05000278/LER-1979-038-01, /01T-0:on 791120,during Review of Surveillance Test,Two MSIVs in a Steamline Closed in Times Shorter than Specified in Tech Specs.Caused by Operator Not Recognizing Fast MSIV Closure Time.Operator Procedure Revised

From kanterella
(Redirected from ML19256F351)
Jump to navigation Jump to search
/01T-0:on 791120,during Review of Surveillance Test,Two MSIVs in a Steamline Closed in Times Shorter than Specified in Tech Specs.Caused by Operator Not Recognizing Fast MSIV Closure Time.Operator Procedure Revised
ML19256F351
Person / Time
Site: Peach Bottom Constellation icon.png
Issue date: 12/06/1979
From: Cooney M
PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC
To:
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML19256F347 List:
References
LER-79-038-01T, LER-79-38-1T, NUDOCS 7912180591
Download: ML19256F351 (1)


LER-1979-038, /01T-0:on 791120,during Review of Surveillance Test,Two MSIVs in a Steamline Closed in Times Shorter than Specified in Tech Specs.Caused by Operator Not Recognizing Fast MSIV Closure Time.Operator Procedure Revised
Event date:
Report date:
2781979038R01 - NRC Website

text

Unit 3 LICLNSEE EVEN I REPOH 1 Report No.

3-79-38/3L-0

, cctm ot uloct l 1

l l

l l@

d*LL ASE PWN T oH TYPL AL L RLOUmL U IM OHf.1 AHOW

=

i s

lP l/

P IB SL')_j@l0l0l-10 0l 0l 0l 0I - Ol0l@!4 1

1l1 1 }@L_L_d bi

,o 1

/

3.

LICENSEE CoDL 14 15 uCLNst NUNL H

=>

/6 L ' C L N 5 ti T*PL n'

' ' ' ^ '

cop

  • T 4

E LLJ@l0 I s 1 010-1 012 17 18 lQI, 1, 12 10 i t191Gl112LO_Lc2_i 2_L9JG EVENT DEScH PTioN Ar D PHODA L

S f4CES Review of a curveillance tect completed on 11/19/79 revealed that the 2 l

o

/

o

- ] MSIV'c in the "A" ctecnline closed in timec chorter than cpecified in j

l Tech Spec 3.7 D.'3. Facter clocure than specified incroaces the precoure

_]

o

.i

[ roached during a main cteamline icolation. The average isolation time l

o s

o io l for all h lines wac more than 2.8 cecondo. The trancient analycic chowc I

l no cignificant effecta for a 3 cecond icolation, therefore it is be-1 o

/

[ lieved 2.8 coconds would be within the concorvatica of the analycia.

J o

n 7

g 9 ho LY';1 E V CAULL C A L'.E C O '.' P

,'.M V E COLC COOL LUdCODE LOWuNt N T LOOL wuCLat u ts C O J L I cl Dj@ LAj@ I A l@ l vl Al LI v l 0 l P_j@ Ic l@ l zl @

to o

l ti

'J 1(J 11 17 TJ 1f 19 JJ

' i Gt et Nil A L OCCi:4 Kf NCr HEFONT Hlk 'khh LVLNT YL AH htPOHTNO ux;L fvPL NO O,",'[.';a, g g17 19 I l-1 01 31 81 1/l 0 11 I I Tl l-LO_J jp;

_ 21

'l

?' s

}4 iG

?!

in 26

.IJ 11 G

A: llON J U T UI.E.

L F 1-L C l L H a 11.

A A 1 T A C h*/ t N 1 Nh D 4 PhWL MP 8Lf?h ^ el TA/EN ACilON OT, PLANT

'.l E 1" O J HOUhS 2<

SudUiTTLD FCHM WP SUPPL'(H

AN 4 *f a C l l 'iL H l Gjgl34Bl@

l B l@

[ Zj@

l 01318 9l l Y l@

l Y l@

[I@

lH13lh13l(

JJ

.1%

J/

4 ')

4) 43 44 cAu,c otsanPTion ANo conHccTivt Actions @

l-; g {Pc oucrator performing the tect did not recognize that the closure time l

} for the "A" ESlY'c wac tco fact. Upon diccovery of the recults, reactor l

.; j g power was reduced to 75% and the "A" cteamline isolation valves were j

g g ; closed. The importance of the event hac been strecced to the operator l

,_q g and the applicable procedure hac been reviced to prevent recurrence.

j i

d 9 12 1 l

l M la ii V pg

t li st;Il Or L I A l t r, s 1% /vl 11 Ol6tl iq. l A lie j

lji'.t. U V 4 H Y I H'.L() s t H Y L L',Ci t iP 11(3N I l, E_b] [ Ej@ ( 0{7l $j@[

n/A l

[ B l@l Performine; curveillance test o,

v ii u

(.

4,.

nn ON it N a At TiVII Y a

q E

f t( L L A'.Lil i'l D l i t !' '. L AVGUN1 OF AC Tivi f Y

' ;C A T 10N o r 3,i t ( A S t E, [] LZj (3 L,eZj@

U/A l

1:/A i

4 o

o

.s on,c.:.it i m r.on,

iaanmino(n) r.wo. n

.n EL'l l J 0JS.J@l Z GI n//E I

i v

u no n nu u t iN;u.ot s

. orscus noN Q1)

N esi n dj (S_[0 l 0 J@l N/A wm o 3 9

'y [i\\ l l

'r. o,.,.j,'.. A a fo. ui o, V e c4jf,g gjgg u

i,n o n.u.m o uN U

7_I { Z K'Al U/A i

U t._

a o n,

e com n.o v

.c

.,nc u; a,

e..,v o oeuunnw -

b,d, [i - -

[h) LM_jbl N/A lbOb 2N)iiIUj.Jl!Il}

_e

,/

.f.J.Cooney r

2 io ce..,

ao

( 21 ',) 841-50/0 i

NA*.*L UFPHLPAHLH PnOW.

e 7 012180 SV[