05000369/LER-1981-105-01, /01T-0:on 810710,manifold Inlet Valve Opened, Causing Steam to Blow Out Open Vent & Drain Valves,Resulting in Reactor Coolant Leak.Caused by Personnel Error.Manifold Vent & Drain Valves Closed.Personnel to Be Instructed

From kanterella
(Redirected from ML20009G501)
Jump to navigation Jump to search
/01T-0:on 810710,manifold Inlet Valve Opened, Causing Steam to Blow Out Open Vent & Drain Valves,Resulting in Reactor Coolant Leak.Caused by Personnel Error.Manifold Vent & Drain Valves Closed.Personnel to Be Instructed
ML20009G501
Person / Time
Site: McGuire Duke Energy icon.png
Issue date: 07/24/1981
From: Nardoci P
DUKE POWER CO.
To:
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML20009G496 List:
References
LER-81-105-01T, LER-81-105-1T, NUDOCS 8108040355
Download: ML20009G501 (1)


LER-1981-105, /01T-0:on 810710,manifold Inlet Valve Opened, Causing Steam to Blow Out Open Vent & Drain Valves,Resulting in Reactor Coolant Leak.Caused by Personnel Error.Manifold Vent & Drain Valves Closed.Personnel to Be Instructed
Event date:
Report date:
3691981105R01 - NRC Website

text

.

- eron=2 6 u.z,-,

ro.n. -

a. m UCENSEE EVENT REPORT IDGilBITA

~

cominoc.sa.oca l.

I I l l

l

[@~

en.saas entser on rm Au.meatmaso meomanatican s.

us r m, @ u c.r l,aliiiNrcrsicIsi1J@so r of-to lo I o to l 01 -i olo @asi3i il,i il i

l

. - coo.

e coprT-I"I 5 l' IOI 5l Ol OIO I3 I'6 I9 @ l 0I7 Il IOl'8I'l @ I Ol7 l2 l418 Il l@

sounes.

s s'

occasr m a m est e-svearoars w

rs want aara-

' se, EVMNW6 As4 NCWe85GJeecSS h.

(TT5T I While in Mode 3, during the replacement process of a defective resistance tenperaT g 'I ture detector (KTD) on the "A" loop'RTD manifold', a technician opened the manifolf's g Iinlet valve causing' steam to blow out the open vent and drain valves. This re 3 g iactor coolant leak possibly violated Tech. Spec. 3.4.7.1 and is reportable per 9

Ioee1iTs 6.9.1.12(G).

Because of the actions of the positive di,,lacement pump, the-g-

p.#rt tavailability of all the safetr injection pumps had they been needed, and only new,.

~

g I-fuel in the core, the health and safety of the public were not affected.

p I c l a f@ (d.@ U@ fv I A I L l Vl El XI@ OW@

D @

E-E mE casseerrcos.-

M lai*I

=

n

.=

=

i.

M

  • '"c'o*7,'""* W T

O =t,,,,,,,

l' 811 f-f I 1 f 01 s I IA T of Il I.,. I g

a u

n u.

m w

s.

a, s.

n EE M*

o M *.' E E "

N@@ h@

h3.J,@- ro to b @I J p@

^"rrm aa ".t 1 "'"." M ow.

lNfg l 2 l 9 l 9l9 Jg causeosecmmosuasoconnecnvaacno IitoIl N TAE technicians misunderstood the instructions of their supervisor and at-g_

ii t i i i tempted to do work for which they were neither trained or qualified, and were m I without proper procedures.

The leak was isolated by closing the manifold vent p

g i and drain valves.

IAE technicians will recalve special instruction on which p

iit*i I valves thev are allowed to operate and the entire tagging procedure.

a3 on.enstans h a"nscoweE asesowspre casessiersom @

E

    • amese li is 1 (j@ l Of 01 d@I Mode 3 l ' Q, Personnel Observation

]

a.

m 2

_o._ @-

u o.

(

l1isl W @ { Q i NA l

l NA

[

t a

s s.

s em-15171I'OIOl0 b @l NA I

r a. s.

g ta.

ama.m,@

ma a-l' is l I Ol 011 l@l Steam burn j

i, 8"

to paciurv g taaropon l

  • l s I l 21@l NA l

Necuse opet.r-I2f81 M NA I

lI!!IIIIIIIIl

,70I)*373-7432 8108040355 $10724

    • ~

(

Phillip B. Nardoci PDR ADOCK 05000369 IPAmen S

PDR