ML19330A869
| 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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[:f.1 L While Mode 5, plant informe [ 3 g level transmitters, 1-LT-3-43 -56, -98, -111, are not qualified to i E; g [ withstand a post-accident environment. These transmitters provide level I I il d i sienn's f o r PA2_in d i en e c re: _ There unn f o heard en the hanith and [.g Laafety of p_l,, ant personnel or the public. 1
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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. Y _}}