ML020240331
| ML020240331 | |
| Person / Time | |
|---|---|
| Site: | Davis Besse  |
| Issue date: | 01/23/2002 |
| From: | Sands S NRC/NRR/DLPM |
| To: | Document Control Desk |
| References | |
| 2001-01, FOIA/PA-2002-0229, TAC MB2626 | |
| Download: ML020240331 (11) | |
Text
NRC FORM 658 U.S. NUCLEAR REGULATORY COMMISSION (9-1999)
TRANSMITTAL OF MEETING HANDOUT MATERIALS FOR IMMEDIATE PLACEMENT IN THE PUBLIC DOMAIN This form is to be filled out (typed or hand-printed) by the person who announced the meeting (i.e., the person who issued the meeting notice). The completed form, and the attached copy of meeting handout materials, will be sent to the Document Control Desk on the same day of the meeting; under no circumstances will this be done later than the working day after the meeting.
Do not include proprietary materials.
DATE OF MEETING The attached document(s), which was/were handed out in this meeting, is/are to be placed 01/23/2002 in the public domain as soon as possible. The minutes of the meeting will be issued in the near future. Following are administrative details regarding this meeting:
Docket Number(s) 50-346 Plant/Facility Name Davis-Besse Nuclear Power Station TAC Number(s) (if available)
MB-2626 Reference Meeting Notice ML020110146 Purpose of Meeting (copy from meeting notice)
To discuss the Dais-Besse Nuclear Powxr Station plans for inspectioni if necessary, of the reactor vessel head Control Rod Drive Nim1hnsi Bulletin 2001-01 NAME OF PERSON WHO ISSUED MEETING NOTICE TITLE Stephen P. Sands Project Manager OFFICE NRR DIVISION DLPM BRANCH PD3-2 Distribution of this form and attachments:
Docket File/Central File PUBLIC This form was designed using In orms NRC FORM 658 (9-1999)
PRINTED ON RECYCLED PAPER
~w el kger Haer Discuss Davis-Besse CRDM nozzle inspection and repair plans.
application of flaw evaluation criteria at Davis-Besse.
SAnswer N.RC.questions and assure that all requested information is. provi'ded.
SIdentify methods/requirements for continuing communications.
1 FENO
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Gust ofIinspections arndRepuirs Assure safe operation of 14RFO in 2004, when.4RPV planned.
PerrA T O G i SFENOCE 4"CELL) 2 Davis-Besse until head replacement is FENOC
Iispectiuin Schedule Shutdown Start Visual Inspection UT Inspection Start Repairs Startup
,I y
I I'J.4 February February February February March 22 16 21 22-26 24 FENOC 3
insetiiion hIndeIair Commifments r Qualified visual examination
- Qualified personnel
- Capable equipment
- Governed by a procedure
- Plant specific gap analysis
- Nozzle un-obscuredi.,
- Ultrasonic testing of 100%: of nozzles
- Supplemental examination of nozzles 1-4 and obscured nozzles
- Dye penetrant test of nozzles with verified leak path
- Characterize flaws through destructive examination consistent with ALARA r Meet with NRC prior to 13RFO
ý,YgATIO]V
¢ FEN~qOC *.
FENOC C E L"L* C4.
r Perform qualified visual examination of un obscured nozzles
- Framatome procedure
- Improved videotapeOf inspection
- - Perform ultrasonic tesing of 100% of nozzles
-Framatome under-head blade probe UT utilizing ARAM IS delivery-system
- Framatome top doWn rotating probe UT for open nozzles SFENOC.FENOC oE --O FENO5
Iis~Iocio Plu
- k Characterization of nozzles with leak path verified by visual inspection.
- Framatome top down rotating probe UT
- Remote PT of weld and OD of nozzle SFlaw characterization
- No remote destructive examination technology available
- Current dose estimate (.14 man-rem) may preclude manual destructive examination
,ý,ATIONr I' FENOC 6
FlawEvalufatio Guideliwes
Reference:
November 21, 2001 NRC Proposed Flaw Evaluation Guidelines
>ir Pressure boundary flaws
- Utilize the MRP recommended crack growth rate
- Base materialrepairi* naccordance with ASME section XI and approved relief requests r Non-pressureboundary flaws
- Utilize the MRP.reCommended crack growth rate
- Projection of axial flaws to bottom of weld FENOC 7
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RepairPlans SUtilize Framatome ambient temperature temper-bead repair
- Low dose
- Industry experienceý'
- Longevity V ASME relief requests submitted for NRC review January 14, ;*2002.-,
TION.
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Davis-Besse 13RFO Reactor Head Nozzle Inspection Flow Chart Leak Path Verified Leak Path Verified RemIte PT RemIte PT FENOC
Flaw Evaluation Flow Chart If leak path is verified perform a PT
.s*ATION 4*
EL1S FENOC