JOTP-011
5 December 2014
APPENDIX E. BREAKDOWN TEST AND CRITICAL ANALYSIS (BTCA)
E.2.4 TEST CONSISTENCY CONSIDERATIONS.
It is essential to ensure that the same test procedures used to determine the baseline properties of
materials are used during BTCA.
E.2.5 CONTAMINATION CONSIDERATIONS.
During disassembly and material extraction, care must be taken to ensure that the extracted
samples do not become contaminated (by structural materials or other matter) and/or physically
damaged/changed (e.g., compressed, cracked, abraded).
E.2.6 FUNCTIONAL TEST CONSIDERATIONS.
Small items such as igniters, initiators, squibs, etc. pose particular difficulties during disassembly,
and it may not be possible to extract sufficient material without damaging the material contained
within. In such cases it is acceptable to perform just visual and radiographic inspection followed
by functioning tests (at extremes of service temperature). This should include electrical resistance
checks and tests performed during lot acceptance such as performance tests during functioning. In
some cases it may be possible to extract sufficient material to perform small scale tests such as
volatile content determination or differential scanning calorimetry (DSC).
E.2.7 BTCA TEST REQUIREMENTS.
The aspects below are provided as an indication of the types of testing required.
E.2.7.1 Inspection and Disassembly.
a. Physical integrity and dimensional checks of the munition, sub-systems, energetic
materials, and structural materials. This can be achieved through visual inspection (including
photography as required), radiography, Computed Tomography (CT) Scan, Dye Penetrant, Bore-
scope (for rocket motor conduits), Ultrasonic inspection, and/or Fluoroscopy both prior to, and
following disassembly. Some techniques may be more applicable to structural materials which
must also be assessed. Dimensional checks should assess physical dimensions and mass of the
complete munition, sub-systems and energetic materials to demonstrate compliance with
specifications/drawings.
b. During disassembly, pay particular attention to signs of cracking, surface
crystallization/dusting (e.g., Ammonium Perchlorate in rocket motors and Nitramines in
warheads), debonding/delamination (e.g., thermal liners and inhibitors for rocket motors),
exudation (e.g., energetic and inert plasticizers in rocket motors), corrosion, discoloration, wear,
missing components and other damage.
E-2
For Parts Inquires call Parts Hangar, Inc (727) 493-0744
© Copyright 2015 Integrated Publishing, Inc.
A Service Disabled Veteran Owned Small Business