|
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Category:MEETING MINUTES & NOTES--CORRESPONDENCE
MONTHYEARML20211N5371999-09-0808 September 1999 Summary of 990901 Meeting with Util in Rockville MD Re Plans for Advanced Core Monitoring Sys.List of Attendees & Licensee Agenda Encl ML20196L1131999-07-0101 July 1999 Summary of 990330 Meeting with Util in Rockville,Md to Discuss Status of NRC Review of Bge License Renewal Application for Calvert Cliffs Nuclear Power Plant,Unit 1 & 2.List of Attendees & Meeting Slides Encl ML20196K4621999-07-0101 July 1999 Summary of 990114 Meeting with Util in Rockville,Md Re Status of NRC Review of Bg&E License Renewal Application for Calvert Cliffs Npp.List of Meeting Attendees & Meeting Slides Encl ML20196G4301999-06-24024 June 1999 Summary of 981216 Meeting with Util in Rockville,Md to Discuss Status of NRC Review of Bge License Renewal Application for Plant,Units 1 & 2 ML20196F8281999-06-24024 June 1999 Summary of 981203 Meeting with Representatives of & Contractors to Util in Rockville,Md Re Bge Performance on Aging Mgt Evaluation Re Susceptibility of Cast Austenitic Stainless Steel Components to Thermal Embrittlement.W/Encl ML20195J0781999-06-14014 June 1999 Summary of 990512 Meeting with Util in Rockville,Md Re Licensee Renewal Activities for Calvert Cliffs Nuclear Power Plant.List of Meeting Attendees & Slides Used by NRC & Util Encl ML20206S2841999-05-19019 May 1999 Summary of 990427 Telcon with Util Re Recent Secondary Side SG Insp Activities at Plant,Unit 2.Replacement SGs Are Planned to Be Installed in Spring 2002 for Units 1 & 2 ML20207A3041999-05-18018 May 1999 Summary of 990505 & 10 Telcons with Util Re License Renewal Application on Metal Fatique ML20206U5621999-05-17017 May 1999 Summary of 990428 Meeting with Bg&E in Rockville,Md to Discuss Plant Steam Generator Replacement Projects.List of Attendees & Meeting Handouts Encl ML20204H5911999-03-19019 March 1999 Summary of 990210 Meeting with Bge in Lusby,Md Re License Renewal Activities for Ccnpp,Units 1 & 2 & Use of age- Related Degradation Insps as Outlined in 990202,meeting Announcement.List of Attendees & Slides Encl ML20204H4541999-03-19019 March 1999 Summary of 990216 & 18 Meetings with Util in Lusby,Md Re License Renewal Activities for Plant,Units 1 & 2.List of Meeting Attendees & Summary of RAIs That Were Discussed by Staff with Bge Staff & Info Obtained from Bge Staff Encl ML20202J7131999-01-28028 January 1999 Summary of 990107 Meeting with Util Re Info Provided by Util for Severe Accident Mitigation Alternative (SAMA) Review & Site Audit ML20198K6461998-12-28028 December 1998 Summary of 981202 Meeting with Util in Rockville,Md to Discuss Proposed TS Amend Allowing Installation of Sleeves in Defective SG Tubing in Calvert Cliffs,Units 1 & 2.List of Attendees & Presentations Slides Provided by Licensee Encl ML20198A4201998-12-11011 December 1998 Summary of 981022 Meeting with Util in Rockville,Md to Discuss How Bge Addressed License Renewal Requirements for time-limited Aging Analyses & Generic Safety Issues as Applicable to Environ Qualification ML20198B8351998-12-11011 December 1998 Summary of 980820 Meeting with Util in Rockville,Md to Discuss Progress of NRC Staff Review of Util License Renewal Application & Provide Overview of Proposed Method for Evaluating Performance.List of Attendees & Slides Encl ML20198A2741998-12-10010 December 1998 Summary of 981123 Meeting with Bge Re Review of Plant Records Associated with Chemistry,Allow 600 & Boric Acid Corrosion Insp Programs Relied Upon in Bge License Renewal Application for Plant,Units 1 & 2 ML20195J0391998-11-16016 November 1998 Summary of 980928 Meeting with Util in Rockville,Md Re License Renewal Activities for Plant,Units 1 & 2 & to Provide Rept Card for Both NRC & Util ML20195F3961998-11-13013 November 1998 Summary of 981029 Meeting W/Nei,Bge & Duke Energy Re Status of License Renewal Activities.List of Attendees & Slides