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| | number = ML063480515 | | | number = ML063480515 |
| | issue date = 01/22/2007 | | | issue date = 01/22/2007 |
| | title = Three Mile Island, Unit 1, RAI, Relief Request to Utilize ASME Code Case N-659 | | | title = RAI, Relief Request to Utilize ASME Code Case N-659 |
| | author name = Saba F E | | | author name = Saba F |
| | author affiliation = NRC/NRR/ADRO/DORL/LPLI-2 | | | author affiliation = NRC/NRR/ADRO/DORL/LPLI-2 |
| | addressee name = Crane C M | | | addressee name = Crane C |
| | addressee affiliation = AmerGen Energy Co, LLC | | | addressee affiliation = AmerGen Energy Co, LLC |
| | docket = 05000289 | | | docket = 05000289 |
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| =Text= | | =Text= |
| {{#Wiki_filter:January 22, 2007Mr. Christopher M. CranePresident and Chief Executive Officer AmerGen Energy Company, LLC 4300 Winfield Road Warrenville, IL 60555 | | {{#Wiki_filter:January 22, 2007 Mr. Christopher M. Crane President and Chief Executive Officer AmerGen Energy Company, LLC 4300 Winfield Road Warrenville, IL 60555 |
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| ==SUBJECT:== | | ==SUBJECT:== |
| THREE MILE ISLAND, UNIT 1 - REQUEST FOR ADDITIONAL INFORMATIONREGARDING RELIEF REQUEST TO UTILIZE ASME CODE CASE N-659. (TAC NO. MD3170) | | THREE MILE ISLAND, UNIT 1 - REQUEST FOR ADDITIONAL INFORMATION REGARDING RELIEF REQUEST TO UTILIZE ASME CODE CASE N-659. (TAC NO. MD3170) |
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| ==Dear Mr. Crane:== | | ==Dear Mr. Crane:== |
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| By letter dated September 28, 2006 (Agencywide Documents Access and Management SystemAccession No. ML062720058), AmerGen Energy Company (the licensee) requested relief from certain American Society of Mechanical Engineers Boiler and Pressure Vessel Code (ASME Code) requirements at Three Mile Island, Unit 1. Specifically, the licensee has requested to use an alternative ultrasonic examination method in lieu of the radiographic examinationrequired by the ASME Code, Section III, Subarticle NC-5222. Additionally, the licenseerequested relief from the required examination to include 100% of the volume of the entire weld.The Nuclear Regulatory Commission staff has reviewed the information provided in the reliefrequest and has identified the enclosed request for additional information (RAI). This RAI was discussed with Thomas Loomis of your staff on January 8, 2007, and it was agreed that your response would be provided within 30 days from the date of this letter.Please contact me at 301-415-1447, if you have any questions.Sincerely,/RA/Farideh E. Saba, Project Manager Plant Licensing Branch I-2 Division of Operating Reactor Licensing Office of Nuclear Reactor RegulationDocket No. 50-289 | | By letter dated September 28, 2006 (Agencywide Documents Access and Management System Accession No. ML062720058), AmerGen Energy Company (the licensee) requested relief from certain American Society of Mechanical Engineers Boiler and Pressure Vessel Code (ASME Code) requirements at Three Mile Island, Unit 1. Specifically, the licensee has requested to use an alternative ultrasonic examination method in lieu of the radiographic examination required by the ASME Code, Section III, Subarticle NC-5222. Additionally, the licensee requested relief from the required examination to include 100% of the volume of the entire weld. |
| | The Nuclear Regulatory Commission staff has reviewed the information provided in the relief request and has identified the enclosed request for additional information (RAI). This RAI was discussed with Thomas Loomis of your staff on January 8, 2007, and it was agreed that your response would be provided within 30 days from the date of this letter. |
| | Please contact me at 301-415-1447, if you have any questions. |
| | Sincerely, |
| | /RA/ |
| | Farideh E. Saba, Project Manager Plant Licensing Branch I-2 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket No. 50-289 |
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| ==Enclosure:== | | ==Enclosure:== |
| As stated cc w/encl: See next page | | As stated cc w/encl: See next page |
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| ML063480515OFFICELPLI-2/PMLPLI-2/LACPNB/BC LPLI-2/BC NAMEFSabaCRaynorTChanHChernoff DATE01/08/0701/03/0701/08/071/22/07 Three Mile Island Nuclear Station, Unit 1 cc:
