05000280/LER-2076-007, Re Refueling Water Chemical Addition Valve MOV-CS-202B
| ML19105A158 | |
| Person / Time | |
|---|---|
| Site: | Surry  |
| Issue date: | 07/07/1976 |
| From: | Stallings C Virginia Electric & Power Co (VEPCO) |
| To: | Moseley N NRC/RGN-II |
| References | |
| Serial No. 119 LER 1976-007-00 | |
| Download: ML19105A158 (3) | |
| Event date: | |
|---|---|
| Report date: | |
| 2802076007R00 - NRC Website | |
text
VIRGINIA ELECTRIC AND POWER COMPANY RIOHMOND, VIRGINIA 2 3 2 61 July* 7,
- 1976' Mr. Norman c. Moseley, Director Office of Inspection and Enforcement u. s. Nuclear Regulatory Cormnission Region II - Suite 818 230 Peachtree Street, Northwest Atlanta, Georgia 30303
Dear Mr. Moseley:
Serial No. 119 PO&!J./ALH:jlf 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-S2-76-07.
The substance of this report has been reviewed by the Station Nuclear Safety and Operating Cormnittee and will be placed on the agenda for the next meeting of the System Nuclear Safety and Operating Cormnittee.
Enclosure Very truly yours,
- tJ. m. 0/,u.t.,;.r c. M. Stallings Vice President-Power Supply and Production Operations cc:
Mr. Robert w. Reid, Chief (40 copies)
Operating Reactors Branch 4
REPORT CONTROL BLOCK: l 1
'jENSEE EVENT I I I I I.
[PLEAS.RINT ALL REQUIRED INFORMATIOI\\!.)
LICENSEE NAME
@r:Jlv IAI slP!s!2I 7
8 9 14 CATEGORY REPORT TYPE 6
LICENSE NUMBER I o I o 1-1 o I o I o I o I o 1-1 oLJ 15 25 REPORT SOURCE DOCKET NUMBER LICENSE TYPE 14 ! 1 I 1 ! 1 I ol 26 30 EVENT DATE EVENT TYPE Io I 3 I 31 32 REPORT DATE
@E]coN'T I MI I I uJ w I o I s I o 1-1 o I 2 ! sl 1 I !0!6!01717161 I o I 71 o I 2 I 7 I 6 I 7
8 57 58 59 60 61 68 69 74 75 80 EVENT DESCRIPTION *
(§Jill I During the perfonnance of Performance Test 19.1 (Refueling Water Storage Taruc 7
8 9 Chemical]
BO
@Ifil I Addition Tank Test), it was found 7
8 9 that the Refueling Water Chemical Addition Valve I
@8 I MOV-CS-202B would not open beyond the mid-position electrically.
7 8 9 80 This is a violation j 80
~
[ of Technical Specification 7
8 9 3c4oAa5 and reportable under Technical Specification J
- -..F.J
&!§] I 6.6.2.b.
(USRE"".S2-76-07) 7 8 9 SYSTEM CODE
CAUSE
CODE COMPONENT CODE
@1?J I zl zl w I z I z I z I zl z I z I 7
8 9 10 11 12 17 CAUSE DESCRIPTION PRIME COMPONENT SUPPLIER w
43 COMPONENT MANUFACTURER I LI 21 o*I o!
44 47 VIOLATION LRJ 48
~ I Manual operability of Refueling Water Chemical Addition Valve MOV-CS-202B 7
8 9 80 80 was immedi-J BO I
rn I ately verified when it was found that it would not operate electrically. The redun-7 8 9 80
!1lol
._l _d_a_n_t_l-=-y_i_n_s_ta~led Refueling Water Chemical Addition Valve, MOV-CS-202A pro.Yi.ck~
7 8 9 80 EE 7
B rn 7
8 FACILITY STATUS
% POWER lQJ Io I ol 9
10 FORM OF ACTIVITY CONTENT*
RELEASED OF RELEASE LlJ w-1 9
10 11 PERSONNEL EXPOSURES ol 12 N/A OTHER STATUS METHOD OF DISCOVERY
~--~' lJJ N/A 13 44 45 AMOUNT OF ACTIVITY 44 45 NUMBER TYPE
DESCRIPTION
DISCOVERY DESCRIPTION I Cycling Valve IAW Performance Test 46 80 LOCATION OF RELEO.SE N/A 80 [i:@) l o l o I 01 w 7
8 9 11 12 LJ/!..:cA~-------------------------~
13 60 PERSONNEL INJURIES NUMBER
DESCRIPTION
EE Io I o ! oj 1,__ __
N:.:.!/...::A:.__ _______________________
~
7 8 9 11 12 BO OFFSITE CONSEQUENCES [ill]
N/A 7
B 9 80 LOSS OR DAMAGE TO FACILITY D}J j~EI Lo~~~/:.::~;P-T1-0N--~----------------------------------_J 7
8 9 10 80 PUBLICITY El?]
N/A 7
8 9
_J 80 ADDITIONAL FACTORS
~
!The health and safety of the public were not affected by this event because a redu~-
7 B g 80
~
!dant valve would have opened to allow proper chemical addition had it been necessary. I 7
8 9 BO NAME:
T
- L. Baucom PHONE: (804) 357-318!+
GPO '881-667
e CAUSE DESCRIPTION (CONTINUED) parallel flow path to assure chemical addition to the R~fueling Water Storage Tank.
This valve was proven electrically operable irmnediately prior to the occurrence during the same performance test.
It was found that an out of position return spring in the torque switch would not
. allow cam operated contacts to reclose once the switch was opened.
The ~witch was replaced and the valve retested satisfactorily.
Most of the containment spray sys-tem motor operated 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 Corpor-ation, Type SMB-000.