MIL-STD-1660A APPENDIX H
H.1 SCOPE
TESTING OF AMMUNITION LOADS UNITIZED TO PROTECTION LEVEL C
H.1.1 Scope. The following test procedures and criteria contained herein are applicable to unit loads of ammunition components/hazardous materials packaged for Level C protection. The component packages and pallet should have already passed acceptance tests to prove their structural and climatic reliability. This Appendix is a mandatory part of the standard. The information contained herein is intended for compliance.
NOTE: Level C (minimum) packing protection is defined in section 4.11.3. H.2 REQUIREMENTS
H.2.1 General. These test procedures and criteria do not establish the adequacy of the packaging of the individual items, but the ability of the unit load and its strapping or bonding means to withstand the stresses, shocks, and impacts likely to be incurred during temporary storage, limited transport, and typical handling.
H.2.2 Alternate tests. The test methods contained herein are recommended for use; however, other test methods may be substituted provided they will impart the same or a greater degree of structural stress, shock forces, and impact pulse times.
H.3 SPECIMEN
H.3.1 Test specimen. For safety purposes during testing, explosive loaded ammunition components should be replaced by inert items having similar physical characteristics. A test specimen shall simulate an entire unit load and shall be subjected to all tests in the sequence as presented herein, i.e., stacking, vibration, drop, mechanical handling, and disassembly tests. Failure of the test specimen to complete any one or more of the tests shall prove unacceptability of the load. Criteria, as presented herein, shall be utilized for determining failure.
H.4 CONDITIONING OF SPECIMEN
H.4.1 Conditions. Tests should normally be conducted at an ambient temperature of 25±10 °C (77±18 °F). If the materials used in the fabrication of the unit load are sensitive to temperature or humidity, the tests should be conducted in the conditions which occur in the appropriate logistics environment, e.g., conditions prevailing at unsheltered loading and receiving docks.
H.5 PROCEDURES H.5.1 Stacking test. a. Purpose.
(1) To examine the ability of the unit load to resist the forces that may occur during temporary storage
due to stacking.
(2) To ensure that a safe, stable, and supportive stacking condition will exist. b. Procedure.
(1) The test specimen shall be loaded to simulate an actual stack of identical unit loads as high as expected to occur during storage.
(2) The stacking condition will be maintained for a period of 24 hours minimum after which time observations shall be made and recorded.
(3) The typical stacking height for storage of ammunition unit loads for Level C is assumed to be two unit loads high. If the unit load is to be designed for stacking more than two units high, the durability and stability of the packaging, the dimensions and weight of the unit load, and the anticipated storage environment should be
considered. If the stability of stacking more than two unit loads is questionable based on the previously mentioned considerations, it is recommended that an actual stack of unit loads be either observed for a period of 18 months or subjected to appropriate accelerated life cycle tests prior to approval of stacking more than two unit loads high.
Source: https://assist.dla.mil -- 4D1ownloaded: 2014-09-28T13:04Z Check the source to verify that this is the current version before use.
For Parts Inquires submit RFQ to Parts Hangar, Inc.
© Copyright 2015 Integrated Publishing, Inc.
A Service Disabled Veteran Owned Small Business