ML18139B214

Updated LER 80-013/03X-1:on 800206,valve HCV-1852A to Tank 1-SI-TK-1A Delayed Closing 30-50 Secs,Resulting in Tank Draining Below Tech Spec Level.Caused by Moisture in Air Lines Feeding Valve Operator.Tank Filled to Tech Spec Level

ML18139B214
Person / Time
Site:	Surry
Issue date:	03/27/1981
From:	WILSON J L VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.)
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML18139B212	List: ML18139B211 ML18139B213 ML18139B214 ML18139B215 ML18139B216
References
LER-80-013-03X, LER-80-13-3X, NUDOCS 8104020630
Download: ML18139B214 (2)

Text

{{#Wiki_filter:N~C l'ORM 366' 'ii-771 ' UPDATE REPORT e LICENSEE EVENT REPORT U.S. NUCLEAR REGULATORY COMMISSION PR~S R~PORT DATE 03-05-80 CONTROL BLOCK;~' __ ...__... __ ..._.....,~ ..... -.!l(!) l 6 CPL.EASE PRINT OR TYPE ALL REQUIREC INFORMATION! IV I A I s l p I s j 1 101 0 l OJ -! Oj 01 01 01 Oj ... , O! 0 l(Dl 4 11111111101 I I© 9 LICENSES COOE 1* 15 I.ICENSc NUMSER . 25 . 26 I.ICENSE TYPE :10 57 CAT 58 CON'i [[EJ 7 6 lU©I o I s l o I o I o I 21 8 Io ICDI o 12 1 o ! 6 1 s la l@Jo I 3 l 2 l 1 j s l 1 10 60 61 COCKET NUMBER 6S 69 EVENT CATE .74 75 REPORT CA,,:: 80 :VENT OESC!=IIPTION ANO PROBASi.E CONSEQUENCES@ . jUnit #1 was at 100% power. Operating personnel were recirculating the accumulator !III] .J tanks prior to obtaining samples. Valve HCV-1852A to tank 1-SI_-TK-lA delayed closing I_ ___ _ (]]7)j30-50 seconds after the operator operated the c~ntrol. This caused the tank to ~_rain [[IIJ 1down to 45% level and reduced the pressure below 600 .PSIG contrary to Tech. Spec. L **-III[) !3.3.A.2. This is reportable in accordance with Tech. Spec. 6.6-.2.b,2. The redundant I_-..... [IIIl 1accumulattl>rs were available, therefore, the safety and health of the public were not* I []J]J affected. 7 8 9 [IIT] ' 8 *SYSTl:M COOE I 8 1 Fl@ 9 10 CAUSE CAUSE COMP, VAi.VE CODE SUBCODE COMPONENT CODE SUBCODE *sueCODE L!.I@ w@ 1 v , A , L , v , E , x ,e , t**1@ 11.J @ 12 13 18 19 . 20 ,, SEQUENTIAL . OCCURRENCE l'IEPORT (.":;\ LE A/RO [:VENT YEAR REPORT NO. CODE TYl'E REPORT ! 8 IO I I I I O *, 1 I 3 I 1 ........ , IO '3 ., .W I I NUMBER 21 22 23 24 26

• 27 28 29 .30 31 ACTION FUTURE EFFECT . SHUTCOWN t::::'i A,,-ACHMENT NPRD-4
• PRIME COMP, . 80-... ---REVISION NO. tl.J :2 COMPONENT MANUFACTURER TAKEN ACTION ON PLANT METHOC MOURS SUBMl,,-EO FORM ~UB. Sl.l"'I.IER
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l~J W 1*0 ! O IO* j O I l..!J@* l.!!J UU@ 33 3S 36 l7 40 41 42 43 '~ ! C I 6 I 3 I 5 I CAUSE OESCAIPTION ANO COAAECTIVE ACTIONS 44 47 [II§] j The cause of this event is believed to be moisture in the air-lines feedine rbe ya]xe [IJJJ .l operator. Subsequent to this event, the valve has been cycled.with satisfactory o::m results. DJI]'L._ _________ .;,_ ____________________ ....._ _____ __ CTEJ 7 8 9 FACILITY '30' STATUS % POWER OTHER STATUS \;:;;:/ iIIIJ.W.11 lo lo l@"-1 _...;N;.;.:.l.:.;.A ___ , a g 10 12 n . 44 ACTIVITY CONTiNT

