MIL-STD-1901 Munition Rocket And Missile Motor Ignition System Design, Safety Criteria ForThis standard establishes the design safety criteria for munition ignition systems and associated ignition safety devices used to arm and fire munition propulsion systems.

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MIL-STD-1901A

5  DETAILED REQUIREMENTS

5.1  Application Guidance. The following detailed requirements shall apply to ignition system designs.

5.2  Pyrotechnic Trains and Firing Energy Trains

5.2.1  Pyrotechnic or explosive sensitivity (transfer charge and igniter pyrotechnics)

a.  Only pyrotechnic materials listed in Table 1 herein and those explosive materials listed in Table 2 are approved by all services for use in a position leading to the ignition of a rocket or missile motor without interruption.

b.  Approval by all services must be received by the Chairman, DOD Fuze Engineering Standardization Working Group (see 6.4) before a new material can be added to these tables or before a listed material can be deleted.  Approved pyrotechnic and explosive materials shall be qualified in the IS and certified by the associated safety board of 4.14 as acceptable for that IS.

c.  The material used in ISD's shall not be altered by any means (precipitation, recrystalization, grinding, density changes, addition of materials, etc.) likely to increase its sensitivity beyond that at which the material was qualified and at which it is customarily used, unless it is requalified.

d.  Subject to the associated service safety review authority, pyrotechnic materials which do not appear in Table 1 may be utilized physically in-line in the propulsion

system prior to ISD arming if:

(1)  The material has been qualified through actual testing to MIL-STD-1751 or OD44811 "Qualification Requirements for Booster Explosives" with the exception of the "Hot Wire Ignition Test," or

(2)  For material that does not meet the test requirements of MIL-STD-1751 or OD44811 above, the material shall demonstrate, in comparative tests, sensitivity values and stability and aging properties equal to or less than unmodified Boron Potassium Nitrate (BKNO3).  BKNO3  shall be tested alongside the proposed material to obtain the comparative values.

TABLE 1.  Approved Pyrotechnics

Pyrotechnic                                    Specification

BKNO3                                                               MIL-P-46994

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