ML053070307

Crait Issues

ML053070307
Person / Time
Site:	Davis Besse
Issue date:	06/11/2002
From:	- No Known Affiliation
To:	Office of Nuclear Reactor Regulation
References
Download: ML053070307 (55)

Text

CR4ZT Zssu es Tracking Issue Number Date Issite Category/

ECD GrouPlaad Response CR Initiated Status and Number CRAIT-0001 3/13/2002 Root Cause Team List of lnterviewees 3/14/2002 Request Provided a list of Personnel Interviewed Closed No dated 311 4/02 0657 (See CRAIT-0036 Field Activity for updates)

N/A NRC - Ron Gardner Steve Loehlein Chuck Ackerman CRAIT-0002 3/13/2002 Root Cause Team Time Line 3/13/2002 Request Provided a copy of the CRDM Sequence Closed No Root Cause Team Time Line (Electronic Doug Simpkins.

Steve Loehlein of Events (Hard Copy) dated 3/13/02 Copy) - Electronic Copy requested by NRC Root Cause (Approximately 10:30 AM).

N/A Provided a copy of the CRDM Sequence of Events (Electronic Copy) dated 3/13/02 (Approximately 17:30 AM).

(See CRAIT-0050 for updates)

NRC - Ron Gardner Chuck Ackerman CRAIT-0003 3/13/2002 Requested Regulatory Timeline For Boric Acid 3/13/2002 Request Information listed in Ref Docs provided.

Closed No Control (Me1 Holmberg): This request includes relevant regulatory Information Notices, External N/A Bulletins, and Generic Letters with either internal and/or external plant responses: IEB R. J. Slyker 01-01, GL 88-05, GL 97-01 etc..

Interface NRC - Me1 Holmberg R. J. Slyker CRAIT-0004 3/13/2002 Provide a copies of information that the Root 3/13/2002 Request The reference documents listed below Closed No Cause Team has gathered for the investigation of wastage near CRD Nozzle 3.

External week. See the individual document N/A were provided to the NRC over the last entty in Reference Documents for detailed descriptions of the documents.

Completed on 3/19/02 Interface D. L. Miller NRC - Ron Gardner Dale Miller I:

6/11/2002 9:23:39 AM Page I of 55

Tracking Issue Category/

CR Initiated Number Date Issue ECD GrouPlaad Response Status and Number CRAIT-0005 3/13/2002 Provide copies of videos of head visual 3/13/2002 Request Videos from visual inspections of the Closed No External RFOl2 and RFO 13 provided (see NIA Interface reference documents for list) inspections head available from RFO 10, RFO11, D. L. Miller NRC - Ron Gardner D. L. Miller CRAIT-0006 3/13/2002 What is the plan for eroded area of # 2 nozzle 3/14/2002 Question Root Cause Steve Loehlein NRC - Me1 Holmberg A replica of the nozzle 2 and cavity Closed No areas would be very useful in assessing pitting or cracking of these areas.

N/A However, this would be fairly dose intensive, without providing significant additional information. On the other hand, the root cause team feels that to assess the wastage conditions associated with nozzle 2, videotaped information, followed by dental impression(s) will adequately provide the necessary data for assessment of the conditions. An integrated plan for inspection and evaluation of the nozzle

1. 2 location is currently being formulated. This will be provided to the AIT and NRR for review and approval prior to implementation. (See CRAIT-0074)

Steve Fyfitch CRAIT-0007 311 312002 The Davis-Besse Nuclear Power Station 311 a2002 Voluntary

~

External Interface M. A. Riemer /

K. A. Spencer Control Rod Drive Mechanism Nozzle Information Book was voluntarily handed out to each member of the AIT durring the entrance on 311 2/02.

Davis-Besse Nuclear Power Station Closed No Control Rod Drive Mechanism Nozzle Information Book was given to the AIT N/A on 311 2/02 Aaron Bless 6/11/2002 9:23:40 AM Page 2 of 55

Tracking Issue Number Date Issue Category/

ECD GrouPihad Response CR Initiated Status and Number CRAIT-0008 3/13/2002 Provide Information Notice and response for:

3/14/2002 Request Provided documents to NRC AIT on Closed No

~

External-NIA 311 4/02.

IN 90-010 IN 94-063 IN 96-01 1 Interface R. J. Slyker NRC - Me1 Holmberg R. J. Slyker CRAIT-0009 3/13/2002 What are the plant staffs plans for nozzle #2?

And what are the data gathering plans?

(See CRAIT-0074 also)

Question Discussion was held between Me1 Closed No Cause Davis in attendance on the Root Cause N/A Holmburg with Ron Gardner and Jim teams scope and activities in regards to nozzle #2 removal plans and failure anaylsis data. (CRAIT-0074 tracks plan developement)

Steve Loehlein Response: On-going discussions are being held with plant management. The management oversight continually challenges the root cause team with the same interests. The root cause team is comparing the wastage information between nozzle #3 and nozzle #2, however no specific actions are being taken or planned at this time. The team is also concerned with balancing retrieval of all the available data is being collected while ensuring data is not destroyed and no damage to the reactor head occurrs. Also the increased dose associated with the second nozzle removal must be considered as part of the scope.

NRC - Me1 Holmberg Steve Loehlein 6/11/2002 9:23:40 AM Page 3 of 55

Tracking Issue Number Date Issue Category/

ECD Group/Lead Response CR Initiated Status and Number CRAIT-0010 311 3/2002 CRAIT-0011 311 3/2002 Mr. Holmberg called and asked if a film surface replication was going to be performed for the CR Nozzle #3 cavity? The technique uses a softened acetate film, pressed unto the surface of the cavity which is removed and scanned by an electron scanning microscope.

Is this being considered?

Should we use scanning electron microscope film to take impressions of the nozzle 2 and cavity areas. Per AIT this may help distinguish between impingement and corrosion NRC - Me1 Holmberg Me1 Holmberg's request is to be provided the results of any step of the inspection and sampling plan. Save debris that is vacuumed up following removal of insulation. Inspection and Sampling Plan step #2.

2. Decontamination and area cleanup. Use only a clean vacuum cleaner, no liquids or wiping (save the debris that is vacuumed as samples).

NRC - Me1 Holmberg 3/15/2002 Question The root cause has considered this Closed No technique and as similarly noted in Root Cause CRAIT-0006, the team feels that N/A Steve Fyfitch videotaped information, followed by laser and mechanical measurements and subsequent dential impression(s) will adequately provide the necessary data for assessment of the conditions.

An integrated plan for inspection and evaluation of the nozzle #3 location has been formulated. This will be provided to the AIT for review. NRR has already reviewed and approved the plan.

Results are currently being made available to the root cause team.

Steve Fyfitch Request Action Plan Results IAW WO 02-001 917-Closed No Field Activity N/A 000 Mark Mc-aughlin 1) RP removed debris from around nozzle 2. Stored 21/2 bags that are 5' diameter by 2' long.

2) 2 bags of cloth (weld blankets) and 2 bags of insulation (previously removed from the work platform) were stored in a black barrel. It is located in the locked hi-radiation area north of the reactor headstand on the 623' elevation. All bags are labeled 3-1 3-02 @ 1930 prior to data gathering.

Dale Miller 6/11/2002 9:23:40 AM Page 4 of 55

Tracking Issue Number Date Issue Category/

ECD GrouP/aad Response CR Initiated Status and Number CRAIT-0012 3/13/2002 Me1 Holmberg's request is to be provided the results of any step of the inspection and sampling plan. Inspection and Sampling plan step #3.

3. Video examination with audio dubbing of nozzle #3 cavity from top looking for general extent of corrosion; evidence of flow across clad and base metal surface; and evidence of possible impingement of steam jet on surfaces. Look also for any packed boron deposits, and cavity underhangs.

Characterize the deposits as to size and color. Do not remove any material at this time.

NRC - Me1 Holmberg Request Video, "Root Cause Video of Nozzle #3 Closed No Field 3/14/02 - AM completed and provided to N/A and Adjacent Nozzles, 3/13/02 - PM to Mark McLaughlin the NRC (DB tape #A-2.)

Action Plan Results IAW WO 02-001917-000 During the entire video taping of Nozzle 3, there appeared to be no cavities or divots that still contained caked in boron deposits. Loose boron and miscellaneous debris from the insulation removal process, that was not vacuumed out when step 2 of the QAISP was performed, can be seen in the areas where the sides of the cavity intersect the remaining J-groove weld.

Thus there was no boron to characterize. Also, during the entire video review of the nozzle #3 cavity, there were no cavity surface irregularities observed that would be indicative of steam cutting. All the surface irregularities were indicative of what you would expect from metal that has been eaten away.

The sides of nozzle #3 cavern were relatively clean and the white areas seen in the earlier video were not boron, but metallic color. The cavern appears to go all the way back to nozzle #11.

Dale Miller 6/11/2002 9:23:40 AM Page 5 of 55

Tracking Issue Number Date Issue Category/

ECD GrOuPlhad Response CR Initiated Status and Number CRAIT-0013 3/13/2002 Me1 Holmbergs request is to be provided the Request Action Plan Results IAW WO 02-001917-Closed No sampling plan. Inspection and Sampling plan Field Activity N/A step #4

4. Video examination (of the top of the insulation) with audio dubbing down the four lanes surrounding nozzle #3, looking for any remaining boron residue. (See attached sketch) Review video to determine if boron samples are available. Characterize the samples (size, color, etc.) and identify location. If available, obtain these in step 7.

results of any step of the inspection and 000 Mark McLaughlin Video Name: Root cause analysis top of insulation exam around #3, under flange, top of head. (DB Tape #A4)

NRC - Me1 Holmberg Dale Miller CRAIT-0014 3/14/2002 Me1 Holmbergs request is to be provided the results of any step of the inspection and sampling plan. Inspection and Sampling plan step #7

7. Remove any boron samples that may exist above and below the insulation, particularly those which would have been tightly adherent to the surface of the RV head (making note of this). The location of any samples shall be carefully mapped and characterized (important physical information includes color, size, shape, and adherency). Store in a clean bagkontainer.

a. At nozzle #1

b. At nozzle #2

c. At nozzle #3 cavity

d. Top of head NRC - Me1 Holmberg Request Action Plan Results IAW WO 02-001917-Closed No Field Activity N/A 000 Mark McLaughlin Bags of boron samples located on level 623 in black barrel north of reactor head stand. Each bag is marked 3-14-02 0600, scrapped @ nozzle #1, 3-14-02 0600 scrapped 0 nozzle #2, and 3 02 0600 in vacuum bag.

Dale Miller 6/11/2002 9:23:40 AM Page 6 of 55

Tracking Issue Number Date Issue Category/

ECD GrOuPlbad Response CR Initiated Status and Number CRAIT-0015 3/14/2002 Root Cause Team Timeline Excel File 3/14/2002 Request Provided NRC - Doug Simpkins an Closed No (to provide a corrected copy of AITRD-0155)

Root Cause file updated on 3/14/02.

None electronic copy of Sequence of Events Steve Loehlein (See CRAIT-0050 for updates)

NRC - Doug Simpkins Aaron Bless CRAIT-0016 3/14/2002 Talk with Steve Hunt about Boric Acid 3/14/2002 Interview Duplicate item - see CRAIT-0026 for Closed No Corrosion Root Cause Strategy.

closure Root Cause N/A NRC - Me1 Holmberg Steve Loehlein Dale Miller CRAIT-0017 3/14/2002 Me1 Holmberg's request is to be provided the results of any step of the inspection and sampling plan. Inspection and Sampling plan step #5

5. Video examination of nozzle #1 (360 degrees around nozzle) with audio dubbing, looking for signs of wastage around the nozzle to RV head interface.

