05000368/LER-1980-050-03, /03X-2:on 800717,0804 & 29,while Testing Steam Driven Emergency Feedwater Pump 2P7A,turbine Driver 2k3 Tripped on Overspeed.Cause Appears Related to Hydraulic Control Problem During Initial Start of 48-h Idle Turbine

/03X-2:on 800717,0804 & 29,while Testing Steam Driven Emergency Feedwater Pump 2P7A,turbine Driver 2k3 Tripped on Overspeed.Cause Appears Related to Hydraulic Control Problem During Initial Start of 48-h Idle Turbine

ML19338F197
Person / Time
Site:	Arkansas Nuclear
Issue date:	09/29/1980
From:	Shively C ARKANSAS POWER & LIGHT CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
Shared Package
ML19338F188	List:
References
LER-80-050-03X, LER-80-50-3X, NUDOCS 8010070622
Download: ML19338F197 (1)

LER-1980-050, /03X-2:on 800717,0804 & 29,while Testing Steam Driven Emergency Feedwater Pump 2P7A,turbine Driver 2k3 Tripped on Overspeed.Cause Appears Related to Hydraulic Control Problem During Initial Start of 48-h Idle Turbine

Event date:
Report date:
3681980050R03 - NRC Website

text

i e

w' UPDATE REPORT - PREVIOUS REPORT DATE 8/15/80 NRC FORM 364 U. 5. NUCLE AR REGULATORY COMMISSION (7 778 LICENSEE EVENT REPORT EXHIBIT A CONTSOb 5LOCAc-l l l l l l l (PLEASE PRINT OR TYPE ALL REQUIRED INFORMATION) 1 O

l AlR l Al Nl 0 l, lgl 0 l0 l -l0 l0 [ 0l 0l 0 l-l 0 l0 lg l1 l 1 [1 l 1lgl l lg O i 7

8 9 LsCENsEE COOg - 14 iS LICENSE NUMBER 2$

26 LaCLNsE t vPE JO 67CATbe CON'T

",l,uT! LL_)@l0 I s p 10 i 0 is k 10 y3IO i 7 l 11 71 a I aj@l 01912 J.9 la Ic,40J@

O i i

8 to 68 OOCsLET Nutt0En " " 68 69 EVENT DATE 34 75 HE, ORT OATE EVENT DESCRIPTION AND PROBA8LE CONSEQUENCES h j

2 l

i 0" ring Mode 1 epeartien, "ile testing the Stc= Driven E=rgency O 2 i Feedwater Pump, 2P7A, the turbine driver. 2K3. triooed on oversoeed i

O. I on the following dates: 7/17/80, 8/4/80. 8/29/80. The electric I

iO isi i driven Emergency Feedwater Pump & associated valves were verifled i

O 6 l operable. This occurrence is similar to LER's 50-368/79-055.79-072.

I O i I 79-081.79-104. 80-022. 80-030J80-036.

Reoortable oer T.S. 6.9.1.9.b. I IOfalI l

'c$s"

• '$E

• • i$E su'.E sScN>E o

tO s c coucoNENT cOut IT R I w I R I @ l Bj@ (A._.j @ l Tlli h lR li lNI@ LZj@ [Z_j @

p S

9 to st 12 13 in 19 2')

sE O,VE N TI AL OCCUA Rf NC(

RE,OH f RIVIslON LE A>RO EvtNT ytast at ORT'NO.

CODE TYPE NQ N wg 27 28 29 JO Ji 31

_ 41 22 23 24 26 A

N A O

,LA T MET HOURS 22 s8 tT O FOR H

SU PL ER MAN A TURER LEJ@k _J@ LZJ@

LZ.J@

101010101 Lill@

ILJ@

LAj@

I T i ll4171@

23 34 35 36 33 40 el 42 43 44 47 CAUSE DESCR.PTION AND CORRECMVE ACTIONS h m1 The cause of the occurrence aopears to be related to a hydraulic I

Frrr1 I cor.crol problem during the initial start of the turbine after an idle i

i 2 I period in excess of 48 hours5.555556e-4 days <br />0.0133 hours <br />7.936508e-5 weeks <br />1.8264e-5 months <br />.

The Steam Driven EFW Pumo is beina i

[III]I started every 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> to verify operability.

Investiaation is i

I continuina <ith enaineerino and vendor. assistance.

i 4

'5'.'Wis' OT ra status @

~

".'ssM [Aj@lCONTROLROOMINDICATION@

uO E.

0,scOviav ouen.,nO.,

(E.j@ 111n Irml NA l

' 5 l

",Li f, c'#TNr

'2

-OvNT O,crimy @ l a

aittasi@o0,O tOcnONO,Et.sc@

af u.sE L2.J 12._J@l NA l

NA l

i c

' '. so~Nd en,0sv.s "a

Disco,1,0 @

Nuo...

lo I 0l Ol@lZ_J@l NA i i l

, sO Ne't ou'.'ics Ocsca.,TiO-@

a Nu.ca 101 0101@l NA i =

l 7

8 9 tt 12 80 1 E DE R.T O*e 8 [JJ@l NA l

P S 9 10 sut pi, TION NRC USE ONLY t[RI@Of l

NA i eiiiiiiiiiiii

> 0 I

E 9

'O 08 G3 po Chris N. Shively WMb3B NAME OF PREPARER

,,,oy, ;

8910070622