ML022620538

Condition Report 02-05705 for Davis Besse, Cladding Crack Found in Original Rvh Cavity

ML022620538
Person / Time
Site:	Davis Besse
Issue date:	09/09/2002
From:	Marjorie Mclaughlin FirstEnergy Nuclear Operating Co
To:	Office of Nuclear Reactor Regulation
References
FOIA/PA-2003-0018 CR 02-05705
Download: ML022620538 (1)

Text

NOP-LP-2001 -01 CONDITION REPORT lCR Number TITLE: CLADING CRACK FOUND IN ORIGINAL RVH CAVITY 02-05705 DISCOVERY DATE I TIME EVENT DATE lTIME lSYSTEM I ASSETN 916/2002 l

NIA i

na l

N/

NA N/ANA EQUIPMENT DESCRIPTION Original Davis-Besse Reactor Head Cavity DESCRIPTION OF CONDITION and PROBABLE CAUSE (if known) Summarize any attachments. Identify what, when, where, why, how.

0 The 17" diameter specimen that was removed from the original Davis-Besse Reactor Pressure R

vessel is currently undergoing examination in a laboratory. The laboratory informed Davis-Besse R

today that a crack approximately 3/8" long was found in the center of the exposed cladding area of G

the cavity. This new information will need to be evaluated for possible effects on the safety G

significance analysis.

N The laboratory also performed cladding thickness measurements. The results were as follows:

A T

Average - 0.256' l

Minimum - 0.202" o

Maximum - 0.314" N

These results will also need to be evaluated to determine their effect on the safety significance analysis.

SUPV COMMENTS I IMMEDIATE ACTIONS TAKEN (Discuss CORRECTIVE ACTIONS completed, basis for closure.)

NA QUALITY ORGANIZATION USE ONLY IDENTIFIED BY (Check one) 3 Self-Revealed ATTACHMENTS Quality Org. Initiated 0 Yes E Individual/Work Group

[

Internal Oversight QualityOrg Follow-up

[]Yes E No

[

Supervision/Management

[

External Oversight LI Yes i No ORIGINATOR ORGANIZATION DATE SUPERVISOR DATE 7PHONE EXT.

MCLAUGHLIN. M CH 919/2002 MCLAUGHLIN, M 919/2002 l

8295 SRO EQUIPMENT EVALUATION IMMEDIATE I ORGANIZATION MODE CHANGE P

REVIEW OPERABLE REQUIRED INVESTIGATION REQUIRED X NOTIFIED RESTRAINT L

___ Yees No NEjes El No 0

Yes O No E

N/A Yes i.No A

MODE ASSOCIATED TECH SPEC NUMBER(S)7 A' SSOCIATED LCO ACTION STATEMENT(S)

N N/A;4 l

/At~-

,w e

'lr k i I*#1 sJoNIA ns ie'~

i i^ZAEmw*-

Scotti~

>,4

' ' r 'af T

1. 2 o

DECLARED REPORTABLE?

One Hour NIA APPLICABLE UNIT(S)

NOPERABLE (Date/Time) lyes [INo

[Four Hour'.i iAj.rAf E

N/A l Eval Required Other NIA i_

u U2 Both R

COMMENTS A

N/A T

0 N

Current Mode - Unit 1 Power Level - Unit 1 Current Mode -Unit 2 Power Level - Unit 2 S

N/A NIA NIA N/A SRO - UNIT I SRO - UNIT 2 DATE Approved By Supv N/A 91912002

_,X.17