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Page Title:
Table VIII. Sampling tests sample selection |
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|  MIL-T-85378(AS)
4.5.3 Reliability assurance tests. Reliability assurance tests shall be
conducted in accordance with MIL-STD-781. Tests as required by both the
qualification phase and the production acceptance (sampling) phase shall be
conducted.
TABLE VIII.
Sampling tests sample selection
Quantity to be Selected
Quantity of Equipments
for Sampling Test
Offered for Acceptance
1
First 10
1
Next 50
1
Next 75
1 for each additional
Next 100
200 or fraction thereof
4.5.3.1 Qualification phase. Prior to the acceptance of test sets under
the contract or purchase order. a minimum of three test sets shall be tested
in accordance with MIL-STD-781; under the section entitled "Qualification
Phase of Production Reliability Tests". The maximum number of test sets to be
used shall be those listed in table V of MIL-STD-781. For the qualification
phase, Test Level E shall be used. The accept-reject criteria for Test Plan
IV shall be used.
4.5.3.2 Reliability sampling phase tests. Samples of the test set shall
be tested in accordance with MIL-STD-781 under the section entitled "Sampling
Phase of Production Reliability Tests". For the sampling phase, Test Level E
shall be used, except that the test set shall operate continuously. The
accept-reject criteria for Test Plan V shall be used to determine the length
of the tests (until an accept or reject decision is reached).
4.5.3.2.1 Lot size for sampling phase. The test sets constructed during
a two month period shall be defined as one lot. The accept-reject criteria
for Test Plan IV shall be used to determine the length of the tests in each
lot. Unless otherwise specified in the contract or purchase order, no
test sets shall be shipped until an accept decision is reached under each lot
(see 6.2.1).
4.5.3.3 Test details. The test details such as the length of the test
cycle, the length of the heat portion of the cycle, the performance
characteristics to be measured, special failure criteria, and preventive
maintenance to be allowed during the test, shall be part of the test
procedures to be made available and approved by the procuring activity prior
to the beginning of the qualification test phase of the reliability assurance
tests (see 6.2.2).
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