Presented by Bge for Status of Calvert Cliffs License Renewal Application Review Encl ML20195D4401998-11-13013 November 1998 Summary of 980813 Meeting W/Bg&E in Rockville,Md to Discuss Bg&E Fire Protection Evaluation,Section 5.10,contained within License Renewal Application.List of Attendees & Presentation Slides Encl ML20195H9311998-11-13013 November 1998 Summary of 980626 Meeting with Bg&E in Rockville,Md Re Bg&E Structures & System Walkdown Program for License Renewal. List of Meeting Attendees & Bg&E Presentation Slides Encl ML20195F4011998-11-13013 November 1998 Summary of 980915 Meeting with NEI License Renewal Task Force in Rockville,Md Re Prioritization of Generic License Renewal Issues for Resolution.List of Meeting Attendees, Resolution Criteria & List of Issues Encl ML20195F9571998-11-13013 November 1998 Summary of 980625 Meeting with Bg&E in Rockville,Md Re Bg&E age-related Degradation & Insp Program for License Renewal. List of Meeting Attendees & Slides Used by Bg&E Encl ML20196A1821998-11-13013 November 1998 Summary of 980624 Meeting with Util in Rockville,Md Re Integrated Plant Assessment Process for License Renewal.List of Attendees & Slides Encl ML20151Z5801998-09-0707 September 1998 Summary of 980506 Meeting with Bg&E in Rockville,Md Re Util Proposed Responses to 980213 & 19 NRC Staff Requests for Addl Info on Bg&E License Renewal Feedwater Sys (5.9) & Dfos (5.7).List of Attendees & Util Proposed Responses,Encl ML20237C4651998-08-19019 August 1998 Summary of 980729 Meeting W/Bg&E & Contractor SG Team in Rockville,Md Re Plant,Units 1 & 2 SG Replacement Project. List of Attendees & Viewgraphs Distributed at Meeting Encl ML20236X6501998-07-28028 July 1998 Summary of 980709 Meeting W/Baltimore Gas & Electric Co in Solomons,Md Re Plant Environ Scoping Meetings to Support Review of License Renewal Application.List of Attendees & Presentation Matls Encl ML20249A9271998-06-16016 June 1998 Summary of 980604 Meeting W/Licensee in Rockville,Md to Discuss Replacement of Svc Water Heat Exchanges During Spring 1999 Refueling Outage on Unit 2.List of Attendees & Licensee Agenda Encl ML20247M4981998-05-15015 May 1998 Summary of 980319 Meeting W/Util Re Improved Tss.List of Attendees Encl ML20217K5921998-04-20020 April 1998 Summary of 980407 Meeting W/Util Re Control Room Habitability Issue W/Main Steam Line Break.List of Attendees,Util Presentation Matls & NRC Concept of CR Ventilation Sys Encl ML20216C8991998-04-10010 April 1998 Summary of 980326 Meeting W/Util in Rockville,Md to Discuss Licensee Plans for Inspecting SG Tubing in Upcoming Refueling Outage ML20203E0011998-02-12012 February 1998 Summary of 980126 Meeting W/Bg&E Re Plant,Units 1 & 2 Improved Ts.List of Attendees Encl ML20199B4121998-01-20020 January 1998 Summary of 980114 Meeting W/Bg&E in Rockville,Md Re Calvert Cliffs Nuclear Power Plant,Units 1 & 2,improved Tss.List of Attendees Encl ML20198H4011998-01-0505 January 1998 Summary of 971208 Meeting W/Bg&E in Rockville,Md Re Plant Pra.List of Attendees & Viewgraphs Encl ML20197K2121997-12-15015 December 1997 Summary of 971112,13 & 18 Meeting W/Baltimore Gas & Electric in Rockville,Md Re Clarification of Calvert Cliffs Improved Tss.List of Meeting Attendees Encl ML20211L9371997-10-0202 October 1997 Summary of 970827 Meeting W/Bg&E in Rockville,Md Re Reactor Pressure Vessel 10-year Inservice Inspection Project.List of Attendees & Copy of Viewgraphs Distributed at Meeting Encl ML20216J9411997-09-10010 September 1997 Summary of 970903 Meeting W/Baltimore Gas & Electric in Rockville,Md Re Calvert Cliffs Nuclear Power Plant,Units 1 & 2,service Water Modifications.List of Attendees & Copy of Viewgraphs Distributed at Meeting Encl ML20217B1771997-09-10010 September 1997 Summary of 970904 Meeting W/Bg&E in Rockville,Md Re Clarification of Calvert Cliffs Ts,Sections 1.0,2.0,3.1,3.1 & 5.0.List of Meeting Attendees Encl ML20217N9991997-08-21021 August 1997 Summary of 970731 Meeting W/Bge in