ML20141M270
| ML20141M270 | |
| Person / Time | |
|---|---|
| Site: | Maine Yankee |
| Issue date: | 08/04/1992 |
| From: | Hebert J Maine Yankee |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| GL-89-04, GL-89-4, JRH-92-68, MN-92-80, NUDOCS 9208110002 | |
| Download: ML20141M270 (1) | |
Text
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{-G MaineYankee-
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HEUA8tf ELfCTROTY FOR MAINE Sif4CE 1972 EDISON DRIVE AUGUSTA, MAINE 04LO + (207) 622 4868 August 4 1992 MN-92-80
-JRH-92-68
' UNITED STATES NUCLEAR REGULATORY COMMISSION
. Attention: ' Document Control Desk Washington _, DC. 20555
References:
(a) License No..DPR 36 (Docket No. 50-309)
-~(b).; MYAPCo Letter to USNRC dated December 29, 1989 (MN-89-156)
Subject:
_ Inservice Inspection Testing Program Gentlemen:.
.y
..._.. Maine Yankee' submitted a-Relief Response-(V-6), Reference (b), of our Inservice Testing-(IST) program requiring. check-valve CH-72 (charging)-to be disassembled and
' inspected every refueling; outage in' lieu of quarterly closure testing while at power.
4 LDuring the 1992: refueling' disassembly, the threaded bonnet became galled, preventing-
~
removaldwithout. damage. The bonnet was tightened-and the-disassembly was cancelled because there was not a suitable replacement valve available.
~
- Theivalve operability was-reviewed?using the guidelines from Generic Letter 04 for extending the dis, assembly / inspection frequency of'a check valve. CH-72 was disassembled in 1990;- the~ measurements of the wear areas and clearances _were found q
zto.be within the manufacturers service tolerances. CH-72 was successfully full flow
- tested open~in March 1992.--
-: Maine Yankee will be writing:a :" Cold Shutdown Justification" for inclusion-in the Lthird interval IST program. -Please' contact us_ should you;have any questions 1
regarding this matter.-
!Very_truly;yours, 29/9 Avh rn James--R. Hebert,-Acting Manager 3
1 Licensing &-Engineering Support Department F J.VW/sjb t
L
'c: ~ iMr.1 Thomas'T. Martin' -
Mr. ; Charles ' S. = Marschall o
- Mr. E..H.'Trottier Hr.LPatrick J. Dostie i k
'920811000219'20804- -- 0 PDR :ADOCK- 05000309 -
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