ML20129G719
| ML20129G719 | |
| Person / Time | |
|---|---|
| Site: | Bellefonte  |
| Issue date: | 05/20/1985 |
| From: | Hufham J TENNESSEE VALLEY AUTHORITY |
| To: | Grace J NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| References | |
| NUDOCS 8506070349 | |
| Download: ML20129G719 (2) | |
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Q TENNESSEE VALLEY AUTHORITY CHATTANOOGA. TENNESSEE 37401 0
1630 Chestnut Street Tower II 08/
fYE2 May 20, 1985 gg ' 0 BLRD-5043845-14 BLRD-5043945-14 8
U.S. Nuclear Regulatory Commission Region II Attn:
Dr. J. Nelsm Grace, Reglonal Adninistrator 101 Marietta S treet, NW, Saite 2900 Atlanta, Georgta 30323
Dear D r. G race:
BELLEFmTE NUCLEAR PLANT INITS 1 AND 2 - CONTAINENT IS(LATICN B ARRIER DEFICIENCY - BLRD-5043845-14, BLRD-5043945 FIRST INTERIM EPORT
. The subj ect deficiency was initially reported to NRC-OIE Impector Al Ignatonis on April 22, 1985 in accordance with 10 TR 50.55(e ) as Nm BLN lEB 8503 Enc 1med is our first interim report. We expect to subnit our next report on or about Septenber 17, 1985.
If you have any questions concerning this matter, please get in touch with R. H. Shell at FTS 858 e688.
Ve.ry truly yours,
TE191ESSEE VALLEY AUrHORITY J. W. Huf han, Manapr Licensing and Regulations Enelas tre cc (Enclosure):
Mr. Janes Taylor, Director 0frice of Impeetion and Enforoement U.S. Nuclear Regulatory Canaissim Washington, D.C. 20555 Records Center Imtitute of Nuclear P ower Operatims 1100 circle 75 Parkway, 32ite 1500 Atlanta, GeorgLa 30339 gggg gag
,DtticialGod Sev7h An Equal Opportunity Employer
e EN15URE BELLEFWTE NUCLEAR PLANT UNITS 1 AND 2 CONTAINtENT IS1ATIW B ARRIER DEFICIENCY BLRD-50-438/85-14 AND BLRD-50-439/85-14 10 TR 50.55(e)
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FIRST INTERIM REPORT Description of Deficiency The design criteria for the contalment isolation and leak testing systen, N4-NI-Irl40, requires at least two contaiment isolation barriers with the following minime requirements:
contaiment isolation valves, piping between these valves, and closed systems used as isolation barriers shall be, as a minimm, A!B Safety Class 2.
The drain line and the compressed air line attached to the fuel transfer tube (penetrations X-37 and X-78) each have only one mantal isolation valve within the seismic category I, safety class 2 botndaries.
Interim Prcgress TVA design documents are being reviewed to detemine the requimd document revisions to comply with code and safety requirements. When this mview is complete, the documents will be issued and the required modifications will be made to the plant piping to provide the required contalment isolation.
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