NRC - Me1 Holmberg Request Action Plan Results IAW WO 02-001917-Closed No Field Activity N/A 000 Mark McLaughlin Video, "Root Cause Video Of Nozzle #3 and Adjacent Nozzles, 3/13/02 - PM to 311 4/02 - AM completed and provided to the NRC (DB Tape #A2)

Dale Miller CRAIT-0018 311 412002 Me1 Holmberg's request is to be provided the Request Action Plan Results IAW WO 02-001917-Closed No sampling plan. Inspection and Sampling plan Field Activity N/A step #6

6. At nozzle #2, video examination with audio dubbing from the top looking for evidence of wastage (360 degrees around the nozzle).

results of any step of the inspection and 000 Mark McLaughlin Video, "Root Cause Video Of Nozzle #3 and Adjacent Nozzles, 3/13/02 - PM to 3/14/02 - AM completed and provided to the NRC (DB Tape #A2)

NRC - Me1 Holmberg Dale Miller 6/11/2002 9:23:40 AM Page 7 of 55

Tracking Issue Number Date Issue Category/

ECD Group/Lead Response CR Initiated Status and Number CRAIT-0019 3/14/2002 Me1 Holmberg's request is to be provided the Request Action Plan Results IAW WO 02-001917-Closed No results of any step of the inspection and sampling plan. Inspection and Sampling plan Field Activity N/A step #8

8. Video examination of nozzle #2, after sample removal, as performed in Step 6.

000 Mark McLaughlin Video, "Root Cause Video of Nozzle #3 and Adjacent Nozzles, 3/13/02 - PM to 311 4/02 - AM completed and provided to the NRC (DB Tape #A2)

NRC - Me1 Holmberg Dale Miller CRAIT-0020 3/14/2002 Me1 Holmberg's request is to be provided the results of any step of the inspection and sampling plan. Inspection and Sampling plan step #9

9. Any signs of wastage between nozzle #2 and the penetration should be characterized by feeler gauge measurements (or whatever method is most practical) to establish the width and depth of the cavity. If possible, retrieve samples from the nozzle #2 cavity.

Characterize them (important physical information includes color, size, shape, and adherency).

Note: If the above examination shows that the areas of wastage on the top and bottom of the vessel head are not vertically aligned, the Root Cause Team should be notified immediately to determine if further examination is required.

NRC - Me1 Holmberg Reauest Action Plan Results IAW WO 02-001 91 7-ODen No 000 Field Activity N/A Mark McLaughlin Boron sample retrieved from nozzle #2 in location between nozzles #9 and #21.

Samples were placed in a small bag and stored in a black barrel north of the reactor headstand. Feeler gage readings cannot be taken until more insulation is removed.

Dale Miller 6/11/2002 9:23:40 AM Page 8 of 55

Tracking Issue Number Date Issue Category/

ECD GrouP/bad Response CR Initiated Status and Number CRAIT-0021 311 412002 Me1 Holmberg's request is to be provided the Request Action Plan Results IAW WO 02-001917-Closed No results of any step of the inspection and sampling plan. Inspection and Sampling plan Field Activity NIA step #10

10. Laser profile of corroded area around nozzle #3.

~-

000 Mark Mcbughlin Performed laser profile utilizing FTl's equipment around nozzle #3 from the top of the service structure. The data was sent to Lynchburg via the T1 line. A model was generated and copies of the model were downloaded to Lynchburg design engineering for use in finite element modeling conducted in Lynchburg. The model data has also been supplied to nozzle # 3 engineering team on site at Davis-Besse.

NRC - Me1 Holmberg Dale Miller CRAIT-0022 3/14/2002 Me1 Holmberg's request is to be provided the results of any step of the inspection and sampling plan. Inspection and Sampling plan step #11

11. Take dimensions of corroded area around nozzle #3 using the reference tool to fully characterize the cavity area.

NRC - Me1 Holmberg Request Action Plan Results IAW WO 02-001917-Closed No Field Activity N/A 000 Mark McLaughlin An inspection found a material void at the interface of Nozzle #3 and the vessel head. The void on the downhill side of Nozzle #3 extends approximately 6 inches towards Nozzle #11 and is approximately 5 inches wide at the widest part (a triangular shape). At the back of the void, there is some undercutting that is about 1 112 inches tall and approximately 2 inches from nozzle #11. There is approximately 8 inches between Nozzle #3 and Nozzle

1. 11. The walls of the cavity are steep with a 75 to 90 degree angle. The void is equivalent to 40 pounds of carbon steel.

The axial flaws were about 3 inches long with approximately 1.2 inches above the weld.

Dale Miller 6/11/2002 9:23:40 AM Page 9 of 55

Tracking Issue Number Date Issue Category/

ECD GrouPIaad Response CR Initiated Status and Number CRAIT-0023 3/14/2002 Me1 Holmberg's request is to be provided the results of any step of the inspection and sampling plan. Inspection and Sampling plan step #12

12. Take thickness measurements of the cladding with dial caliper (approximately 2 inches outward from the nozzle bore).

NRC - Me1 Holmberg Reauest Action Plan Results IAW WO 02-001917-Closed No 000 N/A Field Activity Mark McLaughlin A measurement reference tool and cladding measurement tool was fabricated to facilitate data gathering.

M&TE DD10014 Cal due date 08-02-02.

Dimensions taken by Walt Query on 3-15-02 Dale Miller CRAIT-0024 3/14/2002 Request for informatin on Containment Air 3/14/2002 Request Provided NRC - Doug Simpkins a copy Closed No Cooler Cleaning prior to 1998 and also where was this information captured prior to NOMS?

External Cleaning History document written by None of PCAQR 92-0072 and a copy of CAC Interface Jon Otermat.

Aaron Bless NRC - Doug Simpkins Aaron Bless CRAIT-0025 3/14/2002 Request for informatin on Rad Monitor Alarms 3/14/2002 Request I stated to NRC - Doug Simpkins that Closed No prior to 1998 and also where was this information captured prior to NOMS?

External information (filter change on Radiation None prior to 1998 (prior to NOMS) that Monitors) was kept manually in hand written log books, and that the most accurate computer search that could be performed is an NRM records search for these past RO Logs. After the RO Logs were obtained an individual would have to read through the logs to obtain dates of filter changes performed on Radiation Monitors. I also stated that there have been other manual logs kept, however the RO Logs would be the most accurate. He requested no additional information.

Interface Aaron Bless NRC - Doug Simpkins Aaron Bless 6/11/2002 9:23:40 AM Page 10 of 55

Tracking Zssue Category/

CR Initiated Number Date Issue ECD Group/Lead Response Status and Number CRAIT-0026 3/13/2002 NRC Interview with Root Cause Team 311 412002 Interview Technical discussion on Root Cause Closed No External corrosion issue and how the team N/A Interface Dave Gudger member Steve Hunt, Dominion Engineering Team's approach to the Boric Acid derived their approach. The Root Cause Team Timeline of Events was shared with the NRC to facilitate this discussion. Additionally, discussed was the teams approach to sample requests and evidence control. The Evidentuary Request List was use to facilitate this point, which this list provides greater detail than the Integrated Investigation Team Daily StatuslPlan. The NRC requested copies of this information.

Evideciary List (rev 4) and Timeline (Rev

3) were provided.

NRC - Me1 Holmberg Steve Hunt CRAIT-0027 311 412002 NRC Interview with Mike Hacker, UT-Level 111 3/14/2002 Interview Technical discussion with Me1 Holmburg Closed No External UT examination and signature N/A Interface Dave Gudger Framatome ANP expert.

~

and James Davis on explanation of the charactization results. The Davis Besse 13RFO CRDM Nozzle Examination Report dated March 1 1, 2002, Revision 1 was utilized and a page by page review was conducted with emphasis on understanding characterization results and differentiation details. Revision 1 of the UT report was provided to NRC.

NRC - James Davis Mike Hacker CRAIT-0028 3/14/2002 Briefing from Mark McLaughlin on Data 3/15/2002 Interview Duplicate item - Refer to CRAIT-0032 Closed No External N/A Interface Gathering Plan Items #15 and #16.

for resolution.

NRC - Me1 Holmberg Dave Gudger Dale Miller 6/11/2002 9:23:41 AM Page 11 of 55

Tracking Issue Number Date Issue Category/

ECD GrouPlhad Response CR Initiated Status and Number CRAIT-0029 3/14/2002 Requested copy of EPRl Guidelines on Boric 3/14/2002 Request NMAC Boric Acid Corrosion Guidebook Closed No External EPRl Boric Acid Corrosion Guidebook, N/A Interface Revision 1 Acid Corrosion Control Dale Miller Both books provided to the NRC New copy of Rev 1 provided to the NRC 3/18 including Appendix.

NRC - Me1 Holmberg Dale Miller CRAIT-0030 3/14/2002 Requested RPV Head 12 RFO Inspection 3/15/2002 Request Color Copy of RPV Head 12 RFO Closed No External one color copy sheet from Serial 2744.

N/A Interface Results (Color Copy)

Inspection Results Diagram, NRC - Me1 Holmberg Dave Gudger Dave Gudger CRAIT-0031 3/14/2002 Reauested CODV of characterization of 3/15/2002 Reauest Color CODY of the Dicture/diaaram ItOD Closed No wastage area %rounding nozzle penetration #3 down view) with bbttom up UT data '

External sheet provided.

Interface N/A NRC - Me1 Holmberg Dave Gudger Dave Gudger CRAIT-0032 3/14/2002 Requested Interview with Mark McLaughlin to 3/15/2002 Interview Discussion was held with Me1 Holmberg Closed No discuss Quarantine Area Inspection and Sampling Plan: Items #15 and #16.

Fie'd Activity Inspection and Sampling Plan Items #15 N/A and Jim Davis over the Quarantine Area MarkMcLiughG and #16, as well as Nozzle #2 plan.

Draft plan provided for Nozzle 2.

(CRAIT-0074 tracks Nozzle 2 plan developement)

NRC - Me1 Holmberg Dave Gudger 6/11/2002 9:23:41 AM Page I 2 of 55

Tracking Issue Number Date Issue Category/

ECD GroUP/bad Response CR Initiated Status and Number CRAIT-0033 311 512002 Update Root Cause Team Timeline Request Provide daily updates of Root Cause Open No External N/A Interface On-Going Timeline (Loehlein)

Timeline of Key Events Related to Reactor Vessel Head Boric Acid Wastage - Rev. 4, 3/14/02 to NRC 311 4/02 Timeline of Key Events Related to Reactor Vessel Head Boric Acid Wastage. Rev. 5, 3/15/02 to NRC 311 6/02 Timeline of Key Events Related to Reactor Vessel Head Boric Acid Wastage. Rev. 6, 3/22/02 to NRC 3/22/02 NRC - Ron Gardner Dave Gudger CRAIT-0034 311 512002 Update Quarantine Area Inspection and Sampling Plan NRC - Ron Gardner Request Provide daily updated Quarantine Area Open No Inspection and Sampling Plan (Dale Wuokko)

N/A Interface On-Going Quarantine Area Inspection and Sampling Plan dated 3/13/02 to NRC 311 5/02.

Quarantine Area Inspection and Sampling Plan dated 3/15/02 to NRC 311 5/02.

Quarantine Area Inspection and Sampling Plan With Reactor Head Nozzle Diagram dated 3/15/02 to NRC 311 6/02.