| | ML063480515 OFFICE LPLI-2/PM LPLI-2/LA CPNB/BC LPLI-2/BC NAME FSaba CRaynor TChan HChernoff DATE 01/08/07 01/03/07 01/08/07 1/22/07 Three Mile Island Nuclear Station, Unit 1 cc: |
| Site Vice President - Three Mile Island Nuclear Station, Unit 1 AmerGen Energy Company, LLC P. O. Box 480 Middletown, PA 17057Senior Vice President - Nuclear ServicesAmerGen Energy Company, LLC 4300 Winfield Road Warrenville, IL 60555Vice President - Operations, Mid-Atlantic AmerGen Energy Company, LLC 200 Exelon Way, KSA 3-N Kennett Square, PA 19348Vice President - Licensing and RegulatoryAffairs AmerGen Energy Company, LLC 4300 Winfield Road Warrenville, IL 60555Regional Administrator Region I U.S. Nuclear Regulatory Commission | | Site Vice President - Three Mile Island Nuclear Director - Licensing and Regulatory Affairs Station, Unit 1 AmerGen Energy Company, LLC AmerGen Energy Company, LLC 200 Exelon Way, KSA 3-E P. O. Box 480 Kennett Square, PA 19348 Middletown, PA 17057 Director Senior Vice President - Nuclear Services Bureau of Radiation Protection AmerGen Energy Company, LLC Pennsylvania Department of 4300 Winfield Road Environmental Protection Warrenville, IL 60555 Rachel Carson State Office Building P.O. Box 8469 Vice President - Operations, Mid-Atlantic Harrisburg, PA 17105-8469 AmerGen Energy Company, LLC 200 Exelon Way, KSA 3-N Plant Manager - Three Mile Island Nuclear Kennett Square, PA 19348 Station, Unit 1 AmerGen Energy Company, LLC Vice President - Licensing and Regulatory P. O. Box 480 Affairs Middletown, PA 17057 AmerGen Energy Company, LLC 4300 Winfield Road Regulatory Assurance Manager - Three Warrenville, IL 60555 Mile Island Nuclear Station, Unit 1 AmerGen Energy Company, LLC Regional Administrator P.O. Box 480 Region I Middletown, PA 17057 U.S. Nuclear Regulatory Commission 475 Allendale Road Ronald Bellamy, Region I King of Prussia, PA 19406 U.S. Nuclear Regulatory Commission 475 Allendale Road Chairman King of Prussia, PA 19406 Board of County Commissioners of Dauphin County Michael A. Schoppman Dauphin County Courthouse Framatome ANP Harrisburg, PA 17120 Suite 705 1911 North Ft. Myer Drive Chairman Rosslyn, VA 22209 Board of Supervisors of Londonderry Township Vice President, General Counsel and R.D. #1, Geyers Church Road Secretary Middletown, PA 17057 AmerGen Energy Company, LLC 2301 Market Street, S23-1 Senior Resident Inspector (TMI-1) Philadelphia, PA 19101 U.S. Nuclear Regulatory Commission P.O. Box 219 Middletown, PA 17057 |
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| 475 Allendale Road King of Prussia, PA 19406ChairmanBoard of County Commissioners of Dauphin County Dauphin County Courthouse Harrisburg, PA 17120ChairmanBoard of Supervisors of Londonderry Township R.D. #1, Geyers Church Road Middletown, PA 17057Senior Resident Inspector (TMI-1)U.S. Nuclear Regulatory Commission P.O. Box 219 Middletown, PA 17057Director - Licensing and Regulatory AffairsAmerGen Energy Company, LLC 200 Exelon Way, KSA 3-E Kennett Square, PA 19348DirectorBureau of Radiation Protection Pennsylvania Department of Environmental Protection Rachel Carson State Office Building P.O. Box 8469 Harrisburg, PA 17105-8469Plant Manager - Three Mile Island Nuclear Station, Unit 1 AmerGen Energy Company, LLC P. O. Box 480 Middletown, PA 17057Regulatory Assurance Manager - ThreeMile Island Nuclear Station, Unit 1 AmerGen Energy Company, LLC P.O. Box 480 Middletown, PA 17057Ronald Bellamy, Region IU.S. Nuclear Regulatory Commission
| | Three Mile Island Nuclear Station, Unit 1 cc: |
| | Dr. Judith Johnsrud National Energy Committee Sierra Club 433 Orlando Avenue State College, PA 16803 Eric Epstein TMI Alert 4100 Hillsdale Road Harrisburg, PA 17112 Correspondence Control Desk AmerGen Energy Company, LLC P.O. Box 160 Kennett Square, PA 19348 Manager Licensing - Three Mile Island Nuclear Station, Unit 1 Exelon Generation Company, LLC 200 Exelon Way, KSA 3-E Kennett Square, PA 19348 Assistant General Counsel AmerGen Energy Company, LLC 200 Exelon Way Kennett Square, PA 19348 |
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| 475 Allendale Road King of Prussia, PA 19406Michael A. SchoppmanFramatome ANP Suite 705 1911 North Ft. Myer Drive Rosslyn, VA 22209Vice President, General Counsel andSecretary AmerGen Energy Company, LLC 2301 Market Street, S23-1 Philadelphia, PA 19101 Three Mile Island Nuclear Station, Unit 1 cc:
