ML20027B900

LER 82-056/03L-0:on 820827,during Normal Operation,Primary Containment Average Air Temp Exceeded 130 F Tech Spec Limit. Caused by Failure of Pneumatic Control Line for Industrial Coolers.Control Line Replaced & Coolers Returned to Svc

ML20027B900
Person / Time
Site:	Crystal River
Issue date:	09/24/1982
From:	Ford E FLORIDA POWER CORP.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML20027B896	List: ML20027B895 ML20027B900
References
LER-82-056-03L, LER-82-56-3L, NUDOCS 8209300289
Download: ML20027B900 (2)

Text

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EVENT DATE ,a ?S nero.'T DAtt 80 EVENT DESCRIPTION AND PROB AOLE CONSEQUENCES gl At.1420, during normal operation, t was discovered that the primary e i

o a 1 containment average air teinperature exceeded the 130 Degree F. limit .

1 o . p of T.S.3.6.1.5. There was no effect upon public health or safety. This ,

g i is the seventh event to occur under Specification 3.6.1.5.

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CAUSE Or$CRIPTION AND CORREC flVE ACTIONS

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EI This event was caused by failure of a pneumatic control line for the i

, , i industrial coolers. Emergency cooling was started and containment temper- ,

, ature was decreased to within limit by 1458. The control line for the

, ., g affected co71ers was replaced and the coolers were returned to operation.

I I No further corrective action is considered necessary.

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SUPPLEMENTARY INFORMATION REPORT NO: 50-302/82-056/03L-0 FACILITY: Crystal River Unit #3 REPORT DATE: September 24,1982 OCCURRENCE DATE: August 27,1982 IDENTIFICATION OF OCCURRENCE:

Primary containr.ient average air temperature was in excess of the 1300F limit of Technical Specification 3.6.1.5.

CONDITIONS PRIOR TO OCCURRENCE:

Mode I, Power Operation, (95% Full Power).

DESCRIPTION OF OCCURRENCE:

At 1420 during normal operation, it was discovered that the primary containment average air temperature was 1340F. Technical Specification 3.6.J.5 requires that primary containment average air temperature not exceed 1300F. Emergency air cooling units were started, and primary containment average air temperature was reduced to within limit by 1458.

DESIGNATION OF APPARENT CAUSE:

A pneumatic control tube ruptured causing the normal cooling units to be inoperable.

l ANALYSIS OF OCCURRENCE:

Containment temperature was reduced to within limit within the time frame required by the Action Statement of Specification 3.6.1.5. Evaluation is in progress to determine whether Specification 3.6.1.5 maintains conservatism consistent with FSAR and supporting analyses.

l CORRECTIVE ACTION:

The ruptured pneumatic control tube was replaced, and the normal cooler was returned to service.

l FAILURE DATA:

l This was the seventh occurrence to be reported against Specification 3.6.1.5.

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