Rockville,Md Re Severe Accident Mitigation Alternatives Methodology.List of Attendees & Presentation Matl Encl ML20217P0401997-08-21021 August 1997 Summary of 961204 Meeting W/Util in Rockville,Md Re Calvert Cliffs Improved Tss.List of Attendees Encl ML20198F1221997-08-0505 August 1997 Summary of 970730 Meeting W/Bge in Rockville,Md Re Plant Improved Ts.List of Attendees Encl ML20151J5531997-07-31031 July 1997 Summary of 970715 Meeting W/Bge in Rockville,Md Re Matters Related to Operability of SW Sys & SRW ML20148K7771997-06-16016 June 1997 Summary of 970605 Senior Mgt Meeting W/Util in Rockville,Md Re License Renewal Environ Rept (Er) Template Process.List of Participants & Handouts Encl ML20148H2211997-05-27027 May 1997 Summary of 970519 Meeting W/Bge in Rockville,Md to Discuss License Renewal Er Template Process.List of Attendees Encl ML20137W5311997-04-16016 April 1997 Summary of 970408 Meeting W/Util in Rockville,Md to Discuss Responses to Staff 960830 Rai.List of Attendees Encl ML20147G8651997-03-26026 March 1997 Summary of 970226 Meeting W/Bge in Rockville MD to Discuss Util Response to Staff 960830 Rai.List of Attendees & Matls Distributed at Meeting Encl ML20137E3501997-03-24024 March 1997 Summary of 970307 Meeting W/Bge in Rockville MD to Provide Comments on License Renewal Er Template Proposed by Util. List of Meeting Participants Encl 1999-09-08
[Table view] Category:MEETING SUMMARIES-INTERNAL (NON-TRANSCRIPT)
MONTHYEARML20211N5371999-09-0808 September 1999 Summary of 990901 Meeting with Util in Rockville MD Re Plans for Advanced Core Monitoring Sys.List of Attendees & Licensee Agenda Encl ML20196L1131999-07-0101 July 1999 Summary of 990330 Meeting with Util in Rockville,Md to Discuss Status of NRC Review of Bge License Renewal Application for Calvert Cliffs Nuclear Power Plant,Unit 1 & 2.List of Attendees & Meeting Slides Encl ML20196K4621999-07-0101 July 1999 Summary of 990114 Meeting with Util in Rockville,Md Re Status of NRC Review of Bg&E License Renewal Application for Calvert Cliffs Npp.List of Meeting Attendees & Meeting Slides Encl ML20196G4301999-06-24024 June 1999 Summary of 981216 Meeting with Util in Rockville,Md to Discuss Status of NRC Review of Bge License Renewal Application for Plant,Units 1 & 2 ML20196F8281999-06-24024 June 1999 Summary of 981203 Meeting with Representatives of & Contractors to Util in Rockville,Md Re Bge Performance on Aging Mgt Evaluation Re Susceptibility of Cast Austenitic Stainless Steel Components to Thermal Embrittlement.W/Encl ML20195J0781999-06-14014 June 1999 Summary of 990512 Meeting with Util in Rockville,Md Re Licensee Renewal Activities for Calvert Cliffs Nuclear Power Plant.List of Meeting Attendees & Slides Used by NRC & Util Encl ML20206S2841999-05-19019 May 1999 Summary of 990427 Telcon with Util Re Recent Secondary Side SG Insp Activities at Plant,Unit 2.Replacement SGs Are Planned to Be Installed in Spring 2002 for Units 1 & 2 ML20207A3041999-05-18018 May 1999 Summary of 990505 & 10 Telcons with Util Re License Renewal Application on Metal Fatique ML20206U5621999-05-17017 May 1999 Summary of 990428 Meeting with Bg&E in Rockville,Md to Discuss Plant Steam Generator Replacement Projects.List of Attendees & Meeting Handouts Encl ML20204H5911999-03-19019 March 1999 Summary of 990210 Meeting with Bge in Lusby,Md Re License Renewal Activities for Ccnpp,Units 1 & 2 & Use of age- Related Degradation Insps as Outlined in 990202,meeting Announcement.List of Attendees & Slides Encl ML20204H4541999-03-19019 March 1999 Summary of 990216 & 18 Meetings with Util in Lusby,Md Re License Renewal Activities for Plant,Units 1 & 2.List of Meeting Attendees & Summary of RAIs That Were Discussed by Staff with Bge Staff & Info Obtained from Bge Staff Encl ML20202J7131999-01-28028 January 1999 Summary of 990107 Meeting with Util Re Info Provided by Util for Severe Accident Mitigation Alternative (SAMA) Review & Site Audit ML20198K6461998-12-28028 