| | REQUEST FOR ADDITIONAL INFORMATION THREE MILE ISLAND, UNIT 1 RELIEF REQUEST TO UTILIZE ASME CODE CASE N-659 TAC NO. MD3170 DOCKET NO. 50-289 |
| Dr. Judith JohnsrudNational Energy Committee Sierra Club 433 Orlando Avenue State College, PA 16803Eric EpsteinTMI Alert 4100 Hillsdale Road Harrisburg, PA 17112Correspondence Control DeskAmerGen Energy Company, LLC P.O. Box 160 Kennett Square, PA 19348Manager Licensing - Three Mile Island Nuclear Station, Unit 1 Exelon Generation Company, LLC 200 Exelon Way, KSA 3-E Kennett Square, PA 19348Assistant General CounselAmerGen Energy Company, LLC 200 Exelon Way Kennett Square, PA 19348
| | : 1. By letter dated September 28, 2006, AmerGen Energy Company requested to use American Society of Mechanical Engineers Boiler and Pressure Vessel Code (ASME Code) Case N-659, Use of Ultrasonic Examination in Lieu of Radiography for Weld Examination Section III, Division 1". The Nuclear Regulatory Commission (NRC) has reviewed the ASME Code Case N-659 for endorsement as conditionally acceptable in draft Regulatory Guide DG-1134, Inservice Inspection Code Case Acceptability, ASME Section XI, Division 1. Proposed conditions were provided in the Federal Register of October 27, 2006 (Volume 71, Number 208), Pages 62948-62949. In order for the NRC staff to continue its review, please discuss how the proposed NRC conditions will be addressed for Three Mile Island, Unit 1. |
| | | : 2. ASME Code Case N-659 states that the examination area shall include 100% of the volume of the entire weld, plus 0.5T of each side of the welds, where T is the thickness of the weld. After reviewing figures 2 and 3 of your submittal, the NRC staff is unclear as to what is the exact weld area that will not be examined. Please provide the following: |
| REQUEST FOR ADDITIONAL INFORMATIONTHREE MILE ISLAND, UNIT 1 RELIEF REQUEST TO UTILIZE ASME CODE CASE N-659TAC NO. MD3170DOCKET NO. 50-2891.By letter dated September 28, 2006, AmerGen Energy Company requested to useAmerican Society of Mechanical Engineers Boiler and Pressure Vessel Code (ASME Code) Case N-659, "Use of Ultrasonic Examination in Lieu of Radiography for Weld Examination Section III, Division 1". The Nuclear Regulatory Commission (NRC) hasreviewed the ASME Code Case N-659 for endorsement as conditionally acceptable in draft Regulatory Guide DG-1134, "Inservice Inspection Code Case Acceptability, ASME Section XI, Division 1". Proposed conditions were provided in the Federal Register ofOctober 27, 2006 (Volume 71, Number 208), Pages 62948-62949. In order for the NRC staff to continue its review, please discuss how the proposed NRC conditions will be addressed for Three Mile Island, Unit 1.2.ASME Code Case N-659 states that the examination area shall include 100% of thevolume of the entire weld, plus 0.5T of each side of the welds, where T is the thickness of the weld. After reviewing figures 2 and 3 of your submittal, the NRC staff is unclear as to what is the exact weld area that will not be examined. Please provide the following: | | a) Please discuss the computer modeling, if any, used to determine the appropriate transducer size and angles for maximum volume coverage. Evaluate if using different shapes can increase the coverage. |
| a)Please discuss the computer modeling, if any, used to determine the appropriatetransducer size and angles for maximum volume coverage. Evaluate if using different shapes can increase the coverage. b)Please discuss other non-destructive methods (such as, surface examinationand/or eddy current) that were considered for improving the volume coverage and can get some depth as well. Explain whether and how the volume coverage can be improved.}} | | b) Please discuss other non-destructive methods (such as, surface examination and/or eddy current) that were considered for improving the volume coverage and can get some depth as well. Explain whether and how the volume coverage can be improved.}} |
Letter Sequence RAI |
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MONTHYEARML0627200582006-09-28028 September 2006
Request for Relief to Utilize Code Case N-659, Use of Ultrasonic Examination in Lieu of Radiography for Weld Examination Section III, Division 1.
