ML19330A869

Revised LER 80-068/01T-1:on 800530,while in Mode 5,informed That Wide Range Steam Generator Level Transmitters 1-LT-3- 43,-56,-98 & -111 Not Qualified to Withstand post-accident Environ.Caused by Use of Improper Transmitters

ML19330A869
Person / Time
Site:
Issue date:	07/25/1980
From:	Reynolds R TENNESSEE VALLEY AUTHORITY
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML19330A860	List:
References
LER-80-068-01T, LER-80-68-1T, NUDOCS 8007290673
Download: ML19330A869 (2)

Text

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Tennessee Valley Authority Sequoyah Nuclear Plant LER SUPPLEMENTAL INFORMATION SQRD-50-327/8068 Rev$sion 1 Technical Specification Involved: None 4

Reported Under Technical Specification 6.9.1.12.1 Date of occurrence: 5/30/80 Time of Occurrence: 0800 EST Identification and _ Description _ of_0ccurrenc_e,:

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

TVA Tag Nos. LT-3-43, -So, -98. -111 (W Noe. LT-501, -502, -503, -504)

Condition Prior to_ O_ccurrence:

Unit in Mode 5 with all fuel loaded.

Actica specified in the Technical Specification Surveillance Requirements met dec to inoperab1_c_ equipment.

N/A J Apparent Cause of Occurrence:

Per FSAR Table 3.11-2 the temperats c could reach 327 F, the instruments are qualified up to ISO ; operation.

Analysis of Occurreni.e:

Should the post-secident environment of the No. 4 accumulator room reach or exceed 180*F, the instruments possibly would not be capable of performing their intended post-accident functions. ,

There was no hazard to public health and safety.

Corrective Action:

The subject transmitters have been replaced with transmitters capable of withstanding the accident environment.

Failure Data: .

None.

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