ML20010D247
| ML20010D247 | |
| Person / Time | |
|---|---|
| Site: | Bellefonte  |
| Issue date: | 08/18/1981 |
| From: | Mills L TENNESSEE VALLEY AUTHORITY |
| To: | James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| References | |
| 10CFR-050.55E, 10CFR-50.55E, NUDOCS 8108240242 | |
| Download: ML20010D247 (2) | |
Text
,
,/
TENNESSEE VALLEY AUTHO9ITY CHaTTANOOG A. TErJN ESSEE 37401 400 Chestnut Street Tower II August 18, 1981 m
D BLRD-50-438/81-50 p
BLRD-50-439/81-52
[,
q bOI A 78 Mr. James P. O'Reilly, Director u,
b ccMgron Q Office of Inspection and Enforr.c. ment g
U.S. Nuclear Regulatory Commission
,g Region II - Suite 3100 g
T *Q 101 Marietta Street T
Atlanta, Georgia 30303 7
Dear Mr. O'Reilly:
BELLEFONTE NUCLEAR PLANT UNITS 1 AND 2 - MAIN STEAM VALVE ROOM A PIPE ANCHOR SUPPORT LOADS - BLRD-50-438/81-50, BLRD-50-439/81 FIRST INTERIM REPORT The subject deficiency was initially reported to NRC-0IE Inspector R. V. Crlenjak on July 21, 1981 in accordance with 10 PfR 50.55(e) as NCR BLN BLP 8120. Enclosed is our first interim report. We expect to submit our next report by October 8, 1981.
If you have any questions concerning this matter, please get in touch with D. L. Lambert at FTS 857-2581.
Very truly yours, TENNESSEE VALLEY, AUTHORITY u
O NuclearR{s, Manager
. M. Mil egulation and.ifety Enclosure cc:
Mr. Victor Stello, Jr., Director (Enclosure)
Office of Inspection and Enforcement U.S. Nuclear Regulatory Commission Washington, DC 20555 1n1 I
C108240242 810818 05000 An Equal opportunity Employer
ENCLOSURE BELLEFONTE NUCLEAR PLANT UNITS 1 AND 2 MAIN STEAM
-LVE ROOM A PIPE ANCHOR SUPPORT LOADS BLRD-50-438/81-50, BLRD-50-439/81-52 10 CFR 50.35(e)
FIRST INTERIM REPORT Description of Deficiency Two main steam pipe anchors and one feetwatue pipe anchor (6-way restraints) per unit are attached to the R-line wall in the A main steam valve rooms. The original design of the R-line wall and roof slabs was accomplished using preliminary loads and preliminary anchor design concepts. When the anchor design was completed and the actual anchor embedment loads determined, the actual loads were significantly higher than the preliminary design loads, but the R-line wall and roof slabs were not reevaluated.
Interim Progress Additional analysis is being performed on the R-line wall and roof slabs. The new analysis will account for the presence of a stiffening wall perpendicular to the R-line wall in the proximity of the center most main steam line anchor. Should this approach result in the wall remaining inadequate, the wall will be strengthened with a series of concrete stiffening elements.
l
.