Project stage: Request
ML0634805152007-01-22022 January 2007
RAI, Relief Request to Utilize ASME Code Case N-659
Project stage: RAI
ML0709203362007-03-30030 March 2007
Request for Relief to Utilize Code Case N-659, Use of Ultrasonic Examination in Lieu of Radiography for Weld Examination Section III, Division 1.
Project stage: Request
ML0713504682007-07-11011 July 2007
Completion of NRC Activities Related to Relief Request No. 2006-TMI-01, Use of ASME Code Case N-659
Project stage: Other
2007-01-22
[Table View] |
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Category:Letter
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Notice of Intent to Pursue Subsequent License Renewal for Three Mile Island Nuclear Station, Unit 1
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Updated Post-Shutdown Decommissioning Activities Report, Rev. 6
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Cy 2023 Summary of Decommissioning Trust Fund Status
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Letter - Three Mile Island Station, Unit 2, Issuance of Amendment No. 68, Historic and Cultural Resources
IR 05000320/20240012024-08-28028 August 2024
TMI-2 Solutions, LLC, Three Mile Island Nuclear Station, Unit 2 - NRC Inspection Report Nos. 05000320/2024001 and 05000320/2024002
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Response to Request for Additional Information for the TMI-2 Post-Shutdown Decommissioning Activities Report, Rev. 6
ML24220A2742024-08-15015 August 2024
Request for Additional Information Clarification Call Regarding Three Mile Island Station, Unit 2, Amended Post-Shutdown Decommissioning Activities Report, Rev. 6
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Amendment No 68, Historic and Cultural Resources Cover Letter
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Constellation Energy Generation, LLC, Three Mile Island Nuclear Station, Unit 1 - NRC Inspection Report No. 07200077/2024001
ML24157A3672024-06-13013 June 2024
Updated Post-Shutdown Decommissioning Activities Report Request for Additional Information Transmittal Letter
ML24135A1972024-06-13013 June 2024
– Exemption from Select Requirements of 10 CFR Part 73 (EPID L-2023-LLE-0091 (Security Notifications, Reports, and Recordkeeping and Suspicious Activity Reporting))
ML24151A6482024-06-0303 June 2024
Changes in Reactor Decommissioning Branch Project Management Assignments for Some Decommissioning Facilities
ML24120A3242024-05-24024 May 2024
TMI-2 Email to Fws
RS-24-055, 2023 Corporate Regulatory Commitment Change Summary Report2024-05-17017 May 2024
2023 Corporate Regulatory Commitment Change Summary Report
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And Three Mile Island, Unit 2 - 2023 Occupational Radiation Exposure Annual Report
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Annual Radiological Environmental Operating Report
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(TMI-2), Supplement to Request for Exemption from Enhanced Weapons, Firearms Background Checks, and Security Event Notifications Implementation
RS-24-002, Constellation Energy Generation, LLC - Annual Property Insurance Status Report2024-04-0101 April 2024
Constellation Energy Generation, LLC - Annual Property Insurance Status Report
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(TMI-2), Decommissioning Trust Fund Annual Report
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Notification of Amended Post-Shutdown Decommissioning Activities Report (PSDAR) in Accordance with 10 CFR 50.82(a)(7), Revision 6
ML24065A0042024-03-28028 March 2024
Submittal of 2023 Aircraft Movement Data Annual Report
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(TMI-2) - Annual Notification of Property Insurance Coverage
RS-24-023, Report on Status of Decommissioning Funding.2024-03-22022 March 2024
Report on Status of Decommissioning Funding.
