ML19319D047

LER 78-026/03L-0:on 780424,175 Ft Delta Temp Instrument Found Out of Calibr During SP-158 Performance.Caused by Temp Probe Failure.Temp Probes Renewed.Corrective Action Unnecessary

ML19319D047
Person / Time
Site:	Crystal River
Issue date:	05/12/1978
From:	Cooper J FLORIDA POWER CORP.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML19319D042	List: ML19319D041 ML19319D047
References
LER-78-026-03L, LER-78-26-3L, NUDOCS 8003040964
Download: ML19319D047 (2)

Text

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LICENSEE EVENT REPORT

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, g Instrumentation Calibration (SP-158) it was discovered that the 175 ft. t mg Delta Temperature instrument was out of calibrat. ion. No hazard to the l gg health and safety of the public as the 175 ft. and 33 ft. temperature ,

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SUPPLEMENTARY INFORMATION

1. R port No.: 50-302/78-026/03L-0 2t (m\2111ty: Crystal River Unit #3

3. Report Date: 11-May 1978 *

4. Occurrence Date: 24 April 1978

5. Identification of Occurrence:

175 ft. Delta temperature indication out of calibration contrarf to Technical Specification 3.3.3.4.

6. Conditions Prior to Occurrence:

Mode 6 refueling.

7. Dsseription of Occurrence:

i At 1100 during the performance of the Meteorological Monitoring Instrumentation )

Calibration (SP-158) it was discovered that the 175 ft. probe of the Delta temperature '

instrument had failed. Both the 175 ft. and the 33 ft. probes were replaced and cal- <

ibrated using SP-158, and returned to service within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />.

8. Dasignation of Apparent Cause.

Cause of this event was due to the failure of the 175 ft. temperature probe.

9 21ysis of Occurrence:

No' hazard to the health and safety of the general public as-the 175 ft. and 33 ft.

temperature indications were available.

10. Corrective Action:

No corrective action necessary as new probes were installed in the 175 ft. sud 33 ft.

Delta temperature instrument.

11. Failure Data:

First occurrence of this event.

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