Downloaded from https://www.everyspec.com MIL-STD-810D 19 July 1983 c. included Based on Selec mn of the test DPOc@iwa.@. ~. Three test procedures are within this methDd: storage, operation, and rapid decompression. the test data requirements, determine which of the test procedures or combination of procedures is applicable. .(1) Prmedu= I - storage. Procedure I is appropriate if the test , item is to be stored at high ground elevation or tranSpDrtated in its shipping/storage configuration. (2) Procedure II - ODera~. Procedure II is used to determine the performance of the test item under low-pressure conditions and can be preceded by prDcedure 1, procedure III, or both.
If there are no low-pressure storage or explosive decompression,requirements, this prooedure can stand alone, (3) Procedure III d decomm~. Procedure III is used to determine if a rapid decrease in pressure of the surrounding environment will cause a teat item reaction that would endanger nearby personnel or the aircraft in which it ia being transported. After the rapid decompression test, a potential safety problem could exist that is not obvious. Caution should be exercised during the post-test operational check. This procedure can be preceded by either the storage or the Operational test. I-3.2 moics of rslatsd test cond-.
After the test procedure(a) is chosen, the test altitude(s), altitude change (climb/descent)rate, duration of exposure, test item cmfiguration , and any additional appropriate guidelines must be determined. a. T-t al Ihuk. t. Base determination of the specific teet altitudes on the anticipated deployment or flight profile of the test item. If this information is not available, use the following guidance to determine the test altitude: (1) World mound areas. The highest elevation currently contemplated for ground military operations (equipment operating and nonoperating) is 4 ,570m (15,000 ft), 57 kpa (8.3 psia) (reference a). (2) .
Table 500.2-I provides the minimum cargo compartment pressures for variousaircraft used to transport cargo. These pressures can occur as a result of failure of the automatic pressurization system. Redqndant systems prevent rapid loss of pressure unless explosive decompression occurs. Testing to the 4,570m (15,000 ft) equivalent altitude will assure that the equipment shipped by air will successfully withstand the low-pressure environment. METHOD 500.2 500.2-3 19 July 1983 I