MIL-I-82877 Ignition Element, Pvu-15/BThis specification establishes the requirements for the PVU-15/B ignition element see 6.1.

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MIL-I-82877

4.5.1  Lot size.  The production lot size shall be as specified in the contract (see 6.2).  The minimum lot size shall be 51 units and the maximum lot size shall be 500 units.

4.5.2  Sampling.  Unless otherwise specified (see 6.2), sampling shall be in accordance with table III. The additional retained sample shall be for investigative purposes.

TABLE III.  Quality conformance sample size.

4.6  Methods of inspection.

4.6.1  Visual examination.  Each ignition element shall be visually examined for compliance to the requirements of 3.2, 3.3.2 and 3.6.

4.6.2  Resistance test.  The bridge circuit resistance test shall be performed on each ignition element by applying a current of no more than 50 milliamperes to the ignition element circuit.  A suitable

instrument known to be accurate within 4 X 10-4 ohms shall be used to determine if the ignition element

meets the requirement of 3.3.3.  Any ignition element not meeting resistance requirements shall be considered defective.  Defective ignition elements shall be discarded.

4.6.3  Radiographic examination.  All assembled ignition elements shall be radiographically examined in accordance with MIL-STD-453.  Any observable imperfections in components or assembly shall be cause for rejection.  The ignition elements shall be positioned for the most revealing exposure with the long axis of each assembly perpendicular to the rays of the X-ray machine.  All ignition elements shall be identified with serial numbers prior to examination.  The serial numbers shall be in consecutive order and each radiograph shall carry a permanent identification of the cartridges displayed thereon.  The radiograph identification shall include item nomenclature, the complete lot number assigned to that lot,

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