ML19275A136

LER 79-002/03L-1 on 790102:main Steam Valves 106 & 106A Failed to Open,Resulting in Auxiliary Feed Pump Afp 1-1 Being Taken Out of Operation.Caused by Dirt Buildup on Valve Stems as Result of New Const

ML19275A136
Person / Time
Site:	Davis Besse
Issue date:	01/29/1979
From:	Oneill J TOLEDO EDISON CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
Shared Package
ML19275A135	List: ML19275A134 ML19275A136
References
LER-79-002-03L, LER-79-2-3L, NUDOCS 7908310425
Download: ML19275A136 (1)

Text

U. S. NUCLE AR REGUL ATORY COMMISSION NRC FORM 366 (7 77)

' LICENSEE EVENT REPORT CONTROL BLOCK: l l l l l l l (PLEASE PRINT OR TYPE ALL REQUIRED INFORMATION) i e l0 l1l l Ol Hl Dl Bl Sl 1l@l 0l 0l -l 0l 0l Nl Pl F l -! 0l 25 3 l@l 26 4 l LICENSE 1l 1l TYPE 1l JO 1l@l l

57 CAT 58 l@

14 15 LICENSE NUMBER 7 8 9 LICENSEE CODE CON'T o

3[gC " l Llgl 0l 5 l 0l -l 0l 3 l 4 ] 6 68Ql069l1 l0EVENT l2 DATE l 7 l 9 @] O l 1 REPORT l 2 DATE 9l7 9l@

1 74 75 80 7 8 60 61 DOCKET NUMBER EVENT DESCRIPTION AND PROBABLE CONSEQ'JENCES h l o 12 l l On 1/2/79, during surveillance testing, valves Main Steam (MS) 106 and 106A failed to (

l o l a l l open.

At 0610 hours0.00706 days <br />0.169 hours <br />0.00101 weeks <br />2.32105e-4 months <br />, Auxiliary Feed Pump (AFP) 1-1 was declared inoperable. The uniq o 4 l was placed in the Action Statement of Technical Specification (TS) 3.7.1.2. This re- [

] o i s l l quires the one inoperable pump be repaired within 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> or be in Hot Shutdown with1 l

l o is l l in the next 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br />. The valves were repaired and AFP l-1 was declared operable.

There was no danger to ]

l o l 7 l l The unit was removed from the Action Statement of TS 3.7.1.2.

the health and safety of the public or unit personnel. (NF-33-79-03) l 80 Lo J a J l S BCO E COMPONENT CODE SUBC DE SU E OE CODE

_1lQ lC l Hj@ y@ l X l@ lV l A l L lV j E lX @ {@ y@

12 13 18 19 20 8 9 to 13 REVIS80N SEQUE NTI AL OCCU R R ENCE REPORT REPORT *JO. CODE TYPE NO.

,_ EVENT YE AR LE R; RO HAP RT l7l9l 8 l 0l 0l 2l26 l/l 0 l3 l lL l [ _-j 31 l1l 32 gUI 23 24 27 28 29 30 21 22 FOR bub. SUPPLIE MA F CTURER HOURS 22 SS IT O KEf W @[Zl@

A ON oN PLANT W h IZlh MET 37 010l0lG)l40 [g 41 Wg 42 l3Al@

4 lV l0 l8 l547@

44 33 34_. 35 36 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS h l i l 0 l l Failure of valves MS106 and MS106A to operate was attributed to a buildup of dirt on l, j i l the valve stems. The dirt buildup was a result of construction activities associated

,,,,,lwith the installation of a new security system. The valve stems were cleaned and valve The valves were tested satisf actorily. ST 5071.01 was completed g l MS106 was greased.

, , l and AFP l-1 was declared operable at 1500 hours0.0174 days <br />0.417 hours <br />0.00248 weeks <br />5.7075e-4 months <br /> on 1/2/79. 80 7 8 9 OTHER STATUS DiSCOV RY D!SCOVERY DESCRIPTION ST S  % POWER l

i s l El@ 0 l 8 l 3 l@l NA l l B l@l Surveillance Test ACTIVITY CO TENT LOCATION OF RELEASE AMOUNT oF ACTIVITY NA l NA l 1 6 RELE ASE@D

• ' ' OF RELEASE @ll PERSONNEL EXPOS ES NUMBER TYPE DESCRIPTION l

8 I OI 0101@l zl@l NA -

PERSoNNE t imu'4 ES NUveER DESCRIP TION

../

l 1 s 8 9 l0l0l0l@l NA 11 12 80 7

LOSS OF OR DAMAGE TO FACILITY Q [,,,/ 2' 3' TYPE DESCRIPTION v -908310 4

/

l 7

i 9 8 9 J @l 10 NA NRC USE ONLY ,

ISSUE E l N,f@l DESCRIPTION NA l lllll llll ll}

68 69 80. g 7 8 9 10 John O'Neill 419-259-5000, Ext. 2 9. o

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