6/11/2002 9:23:41 AM Page 13 of 55

Tracking Issue Number Date Issue Category/

ECD GroUPIbad Response CR Initiated Status and Number CRAIT-0035 311 512002 Update of Root Cause Team Evidentuary List Request Integrated Plan to Inspect and Evaluate Open No

~xternal-Rev 3/14/02 2:4i PM to NRC 311 a NIA Interface On-Going (Loehlein)

Nozzle #2 Before and After Removal Examination of CRDM Nozzle #3 dated 311 2 to NRC 311 a Integrated Plan (Field/Engineering/Root Cause) To Inspect and Evaluate Nozzle

1. 2 Before and After Removal dated 311 5/02 to NRC 311 8/02 NRC - Ron Gardner Dale Miller CRAIT-0036 3/15/2002 Update Root Cause Team Interview List Request Provide daily updated Root Cause Team Open No Extern a I N/A Interface On-Going Interview List (Ackerman)

New Personnel Interviewed List dated 311 4/02 to NRC 311 4/02 New Personnel Interviewed List dated 3/15/02 to NRC 3/15/02 New Personnel Interviewed List dated 311 6/02 to NRC 311 6/02 New Personnel Interviewed List dated 311 8/02 to NRC 311 8/02 (a:42 AM) to NRC 311 9/02 Personnel Interviewed List dated 311 9 Personnel Interviewed List dated 3/21 (7:14 AM) to NRC 3/21/02 NRC - Ron Gardner

Tracking Issue Number Date Issue Category/

ECD GrouPibad Response CR Initiated Status and Number CRAIT-0037 3/14/2002 NRC Interview with Andrew Siemaszko, Davis-3/15/2002 Interview RCS system engineer provided overview Closed No Besse RCS System Engineer

- of the head leakage and cleanup effort External history.

Interface N/A NRC - Me1 Holmberg Dave Gudger Andrew Siemaszko CRAIT-0038 3/13/2002 Root Cause Team (Chuck Ackerman) requested the following documents:

PCAQ 1998-001 3 PCAQ 1988-0496 PCAQ 1996-0650 PCAQ 1994-091 2 PCAQ 1988-0494 PCAQ 1994-0195 CR 1998-0020 CR 2000-1210 CR 2000-4138 CR 2000-0039 SEN 6 SEN 18 Request Documents provided to the Root Cause Closed No External N/A Interface R. J. Slyker Team and the NRC AIT on 3/14/02.

IN 86-108 Supp 1,2,3 Root Cause Team R. J. Slyker CRAIT-0039 3/15/2002 NRC Interview with Ed Chimahusky, Davis-3/15/2002 Interview RCS system engineer provided overview Closed No External history during the time as system N/A Interface engineer.

Besse Former RCS System Engineer of the head leakage and cleanup effort Dave Gudger NRC - Me1 Holmberg Ed Chimahusky 6/11/2002 9:23:41 AM Page 15 of 55

Tracking Issue Number Date Issue Category/

ECD GrollPlkad Response CR Initiated Status and Number CRAIT-0040 3/15/2002 Ron Gardner requested the following 3/16/2002 Request Copy of PCAQ 89-0058 previously Closed No External N/A Interface R. J. Slyker provided to NRC on 3/14/02.

Provided copies of SO 87-15, NG-EN-00324 R02, PP-1102.10 R16; DB-OP-06903 R5 documents:

PP 1102.10 - copy when walkdown was put into procedure. Also current copy of procedure (which is now DB-OP-06903).

Standing Order 87-1 5 NG-EN-00324 NG-EN-00324 RO/C2 and R1/C2 complete copies to NRC 3/19/02 PCAQR 89-0058 NRC - Ron Gardner R. J. Slyker CRAIT-0041 3/15/2002 Chuck Ackerman requested copies of all RCS 3/18/2002 Request System performance books were not Closed No System Performance Books prior to A.

Siemanzko taking over as sytem engineer.

External was retreived that was provided.

N/A provided. Some selected information Interface R. J. Slyker Root Cause Team Dale Miller CRAIT-0042 311 5/2002 Chuck Ackerman requested copies of the 3/16/2002 Request List of documents were provided to NRC Closed No External N/A Interface following documents:

PCAQ 1990-0120

~

R. J. gyker and RC teams on 311 8/02.

PCAQ 1998-1 963 PCAQ 1991 -0400 PCAQ 1992-0139 PCAQ 1993-0175 PCAQ 1993-01 87 CR 2001-0890 TM 1998-0036 Root Cause Team R. J. Slyker 6/11/2002 9:23:41 AM Page 16 of 55

Tracking Issue Number Date Issue Category/

ECD GrouPlhad Response CR Initiated Status and Number CRAIT-0043 3/15/2002 Reactor Vessel Head Nozzel#3 Wastage 3/16/2002 Voluntary Reactor Vessel Head Nozzle #3 Closed No NIA Cavity Sketches received in compliance unit being provided to root cause team and NRC External AIT team.

Interface R. J. Slyker Wastage Cavity Sketches provided to NRC AIT Team and Root Cause Team AITRD-213 is a Section view on centerline of the Nozzle 3 cavity dated 311 4 AITRD-214 is a plan view of the cavity that provides dimensions dated 3/15 R. J. Slyker CRAIT-0044 3/16/2002 Verify penetration numbers in 1998 inspection 3/16/2002 Request Meetings with AIT Team on 3/21 and Closed No Root Siesmaszko and Dave Geisen, N/A video. Specifically nozzle 3 and 11 on tape.

3/22 (Andrew Siemaszko, then Andrew Steve Loehlein respectively) indicated that the nozzles could not be individually identified by specific location because of the video was not consistent in identifying the mouseholes and how the orientiation of the entry.

See Serial 2744 (AITRD-0012)

NRC - Me1 Holmberg Rod Cook CRAIT-0045 3/16/2002 EFPYs for B&W plants.

3/16/2002 Request Provided Table 2-1 from EPRl document Closed No 1006284, PWR Materials Reliability Cause Droaram Resoonse to NRC Bulletin N/A steve Lo&lein 200.1-01 (MRP-48). The table provides the B&W plants EFPYs.

NRC -James Davis Christine King CRAIT-0046 3/16/2002 Final version of the white paper on 3/18/2002 Request Morphology of Precipitated Boron Closed No "Morphology of Precipitated Boron Compounds" Source: Steve Hunt, Dominion Root Cause Engineering, Inc. provided 3/19/02.

N/A Engineering Steve Hunt Compounds white paper from Dominion NRC -James Davis Steve Hunt 6/11/2002 9:23:41 AM Page 17 of 55

Tracking Issue Number Date Issue Category/

ECD GrouP/aad Response CR Initiated Status and Number CRAIT-0047 3/1 5/2002 Bill Bateman requested chemical equation for 3/15/2002 Request Response provided : General equation Closed No Root Cause corrosion wastage.

N/A Todd Pleune interaction of boric acid with carbon steel.

CRAIT-0143 is a duplicate plus a description of the mechanism of NRC - Bill Bateman Dale miller CRAIT-0048 3/15/2002 What are the details of the head construction?

3/20/2002 Question Preliminary information provided to AIT Closed No Is it a 6 or 8 leaf head? Were penetrations 2 or 3 close to any weld?

Engineering construction, sulfer content, and 308 N/A What is the actual composition of the head material in particular, the sulfur content?

How was the head clad applied? Is the material 304, 308 or 309 SS/ What is the sulfur content?

Need CMTRs for material.

on 3/16 and on 3/20 provided head clad. CMTRs with location map Prasoon Goyal provided to James Davis 3/20/02 Closure head assembly drawing also provided.

NRC - Me1 Holmberg Dale Miller CRAIT-0049 3/15/2002 Which nozzles were of the heat of material from Huntington?

Question A table "CRDM Nozzle heats at B&W-Closed No Engineering Goyal. Stamped proprietary since it N/A Design Plants" was provided by Prasoon listed all plants. Huntington Alloys was Prasoon Goyal heat number prefixed with "NX."

NRC - Me1 Holmberg Dale Miller

- m 6/11/2002 9:23:41 AM Page I8 of 55

Tracking Issue Number Date Issue Category/

ECD GrouPIkad Response CR Initiated Status and Number CRAIT-0050 3/16/2002 Update CRDM Sequence of Events Request Provide daily updated CRDM Sequence Open No External N/A Interface On-Going of Events (Ackerman)

Sequence of Events (Hard copy and Floppy) dated 311 5/02 to NRC 311 5/02 Sequence of Events (Hard copy and Floppy) dated 311 6/02 to NRC 3/16/02 Sequence of Events (Hard copy and Floppy) dated 3/18/02 to NRC 311 8/02 Sequence of Events (Hard copy and Floppy) dated 3/19/02 to NRC 311 9/02 Sequence of Events (Hard copy and Floppy) dated 3/21/02 to NRC 3/21/02 NRC - Ron Gardner CRAIT-0051 3/16/2002 NRC request for the following documents and Request Copies of the following provided to the Closed No External N/A IN 96-032 Interface IN 96-032 (Included in PCAQR 96-1018) responses:

NRC - AIT R. J. SlykG IN 01-005 IN 01-005 IN 82-006 IN 82-006 NRC - Ron Gardner Dale Miller 6/11/2002 9:23:4I AM Page 19 of 55

Tracking Issue Number Date Issue Category/

ECD GrouP/aad Response CR Initiated Status and Number CRAIT-0052 3/6/2002 Request of roll torgue traces for each penetration. (C RDN-0001)

NRC - Me1 Holmberg Request Provided request to Rick Garrison on Closed No Field Activity operation and does not have traces. He N/A 3/6/02. The torqueing is a manual Mark McLaughlin will pull together information on the torquing of the nozzles from those who performed the torque operations.

Information from FTI personnel that performed roll operation rcvd. and distibuted.

Dale Miller CRAIT-0053 3/6/2002 Requested a copy of roll procedure. (CRDN-0002)

NRC - Me1 Holmberg Request Framatome procedure, "CRDM Roll Closed No Field Activity 10/22/01 provided to NRC on 03/20/02.

N/A Expansion"03-501 2489-01 dated Mark Mclaughlin Dale Miller CRAIT-0054 3/6/2002 How much was cut on Control Rod Drive Question Rick Garrison has the question for Closed No Nozzle #3?

response.

Field Activity N/A (CRDN-0003)

MAMcLaughlin 2.77" to go given to Me1 Holmberg 3/7.

NRC - Me1 Holmberg Dale Miller CRAIT-0055 3/6/2002 Provide Drawina of the nozzle dimensions and 3/19/2002 Reauest Supplied Me1 Holmberg with the Closed No of the head to &ow the bores. (CRDN-0004)

"Closure Head Assembly Drawing" (M-External 503-127-3) on March 6th.

Interface N/A Rod Cook Provided M-503-212-1 and M-503-213-2 to Me1 on 3/7/02 NRC - Me1 Holmberg Dale Miller / Rod Cook 6/11/2002 9:23:41 AM Page 20 of 55

Tracking Issue Number Date Issue Category/

ECD Group/Lead Response CR Initiated Status and Number CRAIT-0056 3/6/2002 Requested Head Drawing for bore for nozzle.

3/19/2002 Request Nozzle Dimensions (Attachment 2) from Closed No External N/A Interface CRDM Nozzle Bore Dimensional Rod Cook Analysis !=TI Document 51 -501 3435-02 dated July 24, 2001.

Serial 2731.

(CRDN-0005)

Both above given to Me1 Holmberg on March 6th.

NRC - Me1 Holmberg The following three drawings were given to the NRC on March 7th:

7749-M-503-213-2 Control Rod Mechanism Housing 7749-M-503-212-1 Closure Head Sub Assembly M-503-767-2 CRDM Nozzle ID Temperbead Weld Repair DB-1 Rod Cook CRAIT-0057 3/6/2002 Requested 2 copies of the video inspections of Request A video from evening shift on March 6th Closed No the void. Need 1 more copy for Doug Simpkins. (CRDN-0008)

Activity been given to the NRC, Me1 Holmberg N/A through morning shift on March 7th has Mark McLaughlin (Video DB#l l )

Also, 4 picture views, top down, of nozzle penetration 3 have been given to Me1 Holmberg.

Final copy provided to Doug Simpkins on 3/9/02.

