05000280/LER-2076-008, Re Electronically Non-Operable Condenser Outlet Valve MOV-CW-200B
| ML19105A154 | |
| Person / Time | |
|---|---|
| Site: | Surry  |
| Issue date: | 07/13/1976 |
| From: | Stallings C Virginia Electric & Power Co (VEPCO) |
| To: | Moseley N NRC/RGN-II |
| References | |
| Serial No. 121 LER 1976-008-00 | |
| Download: ML19105A154 (3) | |
| Event date: | |
|---|---|
| Report date: | |
| 2802076008R00 - NRC Website | |
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e VIRGINIA ELECTRIC AND POWER COMPANY RICHMOND, VIRGINIA 23261
.July 13,
- 1976 Mr. Norman c. Moseley, Director Office of Inspection and Enforcement u. s. Nuclear Regulatory Connnission Region II - Suite '818 230 Peachtree Street, Northwest Atlanta, Georgia 30303'
Dear Mr. Moseley:
Serial No. 121 POM!I./ ALH: j lf Docket No.
50-281 License No. DPR-37 Pursuant to Surry Power Station Technical Specification 6.6.2, the Virginia Electric and Power Company hereby submits a copy of Reportable Occur-rence No. USRE-S2-76-08.
The substance of this report has been reviewed by the Station Nuclear Safety and Operating Committee and will be placed on the agenda for the next meeting of the System Nuclear Safety and Operating Committee.
Enclosure Very truly yours, C. M. S:tal lings Vice President-Power Supply and Production Operations cc:
Mr. Robert w. Reid, Chief (40 copies)
Operating Reactors Branch 4
CONTROL BLOCK: I 1
'CENSEE EVENT REPD,RT e I I I I I [PLEASE PAINT ALL REQUIRED INFORMATION]
LICENSEE NAME 6
LICENSE NUMBER LICENSE TYPE EVENT TYPE
@El Iv I A Is I PI s I 2 I I o I o 1-1 o I o I o I o I o 1 -1 o.1QJ l411l1l1lol I o I 3 I 7
8 9 14 15 25 26 30 31 32 CATEGORY
@E]coN'T I Pl o I 7
8 57 58 REPORT TYPE w 59 EVENT DESCRIPTION' REPORT SOURCE w
60 DOCKET NUMBER EVENT DATE REPORT DATE I ol s Io 1-1 o I 2 I s I 1 I I o I 6 I 1 14 I zl 6 I 101110!6!7!6!
61 68 69 74 75 80
@lg] !During nonnal operations~ it was found that condenser outlet valve MOV-CW-200B would 7
8 9 80
!ol31 I not operate electrically. This is in violation of Technical Specification 3. 7, and re-I 7
8 9 80 jol41 I portable under Technical Specification 6.6.2.b., (USRE-82-76-08)
I 7
8 9 80
~
7 8 9 10151 7
8 9 SYSTEM COOE
@0 !HI FI 7
8 9 10
CAUSE
CODE l!J 11 CAUSE DESCRIPTION COMPONENT COD~
Iv I A I 1 I v I o I PI 12 17 PRIME COMPONENT SUPPLIER
~
43 COMPONENT MANUFACTURER IL I 2 IO IO I 44 47 80 80 VIOLATION w
48 jo!0j I Condenser outlet valve MOV-CW-200B was throttled when it was found that it would not 7
8 9 jols! joperate electrically.
Manual operability was verified and a station 7
8 9 rr:@I. I signed to standby and position the valve as necessary. The condenser 7
8 9 FACILITY 80 operator was as-I 80 inlet (continued) I 80 STATUS
% POWER OTHER STATUS METHOD OF DISCOVERY DISCOVERY DESCRIPTION EE]
w jo I a I 9 N/A w
I N/A 7
8 9
10 12 13 44 45 46 80 FORM OF I
ACTIVITY CONTENT rn RELEASED OF (E~jSE I AMOUNT OF ACTIVITY w
N/A LOCATION OF RELEASE N/A 7
8 9
10 11 44 45 80 PERSONNEL EXPOSURES NUMBER TYPE
DESCRIPTION
~ lo jo I oj 7
8 9 11 ~ i......:N~A:.......-------------------------,-----,~
12 13 80 PERS.ONNEL INJURIES NUMBER
DESCRIPTION
E8., 010 I () I.___...:.N:.!..:/A:,:__ _________
........... ____________________ =!
1. a s 11 *. 1.2 00 OFFSITE. CONSEQUENCES Elli N/A' 7
8 9 80 LOSS OR DAMAGE TO FACILITY TYPE
DESCRIPTION
[I§)~ L-=:N~/A~---------------------------~
7 8 9 10 80 PUBLICITY [fill N/ A 7
8 9 80 ADDITIONAL FACTORS
~
j.The health and safety of the public were not affected by this occurrence because the 7
8 9 80 ITJfil jredundant valve would have closed as required and maintained the required canal level. j 7
8 9 80 NAME:~~T~.__;;;:L~--B~a~u~c~o~*m~~~~~~~~~~~~~~-PHONE:(804) 357-3184 GPO
- 8 81
- 6 6 7
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CAUSE DESCRIPTION (CONTINUED) valve, MOV-CW-206B, provides additional assurance that the proper intake canal level will be maintained.
An investigation revealed that the valve qperator wonn shaft tripper cam had broken off.
Thus the motor shaft was not engaged and the valve would not operate electrically.
The tripper cam was replaced and the valve tested and returned to service.
All con-denser inlet and outlet valves have similar valve operators; however, since this is the first known valve operator failure of this type no further corrective action is deemed necessary at this time.
The valve operators were manufactured by Limitorque Corporation, ~ype SMB-2.