• IC\ REI.EASED OF RELEASE AMOUNT OF ACTIVITY ~. (ill] w@ LLl@I ' N/A . I , a 9 10 11 44 so METHODOF /,;:;\ DISCOVERY DISC~VERY t1ESCRIPT10N l1LJ1..I

_..;O:;;.p~e:.;r:.,:a;:.t:..O:.r=.-0:.b=s.:.:e.:.rv.:.:;:;a,;;t.:;i~o~n ..... __ ._. -------.....iL ~----80 . .~OCAT1!)N OF REL.EASE 1..I -~N/~A:.__ ______________ ....... 1 .. ,.; .. 80 PERSONNEL EXl'OSURES t,:;:\ NUMBER TYl'E I,;;\ DESCRIPTION IIiil: I O l O I O ,~W\:!11..- ___ ..;;N;.:.;/ A:.;... ___________________ , a g , , 12 ,:i so PERSONNEi.. INJURIES I,;':;\ NUMBER OESCRll'TION~ IITIJ j O i O j O l@ .. 1..*-----------~N/:..;.;A;.._ __________________ a s 11 12

• so LOSS OF OR DAMAGE TO FAc;ILITY

'43"' TYPE CESCRIPTION .EJI) L:f..1{§)1.-_. ____ . ____ ~N~/~A-..;.... ______________________ , a e 10 so PUBLICITY NFIC: USE ONLY ISSUECt,;::\ DESCRIPTION~ JIIII ... W~c.-i __ . ______ N...;/_A......,.. ______________ ~L.1 l I 1 I I 1 I 1 I l 7 B 9 10 . 68 69 ' NAME OF io1:1ep .e. RE"' _..:J:..*=-* ..:L:.:..* _W.::.:i:::l::::s::o;::n=--------------11 ,..0N !::_;:( ... 8_0_4...,) _3....,...57_-_3_1_8_4 ___ _ *. -.~ ' * ' .. ' **-<-.... --~' ***~--*~-~----- ~104020680 -,=,--,.,_. __ .,.p..,. .. -, .-. *-*"'"""""""' ___ ..,,.,, _ __,,_,., _,,., ..... ~; ,,.,,.,,;,,.,.*-*=--.~*--( : .... _,,.,..,,.., .. , :;r=, ..... =,x.*-, --.=::.::: . .-*: ... ** ... -;...~-.' .,.,?'~ ATTACHMENT, PAGE 1 OF 1 SURRY POWER STATION , UNIT 1 DOCKET NO: 50-280 REPORT NO: 80-013/03X-l EVENT DATE: 02-06-80 TITLE OF REPORT: ACCUMULATOR TANK 1-SI-TK-lA LEVEL AND PRESSURE OUT OF SPECIFICATION .. 1. DESCRIPTION OF EVENT: Unit Number One was at a steady state condition at 100 percent power. The Operator was recirculating the accumulator tanks prior to taking samples. The Control Valve, HCV-1852A, to tank 1-SI-TK-lA, apparently stuck in the open position for 30-50 seconds after the operator set the valve to close. This allowed the tank level to drop to approximately 45 percent and the pressure to drop below 600 PSIG. Immediate steps were taken to refill and pressurize the tank. The tank was below the Techincal Specifications ments outlined in 3.3.A.2 for a period of 25 minutes. Paragraph 3.3.B.l permits one accumulator; ,to be isolated for period not bo exceed 4 hours. This event is reportable in accordance with Technical Specification 6.6.2.b.2.

2. PROBABLE CONSEQUENCES AND STATUS OF REDUNDANT SYSTEMS: The redundant accumulators were available, therefore, the health and safety of the public were not affected.

3. CAUSE: The cause of the event is believed to be moisture in the air:lines feeding the valve operator.

Subsequent to this event, the valve had been cycled with factory results. 4. IMMEDIATE CORRECTIVE ACTION: The immediate corrective action* was to restore the tank to Technical Specification limits. 5. SUBSEQUENT CORRECTIVE ACTION: Since the valve has operated satisfactorily since the event, no further action is required. 6

• ACTIONS TAKEN TO PREVENT RECURRENCE:

None required.

7. GENERIC IMPLICATIONS:

There are no generic implications.}}