NRC - Me1 Holmberg Dale Miller CRAIT-0058 3/6/2002 Requested the performance demonstration Request report "Demonstration of Axial and Closed No report for ultrasonic testing (EPRI report).

(CRDN-0009)

Engineering Oconee CRDM Cracked Nozzle N/A Circumferential Blade Probes on Specimens" to NRC 3/18/02 Prasoon Goyal NRC - Me1 Holmberg Dale Miller Page 21 of 55 6/11/2002 9:23:42 AM

Tracking Issue Number Date Issue Category/

ECD GrouP/kad Response CR Initiated Status and Number CRAIT-0059 3/6/2002 NCR (FTI) on roll expansion (CRDN-0010)

Request No Framatone NCR was written Closed No Activity Nozzle 3 (per Travis of FTI). A NCR N/A specifically against the roll expansion for Mark McLaughlin was written against Nozzle 3 after machining problems were identified.

This is FTI NCR 6014069.

NRC - Me1 Holmberg Dale Miller CRAIT-0060 3/6/2002 Request for the NDE reports. UT results for Request Full UT report (rev 0) provided on Closed No K i d Activity N/A 3/12/02.

Nozzles 1, 2, 3, 5, 47, 58 (Colors and gray scale) (CRDN-0011)

Mark McLaughlin Revision 1 provided 3/14/02.

NRC - Me1 Holmberg Rod Cook CRAIT-0061 3/8/2002 Conduct a visual head inspection after all Request boron is off the head prior to replacing the head per NRC telecon 1400 on 3/8/02.

(CRDN-0014)

Mark McLaughlin Field Activity NRC - Me1 Holmberg Open CRAIT-0062 3/8/2002 Provide NRC D. Picket with docketed histoty Request Information was provided to NRC D.

Closed No of head inspections from 1998 and 2000 (requested by 03/09/02). (CRDN-0015)

External N/A Picket (copy of Serial 2741)

Interface DRWuokko NRC - D. Picket DRWuokko CRAIT-0063 3/8/2002 Provide NRC D. Pickett with Generic Letter 88-Request CRAIT-0137 for closure K G i t igai0-T 05 Program information regarding aspect of preventing contact of boron with ferretic metals (provide during investigation). (CRDN-Team Leader 001 6)

Fred VonAhn CRAIT-0137 is a duplicate NRC - D. Picket Dale Miller Closed No N/A 6/11/2002 9:23:42 AM Page 22 of 55

Tracking Issue Number Date Issue Category/

ECD GrouPlaad Response CR Initiated Status and Number CRAIT-0064 3/8/2002 Quantify flange leak flow rates identified during 12RFO (2000) during the investigation.

(CRDN-0017)

CRAIT-0136 is a duplicate NRC - Me1 Holmberg CRAIT-0065 3/6/2002 Perform metalurgical analysis on nozzle 3.

(CRDN-0018)

NRC - A. Hiser Request See CRAIT-0136 Closed No Investigation N/A Team Leader Fred VonAhn Dale Miller

~ _ _ _ _ _ _

Request Per Fred Von Ahn 3/27, Todd Pluene is Open No Cause be performed.

N/A putting together a plan for analyses to Todd Pleune Dale Miller CRAIT-0066 12/28/2001 Provide copies of commitments made to the Request E-mailed a copy of Serial 2747 to M.

Closed No NRC for performing vessel head examinations. (CRDN-0019)

External inspection).

N/A Holmberg on 12-18-2001 (pre-IS1 Interface Rod Cook All Bulletin responses were provided to the AIT NRC - Me1 Holmberg Rod Cook Page 23 of 55 6/11/2002 9:23:42 AM

Tracking Issue Number Date Issue Category/

ECD GrolcP/kad Response CR Initiated Status and Number CRAIT-0067 3/8/2002 Determine if GL 88-05 or DB response to GL Request Review of GL 88-05 and the DBNPS Open 88-05 required no boron on head. (CRDN-responses (Serials 1527, dated 5/27/88; 0023)

External and Serial 1-885, dated 6/26/89) did not reveal any requirement to remove boric acid from any surface once it was found. Evaluation of the presence of the boric acid was suggested, however, subsequent removal of the observed boric acid was not required, either by the GL or the responses to the GL.

Comparison of GL to NG-EN-00324, Rev. 2 was performed and determined that the aspects of the GL were incorporated; however, some previous evaluations related to the reactor head that were performed pursuant to the NG lacked necessary rigor to fully address the issue.

~

Interface Rod Cook Rod Cook NRC - Ron Gardner CRAIT-0068 3/6/2002 Request 3 copies of the 3/7 - 318 video.

Request A copy of was provided on by DLMiller Closed No CRAIT-0069 2/26/2002 (CRDN-0024)

NRC - Doug Simpkins Field Activity Mark McLaughlin N/A Dale Miller Provide pictures of selected penetration from Request Provided copies of pictures for all Closed No visual exam..(CRDN-0029) penetrations on 3/1;02 to AI Hiser and Field Activity

~~l Holmberg, N/A MAMcLaughlin Pictures found on Compact Disc "Bare Head Video Inspection" NRC - AI Hiser Mark McLaughlin 6/11/2002 9:23:42 AM Page 24 of 55

Tracking Issue Number Date Issue Category/

ECD GrouPlbad Response CR Initiated Status and Number CRAIT-0070 3/1/2002 Provide UT Pictures overlaying bottom up Request Provided Full UT Inspection Reports Closed No inspections and top down inspections.

Field Activity N/A (Rev.0 and Rev. 1) to Mel.

Note: Informed Me1 that this would probably be MAMcLaughlin See CRAIT-0060 part of the Level Ill's report when the results of the inspections were finalized. He understood this may be the "delay" he was seeing.

(CRDN-0031)

NRC - Me1 Holmberg Rod Cook CRAIT-0071 3/6/2000 Need copy of Repair Drawing showing Request Rick Garrison provided a copy of Closed No dimensions for repairs. (CRDN-0032)

Field Activity "CRDM Nozzle Temperbead Weld N/A Framatome Drawing 5015339E, Rev. 0 Repair, DB-1." R. Cook located source in DBNPS Records and provided the Davis-Besse drawing.

Davis-Besse Drawing M-503-767-2.

To Me1 on 3/7/02.

MAMcLaughlin NRC - Me1 Holmberg Rod Cook CRAIT-0072 311 412002 Provide whitepaper on proposed control rod 3/15/2002 Request Email to SPS and request it be Closed No drive relocation plan to NRR Reactor Systems Branch. (CRDN-0035)

External Reactor Systems Branch.

N/A (MKL)

Interface MKL Emailed to NRC 311 8/02.

see CRAIT-0058

~~

forwarded to appropriate individual in M. Leisure telecon to follow.

NRC - Conference Call M. Leisure CRAIT-0073 3/14/2002 Obtain NRR review of Steps 13 through 22 of 3/15/2002 Request Emailed to SPS 3/1501018 requesting Closed No Quarantine Area Inspection and Sampling Plan.

(CRDN-0036)

Field Activity N/A (DRW)

M, MTGughlin Bill Bateman verbal concurrence CRAIT-0145 is a duplicate 1600.

Bill Bateman review.

obtained Q Conference call 3/15/02 Q telecon to follow.

NRC - Conference Call 6/11/2002 9:23:42 AM Page 25 of 55

Tracking Issue Number Date Issue Category/

ECD Group/Lead Response CR Znitiuted Status and Number CRAIT-0074 3/14/2002 Provide integrated Quarantine Area Inspection 311 8/2002 Request Integrated Plan to Inspect and Evaluate Closed No and Sampling Plan for Nozzle 2 to NRR and M. Holmberg for review and comment. Plan is NIA to include both pre-and post-nozzle removal.

(CRDN-0037) see CRAIT-0144 for closure Nozzle #2 Before and After Removal Rev 311 4/02 2:41 PM to NRC 311 8 Root 'ause S. Loehlein (DRW) also see CRAlT 35 NRC - Conference Call Dale Miller CRAIT-0075 311 412002 Provide record of iron found in containment 3/18/2002 Request From Todd Pleune in Chemistry (~8288). Closed No RE filter to NRR. (CRDN-0038)

Cause Plant Issue sheet provided to NRC AIT N/A

s. Loehlein on 3/18 that identifies clogging of RE4597AA and RE4597BA after Cycle 12 mid-cycle outage (no date on sheet)

Provided by Chuck Ackerman AIT was asked at daily brief on 311 8 whether any further info was required, and they replied "no".

Also see CRAIT-0090 (MKL)

NRC - Conference Call M. Leisure CRAIT-0076 3/14/2002 Provide details of Frarnatome repairs 311 512002 Request C. Bowles provided non-proprietary Closed No performed on French reactor vessels (including dates). (CRDN-0039)

Engineering Summary ernailed to NRC 3/16/02 Q N/A (MKL) summary.

Evalutation

0946, J. Powers CRAIT-0146 is a duplicate DRW e-mailed a duplicate to the NRC on 3/17/02 Q 945AM NRC - Conference Call M. Leisure 6/11/2002 9:23:42 AM Page 26 of 55

Tracking Issue Category/

CR Initiated Number Date Issue ECD Grollp/Lead Response Status and Number CRAIT-0077 311 412002 Hold conference call with NRWEngineering 311 512002 Request Conference call held with NRC 311 5/02 Closed No Evaluation Team regarding stress analysis.

NIA (Set for OW1 5 @ 11 00) (CRDN-0042)

(MAR)

@ 1100.

Telecon written documenting call.

Engineering J. Powers NRC - Conference Call M. Riemer CRAIT-0078 311 512002 Provide NRC with preliminary root cause 3/20/2002 Request AIT was provided the Probable Cause Closed No N/A report. (CRDN-0043)

Root Cause (DRWI Summary Report on 3/22/02 at 1430.

\\-

I NRC - Conference Call S. Loehlein Rod Cook CRAIT-0079 311 512002 Provide stress/strain curve for SS308 clad 3/16/2002 Request D. Wuokko emailed to NRC 3/15/02 Q Closed No material to NRC. (CRDN-0045)

(DRW)

CRAIT-0148 is a duplicate Engineering 1908.

Also provided to the AIT J. Powers N/A NRC - Conference Call M. Leisure CRAIT-0080 3/15/2002 Provide NRC (inc. Bill Bateman) with plan to 3/16/2002 Request Measurements are to be taken on a one Closed No obtain clad thickness UT measurements.

(CRDN-0046)

Engineer!ng concurred with this approach in a N/A inch grid. Bill Bateman (NRR) conference call 311 6 @ 1400.

"Reactor Vessel Head ID Clad Thickness Measurements in Region of Wastage Between Nozzles 3 and 11" completed on 311 7/02 Evalutatlon J. Powers (MKL)

NRC - Conference Call M. Leisure CRAlT-0081 3/15/2002 Provide NRC (Carol Moyers) brand name of 3/16/2002 Request Per 1000 3/16 internal conference call, Closed No dental mold material being used to obtain impressions of cavity. (CRDN-0047)

Activity faxed to Licensing to be forwarded to N/A (MKL)

Mark McLaughlin NRC.

brand name is "Kerr". MSDS to be MKL Emailed to NRC 3/18/02 (telecon RAS-02-00126)

NRC - Conference Call Mike Leisure 9

6/11/2002 9:23:42 AM Page 27 of 55

Tracking Issue Number Date Issue Category/

ECD GrouP/bad Response CR Initiated Status and Number CRAIT-0082 3/15/2002 Provide stress analysis clad thickness 3/16/2002 Request M. Leisure Emailed scanned data to Closed No micrometer measurement data to NRC.

(CRDN-0048)

Field Activity Telecon to follow.

NIA (MAR)

Mark McLaughlin NRC 3/16/02 @ 0950.

