SPECIFICATION FOR CALIBRATION OF MEASUREMENT AND TEST EQUIPMENT
TABLE OF CONTENTS
1.0Scope
2.0General Procedure
2.1Calibration Masters
2.2Calibration Standards
2.3Calibration Prior To Use
Exhibit 1Calibration Record
Exhibit 2Calibration Sticker
1.0SCOPE
This specification covers the requirements for the calibration of measuring and test equipment at specified intervals in accordance with the applicable standards. Q.C. personnel are responsible for maintaining calibration records for the tools and gauges used for final inspection and acceptance. It is the responsibility of each inspector to make sure that the measuring and test equipment is checked for accuracy prior to use.
2.0general PROCEDURE
2.1Calibration Masters
2.1.1All measuring equipment requiring calibration will be calibrated with traceability to nationally recognize standards where such standards exist. If such standards do not exist, calibration shall be in accordance with manufacturer’s recommended methods and the standards shall be documented.
2.2Calibration Standards
2.2.1All inspection measuring equipment is controlled and maintained by Quality Control personnel. All inspection tools are identified with a serial number and each tool has an individual calibration record (Exhibit 1.).
2.2.2Calibration frequencies are based on the manufacturer’s recommendation modified as experience and tool usage dictates by the MQA.
2.2.3Each measuring device will be identified with a calibration sticker (Exhibit 2). The sticker will contain the date of calibration, the date the next calibration is due and the inspector that performed the calibration. The serial number traces the device to its calibration record.
2.2.4The calibration record will identify the master equipment used in calibrating the tool or equipment, and the inspector will be responsible to record actual measurements, any repairs, adjustments, etc. on the record.
2.2.5Master Pressure Gauges are calibrated annually to NIST standards by an outside subcontractor, or any time error is suspected. All working test gauges are checked for accuracy every six (6) months unless the accuracy of the gauge is in question. Each gauge is serialized with visible calibration stickers. The serial number traces each gauge to a calibration log. The spacing between gradations on the pressure gauge shall be such that the AI and the operator controlling the test can determine when the required test pressure has been applied..
2.2.6Personal M&TE is not permitted for final acceptance measurements of items or materials.
2.2.7M&TE found to be out of tolerance shall be identified as a nonconforming condition and the acceptability of any items tested since the last valid calibration shall be re-evaluated.
2.2.8Rulers, tape measures, levels and such other devices are not in the calibration system. It is of PSI opinion that normal commercial instruments will provide adequate accuracy. Welding machines are also not in a calibration or verification system. The basis used is ASME Code Interpretation 111-1-77-166.
2.3Calibration Prior To Use
2.3.1Certain equipment such as the helium mass spectrometer will be calibrated prior to use. This calibration will be recorded on the test report as part of the test.
V049-2-126