December 1998 Summary of 981202 Meeting with Util in Rockville,Md to Discuss Proposed TS Amend Allowing Installation of Sleeves in Defective SG Tubing in Calvert Cliffs,Units 1 & 2.List of Attendees & Presentations Slides Provided by Licensee Encl ML20198A4201998-12-11011 December 1998 Summary of 981022 Meeting with Util in Rockville,Md to Discuss How Bge Addressed License Renewal Requirements for time-limited Aging Analyses & Generic Safety Issues as Applicable to Environ Qualification ML20198B8351998-12-11011 December 1998 Summary of 980820 Meeting with Util in Rockville,Md to Discuss Progress of NRC Staff Review of Util License Renewal Application & Provide Overview of Proposed Method for Evaluating Performance.List of Attendees & Slides Encl ML20198A2741998-12-10010 December 1998 Summary of 981123 Meeting with Bge Re Review of Plant Records Associated with Chemistry,Allow 600 & Boric Acid Corrosion Insp Programs Relied Upon in Bge License Renewal Application for Plant,Units 1 & 2 ML20195J0391998-11-16016 November 1998 Summary of 980928 Meeting with Util in Rockville,Md Re License Renewal Activities for Plant,Units 1 & 2 & to Provide Rept Card for Both NRC & Util ML20195D4401998-11-13013 November 1998 Summary of 980813 Meeting W/Bg&E in Rockville,Md to Discuss Bg&E Fire Protection Evaluation,Section 5.10,contained within License Renewal Application.List of Attendees & Presentation Slides Encl ML20195F3961998-11-13013 November 1998 Summary of 981029 Meeting W/Nei,Bge & Duke Energy Re Status of License Renewal Activities.List of Attendees & Slides Presented by Bge for Status of Calvert Cliffs License Renewal Application Review Encl ML20195F4011998-11-13013 November 1998 Summary of 980915 Meeting with NEI License Renewal Task Force in Rockville,Md Re Prioritization of Generic License Renewal Issues for Resolution.List of Meeting Attendees, Resolution Criteria & List of Issues Encl ML20195F9571998-11-13013 November 1998 Summary of 980625 Meeting with Bg&E in Rockville,Md Re Bg&E age-related Degradation & Insp Program for License Renewal. List of Meeting Attendees & Slides Used by Bg&E Encl ML20195H9311998-11-13013 November 1998 Summary of 980626 Meeting with Bg&E in Rockville,Md Re Bg&E Structures & System Walkdown Program for License Renewal. List of Meeting Attendees & Bg&E Presentation Slides Encl ML20196A1821998-11-13013 November 1998 Summary of 980624 Meeting with Util in Rockville,Md Re Integrated Plant Assessment Process for License Renewal.List of Attendees & Slides Encl ML20151Z5801998-09-0707 September 1998 Summary of 980506 Meeting with Bg&E in Rockville,Md Re Util Proposed Responses to 980213 & 19 NRC Staff Requests for Addl Info on Bg&E License Renewal Feedwater Sys (5.9) & Dfos (5.7).List of Attendees & Util Proposed Responses,Encl ML20237C4651998-08-19019 August 1998 Summary of 980729 Meeting W/Bg&E & Contractor SG Team in Rockville,Md Re Plant,Units 1 & 2 SG Replacement Project. List of Attendees & Viewgraphs Distributed at Meeting Encl ML20236X6501998-07-28028 July 1998 Summary of 980709 Meeting W/Baltimore Gas & Electric Co in Solomons,Md Re Plant Environ Scoping Meetings to Support Review of License Renewal Application.List of Attendees & Presentation Matls Encl ML20249A9271998-06-16016 June 1998 Summary of 980604 Meeting W/Licensee in Rockville,Md to Discuss Replacement of Svc Water Heat Exchanges During Spring 1999 Refueling Outage on Unit 2.List of Attendees & Licensee Agenda Encl ML20247M4981998-05-15015 May 1998 Summary of 980319 Meeting W/Util Re Improved Tss.List of Attendees Encl ML20217K5921998-04-20020 April 1998 Summary of 980407 Meeting W/Util Re Control Room Habitability Issue W/Main Steam Line Break.List of Attendees,Util Presentation Matls & NRC Concept of CR Ventilation Sys Encl ML20216C8991998-04-10010 April 1998 Summary of 980326 Meeting W/Util in Rockville,Md to Discuss Licensee Plans for Inspecting SG Tubing in Upcoming Refueling Outage ML20203E0011998-02-12012 