NRC - Conference Call M. Leisure CRAlT-0083 3/16/2002 Discuss with NRC what clad thickness value is 3/18/2002 Clarification Per fred VonAhn on 3/27, 0.297 inches appropriate for use in stress analysis:

minimum measured value or some statistically derived value? (CRDN-0050) is being used which is an average value Engineering from the UT measurements.

Evalutation J. Powers NRC - Conference Call Dale Miller CRAIT-0084 3/16/2002 Provide NRC with details on our Dlans for use 3/18/2002 Question Serial 1-1267 is beina submitted which of PSA to evaluate significance df event.

(CRDN-0051)

Engineer'g submittal per the CAL.

Evalutation outlines the plan andschedule for NRC - Conference Call J. Powers Closed No N/A Open CRAIT-0085 3/16/2002 Provide data on unidentified and identified leakage that Andrew Siemaszko (System Engr) has Request External Interface Duplicate - close to CRAIT-0088 Closed No N/A NRC - Ron Gardner Aaron Bless Dale Miller CRAIT-0086 3/16/2002 Find and Drovide Dictures before 1 ORFO that Reauest are referenced in the Service Structure access opening modification (taken by "high powered cam era")

External Interface Aaron Bless NRC - Ron Gardner The terminology "high powered camera" Closed No was found in the void request for Modification 90-0012 written by Ed N/A Chimahuskey. The cameras referred to were video cameras per Ed. Videos have been located that reflect head conditions in 8R, 10R, 1 lR, and 12R.

Dale Miller 6/11/2002 9:23:42 AM Page 28 of 55

Tracking Issue Number Date Issue Category/

ECD GrouPIbad Response CR Initiated Status and Number CRAlT-0087 3/16/2002 An interview was requested with Chuck 311 11 602 Interview The interview discussed if cleaning of Closed No Cause presence of iron on the RE filter N/A Ackerrnan the Containment air Coolers or the elements had been an issue.

Plant Issue sheet provided to NRC on 3/18 that identifies clogging of RE4597AA and RE4597BA after Cycle 12 mid-cycle outage (no date on sheet)

Provided by Chuck Ackerman Chuck Ackerrnan NRC - Me1 Holmberg Dale Miller CRAIT-0088 3/15/2002 Doug Simpkins requested information about 3/16/2002 Request Provided NRC - Doug Simpkings with Closed No RCS leakrate related data.

Electronic copies of CTMT Normal RCS Leakage Word Document, SP 3357 Leak Rate Data Suggested Change Excel Spreadsheet.

Doug Simpkins was provided a CD which contains the following files pertaining to RCS leakage:

Crdte cycle 09.xls Crd-te cycle 10.ds Crd-te cycle 11.XIS Crd-te cycle 12.ds Crd-te cycle 13.ds Gsa Cycle 11.XIS Gsa Cycle 12.XIs gsa Cycle 13.ds RE 4597filter.d~

RE 4597filter.JPG External Sump Excel Spreadsheet (2 copies),

None Interface Aaron Bless NRC - Doug Simpkins close per Doug Simpkins to Dale Miller on 3/25 Aaron Bless 6/11/2002 9:23:42 AM Page 29 of 55

Tracking Issue Number Date Issue Category/

ECD GrouPikad Response CR Initiated Status and Number CRAIT-0089 3/18/2002 Question what root cause methodology were 3/18/2002 Question Told Me1 we were using FENOC Root Closed No N/A we utilizing and what were are plan (was talking about a potential target of this week).

Cause Analysis Reference Guide (availble in root cause room). The bais for the guide was OE-907 (N" document on root cause). The guide does allow for other techniques such as TapRoot and KT. I also provided Me1 a copy of the Root Cause Plan I drafted for Steve Loehlein.

Root Cause Steve Loehlein NRC - Me1 Holmberg Chuck Ackerman CRAIT-0090 3/18/2002 We were discussion history of RE4597 rust 3/18/2002 Question I provided Me1 the Plant Issue item the Closed No and Me1 was looking for some additional information.

Cause engineers. The issue identifies, "Since N/A root cause team got from the RE system Steve Loehlein startup from the Cycle 12 mid-cycle outage, RE-4597AA and BA have exhibited a high rate of clogging their particulate filters due to excessive dust/rust particles suspended in the containment atmosphere."

Also see CRAIT-0075 Memo - S&L Dille to Berry "Particulates in Containment" to NRC on 3/18 NRC - Me1 Holmberg Chuck Ackerman CRAIT-0091 3/18/2002 Jim was looking for history of CRDM flanges 3/18/2002 Question Told Jim the CRDM flange information Closed No Root Cause base.

N/A and leakage experience.

On 3/19/02, Jim requested information on the gasket material and also mentioned a design change that was made to the flange.

~

Steve Loehlein collected thus far is in the timeline data 3/20/2002:

Jim Harris, Steve Corona, and Rod Cook met with Jim Davis to discuss CRDM flange gasket material, the flange detail change, and provided some other information on history of flange leakage as provided by Framatome.

NRC -James Davis Chuck Ackerman 6/11/2002 9:23:43 AM Page 30 of 55

Tracking Issue Number Date Issue Category/

ECD GrouPlaad Response CR Initiated Status and Number CRAIT-0092 3/18/2002 Me1 wants to know the estimated pounds of 3/20/2002 Request An estimate provided by the Root Cause Closed No N/A boric acid (actual data points) from the timeline of the key events related to reactor vessel head boric acid wastage.

Team of approximately 900 pounds was provided to Me1 Holmberg on 3/22/02 Root Cause Steve Loehlein NRC - Me1 Holmberg Dale Miller CRAIT-0093 3/18/2002 Provide an electronic CODV of Serial 2744 3/18/2002 Reauest NRC - Doua SimDkins was Drovided a Closed No copy of the-1 2 RFO Head Map via e-External mail on 3/18/02.

Interface N/A NRC - Me1 Holmberg Rod Cook Rod Cook CRAIT-0094 3/18/2002 Provide a Non-Proprietary picture or Request See CRAIT-0134.

representation of the nozzle 3 wastage area that can be used in the NRC Public Exit meeting and in their report duplicate to CRAIT-0134 External Interface D. H. Lockwood NRC - Ron Gardner Aaron Bless Closed No N/A CRAIT-0095 311 812002 Provide a short biography on each member of Request Biographies for members of the Root Closed No Root Cause N/A the Root Cause Team for evaluation of experience Cause Team were provided on 3/20/02

~~

Steve GehlGn-NRC - Me1 Holmberg Dale Miller CRAIT-0096 311 8/2002 What is the material composition of Nozzles?

3/20/2002 Question CMTRs with Location Drawing provided Closed No Provide CMTRs.

to James Davis 3/20/02 Engineering Evalutation N/A Also see CRAIT-0048 Prasoon Goyal NRC -James Davis Kevin Spencer 6/11/2002 9:23:43 AM Page 31 of 55

Tracking Issue Number Date Issue Category/

ECD GrouPibad Response CR Initiated Status and Number CRAIT-0097 3/18/2002 What is the status of PCAQR 96-0551, open Request The DBPRC Meeting history for Closed No or closed, with regard to Reactor Head Service Structure openings See Modification 94-0025 Cause the AIT on 3/16 N/A Modification 94-0025 was provided to PCAQR 96-0551 was closed 1/19/99. A follow up item is open to implement modification 94-0025 during 13RFO.

NRC - Ron Gardner See CRAIT-0104 Dale Miller CRAIT-0098 3/18/2002 What Root Cause methodology is being used?

Question The FENOC Root Cause guideline is Closed No N/A being used. A root cause plan was provided to the AIT on 3/18 (dated 3/18 Root Cause Chuck 7:40AM)

NRC - Ron Gardner Ackerman Dale Miller CRAIT-0099 3/18/2002 Requested Control Rod Nozzle Cracking 3/18/2002 Request Control Rod Nozzle Cracking White Closed No N/A White Paper Paper dated 5/8/96 provided to AIT External Interface NRC - Ron Gardner Parsoon Goyal Prasoon Goyal CRAIT-0100 3/1 5/2002 NRC Interview with Prasoon Goyal, DB Design 3/18/2002 Interview Design Engineer provided information Closed No Engineer and B&WOG Material Committee

~-.

on boric acid leakage historical issues, representative/MRP Alloy 600 Issue Task External head inspection & cleanning, procedural N/A Group Interface requirements, PRC modification review, Dave Gudger Boric Acid corrosion sources etc...

NRC - Me1 Holmberg Prasoon Goyal CRAIT-0101 3/18/2002 Request a copy of the QA 12RFO audit report 3/18/2002 Request QA Audit Report AR-00-OUTAG-01 and Closed No and checklists.

~

checklist.

Root Cause N/A NRC - Ron Gardner Steve Loehlein Chuck Ackerman 6/11/2002 9:23:43 AM Page 32 of 55

Tracking Issue Category/

CR Initiated Number Date Issue ECD GroW/kad Response Status and Number CRAIT-0102 3/18/2002 Requested video, pictures, and/or hands-on inspection of penetration #3 nozzeVevidence.

NRC - Me1 Holmberg Request External Interface Open No N/A Dave Gudger CRAIT-0103 3/18/2002 Requested RCS temperature and times Request temperature and pressure plots for Closed No associated with 200 - 400 degrees F conditions.

External retrieved from DADS provided to the N/A Also see CRAIT-0126 Dave Gudger heatups and cooldowns since 1998 Interface NRC on 3/22/02.

NRC -James Davis Dale Miller CRAIT-0104 3/18/2003 Requested PRC meeting minutes for MOD 94-3/19/2002 Request PRC database printout provided to NRC Closed No External (excerpts) for MOD 94-0025. No further N/A Interface action required.

0025 are complete and include the minutes Dave Gudger See also CRAIT-0097 NRC - Ron Gardner Dave Gudger CRAIT-0105 3/18/2002 Interview with Dan Haley, former Davis Besse 3/19/2002 Interview Interview w/ Dan Haley on 3/19/02 @

Closed No External during the time that he was the RCS N/A Interface Dave Gudger RCS System Engineer requested.

~

~ 0730 discussed Mod 94-0025 history system engineer (RFO 11 and 12).

NRC - Me1 Holmberg Dan Haley 4/11/2002 9:23:43 AM

Tracking Issue Number Date Issue Category/

ECD Grolcp/Lead Response CR Initiated Status and Number CRAIT-0106 3/18/2002 The annealing process temperatures for the CRD Nozzles appear to be incorrect, lower than specified for the material.

Also see CRAIT0132 NRC -James Davis CRAIT-0107 3/18/2002 Determine if EPRl documents on corrosion rate can be released for public disclosure.

3/19/2002 Clarification NRC Inspector, Jim Davis discussed his Open Yes observation with Prasoon Goyal, Davis Fyfitch, Framatone Engineering. The Prasoon Goyal annealing temperature has an affect on susceptibility of stress corrosion cracking. Heat #M3935 appears to be mostly affected as shown by nozzle leaking data in the Framatone CRDM Nozzle History report. However, the annealing temperature was determined to be consistently maintained above the minimum manufacturing requirement (1600 degrees F) during the fabrication process. Although it is valid that a lower temperature causes a higher susceptibility to stress cracking, the temperature is considered one of many factors and in of itself does not pose a short term concern. Nozzle #4 would be most susceptible to further cracking and should be monitored and assessed if long term usage is required.

Engineering Besse Materials Engineer and Steve CR 02-01 331 Steve Fyfitch Request Open Root Cause NRC - Ron Gardner Christine King CRAIT-0108 3/18/2002 Provide NRC with electronic copies of photos of Nozzle 46.

NRC - Conference Call Request The response to CRAlT -0159 closes Closed No Field Activity N/A this item per Me1 Holmberg.

