ML20023B159
| ML20023B159 | |
| Person / Time | |
|---|---|
| Site: | Perry  |
| Issue date: | 12/14/1982 |
| From: | Youngblood B Office of Nuclear Reactor Regulation |
| To: | Edelman M CLEVELAND ELECTRIC ILLUMINATING CO. |
| References | |
| NUDOCS 8212230385 | |
| Download: ML20023B159 (3) | |
Text
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1Decisment: Control (50-440/441)T'%'
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DEC 141982 L PDR PRC System NSIC Docket Nos.: 50-440 and 50-441 LB#1 Rdg.
mushbrook JStefano Mr. Murray R. Edelman DEisenhut/RPurple Vice President - Muclear Group Attorney, OELD The Cleveland Electric 111uminating Company ACRS (16)
Post Office Box 5000 ELJordan, DEQA:IE Cleveland, Ohio 44101 JMTaylor, DRP:IE HBrammer, MEB
Dear 14r. Edelnan:
DTerao, MEB
~
Subject:
Request for Additional Information Regarding Safety Relief Valve Piping and Quencher Device - Perry Nuclear Power Plant (Units 1 and 2)
The racetina report prepared by the Perry project manager (John J. Stefano) dated Novenber 30, 1982, sumarizes discussions held with your staff on Hoverter 22, 1982 relative to the need to conduct SRV hydrodynamic load tests for Perry. The report highlighted a concern, expressed at the meeting by Mr. David Terao, regards potential thermal gradient stresses in the SRV dis-charge pipe supports in the suppression pool area. Enclosed are the specific questions which formulate that concern.
It is anticipated that they will be addressed in your submittal covering the additional information (detailed in a subsequent conference call held between your staff and the NRC Structural Engineering staff) in supporting your SRV no-test oroposal.
If the enclosed questions will be responded to separately, please advise Mr. Stefano, upon receipt of this letter, when we may expect to have a reply.
Sincerely, Original signed by B. J. Youngblooy B. J. Youngblood, Chief Licensing Branch No. 1 Division of Licensing
Enclosure:
As stated cc w/ encl.:
See next page
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NRC FORM 318 u0-80) NRCM Ono OFFICIAL RECORD COPY usaro:mi--ass-ees l J
Mr. Murray R. Edelman Vice -President, Nuclear Group The Cleveland Electric Illuminating Company P. O. Box 5000 CleveJand, Ohio _44J01...
cc: Jay Silberg, Esq.
Shaw, Pittman, Potts & Trowbridge 1800 M Street, N. W.
Washington, D. C.
20006 Donald H. Hauser, Esq.
The Cleveland Electric Illuminating Company P. O. Box 5000 Cleveland, Ohio 44101 Resident Inspector's Office U. S. Nuclear Regulatory Commission l
Parmly at Center Road Perry, Ohio 44081 U. S. Nuclear Regulatory Commission Mr. James G. Keppler, Regional Administrator, Region III Mym f r +.e 289.. Roos.evel t.. Road.. w..:%m.,,%..,.
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Glen Ellyn, Illinois.60137 Donald T. Ezzone, Esq.
Assistant Prosecuting Attorney et 105 Main Street Lake County Administration Center Painesville, Ohio 44077 Daniel D. Wilt, Esq.
P. O. Box 08159 1
Cleveland, Ohio 44108 Ms. Sue Hiatt OCRE Interim Representative 44060{
8275 Munson Mentor, Ohio Terry Lodge, Esq.
915 Spitzer Building Toledo, Ohio 43604 John G. Cardinal, Esq.
Prosecuting Attorney Ashtabula County Courthouse i
Jefferson, Ohio 44047
._________..__.__Q
e ENCLOSURE In recent discussions with the applicant, it has become 210.9 apparent to the staff that the safety-relief valve (SRV) piping
+
in the suppression pool are provided with horizontal quencher supports that are welded directly on the piping.
In the staff's opinion, the welded attachment could cause excessive localized bending stresses and harmful thermal gradients in the pipir.g following actuations of the safety-relief valves.
Furthermore, the relatively large number of stress cycles could gj result in fatigue failure in the piping. The applicant is lI requested to provide detailed analyses of the welded attachment to verify that the structural integrity of the piping and the quencher support capabilities are not compromised.
h 210.10 The quencher device is classified as an ASME Code Class 3 component.
Provide the basis for assuring that the quencher device has been adequately designed for all applicable stresses resulting from the actuation of the safety-relief valves including localized bending stresses and thermal gradients.
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