ML20198L745
| ML20198L745 | |
| Person / Time | |
|---|---|
| Site: | Beaver Valley |
| Issue date: | 05/15/1986 |
| From: | Carey J DUQUESNE LIGHT CO. |
| To: | Murley T NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| References | |
| 2NRC-6-049, 2NRC-6-49, 86-04, 86-4, NUDOCS 8606040385 | |
| Download: ML20198L745 (3) | |
Text
"
i
}Vs
'Af DuquesneLigit we a y No. 2 Unit Project Organtratton
~
P.O. Som 328 Telecopy (412) 643-5200 Shippingport. PA 15077 Ent. 160 May 15, 1986 United States Nuclear Regulatory Commission Region I 631 Park Avenue King of Prussia, PA 19406 ATTENTION:
Dr. Thomas E. Murley Administrator
SUBJECT:
Beaver Valley Power Station - Unit No. 2 Docket No. 50-412 Unqualified Wire In Limitorque Actuators Potential Significant Deficiency Report 86-04 Gentlemen:
This Potentially Reportable Significant Deficiency Report is being submitted pursuant to the requirements of 10CFR50.55(e).
It is anticipated that an additional report will be submitted by October 15, 1986.
DUQUESNE LIGHT COMPANY 1
By VicePresidenty J. J.Marey RJW/ijr Attachment AR/? AR )
v cc: Mr. P. Tam, Project Manager (w/a)
Mr. J. M. Taylor, Director (3) (w/a)
Mr. W. Troskoski, Sr. Resident Inspector (w/a)
Mr. L. Prividy, NRC Resident Inspector (w/a)
INP0 Records Center (w/a)
NPC Document Control Desk (w/a) 8606040385 860515 PDR ADOCK 05000412 I
S PDR w
b
United States Nuclear Regulatory Cannission Dr. Thomas E. Murley Potential Significant Deficiency Report 86-04 Page 2 I
I RJW/ijr NR/ SIGN /DEF/RPT bcc: J. J. Carey
- w/ attachment w/ attachment C. E. Ewing T. P. Noonan
- w/ attachment J. A. Hultz
- w/ attachment J. P. Thomas
- w/ attachment w/ attachment R. Coupland C. O. Richardson, SWEC (5)(3)
- w/ attachment A. A. Dasenbrock, SWEC
- w/ attachment i
~
R. Sacco,SWEC
- w/ attachment R. Anstoy,5WEC
- w/ attachment w/ attachment R. Wittschen, SWEC i
J. Sutton, SWEC
- w/ attachment
- 8. Hall (W)
- w/ attachment BV-2-NCD-TEG/ Phase II PUC Audit Distribution SDR 86-04 (4)
- w/ attachment w/ attachment NCD File w/ attachment SDR 86-04 File i
I I
f I
i 9
'L
,_-,.,.,,_,,,..__,__r._
.-__,--_,r.,,,,_,,
__.v,,_._
.y,,,..
r,_,_,.
-_r
.m.,
w_.____,
ATTACHMENT 1.
SUMMARY
During an ongoing inspection of Category I Motor-0perated Valves (M0Vs), wiring which appears to lack appropriate qualification was discovered in five (5) M0V actuators.
2.
Immediate Action Taken Nonconformance and Disposition Reports were issued to inspect all Category I Limitorque actuators.
DLC letter 2NRC-6-027 (dated 3/20/86) provided initial written notification to Region I.
3.
Description of Deficiency To date over one hundred actuators have been inspected.
Wiring for i
which environmental qualification cannot be verified has been identified in approximately 80% of these actuators. The subject wiring is used in the control of the actuators, specifically the torque switch and the limit switch wiring.
4.
Analysis of Safety Implication Limitorque has been requested to provide the basis for the qualification and use of the ITT and Kalas wires.
The affected valves are located in various safety-related systems.
Preliminary review indicates that failure of these wires could adversely affect the ability of associated valves to perform their intended safety functions.
5.
Corrective Action To Resolve the Deficiency Approximately 80% of the wires with uncertain qualification have been replaced. The remaining inspections and replacements are continuing.
6.
Additional Report An additional report is expected by October 15, 1986.