05000368/LER-1979-091-03, /03L-0:on 791126,during Mode 3 Operation,Dissolved Oxygen Concentration of Reactor Coolant Sys Found Greater than 0.1 Ppm But Less than 0.2 Ppm.Caused by Large RCS Deboration

From kanterella
(Redirected from ML19256G503)
Jump to navigation Jump to search
/03L-0:on 791126,during Mode 3 Operation,Dissolved Oxygen Concentration of Reactor Coolant Sys Found Greater than 0.1 Ppm But Less than 0.2 Ppm.Caused by Large RCS Deboration
ML19256G503
Person / Time
Site: Arkansas Nuclear Entergy icon.png
Issue date: 12/21/1979
From: Pendergraft R
ARKANSAS POWER & LIGHT CO.
To:
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
Shared Package
ML19256G491 List:
References
LER-79-091-03L, LER-79-91-3L, NUDOCS 7912310404
Download: ML19256G503 (1)


LER-1979-091, /03L-0:on 791126,during Mode 3 Operation,Dissolved Oxygen Concentration of Reactor Coolant Sys Found Greater than 0.1 Ppm But Less than 0.2 Ppm.Caused by Large RCS Deboration
Event date:
Report date:
3681979091R03 - NRC Website

text

.

NRC F ORM 366 U. S NUCLE AR REGUL ATORY COMMis&40N LICENSEE EVENT REPORT EXHIBIT A CONTROL BLOCK: l l l l l lh (PLE ASE PRINT OR TYPE ALL REQUtRED INFORMATIONI

@ l A]R l Al Nl 0 l2 lgl 010 l -l0 l 0 0l 0j0 - l0l0 l g l1 1 l1 l 1 lgl l lg 7

8 9 LsCENSEE CODE is 1S LsCEN5E NuwaER 25 26 UC L NSE IvPi JO b3 C A T be CON'T g'*y lL )@l0 l 5 p 10 0l3I6181@l111121617 91@l 112 l 211171 Cl@

o i 3

8 dbo ti poc at E T NUMS E 8 t

6'J EVENT DATE 74 7S HEPORTDATE 80 EVENT D 6CRh

' AND PROB ABLE CONSEQUENCES h'8 o

2 1 Durt P 1- '_ornrr ' ion the dissolved oxygen concentration of the Reactori o

3 Coolant

..a found to be greater than 0.1 ppm but less than 0.2 comt 1 The high oxygen concentration was discovered durina a routine chemical 1

o ianalysis of the RCS.

There have been no similar occurrences.

Another i

n s

F6Td'lIoccurrence involving RCS chemistry is lFR- %R/7R-007.

Ronnrtahlp nor I

o 2

1 T. S. 6. 9.1. 9. b.

I e

a I i

E LC E Sutt E L OvPONI* T lot >E

%e i st 5

0,,)E 17 m I c I al@ Lyj@ (Lj@ b 17 I v 17 1217 l @ [Lj @ tz_1 @

y a

9 60 ti 12 13 iP 19 N

5 E QUE N T. A L OCLUR M NCI hE f*0H f mEvss ON L E R 6a0 EVENTvfAR D E POR T NO CODE I vre No O,7,g 17, 19 I L-J l 019 I 11 Ld 101 31 LLJ L-J LQJ

_2 n

23 24 a

v n

~

v n

TA EN A TC PLA T METHC HOVRs 22 3 6 if D P O'8 H

SUPPL 4 R U ANL F A

  • E[ A LEJ@LZJ@

LZJ@

lLl@

1 0 1 01 0' I LNJ@

l NJ@

[Z_J@

lZ l 9l9 l 9l@

3J 34 3b 36 3) so en ej 43 4.

C AUSE CESCmPTION ANO CORREC flVE ACTIONS m iA larae RCS deboration had iust taken olace.

The VCT H2 atmosohere i

tiiiiirevealed a hiah N2 content.

A blank flange has been installed on the l i 121 1 N3 sunnly line to the VIT_

The VrT atmnenhorp isa c nurned with u 1 Dissnived nyygen enntent nf the RfC was loss tha n 0.1 nnm within 7 hnors.'

i 3

frTTI I meeting reonirements of ktion Statomont T.S.

1.4.7a.

t

'sT'a'IE?

oT~EnsTATus @ S7sE3 fv' vo*Ea o stu.Eav of u P r oN [H,j@ 101 Ol 01@lPower Escala-l LB.J@l NA i

s

'.!Tm i, Co' T E, T

' tion Test s:

avouNTc,4CTmTv @ l tounoNo,,Eif,sE@

EuasEu oP asLE*st lZj @ U@l NA l

NA c

j PEmsoN'aE., osse,

=

oEst.PT.cN@

Nuo.E.

TvPE 10 0 Ol@lZ_J@l NA i

a

(

,f osoN, E't. ;u'.',E s w

cEscaiPTioN@

Nuveta 10 010 l@l NA-i a

l 7

8 9 11 12 TYPE DEsem PTION Lz J@l NA j 6Qf j ') K o

7 R 9 10 i V w v l

P U B L IC I T,

46 NNCUSEUNLY Issue D DEsC8'PTicN l.EJ81 NA 1 lllllll;;;;; [

s 9

'O a...,

u en@ van

%U%bH19 NAME OF PREPARER

,, g gy,

7912310