M. McLaughlin Dale Miller 6/11/2002 9:23:43 AM Page 34 of 55

Tracking Issue Number Date Issue Category/

ECD GrouPlbad Response CR Initiated Status and Number CRAIT-0109 3/18/2002 PCAQR 94-0295 addresses commitment 3/19/2002 Request Provided TERMS package for Closed No A1 6892. The inspectors want to see the document for the commitment for A16892 that External the source document and "closure" NA "closed" the commitment.

Interface document for the commitment.

Commitment A 16892. This included Rod Cook NRC - Doug Simpkins Rod Cook CRAIT-0110 3/19/2002 Me1 Holmberg's request is to be provided the Request Action Plan Results IAW WO 02-001917-Closed No sampling plan. Inspection and Sampling plan Field Activity N/A step #13

13. PT examination of the uphill crack location (1 80 degrees) of nozzle #3 to determine if the crack remains at the machined surface of the weld metal and weld buttering (Le., remaining J-groove weld material), and if there is any wastage of the low alloy steel that may have occurred as a result of the leakage. (Step 17 should be done to record this information)

Determine if a crack exists and then evaluate taking a sample. See attached sketch.

results of any step of the inspection and 000 Mark Mclaughlin Framatome performed a Dye Penetrate test on the area as directed by this step. A PT report was generated and attached to the FENOC work order.

There were no recordable indications noted in the inspection. The performance of the PT inspection was documented on a tape, the tape was documented by a tape log and the tape and tape log turned over to the nozzle #

3 data clerk.

NRC - Me1 Holmberg Dale Miller CRAIT-0111 3/19/2002 Me1 Holmberg's request is to be provided the Request Action Plan Results IAW WO 02-001 917-Closed No sampling plan. Inspection and Sampling plan Field Activity N/A step #14

14. PT exam the underside of the unsupported section of cladding in the area of the bulge at nozzle #3.

results of any step of the inspection and 000 Mark Mclaughlin This inspection was performed and documented on the same report and tape as item # 13 NRC - Me1 Holmberg Dale Miller 6/11/2002 9:23:43 AM Page 35 of 55

Tracking Issue Number Date Issue Category/

ECD GrOup/Lead Response CR Initiated Status and Number CRAIT-0112 3/19/2002 Me1 Holmberg's request is to be provided the Request Action Plan Results IAW WO 02-001917-Closed No sampling plan. Inspection and Sampling plan Field Activity N/A step #15

15. PT exam of the entire wetted area of the remaining J-groove weld of nozzle #3.

results of any step of the inspection and 000 Mark Mclaughlin Thls inspection was performed and documented on the same tape as # 13 and # 14.

NRC - Me1 Holmberg Dale Miller CRAIT-0113 3/19/2002 Me1 Holmberg's request is to be provided the results of any step of the inspection and sampling plan. Inspection and Sampling plan step #16

16. Clean the area with a nylon brush and vacuum to prepare the area for impressions.

NRC - Me1 Holmberg Request Action Plan Results IAW WO 02-001917-Closed No Field Activity NIA 000 Mark Mclaughlin The cavity area of nozzle # 3 was cleaned with nylon bristle toothbrushes and the area was vacuumed after the cleaning. The brushing removed most of the adhered surface debris. The brushing and vacuuming were video taped, a tape log was generated and the tape and tape log turned over to the nozzle # 3 data clerk.

Dale Miller CRAIT-0114 3/19/2002 Me1 Holmberg's request is to be provided the results of any step of the inspection and sampling plan. Inspection and Sampling plan step #17

17. Take impressions of the remaining bore area near the crack including the J-groove weld at the 180" location on nozzle #3.

Looking for volume loss and possible undercutting of low alloy steel at cladding interface.

NRC - Me1 Holmberg Request Action Plan Results IAW WO 02-001917-Open No Field Activity NIA 000 Mark Mclaughlin An impression was made as directed by step 17. The impression was scanned with the laser scanner. The impression has been stored in a yellow plastic bag in the Framatome fire cabinet inside containment.

Dale Miller 6/11/2002 9:23:43 AM Page 36 of 55

Tracking Issue Number Date Issue Category/

ECD GrouPjkad Response CR Initiated Status and Number CRAIT-0115 3/19/2002 Me1 Holmberg's request is to be provided the results of any step of the inspection and sampling plan. Inspection and Sampling plan step #18

18. Take impressions of the topside bore area of nozzle #3 for approximately 1-2 inches along the top of the vessel head, looking for wastage. See attached sketch.

NRC - Me1 Holmberg Request Action Plan Results IAW WO 02-001917-Closed No Field Activity N/A 000 Mark Mclaughlin An impression was made as directed by step 18. The impression was scanned with the laser scanner. The impression has been stored in a yellow plastic bag in the Framatome fire cabinet inside containment.

Dale Miller CRAIT-0116 311 912002 Me1 Holmberg's request is to be provided the Request Action Plan Results IAW WO 02-001917-Closed No sampling plan. Inspection and Sampling plan Field Activity NIA step #19 Mark Mclaughlin It Was determined that this impression

19. Take impression of the entire under-hang area.

results of any step of the inspection and 000 could not be made.

NRC - Me1 Holmberg Dale Miller CRAIT-0117 311 912002 Me1 Holmberg's request is to be provided the results of any step of the inspection and sampling plan. Inspection and Sampling plan step #20

20. Laser profile of impression taken in Step 19 to tie together the profile obtained in Step

10.

NRC - Me1 Holmberg Request Action Plan Results IAW WO 02-001917-Open No Field Activity N/A 000 Mark Mclaughlin The Laser Scan Of the impression in steps 17 and 18 was performed. The data has bee forwarded to Lynchburg to format into a model. It was determined that the data could not be incorporated into the model generated from the laser scan in step # 10. Lynchburg has the action to forward the models generated from these scans to site.

Dale Milller 6/11/2002 9:23:43 AM

Tracking Issue Number Date Issue Category/

ECD GrOup/Lead Response CR Initiated Status and Number CRAIT-0118 3/19/2002 Me1 Holmberg's request is to be provided the results of any step of the inspection and sampling plan. Inspection and Sampling plan step #21

21. Perform photogrametry of flanges in the cavity area.

NRC - Me1 Holmberg CRAIT-0119 3/19/2002 Me1 Holmberg's request is to be provided the results of any step of the inspection and sampling plan. inspection and Sampling plan step #22

22. Complete repairs for nozzles #1, #5, and

1. 47.

NRC - Me1 Holmberg Request Action Plan Results IAW WO 02-001917-Closed No N/A 000 Field Activity Mark Mclaughlin The open nozzle flanges around location

1. 3 have been targeted and scanned with TOPO. This data file will be saved and compared to data from a post repair TOPO scan to verify adjacent nozzle position after the repair of the cavity at #

3 has been repaired. The data from this scan will also be used to design a tooling plate for the repair of nozzle # 3.

Dale Miller Request WO 02-005072-000 Open Field Activity Mark Mclaughlin CRAIT-0120 3/18/2002 Requested a copy of "Reactor Coolant System 3/18/2002 Request DB-OP-01200 Rev 3 with TAO1-0996 Closed No Root Cause N/A Leakage Management" procedure provided to NRC on 3/19/02

~

~

~~

Chuck Also see CRAIT-0088 Root Cause Team Ackerman Dale Miller CRAIT-0121 3/19/2002 Wants to know the material lost at nozzle 3.

3/19/2002 Question Provided calculation that estimated the Closed No

'00' cause calculation was an estimate.

N/A volume 123.7 in3 and weight 35#. This Steve Loehlein The draft root Cause Report stated about 125 cubic inches.

NRC - Me1 Holmberg Steve Hunt 6/11/2002 9:23:43 AM Page 38 of 55

Tracking Issue Number Date Issue Category/

ECD GrouPlbad Response CR Initiated Status and Number CRAIT-0122 3/19/2002 Interview with Pete Mainhardt, Davis Besse 3/19/2002 Interview Interview w/ Pete Mainhardt on 3/19/02 Closed No Reactor Vessel Head inspection engineer during RFO 11 and 12.

External inspection information during RFO 11 N/A

@ 1030 provided reactor vessel head Interface and 12.

Dave Gudger NRC - Me1 Holmberg Pete Mainhardt CRAIT-0123 3/19/2002 Mike Hacker and Steve Fyfitch need to talk 3/22/2002 Request Nozzle 46 was discussed with Jim Davis Closed No Me1 to discuss top down UT results for Nozzle

46.

Cause see CRAIT-0132 for summary of N/A Steve Loehlein dis~ussions NRC - Me1 Holmberg Dale Miller 6/11/2002 9:23:43 AM Page 39 of 55

Tracking Issue Number Date Issue Category/

ECD GrOrcp/Lead Response CR Initiated Status and Number CRAIT-0124 3/19/2002 The Root Cause Team (and the NRC AIT)requested the following from INPO:

SOERs 81-12 84-5 SERs 46-80 35-81 1 1-82 57-83 72-83 32-84 41 -85 13-87 31 -87 35-87 10-89 2-90 4-01 SENs 6

18 190 216 O&MR 348 3/20/2002 Request The Following were obtained by the Closed No Root Cause Team for review in their External investigation and copies were given to N/A Interface the NRC AIT:

SOERs 81 -1 2 (and Review of) 84-5 SERs SERs 46-80 35-81 1 1-82 57-83 72-83 32-84 41-85 (along with Closeout information -

Memo NEO-88-01246) 13-87 (along with Closeout information -

Memo NEO-88-00237) 31-87 (along with Closeout information -

Memo NEO-88-00288) 35-87 (along with Dissemination Memo -

NEO-88-01104 and Closeout Memo -

NEO-88-00056 10-89 2-90 (along with lnconel 600 Evaluation Memo - NED 91-20038) 4-01 (along with the Davis-Besse Operating Experience Document Checklist for SER 4-01)

SENs 6 (along with Closeout Memo for SER 18 (along with the TE Operating Experience Report Screening Checklist) 1 90 21 6 (along with the Davis-Besse Operating Experience Document Checklist for SEN 21 6) 13-87 (NEO-88-00237)

O&MR 6/11/2002 9:23:44 AM Page 40 of 55

Tracking Issue Number Date Issue Category/

ECD GrouPlkad Response CR Initiated Status and Number 348 (along with Closeout Memo NEO 01813)

Operating Experience OE2919 OE3464 OE3568 OE4354 OE5403 OE5996 OE6213 OE6449 OE6543 OE6583 OE6993 OE7355 OE7541 OE7689 OE7912 OE8151 OE8256 OE8965 OE9183 OE9487 OE9760 OE9940 OElOO50 OElO255 OEl0415 OElO430 OE10516 OElO740 OE10741 OElO992 OEll396 OEll505 OEll537 OEl1541 OEll655 OEll700 OEll887 OE12 1 33 OE12345 6/11/2002 9:23:44 AM Page 41 of 55

Tracking Issue Number Date Issue Category/

ECD GrOUP/had Response CR Initiated Status and Number OEl2370 OEl2463 OEl2466 OEl2516 OE12587 OEl2940 OE12980 OEl3056 OE13118 OE13251 OEl3377 OE12133 Root Cause Team Aaron Bless CRAIT-0125 3/19/2002 Interview with Dave Geisen, Manager Design 3/19/2002 Interview Jim Gavula and Ron Gardner met with Closed No External Engineering to discuss Mod 94-0025 N/A Interface Engineering Request Dave Geisen, Manager Design PRC and management reviews and Dave Gudger deferrals.

NRC -Jim Gavula Dave Geisen CRAIT-0126 3/20/2002 Requested data on head temperature profile (for Bill Cullen at NRR).

