05000369/LER-1981-136-01, /01T-0:on 810825,during Test of Turbine Driven Auxiliary Feedwater Pump,Suction Piping Was Overpressurized When Pump Tripped.Caused by Lack of Protection for Auxiliary Feedwater Pump Suction Piping.Damaged Instruments Checke

/01T-0:on 810825,during Test of Turbine Driven Auxiliary Feedwater Pump,Suction Piping Was Overpressurized When Pump Tripped.Caused by Lack of Protection for Auxiliary Feedwater Pump Suction Piping.Damaged Instruments Checked

ML20010G889
Person / Time
Site:	McGuire
Issue date:	09/08/1981
From:	Nardoci P DUKE POWER CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML20010G883	List: 05000369/LER-1981-136, Forwards LER 81-136/01T-0.Detailed Event Analysis Encl 05000369/LER-1981-136-01, /01T-0:on 810825,during Test of Turbine Driven Auxiliary Feedwater Pump,Suction Piping Was Overpressurized When Pump Tripped.Caused by Lack of Protection for Auxiliary Feedwater Pump Suction Piping.Damaged Instruments Checke
References
LER-81-136-01T, LER-81-136-1T, NUDOCS 8109220629
Download: ML20010G889 (1)

LER-1981-136, /01T-0:on 810825,during Test of Turbine Driven Auxiliary Feedwater Pump,Suction Piping Was Overpressurized When Pump Tripped.Caused by Lack of Protection for Auxiliary Feedwater Pump Suction Piping.Damaged Instruments Checked

Event date:
Report date:
3691981136R01 - NRC Website

text

e

.e l

i 4ac 7 cam.*64 U.S.NUCLEAA aEcW.A70aY C amaess;Cse (1 711 IJCENSEE EVENT REPCRT EXHIBIT A c=ntset atoex; I I

I I

I I tet.zAss Paiwr em rvet ALL necuento suecauAficN i

Io 1 i l l N I Cf Ml G l S l lig(is 0l 0 l-10 l 0 l 0 l 010 l -l 0 i Org{ 4 l l j 1; 1l 1 g

l g m sec

ca i.

wcama e ssa s

a weaus rv.s e u ar a

ca-g 3, 6 9 9 gg 9; 0 ; 8,8,1 g M b @ l 0,5,0,0; O 0 9 8,2 5 g 8: Ig O S

Isati g

)

2 as mac,.r

.a a

se osar ars 3

asecar u ra se Ev'NT E3catr*1cM Amo anCSA4LA CONSsCUENC13 h 1

l a i 2 ! tJhil e in mode 2. during a test of the turbine driven auxiliary feedwater pump i

1 g(TDAFWP), the suction piping was overpressurized when the pump was tripped. Thip i3,3, l

62..i violates T.S.3.3.2 and is reportable per T.S.6.9.1.12(e). In addition to the opy i3,3, prability of the two motor driven auxiliary feedwater pumps, analysis has deter-IoisI hined that even with the leaks caused;y the overpressurization, the TDAFWP could g ptill have provided adequate feedwater if it had been needed, and thus the hea:th

,2,..

nnd safety of the public were not af fected.

t a

t "c:Ta"

$:ci su"ac$$e compensw?::ee su "*

ss7 i S i v i @ W @ O,, @ i z i zi zr z i zi zig @og@ i]**@

i,,,i

,2 m

saCutWTtat CCO:44 8 tsect a gve gicas, a s pc.ay

,,,,near-oa asecar =a.

coes h,'unroo IRIl l l-l l ll316l [d

l 01 If lT;

[

,3 J

rv s we, S

._ a

s

s 2,

s

a a

2:

8 CPe

• NT s

.eCuPS l':

sbcase ACA 4.

~

p[

ata l]g l N gg l zg

EAml 9 l 9 ; 9,g l B GL,,X,,J@

l Z f@

[z,,j@

l0 ! 0! Os l

l m

m u

I

.auss casesirT cm Amo cemetenvs Ac :cus @

{i.o! Ko pressure protection was provided for the auxiliary feedwater pump suction

,,,,, piping because it was tnought that the S/G swing check valves would prevent any, ackflow or back pressure. The instruments that were damaged and/or exposed to,

It 26 the excessive nressure were checked. reen11brated. nnd/or rennired. and relief i yalves installed. Additional action dictated by analysis of the event will be i

j a, g en when the analysis is com etg r

se

'C li e s j [XJg l 0! 0 l 0 Igl Mo e

[ l Agl Personnel pserv,at ponenca @

rrarus 5ao-ea st2fus eisc:v nav eu ces

(

a4 g 7,,

r is is

.e so

1. mou=rcaactvery @ l tocartee,metaans@

=vi.useo :n =st.s4:e I' 18 I LZ,j @ L2]@l N/A l

N/A

,,.se

'.u ex,e=.as

..sca..n. @

.a l i I ? ! l 01 01 0'@@@l N/A __

l

.'t',uu'!.

=

I i i a I l O'"i den 0lgl scairnoah sa i

N/A l

,,,a sgos cagagt,o eac2urv g l' 4 51 (2j@l N/A I

P 4 9 13 3.

,,,'veue,T,',,,,,,,, g wac use cacy I:lot Q @(

N/A l

[fIIIfIIifIi [

r is se s.

(704) 373-7432 Aus e, pasransa Ph4114n R-wrd n M r*ca s:

h O

PDR