ML031040138
| ML031040138 | |
| Person / Time | |
|---|---|
| Site: | Davis Besse  |
| Issue date: | 05/28/2002 |
| From: | Pickett D Office of Nuclear Reactor Regulation |
| To: | - No Known Affiliation |
| References | |
| FOIA/PA-2003-0018 | |
| Download: ML031040138 (7) | |
Text
, a I Steven-Long - Div-1-s--Bi-ss-6-Tele-Conterence 2:00 p.m:TO-djy-Steven.:. L-n
- Di8esee--~lerc 2:0 p-m 'd From:
To:
Date:
Subject:
Douglas Pickett I'-
DB Daily Call; DB0350 5128102 7:53AM Davis-Besse Tele-Conference 2:00 p.m. Today We will be having a telecon with the Davis-Besse licensee at 2:00 p.m. EST today. I have reserved room 9B4 for headquarters, personnel. We will use the usual conference bridge number of either 301-231-5539 or 800-638-8081 wi asscode Inforrmlcmimn I ths reccrd was delleted if aCCOidai;ca w!ith tile Freedomn of Information
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-t Steven-Long - sample Plan Phase 3 Page I a, l-r
tevenLOng
- ampie nan rnase iage I From:
<mkleisure@firstenergycorp.com>
rs To:
<dvp1@nrc.gov>
D );ck.
be Date:
5124102 11:59AM
Subject:
Sample Plan Phase 3 Doug-Attached is Sample Plan Phase 3, revised to Incorporate the NRR comments emailed on May 14. Also attached Is an updated copy of the quarantine list We plan to Include a discussion of the sample plan on the agenda for the 2pm conference call on May 28.
(See attached file: Sample Phase 3.doc)(See attached file: Quarantine Ust 052302.doc)
Mike Leisure Davis-Besse Licensing (419)321-7168 CC:
<drwuokko@firstenergycorp.com>, <dlrmiller~flrstenergycorp.com>,
cdhlockwoodefirstenergycorp.com>, 4dleshelman~firstenergycorp.com>,
<ipowers~firstenergycorp.com>,
mmclaughlin@firstenergycorp.com>, <tsswimrfirstenergycorp.com>,
<rwschrauder@firstenergycorp.com>, <mkleisure~firstenergycorp.com>,
cmrnemer@firstenergycorp.com>, <Jmessina~firstenergycorp.com>,.TTPIeune~firstenergycorp.comr,
<loehleins@firstenergycorp.com>
= W-M-7%
i Ax steven) Long - Sample Phnase j aoc P~age I1 i teveo Long - ampie rnase .aoc rage i i 5/23/02 Davis-Besse Reactor Head Sample Characterization Phase 3 Sample Analyses Analyses are proposed to be performed on the following Sample IDs. See the attached inventory for further details on each of the samples.
Sample ID Nozzle 3 Nozzle 2 Nozzle 3 corrosion area The following analyses will be performed for characterization of these three Sample IDs:
- 1. Visual/Stereovisual Inspections and Dimensional Measurements NOTE Either a visible dye penetrant test or a fluorescent penetrant test may be performed on selected areas on some pieces (e.g., Nozzle 3, weld, cladding, low alloy steel), either before sectioning or after sectioning, if the stereovisual inspections are not successful in locating cracks in the samples. If performed, the results of the applied penetrant test will serve as the basis for the section plan to obtain specimens for metallurgical examination.
(a) For all three Sample IDs, color digital photographs will be taken at low magnifications to document the as-received condition. Detailed visual inspections will then be performed under the stereomicroscope at magnifications up to SOX to characterize any salient features. Representative color digital photographs will be taken at magnification to document significant findings.
HOLD POINT Prior to proceeding with sectioning or other destructive testing, the current status will be discussed with the NRC staflf (b) After sectioning to expose the corroded area, dimensional measurements will be taken of the Nozzle 3 corrosion area sample to determine the remaining stainless steel cladding thickness. A detailed map of the cladding thickness will be made using two opposing (1)
-p bteven Long - ampie rnase .aoc Page 2 i
.- Steven-Long -
ample Fhaseld.oc Pa-qe 2 4 l-5/23/02 dial indicators, with measurements taken in a 0.5" grid pattern (approximately 175 total readings).
(c) A non-shrink molding compound will be used to create an impression of the Nozzle 3 corrosion area. The resulting mold will be used to obtain accurate dimensional measurements and other characteristics of the corroded area, including the footprint of the exposed stainless steel cladding and the elevation profile of the cladding in the corroded area.
