MIL-DTL-81530B(OS)
4. QUALITY ASSURANCE PROVISIONS
4.1 Classification of inspections. The inspection requirements specified herein are classified as follows:
a. First article inspection (see 4.3)
b. Conformance inspection (see 4.4).
4.2 Sampling. Unless otherwise specified, and when applicable, the sampling plans and procedures
used in the determination of the acceptability of products submitted by a supplier shall be in accordance
with the provisions of ANSI/ASQC Z1.4. Unless otherwise specified in the contract, order, or requisition,
all samples for test purposes shall be provided at the expense of the contractor.
4.2.1 Inspection lots. Inspection lot definition, formation, and size shall be in accordance with
ANSI/ASQC Z1.4.
4.2.2 Production lots. The suggested production lot size is 1201 minimum and 3200 maximum.
Ignition elements required for all test purposes are selected from the production lot and will not be
applied as a part of the quantity specified for delivery by the contract. Only primary components from a
single batch shall be used in a production lot of ignition elements. One primary component batch may be
used in more than one ignition element production lot. Ignition elements selected for the functional test
shall be delivered to the activity designated by the contracting agency.
4.3 First article inspection. Before entering into quantity production, an acceptable first article sample
of 146 ignition elements shall be prepared. One hundred thirty-six of these ignition elements shall be
expended in the tests listed below and 10 shall be retained for investigative purposes. A first article
sample acceptable for environmental and functional testing shall be defined as a sample which has met
the requirements of paragraphs 3.3 through 3.10 of this specification. The contractor shall deliver the
ignition elements to the activity designated by the contracting agency for test. First article sample
acceptance shall consist of the following tests as prescribed in table III of MIL-I-23659: vibration (12),
40-foot drop (6), temperature and humidity cycling (18), +70bF (50). No firing shall produce results
outside the limits set forth in 3.11.2. In addition, 25 ignition elements shall be subjected to and meet the
no-fire requirements of 3.11.1.1; also 25 ignition elements shall be subjected to and meet the all-fire
requirements of 3.11.1.2. Failure of any ignition elements to meet the no-fire or all-fire requirements
shall cause rejection of the first article lot represented. All ignition elements shall be fired in the test
fixture, DL 613457. Any quantity production prior to notification by the contracting agency of first
article sample acceptability shall be at the contractor's risk. The first article ignition elements will not be
applied as a part of the quantity specified for delivery by the contract.
4.4 Conformance inspection. Production and acceptance inspection shall consist of verification of the
characteristics classified on the drawings of DL 546659, and the tests and examinations of table I.
4.5 Classification of characteristics. The characteristics verified by the tests and examinations herein
are classified as Critical, Major, or Minor in accordance with DOD-STD-2101. Tests and examinations
that verify critical characteristics are identified by the symbol (C), and the major characteristic, by the
symbol (M). The number following the classification symbol indicates the serial number of test or
examination. Tests and examinations which are not annotated with a classification code are classified
minor.
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