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Calibration Procedure

Table of Contents - Click here for PDF demo - opens in new tab

1.0 Purpose
2.0 Theory
3.0 Definitions
4.0 General Calibration Procedure
5.0 Out-of-Tolerance Equipment and Tooling
6.0 Lost Equipment
7.0 Management Review
Appendix 1
Appendix 2

1.0    PURPOSE
This document defines the procedures necessary for calibration of measuring equipment.

2.0    THEORY
Measurement results are only valid when M&TE of known accuracy is used. This calibration procedure ensures M&TE is properly verified for accuracy against known standards. Measurement devices that are used to indicate process feedback are not subject to calibration, such as short-circuit or open-circuit, hot or cold, off or on, etc; however, when a measurement device is used to determine conformance to a Customer requirement, then the device should be properly verified for accuracy.

3.0    DEFINITIONS

  • Accuracy Ratio – ...
  • Adequacy - ...
  • Calibration: ...
  • Gages – ...
  • Inspection Aid – ...
  • M&TE - ...
  • Procurement of M&TE - ...
  • Recall – ...
  • Significantly out-of-tolerance - ...
  • Special Equipment - ...
  • Standards - ...

4.0    GENERAL CALIBRATION PROCEDURE
4.1    Calibration is performed by ...

4.2    Measuring instruments are to be calibrated at a temperature of ... and ... relative humidity. Sufficient temperature stabilization time is allowed before calibration. For cases where calibration must be conducted in the production area, ...

4.3    A number is issued when a gage does not provide its own serial number. ...

4.4    All M&TE are kept clean and when not in use are ...

4.5    A Recall Log is maintained on all M&TE and standards. The log provides ...

4.6    The number of items scheduled for monthly recertification is ...

4.7    In addition to the Recall Log, a Calibration Report is kept on each Company-owned gage/standard, which includes ...

4.8    Calibration intervals may be established based on one or more of the following criteria: ...

4.9    Adjustable M&TE is periodically recalibrated based upon ...

TABLE I, Calibration Intervals

Calibration Cycle Recalibration Cycles to Qualify
for New Calibration Cycle
New Calibration Cycle
Annual  ...  ...
Bi-Annual  ...  ...
3 - 4 Years  ...  ...
5 Years  ...  ...

 

 

 

 

 

4.10    Interval Adjustment:...

4.11    M&TE calibration intervals...

4.12    Overdue items...

4.13    A Calibration Sticker is used...

4.14    Calibration Standards/Special Equipment...

"Test report numbers issued by the NIST are intended to be used solely for...

An NIST test number is one means of substantiating comparison.

4.15    A Calibration Report  and Recall Log is maintained on...

4.16    The calibration department places all...

4.17    Traceability:...

4.18    Non-Calibrated M&TE:...

Non-calibrated measurement devices may be used to ... under the following conditions:

...

4.19    Calibration Not Required M&TE
4.19.1    Chemical laboratory glassware is...

4.19.2    Chemical analysis equipment that is checked for accuracy prior to use are...

4.19.3    Titration tools and solutions are...

4.19.4    Prepared chemical solutions and chemical standards are...

NIST traceability is not required for...

4.19.5    Software programs that are used for operation of test equipment are...

4.19.6    Power supplies that are used in process control and test equipment are...

4.20    Employee Owned Tools:...

4.21    Storage and Handling of M&TE:...

4.22    M&TE requiring transportation...

4.23    M&TE storage areas are...

4.24    Archive / Long-Term Storage:...

M&TE that has been calibrated and stored must...

The expiration date on the item's calibration tag or sticker may be...

Upon release of stored M&TE, the...

5.0    OUT-OF-TOLERANCE EQUIPMENT AND TOOLING
5.1    Calibrated M&TE that is found to be significantly out of tolerance, damaged, inoperative, erratic or exhibiting some other form of anomalous condition is...

5.2    M&TE found significantly out of tolerance at recalibration for 2 interval cycles is...

5.3    An instrument whose calibration error is significantly out-of-tolerance over a short portion of a specified range...

5.4    Any product certified with M&TE subsequently found to be out-of-tolerance is...

6.0    LOST EQUIPMENT
6.1    Measurement and test equipment that cannot be located is...

7.0    MANAGEMENT REVIEW
7.1    Management Review meetings are conducted according to the Management Process Procedure. During Management Review, process resources are...

APPENDIX 1

Setting and/or selecting a reference standard to calibrate a measurement device.

Requirement:
The measurement range of a device being checked for accuracy must be less than...

VOLTMETER:

A voltmeter shall be verified for accuracy within...

The voltmeter being checked for accuracy must be set to...

OTHER MEASUREMENT DEVICES:

Any reference standard whose maximum measurement range is the same as the device being checked for accuracy must be...

APPENDIX 2

Nonadjustable M&TE is inherently stable and includes...

The Operator is required to check inherently stable M&TE for...

To control the inventory of inherently stable M&TE, the Responsible Authority determines...

Operators are required to ONLY use inherently stable measurement devices from...

With this method...

8.0 REVISION HISTORY AND APPROVAL RECORD

Quality System Procedure
CALIBRATION PROCEDURE
Rev: Orig (EO #??)

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