Request Hot leg temperature data was retrieved Closed No from DADS and provided to the NRC External N/A Interface Aaron Bless Also see CRAIT-0103 NRC - Doug Simpkins Dale Miller 6/11/2002 9:23:44 AM

Tracking Issue Number Date Issue Category/

ECD GrouP/had Response CR Initiated Status and Number CRAIT-0127 3/20/2002 Request information on a change in material Request Information was provided by James Closed No Engineering change from asbestos to graphite. This N/A for the CRD flange studs and nut rings Harris (Framatome) on flange material was provided in an upgrade timeline in Prasoon Goyal AITRD-0365.

Nut ring material has always been SA 320, Gr L43. The only change was in the rust inhibitor which was changed from to RustBan 392. The Data package for the CRDM bolts, nut ring, washers, etc was provided to Jim Davis on 3/20/2002 NRC -James Davis Rod Cook CRAIT-0128 3/20/2002 Me1 Holmberg would like to further dicuss the Reactor Vessel Head ID Clad Thickness Measurements with Mike Hacker Interview Mike Hacker (Framatome) and Rod Closed No Field Activity on 3/21 to discuss the Reactor Vessel N/A Cook (FENOC) met with Me1 Holmberg Mark Mchughlin Head ID Clad Thickness Measurement in Region of Wastage Between Nozzles 3 and 11. Discussion indicated that other measurements will be made around 1 1.

NRC - Me1 Holmberg Rod Cook CRAIT-0129 3/20/2002 What is the known start time of the corrosion Question The start of the corrosion mechanism is Closed No mechanism that caused wastage around nozzle #3 Cause deposition of iron on the filters for N/A reported as about May, 1999 based on Steve Loehlein-RE4597AA and RE4597BA.

NRC - Me1 Holmberg Dale Miller CRAIT-0130 3/20/2002 A video of 12RFO inspections has not yet been found. Need to continue search NRC - Me1 Holmberg Reauest All videos have been located and Closed No provided to the NRC.

Root Cause N/A Tom Pleune Dale Miller 6/11/2002 9:23:44 AM

Tracking Issue Category/

CR Initiated Number Date Issue ECD GrouPikad Response Status and Number CRAIT-0131 3/20/2002 Need to know the manufacturer and heat of Nozzle #46 Reauest Information on the manufacturer and Closed No heat of all nozzles was provided to Jim Davis on 3/20/02 Location Drawing Engineering Evalutation NIA Prasoon Goyal see CRAlT items 0048,0049 and 0096 Dale Miller NRC -James Davis CRAIT-0132 3/19/2002 Follow-up on Interview with Prasoon Goyal 3/20/2002 Voluntary Preliminary information on RPV head, Closed No N/A and Steve Fy-fitch (CRAIT-00106) and NRC clad, and nozzle material composition 3/19/02 Debrief Mtg comments.

provided which will be followed-up by providing CMTRs and a discussion on CRAIT-00106 Dave Gudger nozzle 46 penetration was conducted.

Interface NRC -James Davis Prasoon Goyal CRAIT-0133 3/19/2002 Interview with Joe Rodgers, Manager Plant 3/20/2002 Interview Jim Gavula and Ron Gardner met with Closed No Engineering and Dave Eshelman, Director Nuclear Services.

3/21 to discuss Mod 94-0025 PRC and N/A Joe Rodgers and Dave Eshelman on Interface management reviews and deferrals.

Dave Gudger Joe Rodgers NRC -Jim Gavula CRAIT-0134 3/20/2002 Request from NRC-Doug Simpkins for electronic copies of 7 pictures/sketches/diagrams.

See also CRAIT-0094.

Request 5 of the 7 have been copied to a disk to Closed No External N/A be provided to the NRC.

Remaining electronic copies of pictures provlded to Doug Simpkins.

Interface Information Provided:

Electronic copies of Sketch 1, 2, &

11.gif, Characterization of wasatage.jpg, Nozzle #2 side view.jpg, and Nozzle #2 Defect Locationjpg provided on 3/20/02 NRC - Doug Simpkins Aaron Bless 6/11/2002 9:23:44 AM

Tracking Issue Number Date Issue Category/

ECD GrouP/bad Response CR Initiated Status and Number CRAIT-0135 3/20/2002 Interview with Prasoon Goyal (Second Time) 3/21/2002 Interview NRC - Jim Gavula External Interface Dave Gudger NRC discussion with Prasoon Goyal Closed No covered modification 94-0025 and PCAQR 96-0551.

N/A Prasoon Goyal CRAIT-0136 3/8/2002 Quantify flange leak flow rates identified during Request Investigation Team Leader Fred VonAhn 12RFO (2000). (CRDN-0017)

NRC - Conference Call Specific flange leakage can't be Closed No quantified. Unidentified leak rates from Jan. 1995 through the summer of 1998 N/A was less than 0.1 gpm. The UL was about 0.1 gpm from the summer of 2000 (after 12RFO) until about September 2000. The UL was about 0.2 gpm after September 2000. This information derived from the initial draft of the Root Cause report which provides additional further information on unidentified leakage Dale Miller CRAIT-0137 3/8/2002 Provide NRC DPickett with Generic Letter 88-05 program information regarding aspect of preventing contact of boron with ferretic metals. (CRDN-0016)

Duplicate to CRAIT-0063.

NRC - Conference Call Request Open Investigation Team Leader Fred VonAhn CRAIT-0138 3/15/2002 NRC would like a description/sketch of Nozzle

2.

NRC - Conference Call Request A desciption and sketch of Nozzle 2 was Closed No provided. Reference RAS-02-00117.

Field Activity N/A Mark McLaughlin Dale Miller 6/11/2002 9:23:44 AM Page 45 of 55

Tracking Issue Number Date Issue Category/

ECD GrouPlbad Response CR Initiated Status and Number CRAIT-0139 3/15/2002 Provide NRC with copy of long-term plan for Nozzles 2 and 3, when available.

Request Engineering Evalutation

~

Open Jim Powers NRC - Conference Call CRAIT-0140 311 512002 Go after UTs for Nozzle 3 bore area cladding 3/18/2002 Question Thickness of Nozzle 3 cavity cladding Closed No thickness.

was established through the Field Activity performance of a grid UT.

N/A See also CRAIT-0080 Mark McLaughlin Reactor Vessel Head ID Clad Thickness Measurements in Region of Wastage Between Nozzles 3 and 11. (performed 0311 7/02)

NRC - Conference Call DRWuokko CRAIT-0141 311 512002

~ _ _ _. _ _ _ _ _ ~

CRAIT-0142 311 512002 Review proprietary information in NRCINRR possession to determine if any can be de-classified. If it cannot be de-classified then provide 2.790 affidavit.

NRC - A Mendiola Request External Interface D H Loc kwood Open Check with Field Activities Team if there are Question Thickness of Nozzle 3 cavity cladding Closed No other tools to get cladding thickness measurements. Six readings of clad thickness Activity performance of a grid UT.

n/a would give a statistical basis.

was established through the Mark McLaughlin Reactor Vessel Head ID Clad Thickness Measurements in Region of Wastage Between Nozzles 3 and 11. (performed 0311 7/02)

NRC - Conference Call DRWuokko 6/11/2002 9:23:44 AM Page 46 of 55

Tracking Issue Number Date Issue Category/

ECD GrouP/bad Response CR Initiated Status and Number CRAIT-0143 3/13/2002 Provide chemical equation for boric acid Request Whitepaper on corrosion equations was Closed No interacting with carbon steel. Provide products resulting from the reaction (iron borate, iron Cause e-mail of 03/16/02 Q 1503 hrs.

N/A hydroxide, etc.) Whar are the colors of these compounds.

Duplicate to CRAlT-0047 provided to the NRC/NRR by MKLeisure Sloehlien NRC - Bill Bateman DRW uokko CRAIT-0144 3/14/2002 Provide Nozzle 2 inspection and sampling plan Request Integrated Plan (Field/Engineering/Root Open No to NRC/NRR for review and concurrence before implementing. (CRDN-0037)

Act'vity Remove Nozzle #2 was e-mailed to the N/A Also see CRAIT-0074 hours. Conference call is scheduled to discuss on 03/22/02 following the 1400 hour0.0162 days <br />0.389 hours <br />0.00231 weeks <br />5.327e-4 months <br /> daily call.

Cause) To Inspect, Evaluate, and MMcLaughlin NRC by DRWuokko on 03/21/02 @lo59 DRWuokko NRC - Bill Bateman CRAIT-0145 3/14/2002 Obtain NRR review of Steps 13 through 16 of Request Obtained NRR/B Bateman Closed No Quarantine Area Inspection and Sampling Plan. (CRDN-0036)

Activity 03/15/02. See referenced telecon N/A Duplicate to CRAIT-0073 review/concurrence on Steps 13-22 on MMcLaughlin documentation.

NRC - Bill Bateman DRWuokko CRAIT-0146 3/14/2002 Provide details of Framatome repairs Request Forwarded to NRC the information Closed No performed on French reactor vessels (including dates).

Engineering to NRC/NRR on 03/17/02 Q 0945 hours0.0109 days <br />0.263 hours <br />0.00156 weeks <br />3.595725e-4 months <br />.

N/A Evalutation Duplicate to CRAIT-0076 C Bowles provided by CBowles-FANP. Sent e-mail NRC - Conference Call DRW uokko 6/11/2002 9:23:44 AM Page 47 of 55

Tracking Issue Number Date Issue Category/

ECD GrouP/had Response CR Initiated Status and Number CRAIT-0147 3/14/2002 Discuss information flow protocol with NRR Clarification The following protocol is to be followed Closed No DBNPS Project Manager and CRDM Project Manager.

If the issue is DBNPS-specific, then the N/A in discussions with the NRC:

initial contact is to be through DBNPS Project Manager SPSands or Backup Project Manager DVPickett.

If the issue is generic RVH degradation, then contact is to be made through Steve Bloom, Project Manager.

If the issue is generic CRDM Nozzle cracking, then contact is to be made through Beth Wetzel, Project Manager.

Interface DRWuokko NRC - Conference Call DRW uokko CRAIT-0148 3/15/2002 Provide NRC with 308 Stress Strain Curve Request 308 Stress Strain Curve provided to Closed No discussed during the 03/15/02 stress analysis conference call, as requested by NRC Ed Engineering 03/15/02 Q 1900 hours0.022 days <br />0.528 hours <br />0.00314 weeks <br />7.2295e-4 months <br />. CBowles -

N/A Hackett. (CRDN-0045)

Duplicate to CRAIT-0079 NRC/NRR by DRWuokko e-mail on FANP provided curve to DRWuokko.

Jim Powers D R W uokko NRC - Conference Call

~

_ _. _ _ _ _ _ _ ~ -

~

_ _ _ ~ _ _ _ _ _ _ - -

CRAIT-0149 3/20/2002 NRC 3/20 Debrief: Operations staff and 3/22/2002 Clarification Discussion with Doug Sirnpkins Closed No management have a disconnect with respect to whether unidentified leakage was External to Operations management that leakage N/A associated with RPV head leakage.

Interface Aaron Bless indicated that operators had expressed was coming from the reactor head. This topic was discussed with Tony Stallard and Bill Bentley and there was no recollection of head leakage being specifically discussed. When leakage concerns were investigated in the past, Tony and Bill recalled that head leakage was a possibility through process of elimination in that accessible areas of containment had been walked down.

NRC - Doug Simpkins Dale Miller 6/11/2002 9:23:44 AM

Tracking Issue Number Date Issue Category/

ECD GrOuP/ad Response CR Initiated Status and Number CRAIT-0150 3/20/2002 NRC 3/20 Debrief: Oxides on filters was Clarification D. Giesen discussed this with the AIT on Closed No disoositioned bv SW Research in a November 3/22/2002.

5, i999, memoiandum as potentially caused bv steam leak.