- 2. Optical Metallography HOLD POINT Sample selections will be based on the results of Step 1.
Prior to proceeding with sample sectioning, the current status will be discussed with the NRC staft Samples from Nozzles 2 and 3 will be removed for metallurgical analysis and to characterize crack morphology (if any cracks are identified), material microstructure, grain size, grain boundary carbide precipitation, and evidence of cold work (surface or interior). Samples from the low alloy steel and cladding of the Nozzle 3 corrosion area will be removed for metallurgical analysis and to characterize crack morphology (if any cracks are identified),
pitting, and cladding thickness. Approximately 12 metallographic mounts are planned for analyses.
- 3. Scanning Electron Microscopy and Energy Dispersive Spectroscopy HOLD POINT Sample selections will be based on the results of Step 1.
Prior to proceeding with sample sectioning, the current status will be discussed with the NRC stafL Samples from the low alloy steel and cladding of the Nozzle 3 corrosion area will be removed for Scanning Electron Microscopy (SEM) to characterize the corrosion surface due to boric acid attack. Samples from the Nozzles, J-groove welds, and opened crack surface (if any cracks are identified) will be removed for SEM to characterize microstructural features (carbide distribution) and crack surface morphology. The Energy Dispersive Spectroscopy (EDS) attachment on the SEM will be used to semi-quantitatively determine the base metal chemistry of the various samples. Approximately 12 samples are planned for analyses.
(2)
a 'h Steverr Long - Samnple Phase 3.doc P-age 3 X I Steverr Long - Sample Pflase .doc rage ; I 5/23/02
- 4. Microhardness Tests Knoop microhardness tests will be performed on mounted and polished samples. These tests will be performed in accordance with ASTM E 384. Ten readings per metallographic mount are planned.
Control of Samples Nozzle 3 has been previously removed from the reactor head and is currently in the custody of Framatome-ANP (F-ANP) in Lynchburg, VA. Nozzle 2 has also been removed from the reactor head and is currently located in the maintenance hot shop at Davis-Besse. The Nozzle 3 corrosion area sample has also been removed from the reactor head and is currently located in the maintenance hot shop at Davis-Besse. Nozzle 2 and the Nozzle 3 corrosion area will be sent to F-ANP. F-ANP will then be responsible for transportation of the samples to the vendor laboratory in Lynchburg, Virginia.
Traceability of the Sample IDs, and any samples removed from these Sample IDs, will be maintained. Each sample will be identified either by a sample identification on the sample itself or a sample identification on a container or a plastic bag. Only one sample will be allowed in a container or in a plastic bag. The inventory of the samples and the specific location of each sample will be documented in a project logbook maintained by the vendor test facility.
HOLD POINT Prior to proceeding with the disposal of samples, the current status will be discussed with the NRC staff No samples or materials will be disposed of without FENOC authorization. Samples will be retained until released from quarantine.
Schedule It is estimated that the base work scope can be completed within approximately two weeks of receipt of the samples at the vendor laboratory. A final report will be provided to FENOC approximately four weeks following completion of the laboratory work. This report will provide a detailed description of the material samples, a detailed description of the analytical techniques utilized and the results.
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1 bteveen Lond - wuaranJun1e uL O U;Zu=.9oV ra'-. 1 i Inventory of Root Cause Investigation Samples Revision Date:
Quarantine List 51 002 Sample ID Sample Date Present Location Responsible Analysis Results or Description Taken I
Persons Requested Present Status No External Analysis quired Dental Dental impression of 4/312002 Davis-Besse Mark Visual Visual Impression Nozzle 2 RPV head maintenance hot McLaughlin, Measurement Measurements Nozzle 2 penetration area shop jDB; Todd incorporated Into Pleune, DB Root Cause I
jReport Phase 1 Samples N2 to NI 3.1 g of Rusty Boric 3/14/2002 Kinectrics, Beverly Elemental Testing (Sample #1) Acid - Between Ontario, CA Cyrus. FANP; analysis by ICP, complete, report nozzles 2 and 1 Todd Pleune, X-ray diffraction, being prepared DB Ion Chromoto raphy NI to N3 0.55 g of Rusty Boric 3/1412002 i~inectrics, Beverly Elemental Testing (Sample #2) Acid - Between Ontario, CA Cyrus, FANP; analysis by ICP, complete, report nozzles I and 3 Todd Pleune, X-ray diffraction, being prepared DB Ion Chromotography N7 (Sample 3.7 g of Rusty Boric 3/14/2002 Kinectrics, Beverly Elemental Testing
- 3)
Acid - Near nozzle 7 Ontario, CA Cyrus, FANP; analysis by ICP.