February 1998 Summary of 980126 Meeting W/Bg&E Re Plant,Units 1 & 2 Improved Ts.List of Attendees Encl ML20199B4121998-01-20020 January 1998 Summary of 980114 Meeting W/Bg&E in Rockville,Md Re Calvert Cliffs Nuclear Power Plant,Units 1 & 2,improved Tss.List of Attendees Encl ML20198H4011998-01-0505 January 1998 Summary of 971208 Meeting W/Bg&E in Rockville,Md Re Plant Pra.List of Attendees & Viewgraphs Encl ML20197K2121997-12-15015 December 1997 Summary of 971112,13 & 18 Meeting W/Baltimore Gas & Electric in Rockville,Md Re Clarification of Calvert Cliffs Improved Tss.List of Meeting Attendees Encl ML20211L9371997-10-0202 October 1997 Summary of 970827 Meeting W/Bg&E in Rockville,Md Re Reactor Pressure Vessel 10-year Inservice Inspection Project.List of Attendees & Copy of Viewgraphs Distributed at Meeting Encl ML20217B1771997-09-10010 September 1997 Summary of 970904 Meeting W/Bg&E in Rockville,Md Re Clarification of Calvert Cliffs Ts,Sections 1.0,2.0,3.1,3.1 & 5.0.List of Meeting Attendees Encl ML20216J9411997-09-10010 September 1997 Summary of 970903 Meeting W/Baltimore Gas & Electric in Rockville,Md Re Calvert Cliffs Nuclear Power Plant,Units 1 & 2,service Water Modifications.List of Attendees & Copy of Viewgraphs Distributed at Meeting Encl ML20217P0401997-08-21021 August 1997 Summary of 961204 Meeting W/Util in Rockville,Md Re Calvert Cliffs Improved Tss.List of Attendees Encl ML20217N9991997-08-21021 August 1997 Summary of 970731 Meeting W/Bge in Rockville,Md Re Severe Accident Mitigation Alternatives Methodology.List of Attendees & Presentation Matl Encl ML20198F1221997-08-0505 August 1997 Summary of 970730 Meeting W/Bge in Rockville,Md Re Plant Improved Ts.List of Attendees Encl ML20151J5531997-07-31031 July 1997 Summary of 970715 Meeting W/Bge in Rockville,Md Re Matters Related to Operability of SW Sys & SRW ML20148K7771997-06-16016 June 1997 Summary of 970605 Senior Mgt Meeting W/Util in Rockville,Md Re License Renewal Environ Rept (Er) Template Process.List of Participants & Handouts Encl ML20148H2211997-05-27027 May 1997 Summary of 970519 Meeting W/Bge in Rockville,Md to Discuss License Renewal Er Template Process.List of Attendees Encl ML20137W5311997-04-16016 April 1997 Summary of 970408 Meeting W/Util in Rockville,Md to Discuss Responses to Staff 960830 Rai.List of Attendees Encl ML20147G8651997-03-26026 March 1997 Summary of 970226 Meeting W/Bge in Rockville MD to Discuss Util Response to Staff 960830 Rai.List of Attendees & Matls Distributed at Meeting Encl ML20137E3501997-03-24024 March 1997 Summary of 970307 Meeting W/Bge in Rockville MD to Provide Comments on License Renewal Er Template Proposed by Util. List of Meeting Participants Encl 1999-09-08
[Table view] |
Text
2 .
fM%q i 4 . [ t UNITED STATES
[ kj j NUCLEAR REGULATORY COMMISSION :
(yh j WASHINGTON. D C. 20555-0001 l
'$ ./ October 29, 1993 L
1 Docket Nos. 50-317 !
and 50-318 i
LICENSEE: Baltimore Gas and Electric Company (BG&E)
FACIlllY: Calvert Cliffs Nuclear Power Plant, Unit Nos. I and 2
SUBJECT:
MEETING
SUMMARY
REGARDING THE SEPTEMBER 29, 1993, MEETING T0 s i
DISCUSS A PROPOSED APPROACH FOR ROLL TYPE REPAIRS ON PRESSURIZER I
HEATER PENETRATIONS BACKGROUND The Calvert Cliffs, Units 1 and 2, pressurizer penetrations are fabricated from Inconel Alloy 600 material which is susceptible to primary water stress corrosion cracking (PWSCC). In 1989 reactor coolant leakage was discovered on 20 heater penetrations and one pressure / level penetration in the Unit 2 pressurizer. BG&E requested that the staff approve the use of Inconel Alloy 590 material for the replacement of Units I and 2 pressurizer penetrations as an alternative to the continued use of Inconel Alloy 600.
Inconel Alloy 690 was chosen as a preferred material because it's mechanical properties are equivalent to Inconel Alloy 600, but is less susceptible to
, PWSCC. The staff approved the request and the Unit 2 pressurizer penetrations
- were replaced.
