MIL-STD-981C
5.6.1 Product assurance program. A product assurance program shall be established by the contractor to meet the requirements of appendix A. The contractor shall obtain procuring activity approval of the product assurance program in accordance with appendix A. Approval shall include a product and quality audit by the procuring activity or their designated representative. This audit will cover verification of the implementation of the product assurance program, conformance of design standard and manufacturing techniques of the requirements of this document and test and inspection capabilities.
5.6.1.1 Documentation. Documents shall be maintained, in accordance with appendix A, which specify materials, calibration techniques, processing, test and measurements controls and procedures. These documents shall cover all process steps to be controlled. The documentation shall be available to the operating personnel at all times. It shall be made available to the procuring agency for the purpose of verifying its existence, coverage, implementation and adequacy.
5.6.1.1.1 Lot control.
5.6.1.1.1.1 Class B. A lot control shall be used for each lot. The lot control shall include as a minimum: lot identification, operation, quantity, date of operation, and operator identification.
5.6.1.1.1.2 Class S. Lot control for class S devices shall be required for each part design. As a minimum requirement, the lot control shall constrain the inspection lot to consist of a single part number representing one design and processed as a single lot through all manufacturing steps on the same equipment to the same product assurance program and procurement document and identified with the same date and lot code designation. In addition, the lot shall conform to the following:
a. Each element, such as cores, magnet wire, finished cases, wire lugs and terminals, potting or molding compound used in he manufacture of the part shall be from a single lot and traceable to the lot.
b. Solder for each application shall be of a uniform composition and traceable to the source. c. In general, all single process operations shall not be changed during processing of the lot. d. A lot identifying number shall be assigned at the time the lot is assembled. This unique lot
identifying number shall be maintained through acceptance and shall be traceable to the
production lot and to the lot date code.
e. The manufacturer shall maintain traceability and test records for a minimum of 10 years on each lot date code. The manufacturer shall record when in-process controls and quality conformance inspections start and when they have been completed. The manufacturer shall notify the acquiring activity 30 days minimum prior to the destruction of records.
f. All requirements specified in 5.6.1.1.1.1.
5.6.1.1.2 Process control charts. Process control charts shall be maintained during manufacture. The charts shall contain information such as: process step, lot no. and/or date, action limits and absolute limits and range. Where absolute limits are exceeded, the manufacturer shall document the corrective action taken.
5.6.2 Incoming inspection. Methods and procedures which are used to control inspection, storage, and handling of incoming materials shall be documented. Records shall be provided which verify that materials used in production meet the requirements of the manufacturer's specifications and of the general and detail specifications. As a minimum the following items will be covered.
5.6.2.1 Magnet wire. Magnet wire used in the design and construction of parts specified in accordance with this standard shall meet the following requirements:
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