complete, report Todd Pleune, X-ray diffraction, being prepared OB Ion Chromnotography N2 (Sample 12.3 g of Rusty Boric 3/14/2002 Winectrics, Beverly Elemental Testing
- 4)
Acid - Near nozzle 2 Ontario, CA Cyrus, FANP; analysis by ICP, complete, report Todd Pleune, X-ray diffraction, being prepared DB Ion Chromatography Nzzle 3 Rusty deposits 4/212002 Kinectrics, Beverly Elemental Testing Deposits scraped from the top Ontario, CA Cyrus, FANP; analysis by ICP, complete, report of nozzle 3; very Todd Pleune, X-ray diffraction, being prepared light and porous; DB Ion easily removed from Chromotography the nozzle surface wi a metal spatula Phase 2 Samples Step 2 2.19g Material that fell 412002 Framatome ANP Beverly Elemental Testing ongoing nozzle 2 into the collection Special Cyrus. FANP; analysis by ICP, at linectrics In cup during removal Equipmnent Todd Pleune, X-ray dliffracton,Onai of nozzle two Refurbishment DB Ion Facility -4 (SERF-Chromotography 1
1~~4) 1I
SteveF, Long - Quarantine List 052302.doc Page2 StvnLn - Qaatn it020.o ae2 Step 5 0.35 g Loose 4312002 Framatome ANP Beverly Elemental Testing ongoing nozzle 2 deposits from the Special Cyrus, FANP; analysis by ICP, at K(inectrics in RV head penetration Equipment Todd Pleune, X-ray diffraction, Ontario area Refurbishment DB Ion Facility -4 (SERF-Chromotography Step 6 0.5 g Tightly 4/3/2002 Framatome ANP Beverly Elemental Testing ongoing nozzle 2 adherent deposits in Special Cyrus, FANP; analysis by ICP, at Kinectrics In the RV head Equipment Todd Pleune, X-ray diffraction, Ontario penetration area Refurbishment DB Ion Facility -4 (SERF-Chromotography Step 7 0.23 g Deposits from 432002 Framatome ANP Beveriy Elemental Testing ongoing nozzle 2 RPV head Special Cyrus, FANP; analysis by ICP, at Klnectrics In penetration cleaning Equipment Todd Pleune. X-ray diffraction, Ontario with nylon brushes Refurbishment DB Ion Facility -4 (SERF-Chrornotography
.4) p__
_ es for Future Phases Nozzle 3 Nozzle 3 from the 392002 Framatome ANP Hongqing Xu, Visual-Stereo Analysis will CRDM flange to the Special FANP; Todd Inspection &
begin after when top of the i-groove Equipment Pleune, DB Measurement, other two (below) weld Refurbishment Metallography, samples arrive Facility -4 (SERF-SEM-EDS, and
- 14) others Nozzle 2 Nozzle 2 from the.
4/2002 Davis-Besse Hongqlng Xu, Visual-Stereo Preparations for CRDM flange to the maintenance hot FANP; Todd Inspection &
shipping (next top of the 1-groove shop Pleune, DB Measurement, week) to weld Metallography, Framatome ANP SEM-EDS, and are ongoing others Nozzle 3 Cutout of corrosion 5/13/02 Davis-Besse Hongqing Xu, Many anlysis Preparations for corrosion area adjacent to maintenance hot FANP; Todd including Visual shipping (next area nozzle 3 shop Pleune, DB Inspection &
week) to Measurement and Framatome ANP Metallography are ongoing For tracking purposes only
- Samples that are not part of Confirmatory Action Letter 3-02-001 Quarantine Ust for root cause but will be stored and maintained in the quarantine area for possible future analysis Nozzle 11 Nozzle 11 from the 4162002 Davis-Besse Mark None planned Stored In the CRDM flange to the maintenance hot McLaughiin, event that EPRI top of the i-groove shop DB orthe NRC weld would like to analyze properties In the
_future Nozzle 46 Nozzle 46 from the Not Davis-Besse RPV Mark None planned Awaiting repair CRDM flange to the Planned head in CTMT Mctaughlin, top of thej-groove to be DB weld removed