The Unit 1 pressurizer penetrations have not been replaced and are Inconel l Alloy 600. The Unit 1 pressurizer penetrations were inspected when the Unit 2 l problem occurred and no leakage was found. The leakage at the Unit 2 !
penetrations was not only the result of Inconel Alloy 600 being susceptible to l PWSCC but was also related to the effects of some previous work which had been '
performed on the Unit 2 pressurizer penetrations.
BG&E plans to inspect the Unit 1 pressurizer heater penetrations during the I unit's upcoming refueling outage in the spring of 1994. Although there has been no indication of leaks or problems, BG&E wants to have an approved repair method in case some unforeseen problems are identified during the upcoming ,
inspection. BG&E plans to submit, for NRC review and approval, a proposed repair method which utilizes a roll / plug type of process for repairing any pressurizer penetrations where leakage is found.
PURPOSE The subject meeting was held to discuss the repair method which BG&E will submit for the NRC staff's review and approval. A list of attendees and a f p
nonproprietary version of the BG&E presentation are enclosed.
A 020103 9a22o90o91 9aso29 PDR NP4 Ri.E CENTER COPY P
ADOCK 05000317 PDR
i October 29, 1993 1
SUMMARY
BG&E and its contractor, MPR Associates, Inc., provided the presentation which is outlined in an enclosure to this sumary. The background and purpose for the meeting, as discussed above, was shortened due to the time limitations on the availability of some of the attendees. A major portion of the meeting which discussed in detail the proposed repair method, which utilizes a rolling l process and expansion plugs, was proprietary.
Details of the repair process, the qualification of the repair process, examinations which will be performed on the penetrations prior to performing repairs, requirements for ensuring adequate repairs, method to prevent repaired penetration ejection, and details of the unreviewed safety question evaluation were discussed. The analysis performed in support of the proposed repair method included consideration for normal operation, accident conditions, and transients. It was noted that the proposed repair process should result in no degradation to the pressurizer because the repairs result in secondary vessel stress without permanent deformation and no resultant metallurgical effects on the pressurizer.
An overall summary of the presentation is included in the enclosed outline.
The NRC staff identified three items for BG&E to further consider prior to making its submittal. The first item was related to the acceptance criteria for continued service as it relates to the current technical specifications ,
requirement of no primary pressure boundary leakage. The second item was a i request that any additional test related data or information related to crevice corrosion of Inconel Alloy 690 be provided. Finally, it was noted that there appeared to be interest in the proposed repair process by other utilities and, if this is the case, the proposed request should be submitted as a lead plant due to the potential generic use.
m_
Daniel G. Mcdonald, Sen or Project Manager Project Directorate I-l Division of Reactor Projects - I/II Office of Nuclear Reactor Regulation
Enclosures:
- 1. Attendees
- 2. Presentation Outline cc w/ enclosures: ,
See next page j l
e F
t
a ,
1 .
l l
1 Calvert Cliffs Nuclear Power Plant l Baltimore Gas & Electric Company Unit Nos. I and 2 i l
cc Mr. Michael Moore, President Mr. Joseph H. Walter s Calvert County Board of Engineering Division Comissioners Public Service Comission of 175 Main Street Maryland
- Prince Frederick, Maryland 20678 American Building 231 E. Baltimore Street D. A. Brune, Esquire Baltimore, Maryland 21202-3486
- General Counsel
- Baltimore Gas and Electric Company Kristen A. Burger, Esquire P.O. Box 1475 Maryland People's Counsel Baltimore, Maryland 21203 American Building, 9th Floor 231 E. Baltimore Street Jay E. Silberg, Esquire Baltimore, Maryland 21202 Shaw, Pittman, Potts and Trowbridge 2300 N Street, NW Patricia T. Birnie, Esquire Washington, DC 20037 Co-Director Maryland Safe Energy Coalition Mr. G. L. Detter, Director, NRM P.O. Box 33111 Calvert Cliffs Nuclear Power Plant Baltimore, Maryland 21218 4
1650 Calvert Cliffs Parkway Lusby, Maryland 20657-4702 Mr. Robert E. Denton 4
Vice President - Nuclear Energy 1 Resident Inspector Baltimore Gas and Electric Company c/o U.S. Nuclear Regulatory Calvert Cliffs Nuclear Power Plant !
