ML19340C861
| ML19340C861 | |
| Person / Time | |
|---|---|
| Site: | Trojan File:Portland General Electric icon.png |
| Issue date: | 10/31/1980 |
| From: | Engelken R NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION V) |
| To: | Withers B PORTLAND GENERAL ELECTRIC CO. |
| References | |
| NUDOCS 8012170841 | |
| Download: ML19340C861 (1) | |
Text
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URITED STATES NUCLEAR REGULATORY COMMISSION g
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REGION V o $*OJ 1930 N. CALIFORNI A DOULEVARD D
,e SUITE 202, WALNUT CREEK PLAZA o,,,e WALNUT CREEK, CALIFORNIA 94596 Cctober 31, 1980 Docket i 0. 50-344 Portland General Electric Company 121 S.
'.-l. Salror Street Portland, Oregon 97204 Atfention:
Mr. Bart D. Withers Vice President liuclear Gentlemen:
The enclosed Information fiotice provides early notification of an event that may have safety significance. Accorcingly, you should review the Information flotice for possible applicability to your facility.
fio specific action or response is requested at this time; however, contingent upon the results of further staff evalu2 tion, a Bulletin or Circular recom-mending or requesting specific licensee actions may be issued.
If you have questions regarding this uatter, please contact me.
Sincerely, ir fl! f
~ ' '
P.
H'. Engelken Director
Enclosures:
1.
IE Information I:otice i:o. 30-39 2.
Recently issued IE Information
?!otices cc w/ enclosures:
C. P. Yundt, PGE J. M. Durhan, Esq.
Senior Vice President and Corporate Counsel 80:12]fo g
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SSIflS f!o. : 6835 Accession "o.:
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U:ITED STATES d
- UCLEAR REGULATODY CC"MISSIO!!
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0FFICE OF INSPECTICM AND ENF00 CEMENT l
' ASHINGTON, D. C. 20555 Jctober 31
, 1950 i
IE INFOR"ATIO1 i:0TICE 40. C0-19 "ALFUtiCTION OF SOLEN 0ID VALVES !'ANUFACTURED OY VALCOR Ef:GINEERIf:G CORPORATION l
j PURPOSE:
The intent of this Information Notice is to alert holders of construction
- l pernits and operatina licenses for nuclear cower plants of a potentially
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generic croclen involvino the ralfunctionina of certain solenoid valves manu-j factured by the Valcor Enqineering Corcoration (Valcor). The solenoid valves i
so j nvolved are desionatec as Valcor Valve i'odel tio. V52600-554-1.
Valcor has inforred us tnat tnese valves nave only teen suoplied to the l'cGuire facility; however, since tnese valves were suostituted for solenoid valves cf another ranufacturer that did not reet tne reauirenents of IE Culletin No. 79-01 and its arencments, licensees and noiders of construction permits should take into i
account the problem iaentifiea in this Infornation Notice prior to making any sinilar substitution.
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BACr.GRCOND:
By TUX dated June 27, IC30, Valcor sut'nitted a preliminary 10 CFR Part 21 Recort addressina the c.aifunctioning of Valcor solenoid valves at the FcGuire facil i ty.
The malfunctionino valves have been identified as Valcor Valve idodel No. 52600-554-1.
This TUX was subsequently followed by a letter dated July 3,1950, transmitting a more aetailed Part 21 Report entitled," Quality Assurance P.eport", a copy of which is attached hereto as Enclosure No.1.
In brief, the ralfunction appears to be an intermittent type wherein the valve fails to cycle fron OPEN to CLOSE to OPEN immediately after a sustained period of operation in the energind (OPEN) mofe. Although the valves are rated for
" continuous operation", Valcor contends that the valves were not designed to reet the operating conditions reluiri'g the immediate cycling from OPEN to CLOSE to OPEM af ter a sustained period of continuous energi:'ation.
A major scurce of the problem, therefore, nay be a misunderstanding of the term
" continuous operation". By letter dated July 14, 1980 to Duke Power Company, Valcor transnitted its recommendaticns in this matter entitled, " Outline -
Suqgested "odification Procedures", a copy of which is attached hereto as Enclosure No. 2.
l DUPLICATE DOCUMENT Entire document previously entered into system under:
ANO b_ d $ h M M l
l No.' of ages:
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