ML19318A413

LER 80-068/01T-0:on 800530,informed That Wide Range Steam Generator Level Transmitters Not Qualified to Withstand post-accident Environ.Caused by Design Error.Qualified Transmitters Being Obtained for Installation

ML19318A413
Person / Time
Site:	Sequoyah
Issue date:	06/13/1980
From:	Reynolds R TENNESSEE VALLEY AUTHORITY
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML19318A405	List: ML19318A404 ML19318A413
References
LER-80-068-01T, LER-80-68-1T, NUDOCS 8006200497
Download: ML19318A413 (2)

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• Tennessee Valley Authority Sequoyah Nuclear Plant LER SUPPLEMENTAL INFORMATION SQRO-50-327/ 8068 Technical Specification Involved: None Reported U n der Technical Specification 6.9.1.12.1 Date of occurrence: 5/30/80 Time of Occurrence: 0800 EST Identification and Description of Occurrence:'

The listed Westinghouse supplied level transmitters (Foxboro Model E13DM-HSAH1) located inside containment in accumulator No. 4 room do not have the nece.ssary qualifications to withstand a post accident environment.

TVA Tag Fos. LT-3-43, -56, -98, -111 Qi Nos. LT-501, -502, -503 -504)

Condition Prior to Occurrence:

Unit in Mode 5 with all fuel loaded.

Action specified in the Technical Specification Surveillance Requirements met due to inoperable equipment.

N/A Apparent Cause of Occurrence:

Per FSAR Table 3.11-2 the temperature could reach 327 F, the instruments are qualified up to 180 0F operation.

Analysis of Occurrence:

Should the post accident environment of the No. 4 accumulator room reach or exceed 1800 F, the instruments possibly would not be capable of performing their intended post accident functions.

There was no hazard to public henith and safety.

. Corrective Action:

The subject transmitters are to be replaced with transmitters capable of withstanding the accident environment.

Failure Data:

None.

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