! Comission 1650 Calvert Cliffs Parkway !
j P.O. Box 287 Lusby, Maryland 20657-4702 St. Leonard, Maryland 20685 Mr. Richard I. McLean
- Administrator - Radioecology Department of Natural Resources 580 Taylor Avenue Tawes State Office Building B3 j Annapolis, Maryland 21401 4
Regional Administrator, Region I l U.S. Nuclear Regulatory Comission 475 Allendale Road King of Prussia, Pennsylvania 19406 l
1 i 4
l
4 DISTRIBUTION LIST FOR MEETING
SUMMARY
OF 09/29/93
- Docket File NRC & Local PDRs
- PDI-l Reading T. Murley/F. Miraglia,12/G/18 J. Partlow, 12/G/18 S. Varga J. Calvo R. A. Capra
- D. Mcdonald C. Vogan OGC E. Jordan, MNBB 3701 W. Koo, 7/D/4 R. Hermann, 7/D/4 ACRS (10)
V. McCree, EDO, 17/G/21
- C. Cowgill, Region I cc: Licensee & Service List
ENCLOSURE 1 September 29. 1993 l l
Proposed Acoroach For Roll Tvoe l Repairs On Pressurizer Heater ,
Penetrations Meetino l List of Attendees i i
l Participants Oraanization i Daniel Mcdonald NRC/NRR/DRP/PDI-I j Robert A. Capra NRC/NRR/DRP/PDI-1 William H. Koo NRC/NRR/DE/EMCB i Robert A. Hermann NRC/NRR/DE/EMCB !
Joe Richards BG&E I Getachew Tesfaye BG&E Bernie Rudell BG&E Bruce Montgomery BG&E Jeffrey C. Pochler BGLE Joselito 0. Calle BG&E
, Robert O. Hardies BG&E Noman Cole MPR Associate ]
Sterling Weems MPR Associate William McCurdy MPR Associate Bob Borsum B&W Nuclear Technologies Kirsten Burger MD Office People's Counsel l
l I
I l
i l
i l
_ _ . . _ , _ . . , . _ _ _ . _ _ _ _ . . _ , . , _ . . . . . ~ . _ . _ , . _ . , . . . , _ , . . . . . , , , . . . . _ . . . . , . , _ _ , , . . _ , ,
l Escwsunt 2 l
CALVERT CLIFFS PRESSURIZER ROLL AND PLUG REPAIRS FOR INCONEL 600 WELDED SLEEVE TYPE NOZZLES
Introduction:
J. Richards Technical Presentation: S. Weems l
l Baltimore Gas and Electric Company September 29,1993 ,
. , - , , ,...w.-- .- , - , ..--m,e-
I OUTLINE OF TECHNICAL PRESENTATION 1
- 1. Background on Cracking and Repairs of Sleeve Type )
Nozzles !
i l
- Type of Nozzles Leakage Path Previous Roll Repairs of Sleeve Type Nozzles Key features
- 2. Calvert Cliffs inconel 600 Pressurizer Sleeve Type Nozzles Present Status Repair Designs Roll Repair of Instrument Nozzle l
Roll / Plug Repair of Heater Sleeve l
Qualification of Repairs l
Mockup Tests l
Analyses l
l Examinations before Repair ,
l -
Repair Inspection Requirements for Leakage !
- 3. Summary l
l l__ __ _ __ - . _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ . . _ _ . _ _ __ . - - . _ . . - . - _ _ . . -
Full Penetration Wcld
/ M -
/
. - 1. Integral Forging Nozzle
.- Seal and Retaining Weld
. . r -
. . , f.
=
V. f P -f //
- 2. Sleeve Type Nozzle e
e
. - - - - - y- - w , ,,, ,c,----w~---.w.wwww,.,=,w ,ee-<,,7,,.,.,,aeTv --ewr--,--wweew e-w-v,ew-v- sew +v-e--*e-*ww e- w-e--w-'ewo-T-*-w-- w vhWr-+-4 -w e-'w- r- et-wu '-err w-v
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1
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MPR ASSOC:ATES -
F-90~84-31 ]
8/23/90 l
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. C:ad . ,
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l g l Existing Weld
/g -
Existing Weld Sutter
/ Y
/ 'Ty;ical 1.ccation Of
/ '
In-Sewice Induced
/'I Stress Corresten
/ 3/ Cracks
/
/ / If
. essel Structural / /
/
/
/
/f N /
, /
g Ty;ical L.eak Fath With Cracked Steeve Steeve
/
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t' ub I
l (9 Note: Only One Cf Several Different Weld Configuratiens Used is Shcwn AbcVe.
. TYPICAL CRACK LOCATION IN EXISTING DESIGN WELDED _ SLEEVE TYPE NOZZLE (9 FIGURE 2
ROLL REPAIR EXPERIENCE l l
l l
- BWR Reactor Vessel Sleeve Type Nozzles l Repairs I f
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Number of Size of Date of Nozzles Sleeve Type Plant Repair Repaired Nozzle -
Oyster Creek 1974 1 2" OD Nozzle !
Big Rock 1979 1 5.2" OD Nozzle Point _.
