05000315/LER-1979-029-03, /03L-0 on 790414:cracks Discovered in Divider Barrier Seal.Caused by Excessive Compression of Seal Matl by Steel Plates.Work in Progress to Replace Cracked Sections

/03L-0 on 790414:cracks Discovered in Divider Barrier Seal.Caused by Excessive Compression of Seal Matl by Steel Plates.Work in Progress to Replace Cracked Sections

ML17317B207
Person / Time
Site:	Cook
Issue date:	05/14/1979
From:	Wizner D INDIANA MICHIGAN POWER CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
Shared Package
ML17317B206	List: 05000315/LER-1979-029, Forwards LER 79-029/03L-0 05000315/LER-1979-029-03, /03L-0 on 790414:cracks Discovered in Divider Barrier Seal.Caused by Excessive Compression of Seal Matl by Steel Plates.Work in Progress to Replace Cracked Sections
References
LER-79-029-03L, LER-79-29-3L, NUDOCS 7905210142
Download: ML17317B207 (1)

LER-1979-029, /03L-0 on 790414:cracks Discovered in Divider Barrier Seal.Caused by Excessive Compression of Seal Matl by Steel Plates.Work in Progress to Replace Cracked Sections

Event date:
Report date:
3151979029R03 - NRC Website

text

NRC FORM 366 (7-77)

U. S. NUCLEAR REGULATORY COMMISSION ICENSEE EVENT REPORT Q1 (PLEASE PRINT OR TYPE ALLREQUIRED INFORMATION) 6 I

QE 0

0

0 0

0 0

0

0 0

Qo 4

I I

I I OR~Os 14 15 LICENSE NUMBER 25 26 LICENSE TYPE 30 57 CAT 58 Q

74 75 REPORT DATE 80 SEAL WAS FOUND TO HAVE CRACKS IN THE RUBBER Al CNG THE OUTER SURFACE

~

CONTROL BLOCK:

I

~RT M

I D

C C

7 8

9 LICENSEE CODE CON'T

~87 REPORT GLOR 0

5 0

0 0

3 I

OT 0

4 I

4 7

9 Q8 0

5 1

4 7

8 60 61 DOCKET NUMBER 68 69 EVENT DATE EVENT DESCRIPTION AND PROBABLE CONSEQUENCES Q10

~82 DURING SURVEILLANCE INSPECTION PER" T ~ S ~

4 ~ 6 5

~ 9 THE DIVIDER BARRIER THE CRACKS DID NOT PENETRATE THE SEAL.

THE SEAL INTEGRITY REMAINED 8

INTACT.

THIS EVENT DID NOT JEOPARDIZE PUBLIC HEALTH AND SAFETY.

~os

~OE 7

8 9

80 [oO~]

7 8

SYSTEM

CAUSE

CAUSE COMP.

VALVE CODE CODE SUBCODE COMPONENT CODE SUBCODE SUBCODE

~sB 077 B O>>.~cO>>

x x

x x

x xS LzJS LJS 9

10 11 12 13 18 19 20 SEQUENTIAL OCCURRENCE REPORT REVISION LFR/RO EVENTYEAR REPORT NO.

CODE TYPE NO.

Q REPORT

~79 T ~

~02 9

~W

~03

~L

~

0 21 22 23 24 26 27 28 29 30 31 32 ACTION FUTURE EFFECT SHUTDOWN ATTACHMENT NPRDQ PRIME COMP.

'OMPONENT TAKEN ACTION ON PLANT METHOD HOURS Q22 SUBMITTED FORM SUB.

SUPPLIER MANUFACTURER

~ASL~IOEE

~ZOEE

~ZO" 0

0 0

0 N

O23

~NO24

~AOEE z

9 9

9 O28 33 3:

35 36 37 40 41 42 43 44 47 CAUSE DESC IPTION AND CORRECTIVE ACTIONS Q27 8

THE C CKS WERE CAUSED BY EXCESSIVE COMPRESSION OF THE SEAL MATERIAL BY THE STEEL PLATES USED TO CLAMP IT IN PLACE.

WORK IS IN PROGRESS REPLACING THE SECTIONS OF THE SEAL WHERE EXCESSIVE COMPRESSION WAS EVIDENT OF CRACKS WERE 3

IDENTIFIED.

ALL REPAIRS WI LL BE COMPLETE PRIOR TO ENTERING MODE

( ~

CCI ACTIVITY CONTENT RELEASED OF RELEASE AMOUNTOF ACTIVITYQ

~Z Q33 Z

Q34 N/A 7

8 9

10 11 44 PERSONNEL EXPOSURES NUMBER TYPE DESCRIPTION A3 7 ~00 0

Q37 ~ZQ38 I47A 7

8 9

11 12 13 PERSONNEL INJURIES NUMBER DESCRIPTIONQ41 8 ~00 0

Q40 N/A LOCATIONOF RELEASE Q N/A 45 7

8 9

FACILITY

~30 METHOD OF STATUS 96 POWER OTHERSTATUS ~

DISCOVERY DISCOVERY DESCRIPTION Q32 7

8

~HO28 ~00 0

Q28 N/A

~BOEE SURVEILLANCE INSPECT ICN 8

9 10 12 13 44 45 46 80 80 80 80 7

8 9

11 12 LOSS OF OR DAMAGETO FACILITYQ43 TYPE

DESCRIPTION

zO4, N/A 7

8 9

10 PUBLICITY ISSUED DESCRIPTION Q o ~NOR'/A 8

9 10 NAME OF PREPARER DAVID G.

WIZNER

~)05 k/I z7 I/'f2, NRC USE ONLY 80 80 68 69 80 ~ o PHO E 5901, EXT.

598 0