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Regional Basic Professional Training Course in Korea

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<strong>Regional</strong> <strong>Basic</strong> <strong>Professional</strong> <strong>Tra<strong>in</strong><strong>in</strong>g</strong> <strong>Course</strong> (BPTC) on Nuclear Safety<br />

specific test purpose.<br />

Uncerta<strong>in</strong>ty: when judg<strong>in</strong>g safety marg<strong>in</strong> or operability for a given tested<br />

component, the uncerta<strong>in</strong>ty of the test equipment should be considered<br />

conservatively.<br />

The calibration records provide a calibration history, show<strong>in</strong>g calibration <strong>in</strong>tervals, date<br />

of last calibration, when the next calibration is due, conformance or non‐conformance to<br />

required tolerances before and after adjustments, and any limitations on use. It is often<br />

desirable to affix a sticker directly to the test equipment, giv<strong>in</strong>g the date of previous<br />

calibration and the required date of the next one.<br />

When test equipment is found to be out of calibration, the validity of tests done s<strong>in</strong>ce the<br />

last calibration date is evaluated. For this purpose, it is recommended that a history of<br />

usage for each piece of test equipment be ma<strong>in</strong>ta<strong>in</strong>ed. Test equipment found to be out of<br />

calibration is identified by a tag or other suitable means.<br />

Special consideration should be paid when determ<strong>in</strong><strong>in</strong>g calibration <strong>in</strong>tervals. Some test<br />

equipment vendors may guarantee shorter period of time for their equipment than similar<br />

test equipment. In this case, the user of test equipment should be careful not to exceed the<br />

calibration <strong>in</strong>terval given by vendor to ensure the quality of the test.<br />

12.2.6.7. Surveillance documentation and records<br />

All results of surveillance activities are documented and recorded. Arrangements are<br />

made for documentation to be issued and ma<strong>in</strong>ta<strong>in</strong>ed <strong>in</strong> accordance with quality<br />

assurance requirements. The follow<strong>in</strong>g is a list of typical documents related to<br />

surveillance activities:<br />

Logs and logbooks giv<strong>in</strong>g the readouts of safety system parameters;<br />

Recorder charts and computer pr<strong>in</strong>touts;<br />

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