ML20009C589
| ML20009C589 | |
| Person / Time | |
|---|---|
| Site: | Wolf Creek, Callaway  |
| Issue date: | 07/13/1981 |
| From: | Seiken S STANDARDIZED NUCLEAR UNIT POWER PLANT SYSTEM |
| To: | James Keppler, Seyfrit K NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III), NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV) |
| References | |
| 10CFR-050.55E, 10CFR-50.55E, SLNRC-81-57, NUDOCS 8107210248 | |
| Download: ML20009C589 (2) | |
Text
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hh so-mye, SNUPPS Stendardized Nuclear Unit Power Plant System 5 Choke Cherry Road Rockville, Marylend 20060 (301) 86dNB010 July 13,1981 SLNRC 81-57 FILE: 0491.10.2/M-218C SUBJ: Corner & Lada Pipe Support Sway Struts: Significant Deficiency Report No. 80-3 Mr. James G. Keppler Director, Region III e@ / g d
Office of Inspection and Enforcement f
U.S. Nuclear Regulatory Commission s,
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'f V yQ 799 Roosevelt Road s
Glen Ellyn, Illinois 60137
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-1 Mr. Karl Seyfrit k-Director, Region IV U.S. Nuclear Regulatory Commission 9
y
/
Suite 1000, Parkway Central Plaza s
611 Ryan Plaza Wh e
Arlington, Texas 76012 Ref:
- 1) SLNRC 80-32 dtd.7/24/80: Subj. as Above
- 2) SLNRC 80-49 dtd. 11/7/80: Subj. as Above Gentlemen:
Reference 1, as supplemented by Reference 2, forwarded to NRC a generic report covering defective Corner & Lada pipe support sway struts fur-nished to Callaway and Wolf Creek jobsites. Tne report indicated that specific sway struts would be inspected and tested for tightness prior to use-in order to confirm tightness of the paddle / bushing assembly.
It was further indicated that struts found with loose bushings would be replaced.
r The purpose of this letter is to advise NRC that add'itional measures are being taken to preclude disengagement of paddle / bushing assembly.
These measures will provide for the use of conical shaped washers in all Size 2 and 3, Figure 631 sway struts.
These washers are designed to prevent. disengagement of the bearing bushing from the rod paddle without jeopardizing specified design clearances and function. The N3 use of washers is limited to the Size 2 and 3 units since other size I
units cannot physically accommodate such disengagement. On these other 5 j units, the inspection and testing indicated in the reference reports g
will continue.
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8107210248 810713
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i PDR ADOCK 05000482
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4 SLNRC 81,
Page Two If you have further questions regarc'ng these additional actions, please advise.
Very truly yours, 7
S. J. Seiken.
Quality Assurance Manager i
SJS:dck:8b30 i
cc:
G. L. Koester, KGE D. T. McPhee, KCPL J. K. Bryan, UE W. Hansen, NRC/Callaway T. Vandel, NRC Wolf Creek J. Konklin, NRC Region-III
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Victor Stello, Jr. Director, Office of I&E, USNRC, Washington, D.C.
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