ML18139A942

LER 80-044/03L-0:on 801124,pump 2-SI-P-1A Declared Inoperable Due to Low Resistance.Caused by Connection Box Grounded Out by Rainwater.Box Dried Out,Roof Hatch Repaired & Pump & Motor Tested

ML18139A942
Person / Time
Site:	Surry
Issue date:	12/19/1980
From:	Joshua Wilson VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.)
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML18139A940	List: ML18139A939 ML18139A941 ML18139A942
References
LER-80-044-03L-03, LER-80-44-3L-3, NUDOCS 8012290460
Download: ML18139A942 (2)

Text

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I On November 24, 1980, with Unit No. 2 at 100 percent power, 2-SI-P-lA was declared inoperable due to low resistance*. Thi" s 1* s contrary t T S 3 3 A 6 []JI] LI-----------------------------0 __.__.__. _._.__an_d _i_s_r_e..:..p_o_r_-_

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((EJ able per T. *s. 6.6.2.b(2). The redundant pump was operable. Therefore the health and safety of the public were not affected. IIITJ [ill] [IE] ((I)) 7 8 9 80 SYSTEM CAUSE CAUSE COMP, VALVE CODE CODE SUBCODE COMPONENT CODE SUBCOOE SUBCODE [ill] 7 8 Isl Fl@ 9 10 w@ 12L...z.1@) 13I Mio Ir I al Rix 18I@ 11 w@ w@ 19 20 SEQUENTIAL OCCURRENCE REPORT REVISION

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             ~ REPORT              1 81 01                   I23 I               I a I 4 I 426I                      l27/I         I o I 329I                                              l.=l NUMBER 21           22                               24                                                28 LL.J 30                            31 L.uJ 32 ACTlON FUTURE                     EFFECT             SHUTDOWN                                           ~       ATTACHMENT       NPRD-4                   PRIME COMP.                                      COMPONENT TAKEN      ACTION               ON PLANT              METHOD                             HOURS ~                 SUBMITTED      FOAM :;us.                    SUPPLIER                                MANUFACTURER*

l.JLJ@l.xJ@) 33 34 Lz.J@ 3S Lz.J la la la la I 36 37 40 LYJ@). 41 W 42 ln.J@) 43 I wI I 21.o.J@ 44 47 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS @ I Rain water from a leaking roof batch groirnded out the moto:r' ~ connection box. The o:::IIJ I motor connection box dried out. The pump and motor were tested and returned -to DJ)) I service. The roof hatch was repaired. o::m [JJTI 7 8 9 BO FACILITY '3Q\ METHOD OF (.;'.;\ STATUS  % POWER OTHER STATUS \::::;/ DISCOVERY DISCOVERY DESCRIPTION \:;I tITIJ ~ I 1 1 0 I O l@)I. . . _ _ N.;..../A_ __ , r W@L.I___R:.;:o:;.u::.t::.:1::.:*n::.:e:......::T:..:e:..::s;..::t:___.- - - - - - - - - - ' 8 9 ACTIVITY 10 CONTENT 12 1'3 Q\ 44 4S 46 so RELEASED OF RELEASE AMOUNT OF ACTIVITY ~ LOCATION OF RELEASE [QI] LU@) l2J@I . N/ A N/A. 7 8 9 10 11 44 4S 80 PERSONNEL EXPOSURES ~ NUMBER c;;.. TYPE ~DESCRIPTION [IE] I 01 01 OJ~~L......-------..:.:N.t...:./A;:__ _ _ _..;.__ _..;.._ _ _ _ _ _ _ _ ____. 7 8 9 11 PERSONNEL INJURIES 12 13 t,;:;\ so NUMBER DESCRIPTION6 f2TIJ l O I O IO 7 8 9 11 l@'------,-------....:N~/.;.:.A_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ ___. 12 . 80 LOSS OF OR DAMAGE TO FACILITY '4J' TYPE DESCRIPTION \::::;) ~ ~(S}r........______~ - - - - - = N ~ / = A ~ - - - - ~ - - - - - - - - - - - - - - - - ' 7 a 1:su:i;:~o;;CRIPTION@ IIli] ~e,~__________----:;N.:.i..:.:..A_ _ _ _ _ _ _ ____. l I II II* 1 II I II I ~ 8012290 "I< C) NRC USE ONLY 80"' 8 9 -{\ 10 68 69 80 ; 0 NAME OF PREPARER _ _ _ _....;J:;..;...*. . ;L; ;, , ;, .'_W;,,;,.1;;;.*l;;;.s:;.o;:;.n;;;__ _ _ _ __ PHONE: _ _.(_..8...,.0...,,4u)-3i...5:.L7....;-.31...1l.i..8'

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a*,*. ~ ***- r, ... ATTACHMENT 1 e e SURRY POWER STATION, UNIT 2 DOCKET NO: 50-281 REfOR.! NO: 80-044/03L-0 EVENT DATE: 11-24-80 SUBJECT 2-SI-P-lA INOPERABLE

1. Description of Event:

On 24 November 1980, with Unit No. 2 at 100% power, rain water from a heavy rain storm was observed leaking th~ough a roof hatch on 2-SI-P-lA. Operability of the redundant pump (2-SI-P-lB) was verified by PT 18.1 and 2- SI-P-lA was removed from service. Investigation revealed that the motor.connection was grounded . . This is contra1:y to Technical Specification 3.3.A.6 *and-* is reportable* as per Tech. Spec. 6.6.2.b(2).

2. Probable Consequences and Status of Redundant Equipment:

The low head Safety Injection :Bumps provide*. cooling and makeup water to.2'the reactor during the LOCA. The redundant pump*(2-SI-P-1B) was operable and would have functioned as designed. 2-SI-P-lA was returned to service in 12 hours, well within the 24 hours allowed. Therefore, the health and safety of the public were not affected.

3. Cause:

Rain water from a leaking roof hatch above the pump leaked into the motor con-nection box and created a ground.

4. Immediate Corrective Action:

The redundant pump (2-SI-P-lB) was verified operable as required by Technical Specification 3.3.B.3. Water was removed from the connection box and heat was applied.

5. Subsequent Corrective Action:

The motor connection box was dried using temporary electrical heaters. Sub-sequently the pump and motor were verified operable and returned to service.

6. Action Taken to Prevent Recurrance -

The leaking roof hatch was repaired and.inspected during a subsequent rain storm.

7. Generic Implications:

None.}}