ML20087H708
| ML20087H708 | |
| Person / Time | |
|---|---|
| Site: | Beaver Valley |
| Issue date: | 02/28/1984 |
| From: | Woolever E DUQUESNE LIGHT CO. |
| To: | Murley T NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| References | |
| 2NRC-4-019, 2NRC-4-19, 84-03, 84-3, NUDOCS 8403210130 | |
| Download: ML20087H708 (4) | |
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2NRC-4-019 (412)787 - 5141 Telecopy
-6 Nuclear Construction DMelon February 26, 1984 l
Robinson P1 ara, Building 2. Sulte 210 Pittsburgh, PA 15205 United States Nuclear Regulatory Commission Region I 631 Park Avenue King of Prussia, PA 19406 j
ATTENTION:
Dr. T. E.'Murley Administrator
SUBJECT:
Beaver Valley Power Station - Unit No. 2 Docket No. 50-412 Cencral Electric Type HEA lock-out Relays
- Significant Deficiency Report No. 84-03, Interim Report Gentlemen:
This interim repo rt is in reference to the above subject.
Duque sne Light Company not ified the Region I of fice that an evaluat ion unde r 10CFR 50.55(e) was underway on January 27, 1984.
Pursuant to the requireme nt s of 10CFR50.55(e), an int erim repo rt is submitted, and it is presently ant icipated that a subsequent repo rt on this subject should be submitted to the Region I cf fice by June 15, 1984.
DUQUESNE LIGHT COMPANY
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By
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E. J. Woolever
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Vice President SDH/wjs
' At t achment cc:
Mr. R. DeYoung, Director
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Of fice of Inspection and Enforcement (3) (w/a)
.h Mr. G. Walton, NRC Resident Inspector (w/a)
Ms. L. Lazo, NRC Project Manager (w/a)
NRC Document Control Desk (w/a) 7 l g' INPO Records Center (w/a) e
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SUBSCRIBED AND ORN TO BEFORE ME THIS 17XEDAY OF
//tems 1984.
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as -w sf i ik Not ary Public 0
ELVA G. LESONCA:(, NOTt RY PUOLIC
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ROBINSON TGWNSHIP, ALLEGHENY COUNTY MY COMMISS!ON EXPIRES OCTOBER 20,1935
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i-F United Stctcs Nuciccr Regtilctcry Conunicsien Dr. T. E. Murley Page 2.
COMMONWEALTR OF PENNSYLVANIA )
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COUNTY OF-ALLECHENY
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On this-j 7d day My
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before me, a Notary Public.in and for said Commonwealth and C personally appeared P. H. Orr (who being duly sworn deposed and said that (1) he is duly authorized to execute and flie the. foregoing Submittal on behalf of E. J.
Woolever, Vice
. President-of Duquesne Light, (2) he is duly authorized to execute and file the foregoing Submittal on behalf of said Company, and (3) the statements set
- forth in the Submittal are true and correct to the best of his knowledge, d
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/AN Notary Pubitc /y g m q
ELVA G. LESONDAK, NOTARY PUBLIC ROBINSON TOWNSHIP, ALLEGHENY COUNTY MY COMMISSION EXPIRES OCTOBER 20,1986
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. BEAVER VALLEY POWER STATION.- UNIT NO. 2
' M DUQUESNE LIGHT COMPANY
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Report on? Potential Significant Deficiency No. 84-03 GE :HEA Type Relaye i
SUDMARY bSystem Control. (SC) had notified Stone & Webster Engineering Corporation
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. (SWEC) on.. December,2,1983, thati a particular group of General Electric
'(CE) HEA type. lock-out relays had a tendency to misoperate under cert ain conditions. ~ These relays were manufactured between September 1980 and
' August 1983- (with corresponding date codes of KS, LS, MS, _ AT through MT, f
. AU - through MU, and AW through HW).
SC indicated that Beaver Valley 93
' Power Station' Unit 2 '(BVPS-2) h ad been supplied relays of this type
' for' auxiliary panels ' PNL*REL-241, PNL*REL-249 PNL*REL-251, and PNL*REL-
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259 - under purchase order 2BV-731.
IMMEDIATE~ ACTION TAKEN BVPS-2 directed SWEC.to investigate 4 ether any Class IE equipment for J BVPS-2 'used HEA relays manufactured during the period in question. SWEC
' was L ins truct ed ; tn follow the corrective action as recommended by GE for i
-any potent tal problem with. any ques tionable HEA relays. identified at SWEC was also instructed to notify BVPS-2 of their findings and 1
'BVPS-2.
the action taken. L Mr. E. F. Kurtz, Jr., Manager of Regulatory Af fairs,
BVPS-2,' notified Mr. Lowell Tripp, NRC Region I, of a potential report-able significant deficiency on January 27, 1984.
' DESCRIPTION OF THE PROBLEM _
GE HEA ' type relay misoperated when the panel door, on s ich it was
' mounted,1 was closed.
. GE. has ' repo rt ed that a des ign ch ange, sich r
increased - theD relays; capability to operate at reduced vo lt ages has
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- caused ~ a limited nunber of these relays to malfunction due ta shocks or g
. These relays 'were manufactured between September -1980 and vibration.
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. August ' 1983 with date codes of KS, LS, - MS, AT ' through MT, AU through MU and AW. thr oughl HW. -CE recommends. that. a' check to determine the force applied - at the amature should be made. - If the force is determined to be fless than 500 grams or 1.1 lbs, the relay'should be considered out of
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- s peci fication.
IANALYSIS OF SAFETY IMPLICATION JIf these relays 'should malfunction, this may result -in problems with the 1-trans fer of. control' from ' the Main Control Board to the Alternate and
- Eme rgency Shutdown panels-for ' BVPS-2.
Until 'the tes t ing pr ogram discussed below is conducted to determine ~ whether or not the BVPS-2 HEA relays meet the acceptance criteria. there is no ; evidence of a report able condition,- at this time.-
P CORRECTIVE ACTION TO REMEDY THE PROBLEM GE has developed a field test procedure which will enable site personnel t o. tes t :the HEA' relays, - d ich have been delivered, for exces sive J
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vibration sens it ivity.
Those relays dtich do not meet the ac cep t ance L criteria will be replaced.
ADDITIONAL REPORTS
.It is expected that the above tes ting program will be canpleted and an additional report submitted to the NRC, Region I, by June 15, 1984.
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