Downloaded from https://www.everyspec.com MI.L-STD-81OD 19 Ju1’y1983 d. No material other than water shall be brought into physical contact with the test item(s) that will cause the test item(s) to deteriorate or that will affect the test results. No rust or corrosive contaminants or any material “otherthan water shall be introduced into the’chamber test volume.- ... , ,. .-. e. Dehumidification, humidification, heating, and cooling of the air enveloDe surrounding the test item shall be achieved by methods that ‘donot change-the chemical‘compoeition of the air, water, or water volume of air. vapor within that II-1.2 Qn@?h a. k! ~. Unless otherwiseepecified in ,.
the requirements documents, temperature and relative humidity measurements made during the teat shall be “centinuoua if measurementa are in analog form, or at.intervals of 15. minutes or lees if measurements are in digital form. . - b. All instrtimentationused with the selected test chamber shall be capable of meeting the accuracies, tolerances, etc., of‘General Requirements, 4.4.1 and4.4.2. . II-1.3 Mt interrti (See General Requirements,‘4.5.4. ) . a. Il@2rtest ~. An undertest interruption may.be best handled by keeping the chamber closed”in an effort to maintain tolerances.
long aa the tolerances are maintained, testing may be resumed by reestablishing the prescribed conditions and continuing from the point of the interruption. If an unscheduled interruption occurs that“causes the test’conditions.to exceed - the allowable tolerance toward staridardambient temperatures, the test mtistbe reinitiated at the end of the laat successfully oompleted cycle. Any test item failure that occurs shall be treated as a failure: . . b. Overtest interruotioua.
An interruption that results in exposure of the test item to conditions more extreme than required by the requirements documents should be followed by a complete physical examination and operational check of the test item (where possible) before any continuation of testing. This is especially true where a safety problem could exist, such as with munitions. If a problem is discovered, the preferable course of action”is to terminate the test and reinitiate testing with a new test item.. If this is not done and test item failure occurs during the remainder of the teat, the test results may be considered invalid. If no problem has been encountered; .
reestablish preinterruption conditions and continue from the poi’nt”where the test tolerances were exceeded. ,, ,. ., !, .s1-2 ~ . 11-2.1 ~. Before initiating any testing:’ ,. . a.””Determine from the test-plan which test procedures are.required. b. Determine from the test plan the temperature-humidity operation and etorage requirements and corresponding temperature-humidity cycle(s) from table 507.2-I. METHOD 507.2 19.JUIYI1983”; 507.2-14’