ML20116B702
| ML20116B702 | |
| Person / Time | |
|---|---|
| Site: | Bellefonte  |
| Issue date: | 04/15/1985 |
| From: | Hufham J TENNESSEE VALLEY AUTHORITY |
| To: | Grace J NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| References | |
| NUDOCS 8504260073 | |
| Download: ML20116B702 (2) | |
Text
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TENNESSEE VALLEY AUTHORITY Wdh"eshnu^t ISt"reet hower$
April 15, 1p85 BLRD-50438/82-71 a5 /,PR 17 n10 : 2 2 BLRD-50439/82-65 U.S. Nuclear Regulatory Commission Region II
^
Attn:
Dr. J. Nelson Grace, Regiomi Adninistrator 101 Marietta Street, NW, Suite 2900 Atlanta, Georgia 30303
Dear Dr. Grace:
BELLEPWTE NUCLEAR PLANT INITS 1 AND 2 - WIERDESINED SNUBBER ON MILIN FEEDWILTER PIPING IN VALVE RDOM B - BLRD-50438/82-71, BLRD-50439/82 FIFTH INTERIM REPORT' The subject deficiency was initially reported to NRCAIE Inspector K. Landis on October 13, 1982 in accordance with 10 TR 50.55(e) as NCR BLN B 8214.
This was followed by our interim reports dated November 10, 1982 and February 16 and May 25, 1983, and January 16, 1984.
Enclosed is our fifth interim report. We expect to subnit our next report on x about September 29, 1986.
If you have any questions, please get in touch with R. H. Shell at FTS 858-2688.
Very truly yours, TENNESSEE VALLEY AUTHORITY W. Hufh akr L oensing Regulations Enclosure d
oc (Enclosure):
Mr. Jmes Taylor, Director Office of Inspection and Enforcement U.S. Nuclear Regulatory Camission Washington, D.C.
20555 Records Center Institute of Nuclear Power Operations 1100 Circle 75 Parkway, Suite 1500 Atlanta, Georgia 30339 i
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A snubber on the main feedwater piping in valve room B, shown on u
r isometric drawing 1AWO501-CF-B1 at node 5, is underdesigned. The calculnted loads (analysis problem N4-1CF-B and N4-2CF-B) at node 5 are low, because a snubber Tvighced en a valve operator at node 25
,fh' which apparently added redt'rS15 to the piping. The snubber atInoda N
25 if required, should 'not' provide significent re'atraint to the r
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CEBreport75-28,5,'))hnamicEarthquakeAnalysisoftheMainSteamValve' h T
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Room B and Response Spectra for Attached Equipment," presents the
',4, spectra curves in 2 components (translational and tor'sional). The
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components and effects into the floor response speedra. 'The analysys problems affected are:
1r N4-1(2) CF-C, -B,
-H N4-1(2) CR-D, -G N4-1(2) SM-R, -S, -C, and -B N 4-1 ( 2 ) SV-A, -I, -S, -K, -L, -M, and -Q Interim Progress 1
TVA is continuinE with the reanalysis of the problems which are affected by this deficiency.
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