4. GENERAL REQUIREMENTS
4.1 General. The reliability qualification and acceptance tests are integral parts,of a reliability program such as MIL-STD-785, or MIL-STD-1543, and shall be planned and conducted in accordance with this standard., The required reliability testing.shall be done under environments’ conditions as specified in the test plan document and test procedures. Applicable reliability tests are described below.
4.1.1 First article (Preproduction) reliability qualification test. The purpose of this test is to demonstrate that the,equipment design will’meet specified performance and reliability requirements under specified environmental conditions. These tests shall be conducted on items which are representative of production configuration in order to provide documented test results as inputs to the production decision.
4.1.2 Production reliability acceptance tests (sampling).
These are a periodic series of tests conducted during the production run to ascertain whether equipment continues to meet specified performance and reliability requirements under specified environmental conditions. Unless otherwise specified in the contract, a production reliability acceptance,test will normally be performed on each lot produced beginning with the first lot delivered, after award of the production contract (see 5.5.l.2).
Replaced/Superseded by document(s)
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This standard covers the requirements for reliability qualification tests (production) and reliability acceptance tests (production) for equipment that experiences a distribution of tines-to-failure that is exponential. These requirements include test conditions, procedures, and various fixed length and sequential test plans with respective accept/reject criteria.
The application of this standard is intended to provide the procuring activity with decision information prior to award of a production contract, based on realistic test and evaluation of equipment performance and reliability, under specified environmental conditions. It is also intended that the standard provide guidelines for determining test conditions which shall apply to production reliability acceptance testing. These tests should be accomplished under one of the following locations and conditions, selected from the listed order of priority and authorized by the procuring activity.
a. Test in government commercial laboratory independent of the developing/producing contractor
b. Have prime contractor test subcontractors’ products under government surveillance
c. Allow contractor to conduct these tests in his own facilities, under strict government surveillance, where such an arrangement is shown to be in the best interests of the government