ML19105A210

LER 1975-015-00 for Surry 2 Re Closure of Boron Injection Tank Recirculation Valves TV-2884A, B, C

ML19105A210
Person / Time
Site:	Surry
Issue date:	08/18/1975
From:	Stallings C Virginia Electric & Power Co (VEPCO)
To:	Moseley N NRC/RGN-II
References
Serial No. 658 LER 1975-015-00
Download: ML19105A210 (3)

Text

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VIRGINIA ELECTRIC .A.ND POWER COMPANY RIOHMOND, VIRGINIA 23261 August 18, 197 5*

r1REG'ULATORY DOCKET FILE COPY Mr. Norman C. Moseley, Director Serial No, 658 Office of Inspection and Enforcement PO&M/JTB:clw United States Nuclear Regulatory Commission Region II - Suite.818 Docket No. 50-281 230 Peachtree Street, Northwest License No. DPR-37 Atlanta, Georgia 30303

Dear Mr. Moseley:

Pursuant to Surry Power Station Technical Specification 6.6.B.l, the Virginia Electric and Power Company hereby submits forty (40) copies of Abnormal Occurrence Report No. AO-S2-75-15.

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.

Very truly yours,

~.Jl?/t }&;-Zt~.;-,. _/

C. M. Stallings 1

Vice President-Power Supply and Production Operations Enclosures 40 copies of Ao-s2...,75..,15 cc: Mr. K. R. Goller

LICENSEE EVENT REPORT AO-S2-7S-1S

... CO NTAO L BLOCK: .._l___,_ _;,e_.,. ------....L.....--l [Ple.e PRINT ALL REQ~IRED INFORMATIOI\JJ 1 6 LICENSEE LICENSE EVENT NAME LICENSE NUMBER TYPE TYPE

~Iv 7 8 9 I A I S I 'p 'I S I* 214I lo I oI*- Io I o I o I o I o 1-1 o Io 15 25 I 1411 !111101 26 30 I31O I 132I REPORT REPORT CATEGORY TYPE. SOURCE DOCKET NUMBER EVENT DATE REPORT DATE

@El CON'T 7

• 8 IP 57 IO 58 I w w 59 60 lo Is Io 1-1 o I 2 I s 11 I 6,1 68

!olslol7l7ISI 69 74 I oI 8 j 75 11 8 17 1s I 80 EVENT DESCRIPTION

@§ !During normal steady-state operation, the boron injection tank recirculation valves I 7 8 9 80

~ jTV-2884A, B, C were found closed. These valves are held open by air pressure and 7 8 9 80 I

[0141 I close with a loss of air. The air supply to these valves was inadve~tently restricted J 7 8 9 80

~ I for a period of 24 minutes. The above is contrary to Technical Specification 3.2.6. _J 7 8 9 80

&@I AO-S2-7S-1S 7 8 9 ., PRIME 80 SYSTEM CAUSE COMPONENT COMPONENT CODE CODE COMPONENT CODE SUPPLIER MANUFACTURER VIOLATION

@0 Isl10 HI LL.I IV j A I L j V j O j Pj ~ jcj6j3JSI L:J 7 8 9 11 12 17 43 44 47 48 CAUSE DESCRIPTION

~ I Copes-Vulcan model 129209R valve operator closed boron injection tank recirculation I 7 8 9 80

!ojel I valves for a period ,of 24 minutes due to a partial loss of air supply. Air supply I

7 8 9 80

[i@j j valve 2-IA-451 was found partially throttled-believed to have resulted from (con't)

J 7 8 9 80 FACILITY METHOD OF STATUS  % POWER OTHER STATUS DISCOVERY DISCOVERY DESCRIPTION EEi8 Lu Io I 9Jo 12I IN/A ~I.__N_/_A_ _ _ _ _ _ _ _ _ _,_J 7 9 10 13 44 45 46 BO FORM OF ACTIVITY CONTENT OF RELEASE rn RELEASED AMOUNT OF ACTIVITY LOCATION OF RELEASE 7 8

~

g

~10 I11 N/A 44 45 N/A 80 PERSONNEL EXPOSURES NUMBER TYPE DESCRIPTION

~8 1° I 1° 11I 0 ~ I N/A 7 9 12 13 80 PERSONNEL INJURIES NUMBER DESCRIPTION EE]

7 8 lo !o 9

!ol11 N/A 1';::2----------------------------------------8..JO OFFSITE CONSEQUENCES

.l.illl I N/ A 7 8 9 80 LOSS OR DAMAGE TO FACILITY TYPE DESCRIPTION

~8 7

k_j 9 1NA 0:;---~-----------------------------------------__JBO PUBLICITY

[ili] NA 7 8 9 80 ADDITIONAL FACTORS Eifil I N/ A 7 8 9 80 7

[ili]8 9L - - - - - ' - - - - - - - - - - - - - - - - - - - - - - ~ 80 E.* M, Sweeney, Jr. (804) 357 3184 N A M E : - - . . . , . . : , . - - - - - - - - - - - - - - - - - PHONE: -

GPO es1, 667

r e e CAUSE DESCRiiTION (con't) vibration. This reduced the air flow to the air header supplying several air operated valves including TV-2884A, B, C. Cycling some of the valves supplied from this header resulted in a reduction of air pressure because the restricted supply could not keep up with the demand. This reduced air pressure caused TV-2884A, B, C to close.

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