ML20244D062
| ML20244D062 | |
| Person / Time | |
|---|---|
| Site: | McGuire, Mcguire  |
| Issue date: | 06/06/1989 |
| From: | Tucker H DUKE POWER CO. |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| TAC-61271, NUDOCS 8906160076 | |
| Download: ML20244D062 (3) | |
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Dure POWER GOMPANY t
P.O. DOX 33189 -
CHARLOTrE, N.O. 28242 HALH. TUCKER TEI.EP,EONE,
1 vsom emenanswr (7o4) 373 4 531 mmi. man enoperonon 1
June 6, 1989-i
(
U. S. Nuclear Regulatory, Commission Document Control. Desk t
'Washingt.,n, D.C.
20555 (CN's 1-10)
Subject:
. : McGuire Nuclear Station, Units 1 and 2~
.2
~ Docket Nos. 50-369 and.50-370
-l Pump.and Valve Inservice Testing Program NRC Review / Program Revision 11 (Unit 1) and 7 (Unit 2)
[Re: Relief Request No. 88-07)~
(TACS'61271/61272)
Commitments Implementation Update Gentlemen J
My letter of October 31, 1988 submitted (pursuant to 10CFR50.'4 and 50.55a(g))
Unit 1 Revision 11 and Unit 2 Revision 7 of the'McGuire Nuclear Station Pump and Valve Inservice Testing (IST) Program. That comprehensive revision reflected the results of a meeting between Duke Power Company and NRC'(with technical assistance from their contracted reviewer, EG&G Idaho, Inc.) held August 16.'and--
17, 1988 to finalize the IST Program. Among the issues-discussed during the meeting, as documented in Mr. D. S. Hood's (NRC/0NRR) letter to me-dated
.i September 8,- 1988 (Ref. Pump Testing Program' questions Nos. 3,:4,.and 5),'were-
- j the accuracy of Duke's portable vibration instrumentation, the Pump Vibration-Monitoring Program units utilized, and bearing temperature measurement.
requirements.
6 As a result of the above mentioned discussions,' Notes 2 and 3 were included in.
'IST Manual Section I.1, along with General Relief Requests B and C in Section l
1.3, in the subject revisions. These noted that McGuire's vibration measurement' f
accuracy is 11%, and that the vibration measuring equipment would be upgraded to meet the IWP instrument accuracy requirement and vibration measurements 1 changed from displacement to velocity by June.1, 1989.(after changing to velocity j
vibration measurements, bearing temperature measurements would be droppe'd from j
the IST Program).
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l This letter is to inform you that the June 1, 1989.date was.not met. ' Duke'has
^
. investigated the available vibration measuring-equipment to evaluate which.
j machine could best meet the needs of~our three nuclear stations (McGuire, Oconee, i
and Catawba).. This evaluation'is still in progress and has encountered several-i delays. Although the vibration measuring equipment to be used by each stationi l
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~I U. S. Nuclear' Regulatory Commission.
Page 2 June 6, 1989 h
.has been' determined, it has been discovered this equipment may not meet the
'l vibration instrumentation requirementsLof IWP:(and OM-6)'.
Plans have been d
--developed.to determine the best obtainable' accuracy for this equipment.- Relief.
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'l will be requested for'IWP Vibration Monitoring requirements that'are impractical. Also, due to delays caused' by the unexpected, steam generator: tube ~
rupture octage, McGuire has not yet implemented'the change from displacement lto R
velocity' vibration measurements. Presently, McGuire is measuring displacement ~
and performing bearing stabilization in accordance with'IWP (General ReliefL l
. Requests I.3 B and C have not been exercised for either unit).
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. Duke is pursuing IWP vibration accuracy requirements and hopes'to resolve the' l
problems in the near future for all three nuclear stations.' McGuire'is pursuing
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the change from displacement to' velocity vibration measurements and plans'to-1 achieve implementation by October 10,-1989.
If there are any questions on this matter, or if: additional information is
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required (especially with respect to any impacts on the McGuire IST Program SER-which is currently being written, as discussed in my May 16, 1989 letter), please I
advise.
Very truly yours,.
i (L__,
i sad 5/(2I j
llal B. Tucker l
,1 PBN169/lcs l
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U 'S. Nuclear Regulatory Commission i
l Page 3 June 6, 1989' j
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Mr. S. D. Ebneter.
Regional Administrator,. Region 11-U.S..' Nuclear Regulatory Commission 101 Marietta St., NW, Suite 2900 Atlanta, Georgia 30323 (CN11)
Mr. Herb Rockhold EG&G Idaho, Inc.
Idaho National Engineering Laboratory 1520 Sawtelle Street Idaho Falls, Idaho -83402 (CN12)
Mr. Darl Hood, Project Manager Office of Nuclear Reactor Regulation U.S. Nuclear Regulatory Commission Washington,.D.C.. 20555 l
Mr. P. K. VanDoorn j
NRC Resident Inspector J
McGuire Nuclear Station j
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