NRC - Doug Simpkins External Interface N/A Aaron Bless Rod Cook CRAIT-0151 3/20/2002 Not able to confirm the number of nozzles inspected in 1996 as described in IEB 2001-01 response. Head curvature and camera does not provide expected detail.

Clarification This was discussed with AIT on 3/22/02 Closed No External was not intended to be consistent with N/A Interface Bulletin 2002-01 expectations. Nozzle Rod Cook views did provide conclusion that boric acid leakage of the type seen at Oconee and ANO-1 was not present. Nozzles shown on video, as stated in Serial 2744, are nozzles that have some obscurrence or boric acid in contact. If the nozzles were not videotaped, they did not indicate any type of boric acid obscurrence.

by Andrew Siemaszko. Expected detail NRC - Me1 Holmberg Rod Cook CRAIT-0152 3/20/2002 Plant staff comDliance with Boric Acid Control 3/22/2002 Clarification This item was discussed with the AIT in Closed Procedure based on engineering analysis performed was questioned.

several interviews.

External interface NRC - Me1 Holmberg Rod Cook Dave Giesen CRAIT-0153 3/21/2002 Request for CRDM hold down bolts (grade 3/22/2002 Request CRDM hold down bolts preload UT Closed No External 35,700 Ibs. ASME code is SA 453.

N/A Interface 660) preload and code requirements.

acceptance range criteria is 27,500 Ibs -

NRC -James Davis Dave Gudger Dave Gudger 6llll2002 9:23:44 AM

Tracking Issue Number Date Issue Category/

ECD GrOuP/kd Response CR Initiated Status and Number CRAIT-0154 3/22/2002 Interview with Boric Acid Corrosion Control 3/22/2002 Interview NRC Interview with BACC program Closed Program coordinator (Walt Molpus) coordinator reviewed the procdure requirements and the implementation of the program at Davis Besse External Interface Dave Gudger NRC -Jim Gavula Walt Molpus CRAIT-0155 3/22/2002 In reference to picture dated 3/12/02 at 04:36, is the debris shown rust and where did it come from?

NRC - Me1 Holmberg Clarification The debris observed after the initial Closed No Root Cause John ONeill. John's observation is that N/A removal of insulation was discussed with Steve Loehlein the debris is most likely rust colored boric acid pieces and discolored /

degraded mirror insulation pieces.

Refer to CRAIT-0011 which discusses material that was vacuumed up on 311 3/02.

Dale Miller CRAIT-0156 3/18/2002 Requested information on Containment recirc fan history since 1996.

Root Cause Team Request History for fans C56-1 and C56-2 was Closed provided to Ted lang and Doug Cause Simpkins on 3/18/02 No N/A Ted Lang Dale Miller CRAIT-0157 3/25/2002 After discovery of video tapes in the 314" wide format, these tapes were copied into VHS format on 3/21/02 at RGB Productions, Inc.

Root Cause Team Voluntary Video tapes copied were provided to the Closed AIT on 3/22. These were 7 tapes of External CRDM flanges and 1 tape of the vessel Interface head conducted through the weep Dale Miller holes. Tapes were numbered DB-9301 through DE-9307 and DB-9315.

Dale Miller No N/A 6/11/2002 9:23:45 AM Page 50 of 55

Tracking Issue Number Date Issue Category/

ECD GrOlcp/Lead Response CR Initiated Status and Number CRAIT-0158 3/25/2002 NRR Reactor System Branch reviewed the Voluntary Engineering Evalutation whitepaper dated 3/18/02, "Proposed Control Rod Drive Relocation Plan Impact on Davis-Besse Cycle 14 Design" and responded that control rod relocations are not typically addressed in reload analysis space. It is expected that a complete analysis will be submitted for staff review and approval.

See CRAIT-0072 NRC-Doug Pickett Open CRAIT-0159 3/25/2002 Requested copy of picture / video of PT for Nozzle 46 Request Video, "P. T. of Nozzle # 46 J-groove Closed Weld Flapping of Nozzle #46 J-groove Weld" (Tape DB#A8 dated 3/24/02) copy of the PT report (color) was provided on 3/26/02 to Me1 Holmberg Activity Mark McLaughlin NRC - Me1 Holmberg Dale Miller No N/A CRAIT-0160 3/26/2002 Jim Gavula wanted to know what was meant 3/26/2002 Clarification The specific question was what was the Closed No by the statement in the SIA Calc (W-ENTP-11 Q-306, "Finite Element Gap Analysis of CRDM Penetrations (Davis-Besse)"),

Appendix D, page D2 that said "It was shown in Table 3, Section 6.1, that the Tube 3 had no gaps at the very bottom of the interference zone. 'I "bottom of the interference zone. Where was that? Discussions with Dick Mattson at SIA anwered the question for Engineer!ng Evalutat'on Prosoon Goyal Jim.

NRC -Jim Gavula Rod Cook CRAIT-0161 3/25/2002 The Preliminary draft root cause report made Clarification Rod Cook talked with Andrew Open No N/A available to the NRC stated on page 18 that boron deposits had been forced up through the insulation during RF-12 and RF-13. This seemed inconsistant with interviews conducted.

Siemaszko concerning this issue and he did not feel the indications showed flow Root Cause Steve Loehlein upward.

NRC -Jim Gavula Rod Cook 6/11/2002 9:23:45 AM Page 51 of 55

Tracking Issue Number Date Issue Category/

ECD GrouPlaad Response CR Initiated Status and Number CRAIT-0162 3/25/2002 The estimate of leakrate may have been Clarification Root Cause underestimated based on boron found on the reactor vessel head when boron was disrtibuted around containment.

Steve Loehlein NRC - Doug Simpkins Open CRAIT-0163 3/25/2002 PCAQR 94-0295 addressed a TERMS item Question The TERMS item was based on an Closed No that was closed rather than made an ongoing internal Davis-Besse memo (source item. What was the basis for the conclusion document CCN NED92-20101 for N/A that this was not a violatrion of an NRC TERMS A16892)and was not a commitment?

Dale Miller commitment made to the NRC via a Serial letter. The TERMS item was See CRAIT-0109 closed because the boric acid corrosion control program was the actual committed program per GL88-05.

Interface NRC -Jim Gavula Dale Miller CRAIT-0164 3/25/2002 Did an inspection of the Reactor Head occur in the 9RFO?

Question Root Cause Open NRC -Jim Gavula Steve Loehlein CRAIT-0165 3/25/2002 Jim Davis observed that acid appeared to be 3/25/2002 Clarification Rod Cook talked with Andrew Closed No N/A present on the insulation to a depth of about 4 - 5 inches at the D-10 nozzle location. The root cause said that boric acid had been removed and Andrew said in interviews that the deposits had not been removed.

Siemaszko concerning this issue and determined boric acid was above the insulation and had not been removed.

Interface Rod Cook NRC - James Davis Rod Cook CRAIT-0166 3/26/2002 Provide documentation / confirmation of the 9 Clarification This information was found in MWO 1-Closed No CRDM flanges that had gaskets replaced in 1996 External map of the flanges on the head and N/A 95-0613-03. The work order displayed a highlighted those gaskets that were replaced per the work order.

Interface Aaron Bless NRC -James Davis Aaron Bless 4/11/2002 9:23:45 AM Page 52 of 55

Tracking Issue Number Date Issue Category/

ECD GrouP/aad Response CR Initiated Status and Number CRAIT-0167 3/26/2002 Explain the criteria that was applied to determine when a CRDM flange gasket was to be replaced based on the flange leakage grading criteria (1 thru 5) established prior to 1996.

NRC -James Davis Clarification This was discussed between Ed Closed No External Holmberg on 3/27. Replacements of N/A Interface Dale Miller

~

Chimahusky, Jim Davis and Me1 flange gaskets were determined based on outage plans, the number needing replacement and the window for replacing them. Using the criteria, the worst flange left in place would have been graded a 2. Ed rated the D-10 steam cut flange at between 1 and 2.

Boric acid deposits were generally cleaned up the best that could be accomplished from the top of the Service Structure.

Later discussion with Chuck Daft, mike Sheperd and Pete senuik occurred to discuss the procedure and code requirements. The procedure that applies is DB-PF-03010. For 12RF0, the code applicable wassection XI, 1986 version. The ASME code applicable now is 1995 with 1996 addenda.

Dale Miller CRAIT-0168 3/26/2002 What is the size of a weep hole opening in the Service Structure ?

NRC - Me1 Holmberg CRAIT-0169 4/17/2002 Requested a copy of Work Order 00-001 846 NRC - Scott Thomas Question per Frarnatome, the weep holes are Closed No approximately rectangular, 4 5/8 wide External and 7 1/4" tall.

N/A Interface Dale Miller Dale Miller 4/17/2002 Request Gave NRC Scott Thomas a copy of Closed No Work Order 00-001846-000 and00-External 001 846-001.

Interface N/A Aaron Bless Aaron Bless 6/11/2002 9:23:45 AM Page 53 of 55

Tracking Issue Number Date Issue Category/

ECD Grolcp/Lead Response CR Initiated Status and Number CRAIT-0170 5/16/2002 NRC Inspector Jim Gavula requested the following documents after the Entrance meeting conducted on 5/16/02:

NG-EN-00324 In Effect NG-EN-00324 12RFO (2000)

NG-EN-00324 11 RFO (1 998)

NG-EN-00324 10RFO (1996)

Work Oders for 12RF0, 11 RFO, and 10RFO (NG-EN-00324) Attachment 1's completed for 12RFO,11RFO, and 10RFO WO for head inspections for 12RF0, 11 RFO, and 10RFO Request D. L. Miller System Engineer Restart Readiness Report QA Trend Reports 1999 through 12RFO Audit Report that would have captured filter clogging NRC -Jim Gavula CRAIT-0171 5/20/2002 NRC Jim Gavula requested drawings showing 5/20/2002 Request Drawings M-503-127-3, 7749-M-503-212-Open the closure head assembly and nozzle dimensions. Drawings which were previously given to the Augmented Inspection Team.

1, 7749-M-503-213-2, and 03-1221681 -

03 (selected pages) were provide to Jim A. w. ~l~~~

Gavula (5/20/02)

NRC - Jim Gavula A. W. Bless Open No N/A 6/11/2002 9:23:45 AM Page 54 of 55

Tracking Issue Number Date Issue Category/

ECD GrouP/bad Response CR Initiated Status and Number CRAIT-0172 5/20/2002 The following video tapes were requested by NRC Me1 Holrnberg during the May 20, 1400 hour0.0162 days <br />0.389 hours <br />0.00231 weeks <br />5.327e-4 months <br /> conference call.

"Plug Inspection Cut Out in Head 05/16/02" (copy #A29)

"Nozzle 46-PT 05/01/02" (copy #A20)

"Nozzle 46-PT 05/02/02" (copy #A21)

NRC - Me1 Holrnberg Request The video tapes were provided to NRC Closed Me1 Holrnbeg from D. R. Wuokko on 5/21/02. The cavity video was shot in accordance with the Davis-Besse "Plan for Extraction and Presetvation of Nozzle #3 Cavity Area for Root Cause Analysis," step 12.

D. R. Wuokko No N/A CRAIT-0173 5/20/2002 The following video tape was requested by NRC Doug Pickett during the May 20, 1400 hour0.0162 days <br />0.389 hours <br />0.00231 weeks <br />5.327e-4 months <br /> conference call.

"Plug Inspection Cut Out in Head 05/16/02" (copy #A29)

~~

~

Request The video tapes were provided to NRC Closed Me1 Holrnbeg from D. R. Wuokko on 5/21/02. The cavity video was shot in accordance with the Davis-Besse "Plan for Extraction and Preservation of Nozzle #3 Cavity Area for Root Cause Analysis," step 12.

D. R. Wuokko No N/A NRC - Doug Pickett 6/11/2002 9:23:45 AM Page 55 of 55