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Page Title:
Table IX. Life test sample selection |
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|  MIL-T-85378(AS)
TABLE IX.
Life test sample selection
Quantity of Equipments
Quantity to be Selected
Offered for Acceptance
for Life Test
First 25
1
Next 175
1
Next 300
1 for each additional
500 or fraction thereof
4.6.1 Test conditions. The life test shall be conducted under the
standard conditions specified in 3.4.10.
4.6.2 Test periods. The test may be run continuously or intermittently.
Any period of operation shall be of sufficient duration to permit the
equipment temperature to stabilize. Periodically, the test set shall be
turned on and off several times and put through `its various phases of
operation.
4.6.3 Performance check. At approximately eight-hour intervals during
the test, a limited performance check shall be made. The performance check
proposed by the contractor shall be subject to authorization by the procuring
activity (see 6.2.2).
4.6.4 Test data. The contractor shall keep a daily record of the
performance of th e test set, making particular note of any deficiencies or
failures. In the event of part failures, the defective part shall be replaced
and the operation resumed for the balance of the test period. A record shall
be kept of all failures throughout the test (see 6.2.2). This record shall
indicate the following:
a.
Part type number
b.
The circuit reference symbol number
c. The part function
d. Name of the manufacturer
e.
Nature of the failure
f. The number of hours which the part operated prior to failure
4.6.4.1 Failure report. In the event of a failure, the government
inspector shall be notified immediately. A report shall be prepared and made
available to the procuring activity upon completion of the test (see 6.2.2).
In this report, the contractor shall propose suitable and adequate design or
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