ML20151H140
| ML20151H140 | |
| Person / Time | |
|---|---|
| Site: | Nine Mile Point, 05000000 |
| Issue date: | 11/20/1981 |
| From: | Bagchi G NRC |
| To: | Johnston W NRC |
| Shared Package | |
| ML20150F672 | List:
|
| References | |
| FOIA-88-356 NUDOCS 8112110007 | |
| Download: ML20151H140 (1) | |
Text
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NOTE TO: Bill Johnstori FROM:
Goutam Bagchi Q
SU3 JECT: NINE HILE POINT 2 - USE OF GULF & WESTERN BA L VALYES 'd,C FOR MIN STEAM ISOLATION VALVES S;}. - 4 1 -
As a result of a phone call fmm Mr. Levin of the Consumer Protection Board of the State of New York concerning the above subject, we called Mr. Laney, consultant to the Board, on November 19. 1901. Taking part in the phone conversation were Dave lynch NMP-2 PM Bob LaGrange, and mys el f.
We referred Mr. Laney to a January 2.1981, nemo from R. Tedesco to Mr. Rhode of Niagara Mohawk (attached). Dave Lynch read the third paragraph of this memo to Mr. Laney and inforned him that he could get a copy of it from the LPDR. After some discussion on the content of this meno Mr. Laney stated that we had provided him with the infomation he was looking for.
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NUCLE AR REGULATORY COMMISSION 4.,'.
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[1'I Suc;ect:
reccesed Cestgn Change of the Pain Steam Isolation Yalves for Nine Mil'e Point. Unit 2 feq 1
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- n yeur letters, dated April 3.1979 and Septecter 8,1980 you requestett a
4 a:preval cf a cesign change in the hine Mile Point. Unit 2. main steam isolation valves.
You : reposed using a 24-inch positive seal ball valve cesigned and h;
sanuf actured by the Fluis systems Otvisten. Energy Procucts Group,of Gulf C.$
anc 'aestern.vanuf acturing Con;any.
This valve wculd be substituted for the Id Y.;4ttern slete valve with its seal water systere described in your PSM.
Ycu stated that because of the unicue design of the positive valve seal, the y
if leakage f rcm this valve weald be negitgtble. You concluded that a natn steam
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isclatten valve leakage control system would not be necessary. On this tasis Y!
you stated that you do not plan to install such a system for these valves.
w Ycu referercec Gelf and Western's Tcptcal Repert. Mo. GW F50 2538 which Se'i ceals with the.atn steas valve system and resvested corSletion of our rtytew cf this repert by Decerter 31,19P4. In order to r.aintain your current engineering E
and cor.structicn schecule. The OC's review of tcpical reports in generai has a 4
low pricrity at present. Spectf tcally, this GW Topical Report is not schacuted fer review tefere mic 1981. Hewever, it is our position that use of this valve
's need r.ct be certingent on our review of this topical report.
h' Ci he see no problem if you proceed with the procurement and installation of these
@d valves, basec on ycur ceterstnation that the valve satisfies our acceptance criteria fer PSl'/'s.
The tasts for our position on this matter is that the integrity t%
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cf *Fese. valves will be ascertained by strict in service inspection and testing recutrecents.
In particular, you will be required tc check these valves with
- Pe sa?e f recueacy and against the seet leakage requirewnts as r.aln steam
%'f wa'<es with a suscle ental leakage control system. If the leakage exceeds these l
5:ect'tcations er if cur later review of the tcpical report discloses groblems 4
ottn 19e ;rocesec system. we will require you to repair. 'rodify. or replace 9 l 4
- hese valves.
It is cur further position that you shculd reserve space and 11' tn! 4::ro:rtate conta'anent genetraticns in the event that we require bactfitting 4
c<.., m o ge centrei system at a iater case.
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f inally, we nete t5at section A of Regulatory Caide 1.96. Revision 1, *0esign of watn Stets !solatten Yalve Leakage Ce<1 trol Systeos for Soiling Water Deactor
'Nelear Power Plants," states: "!f an applicant proposes to use a Mthol
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11'ferant fecn that sescribed in this guide for implecenting General Oesign g
Criter a 54 with regarc to the control or lit.itation of leakage past the main stean stolation valves of a boiling wa'er reactor, the acce:tability of the alteMa'.tve Mthod will be deteminec by the staf f on a case-by. case basis.*
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The he*Ned thich the staff reccrrefids in secticn 0.2 of Regulatory Guide 1.%
7 is a 5. DieMntal leakage control system, assuming that. one of the Nre
'1 conventtenal MS!Y's is being used. Since your proposal is an alternative
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to this staff position, W will rtview it on a case by. case basis no earlier than 1931, as noted above.
sincerely, C
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Retert L. Tedesco. Assistant Director
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