performance requirements after cooling, the test shall be repeated with additional groups of
initiators, decreasing the temperature in increments of 25°F until design performance
requirements are met.
4.6.7. Salt Fog Test. To determine if the initiators meet the requirements of 3.5.8, the salt
fog test shall be conducted according to Method 509.2 Procedure 1 of MIL-STD-810.
4.7. Functional Test. The initiators, and where practicable, their firing test devices, shall
be temperature conditioned and maintained at the required temperature for at least 1 hour after
the temperature of all parts has been stabilized; then the initiators shall be test fired. A simulated
test device and initiator with a temperature sensitive element shall be used as a grain temperature
monitor during temperature conditioning. Functions shall comply with the requirements of 3.6.
If the initiator cannot be test fired within the temperature chamber, the test devices shall be fired
within 5 minutes after removal from the chamber. Whenever it is necessary to repeat low (-
80°F) temperature conditioning of a cold device, all condensation shall be removed from the
device before it is returned to the temperature conditioning chamber.
5. PACKAGING.
5.1. Packaging. For acquisition purposes, the packaging requirements shall be as
specified in the contract or order (see 6.2). When actual packaging of materiel is to be
performed by DoD personnel, these personnel need to contact the responsible packaging activity
to ascertain requisite packaging requirements. Packaging requirements are maintained by the
Inventory Control Point's packaging activity within the Military Department or Defense Agency,
or within the Military Department's System Command. Packaging data retrieval is available
from the managing Military Department's or Defense Agency's automated packaging files, CD-
ROM products, or by contacting the responsible packaging activity.
6. NOTES.
(This section contains information of a general or explanatory nature that may be helpful, but is
not mandatory.)
6.1. Intended Use. This specification is intended to prescribe practices to be followed in
the design of electrical initiators and prescribes test procedures for the evaluation of the initiators
by subjecting them to simulated and accelerated environmental conditions and to functional tests
as necessary to insure satisfactory electrical and functional performance and reliability when
initiators are utilized or stored under the range of conditions encountered in service. The
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