05000295/LER-1979-072, Forwards LER 79-072/03L-0

Forwards LER 79-072/03L-0

ML19210B258
Person / Time
Site:	Zion File:ZionSolutions icon.png
Issue date:	10/24/1979
From:	Wandke N COMMONWEALTH EDISON CO.
To:	James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
References
NUDOCS 7911050295
Download: ML19210B258 (2)

LER-1979-072, Forwards LER 79-072/03L-0

Event date:
Report date:
2951979072R00 - NRC Website

text

'

~'.

Commonwealth Edison Zion Genereng Station Shiloh Blvd. & Lake Michigan Zicn,Illinoe 60099 Telephon',312/746-2084 October 24, 1979 Mr. James G. Keppler Regional Director Directorate of Regulatory Operations Region III U. S. Nuclear Regulatory Commission Glen Ellyn, Illinois 60137 i

Reference:

Zion Generating Station

{

Docket No. 50-295/DPR-39 Technical Specification, Section 6.6.2

Dear Mr. Keppler:

Enclosed please find Reportable Occurrence Report No.

50-295/79-72 for Zion Generating Station.

This report is submitted to you in accordance with the requirements of the Technical Specification, Section 6. 6. 2.b (2),

which states that conditions leading to operation in a degraded mode permitted by a limiting condition for operation or plant shutdown required by a limiting condition for operation require a 30-day written report.

Very truly yours,

/

N. E. Wandke Superintendent FO/dh

Enclosure:

Reportable Occurrence Report No. 50-295/79-72 1410 269 gg @ #

Y,5N 7 9110 50 NYS

?

\\

lP pf a

ce ej v N

\\*

N RC f Ohf.136G,

• U. S. NUCf 'iAR HEGULA10!!Y COMMIS0lON (7 77)

-]

LICENSEE EVENT REPORT CONTROL OLOCK: l l

l l

l l lh (PLEASE PRINT OR TYPE ALL REQUIRED INFORMATION) e I I L Z lI S l 1l@l 010 l -101010 0 l0 - l0l0l@l4llilI111l@l l

lg o

i I

d 9 LICENSEE CUDE 14 15 LICE %E NuYbEH h

.0 LILLN.L T v Fi au

'a i c A r 58 CON'T

((,] lL !@l 0l 5 l 0l 0 p l 2 l 9 l5 l@!1 1010 l 11 7 9 l@l 110 l 2 l 41 7 l 9 @

o i

?

tl 0g

(,1 COCK ET *.LYif E4 64 63 EVENT DATL le 7'J HEPOAT OATE do EVENT DESCRIPTION AND PROBADLE CONSEQUENCES h o

2 l During normal operating the Unit 1 cassive gas monitor, 1RT-PR15, I

o 3

l failed low and would not reset.

The monitor was taken OOS and shiftly I o

[ gas samples were taken off the steam pipe tunnel rad monitor, lRT-l PR07AB, as required by Tech Spec 3.14.1.c.

There were no safety I

o 3

on I implications and the health and safety of the general oublic were I

lol7 l not affected.

l OlH l

l 80 7

8 9 SYSTEN1

CAUSE

CAU;E C OYP.

VALVE COCE Cc;E SL9CCCE COYPCNENT CCDE SUSCODE

UECCCE l B l B l h lK l@ l Zlh IlN l SlT l RjU lh X lh Z lh o

9 7

8 9

10 11 12 13 18

'9 N

SEQUENTI AL CCCL'R P E '.CE REPORT AEVISICN LE EVENT YE AR R E P C R T *4 0.

CCCE TYPE NO.

h y,a WO [21 l9 l l-l l0l 7l2l l/l l 0l3 l lL l l-l l0 l

,g=;

7 22

3 24 JG 27 23 29 3J 31 32 ATT AC HY E NT N

PR lY E CO.'D CCYPCNENT gc.2,z@10, := q :s :r'AO-4g cc m Yu.m=U :,

ACTION F UTt!F C EFFECT S N U T O..O VIN cywlclZg l Zlg l0 i Oi xT g

,: r, _

0 l

I N hga)

N ig lAig l Ni3 l 0 i5 lg l E gl4 Zg i

JJ 4

h Ju Je 40 41 42 43 44 47 CAUSE DESCRIPTION AND CORRECTIV2 ACTIONS h l The instrument fail settina of the module drifted out of calibration.

I ii o

above the normal background levels of the monitor, causinc it to I

i i

i constantly trip.

The dial was re-calibrated and set to the correct I

i

, l value.

The monitor was functionally tested and returned to service.

I l No further corrective action is necessary, f

3 7

8 9 80 STA S

• POWE R OTHER ST A TL'S Cis C Y

DISCON ERY CESCR.PTION l E lh l0 l 4 9 l@l NA l

jAl@l Operator observation l

i 5

AC Tit l TY CO TENT RELEASED OF RELE ASE AVCUNT OF' ACitVITY LOC ATION CF RE LE ASE LLLc_1 W @ IZ 13 NA l

[

NA l

7 8 9 10 11 44 45 do PERSONNE L EXPCSLHES

% Y9Em TYDE CESen!PTICN 0-l q0l0j@lZl@l NA l _

i

{[}h

') ] h PE RS CN N il ;NJU 1[5 UY CA CCSCmPTION e

e s U L/ v 7

6

')

11 F?

63 L CM OF OH D AYAGE TO r ACILITY TWr CESCRIPTION 19 //d/o od 59 l

I 9@l i

7 4 9 10 to E CntPTION i

a >

w ca ci so. ;;

2, Fred Ost pg&L2 746-2094 e'w Nme or rnEoAnen