Downloaded from https://www.everyspec.com I MIL-STD-81OD 19 July 1983 Step 8. Conduot a complete visual examination of the test item. Step 9. Document the results. Step 10. Conduct an operational checkout as in II-2.2, step 6. Step 11. Document the results. I Step 12. Compare these data with the pretest data. I II-3.3 Step 1. With the test item in the test chamber, adjust the chamber air temperature to the low oDerating temperature of the test item, aa determined from the test plan. Maintain f;r 2 hours following temperature stabilization > of the test item (to assure stabilization). Step 2.
While maintaining the low operating temperature, place the teet in its normal operating configuration by using the options of “step4. item Step 3. Reestablish the temperature to that used in step 1; above. Step Q. Baaed on the type of test chamber available, select one of the two following options: a. Option 1 - To be used when a ‘walk-in” type chamber is available: With personnel clothed and equipped as they would be in a low-temperature o tactical situation, disassemble the test item as would be done in the field, and repack it in ita normal shipping/storage container(s), transit case~ or other mode and configuration. b. Option 2 - To be used when small o,hambere(non-walk-in)are used:
Perform the option 1 procedure, except that the disassembly and packing will be performed by personnel reaching through chamber access holes or the open door while they are wearing heavy gloves such as would be required in the,natural environment. NOTE - Opening of the chamber door may cause frost to form oh the test item in addition to a gradual warming of the test item. Manipulation neaessary to perform the required setup or teardown ehould be’limited to 15-minute intervals, between which the temperature of step 1 above should be reestablished. Step 5. If operation of the test item is requir6d at low temperatures, = repeat step 2, above, and then proceed to step 1 of II-3.2.
If not, proceed to step 6 of this procedure. Step 6. Conduct a complete visual examination of the test item. * Step 7. Document the results for comparison with the pretest data. Step 8. Adjust the chamber air temperature to standard ambient and maintain until temperature stabilization of the test item has been achieved. o METHOD 502.2 19 July 1983 502.2-12