ML20128D643
| ML20128D643 | |
| Person / Time | |
|---|---|
| Site: | Bellefonte  |
| Issue date: | 04/25/1985 |
| From: | Hufham J TENNESSEE VALLEY AUTHORITY |
| To: | Grace J NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| References | |
| IEB-79-14, NUDOCS 8505290151 | |
| Download: ML20128D643 (2) | |
Text
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- April - 25, ~1985 4g*
BLRD-5543844-07 BLRD-5043944 -06
.h U.S. Nuclear Regulatory Camission Region II Attn:
Dr. J. Nelsm Grace, Regtonal Adninistrator 101 Marietta Street, NW, Guite 2900 Atlanta, Georgta 30303
Dear Dr. Grace:
BELLEFWTE NUCLEAR PLANTS WITS 1 AND 2 - G. GAL 000RDINATES T MLXIMJM PIPE POVEENTS - BLRD-5043844-07, BLRD-50-43944 SECOND INTERIM REPORT The subject deficiency was initially reported to NRC-0IE Inspector C. A. Julian on January 18, 1984 in accordance with 10 TR 50 55(e) as NG BLN EB 8308.
Our first interim report was subnitted on February 15, 1984.
Encimed is our second interim report. We expect to
'subnit our next report by July 3,1986.
'If you have any questions, please get in touch wLth R. H. Shell at FTS 858-2688.
1 Very truly yours,
TENNESSEE VALLEY AUfHORITY W
. W. Hufhan, Manalpr j
Licensing and Regulations Encimure oc:
Mr. James Taylor, Dimotor (Encimure)
Office of Inspection and Enforcement U.S.; Nuclear Regulatory Camission Washington, D.C.
20555 Records Center (Enclmure)
Imtitute of Nuclear Power Operations 1100 circle 75 Parkway, Suite 1500 Atlanta, Georgia.30339 egg 52 Do@[$$
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OFFICIAL COPY An Equal Opportunity Employer
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EN10SURE BELLEFWTE NUCLEAR PLANTS UNITS 1 AND 2 GLCB AL 000DINATES OF MXIMJM PIPE WVEENTS BLRD-50-138/84-07, BLRD-50-439/84-06 NCR BLN GB 8308 10 TR 50.55(e)
SECOND INTERIM REPORT Description of Deficiency Bellefonte analysis ismetric drawings have a note which relates maxima pipe movements to the global x, y, z directions. These rntes are used to evaluate potential interferences at the plant site. Earlier versions of the TPIPE program did not list the maximm movements of the system, so movements were extracted and samed by hand. The analysts obtaining these movements did not note a nonglobal dimetion. Therefore, a dimetion on the isometric drawing does not relate to the movement direction in the note. Since nonglobal coordinates were used in many analyses, this interference evalmtion effort is errone'ous and could ledd to incorrect conclusions during the IE Bulletin 79-14 walkdown. The deficiency was discovered during a movement review.
Interim Prcgress The review detailed in TVA's first interim report on this deficiency has been completed for all rigorous probles. Forty-two rigorous analysis probles requim further evaluation or rework. IVA will supply a final report upon completion of the design review and rework.
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