05000346/LER-1979-002-03, /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

/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: 05000346/LER-1979-002, Forwards LER 79-002/03L-1 05000346/LER-1979-002-03, /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 ML19275A134
References
LER-79-002-03L, LER-79-2-3L, NUDOCS 7908310425
Download: ML19275A136 (1)

LER-1979-002, /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

Event date:
Report date:
3461979002R03 - NRC Website

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 3 l@l 4 l 1l 1l 1l 1l@l l

l@

7 8 9 LICENSEE CODE 14 15 LICENSE NUMBER 25 26 LICENSE TYPE JO 57 CAT 58 3[gC l Llgl 0l 5 l 0l -l 0l 3 l 4 ] 6 Ql0 l1 l0 l2 l 7 l 9 @] O l 1 l 2 9l7 9l@

CON'T o

1 7

8 60 61 DOCKET NUMBER 68 69 EVENT DATE 74 75 REPORT DATE 80 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 (

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 l o l a l l open.

l was placed in the Action Statement of Technical Specification (TS) 3.7.1.2.

This re- [

o 4

] 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 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.

l 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 Lo J a J l 80 OE CODE S BCO E COMPONENT CODE SUBC DE SU E

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

8 9

to 13 12 13 18 19 20 REVIS80N SEQUE NTI AL OCCU R R ENCE REPORT

,_ EVENT YE AR REPORT *JO.

CODE TYPE NO.

l7l9l 8

l 0l 0l 2l l/l 0 l3 l lL l

[ _-j l1l LE R; RO HAP RT 21 22 23 24 26 27 28 29 30 31 32 gUI KEf A

ON oN PLANT MET HOURS 22 SS IT O FOR bub.

SUPPLIE MA F CTURER W @[Zl@ W h IZlh 010l0lG)l [g

Wg l3Al@ lV l0 l8 l5 @

33 34_.

35 36 37 40 41 42 4

44 47 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 The dirt buildup was a result of construction activities associated the valve stems.

l, j i l The valve stems were cleaned and valve

,,,,,lwith the installation of a new security system.

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 ST S

% POWER OTHER STATUS DiSCOV RY D!SCOVERY DESCRIPTION l El@

0 l 8 l 3 l@l NA l

l B l@l Surveillance Test l

i s ACTIVITY CO TENT LOCATION OF RELEASE AMOUNT oF ACTIVITY NA l

l NA l

RELE ASE@D OF RELEASE @l 1 6 PERSONNEL EXPOS ES NUMBER TYPE

DESCRIPTION

l 8 I OI 0101@l zl@l NA PERSoNNE t imu'4 ES

../

NUveER DESCRIP TION l

l0l0l0l@l NA 1 s 80

[,,,/ 2' 3' 7

8 9 11 12 LOSS OF OR DAMAGE TO FACILITY Q

- 908310

/

l TYPE

DESCRIPTION

v 4

J @l NA i 9 7

8 9 10 NRC USE ONLY NA l

lllll llll ll}

E l N,f@l DESCRIPTION ISSUE 68 69

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

8 9 10