NMP-1 1984-1993 25 6" OD Nozzle Experience -- Excellent
- NRC approved--per safety evaluations (and per 10CFR50.55a(a)(3) for NMP-1).
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. j 7/32' Thk -
Field Weld; Clad
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71/8" Thk '
l Bottom Head i Reactor Vessel ,
2.00' O.D.
I Incore Instrurnent Sleeve Nozzle
- 1.375" 1.D.
BWR Incore Instrument Sleeve Nozzle 1 F424644
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l 304 SS Weld / /
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304 SS Stub Tube \ / \
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24 ss Cladding
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NY / / j Carbon Steel !
Vessel /) , _ , i jN l
'/ Roll Repair Area
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CRDM Housing
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_qRD PENETRABON CONFIGURABON
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ANALYSES
- Normal Operation Accident Transients Tendency to Loosen Joint Fatigue J
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't NO STRUCTURAL DEGRADATION OF VESSEL AFTER REPAlR Stress corrosion cracking will not occur in vessel P3 material (based on experience).
Fatigue crack growth will not propagate into vessel P3 material (based on experience and calculations).
No significant general corrosion of vessel (per analysis and experience).
Roll / plug repairs result only in secondary vessel stress without permanent deformation (based on analysis and mockup tests).
No metallurgical effects on vessel.
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i EXAMINATIONS BEFORE REPAIR
- Surface examinations to ensure sleeve nozzle cracking is as expected.
- Visual examinations to ensure no significant vessel damage (due to erosion / corrosion).
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i LEAKAGE INSPECTION REQUIREMENTS FOR REPAIRED JOINTS l
- Visual inspection (with insulation removed as needed) i 1
- Boric acid deposits.
Iron oxide stains.
Water dripping. ,
1 Frequency During hydrostatic test after repair (before plant is operated).
During shutdowns per existing plant requirements.
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Acceptance criteria for continued service (virtually no leakage allowable).
Maximum of 0.1 cubic inch of boric acid deposit per inspection interval.
Maximum of one drop of water every 10 minutes.
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SUMMARY
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- and poses no threat to the vessel.
- The basic roll repair approach for pressurizer sleeve type
! nozzles at CCNPP has been previously accepted and
- applied in the field (i.e., a historical precedent is available).
- Repair quality obtained by use of appropriately conservative safety factors and rigorous testing.
Repair safety enhanced by redundant retention features.
This repair reduces personnel exposure, outage time, and cost as demonstrated by previous applications.
BG&E will submit a request for NRC authorization for these roll / plug repairs per 10CFR50.55a(a)(3)(1) for possible use d
in the 1994 refueling outage.
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October 29, 1993
SUMMARY
l BG&E and its contractor, MPR Associates, Inc., provided the presentation which ,
is outlined in an enclosure to this summary. The background and purpose for )
the meeting, as discussed above, was shortened due to the time limitations on !
the availability of some of the attendees. A major portion of the meeting which discussed in detail the proposed repair method, which utilizes a rolling !
process and expansion plugs, was proprietary.
Details of the repair process, the qualification of the repair process, i examinations which will be performed on the penetrations prior to performing '
repairs, requirements for ensuring adequate repairs, method to prevent i repaired penetration ejection, and details of the unreviewed safety question .
evaluation were discussed. The analysis performed in support of the proposed t repair method included consideration for normai operation, accident ,
conditions, and transients. It was noted that the proposed repair process :
should result in no degradation to the pressurizer because the repairs result in secondary vessel stress without permanent deformation and no resultant i metallurgical effects on the pressurizer. i An overall summary of the presentation is included in the enclosed outline.
The NRC staff identified three items for BG&E to further consider prior to !
making its submittal. The first item was related to the acceptance criteria i for continued service as it relates to the current technical specifications ,
requirement of no primary pressure boundary leakage. The second item was a j request that any additional test related data or information related to !
crevice corrosion of Inconel Alloy 690 be provided. Finally, it was noted ,
that there appeared to be interest in the proposed repair process by other i utilities and, if this is the case, the proposed request should be submitted !
as a lead plant due to the potential generic use.
- Orginal signed by:
Daniel G. Mcdonald, Senior Project Manager
- Project Directorate I-I Division of Reactor Projects - I/II Office of Nuclear Reactor Regulation
Enclosures:
- 1. Attendees
- 2. Presentation Outline .
cc w/ enclosures:
See next page Distribution:
See attached sheet n LA:PDI-l PM:PDI-l h k D:PDI-l CVogan 0 (F DMcDonald mm RACapra #
if/h93 $ /h 93 10 /23 /93 / / / / / / l OFFICIAL RECORD COPY FILENAME: CC50317.MTS
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