ML19253A815

LER 79-076/03L-0:on 790814,determined That Containment Gas Chromatograph Could Not Be Calibr.Caused by Internal Failure of Thermoconductivity Detector.Another Detector Renewed, Satisfactorily Tested & Returned to Svc on 790828

ML19253A815
Person / Time
Site:	Crystal River
Issue date:	09/04/1979
From:	Cooper J FLORIDA POWER CORP.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML19253A813	List: ML19253A812 ML19253A815
References
LER-79-076-03L, LER-79-76-3L, NUDOCS 7909110430
Download: ML19253A815 (2)

Text

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g ,could not be calibrated. This created an event contrary to Tech. Spec. 3. 6. 4. ];

, , ,and a thirty (30) day action statement was implemented. No effect upon the i g y,,, plant or general public as a redandant containment hydrogen analyzer was availq g [able and operable. Fourth occurrence of.this event as reported by LER's g g ,,lj77-72 and 79; and 78-47. I

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,ie [The cause of this even; was due to internal failure of the thermo-conductivityi

,,,,, , detector. A spare analyzer was used to return the unit to operational status ,

,,, gat 0355, on 17 August 1979. The detector for the Fisher Hamilton model 29 i m I m chro-n o - ,,5 v,s -a" ved c,*4ct,- nr41,

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' supplementary Inf ormation Report No.. 50-302/79-076/03L-0 Facility: Crystal River Unit #3 Report Date: 4 September, 1979 Occurrence Date: 14 August 1979 Ideutification of Occurrence: Containment gas chromatograph inoperable contrary to Technical Specification 3.6.4.1.

Conditions Prior to Occurrence:

Mode 1, power operation (100%)

Description of Occurrence:

At 1000, it was determined by Chemistry / Radiation lab techs that the Containment gas chromatograph could not be cali-brated in accordance with Chemistry Procedure Ch-120-L, Fisher Hamilton Medel 29 gas partitioner. This created an event contrary to Technical Specification 3.6.4.1 and entry into a thirty (30) day action statement was im-p leme n t.ed . Investigation reveal 3d that the thermo-conducti-vity detector had failed. A spare analyzer was intercon-nected with the chromatograph and the unit was returned to operational status at 0355 on 17 August 1979.

Designation of Apparent Cause:

The cause of this event can be attributed to internal failure of the thermo-conductivity detector.

Analysis of Occurrence:

No effect upon the plant or general public as a containment hydrogen analyzer was available and operable.

Corrective Action:

The thermo-conductivity detector for the Fisher Hamilton Model 29 gas chromatograph was renewed, satisfactorily tested and returned to service on 28 August 1979.

Failure Data:

This is the fourth occurrence of this event as reported by LER's 77-72 and 79, and 78-47.

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