ML24052A0602024-03-20020 March 2024
– Exemption from Select Requirements of 10 CFR Part 73 (EPID L-2023-LLE-0061 (Security Notifications, Reports, and Recordkeeping and Suspicious Activity Reporting))
ML24075A0062024-03-14014 March 2024
List of Threatened and Endangered Species That May Occur in Your Proposed Project Location or May Be Affected by Your Proposed Project
ML24074A3922024-03-14014 March 2024
Response to Request for Additional Information for the TMI-2 Post-Shutdown Decommissioning Activities Report, Rev. 5
ML24073A2312024-03-13013 March 2024
And Three Mile Island Nuclear Station, Unit 2 - Management Change
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License Amendment Request – Three Mile Island, Unit 2, Historic and Cultural Resources Review, Response to Request for Additional Information
IR 05000320/20230042024-02-0707 February 2024
TMI-2 Solutions, LLC, Three Mile Island Nuclear Station, Unit 2 - NRC Inspection Report 05000320/2023004
ML24038A0222024-02-0505 February 2024
Achp Letter on Section 106 Programmatic Agreement Participation
IR 05000289/20230062024-01-29029 January 2024
Constellation Energy Generation, LLC, Three Mile Island Nuclear Station, Unit 1 - NRC Inspection Report No. 05000289/2023006
ML23342A1242024-01-0909 January 2024
Independent Spent Fuel Storage Installation Security Inspection Plan
ML23325A1092024-01-0505 January 2024
Review of the Management Plan for Three Mile Island Station, Unit No. 2, Debris Material
ML23354A2062023-12-20020 December 2023
(TMI-2), Request for Exemption from Enhanced Weapons, Firearms Background Checks, and Security Event Notifications Implementation
ML23354A2112023-12-20020 December 2023
Response to Request for Additional Information for the TMI-2 Post-Shutdown Decommissioning Activities Report, Rev. 5
IR 05000320/20230032023-11-28028 November 2023
TMI-2 Solutions, LLC, Three Mile Island Nuclear Station, Unit 2, NRC Inspection Report No. 05000320/2023003
ML23243A9082023-08-29029 August 2023
Shpo Letter to TMI-2 Regarding Section 106 Activities
IR 05000320/20230022023-08-17017 August 2023
TMI-2 Solutions, LLC, Three Mile Island Nuclear Station, Unit 2 - NRC Inspection Report 05000320/2023002
ML23216A1732023-08-14014 August 2023
Consultation Letter to Christine Turner for TMI-2
ML23216A1782023-08-14014 August 2023
Consultation Letter to Steve Letavic for TMI-2
IR 05000289/20230052023-08-14014 August 2023
Constellation Energy Generation, LLC, Three Mile Island Nuclear Station, Unit 1 - NRC Inspection Report 05000289/2023005
ML23216A1752023-08-14014 August 2023
Consultation Letter to Joanna Cain for TMI-2
ML23216A1742023-08-14014 August 2023
Consultation Letter to David Morrison for TMI-2
ML23216A1772023-08-14014 August 2023
Consultation Letter to Rebecca Countess for TMI-2
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(TMI-2), Response to Requests for Additional Information for the TMI-2 Post-Shutdown Decommissioning Activities Report, Rev. 5
ML23200A1882023-07-31031 July 2023
TMI-2 Correction Letter Amendment 67
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Letter from PA Shpo to TMI-2 Solutions on Cultural and Historic Impacts of Decommissioning
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ML23167A4642023-07-0505 July 2023
Letter - TMI-2- Exemption 10 CFR Part 20 Append G Issuance
ML23167A0312023-06-28028 June 2023
Acceptance Review and Schedule for the Request for Exemption from a Requirement from 10 CFR 20, Appendix G, Section Iii.E, EPID L-2023-LLE-0016
2024-09-09
[Table view]
Category:Request for Additional Information (RAI)
MONTHYEARML24220A2742024-08-15015 August 2024
Request for Additional Information Clarification Call Regarding Three Mile Island Station, Unit 2, Amended Post-Shutdown Decommissioning Activities Report, Rev. 6
ML24157A3672024-06-13013 June 2024
Updated Post-Shutdown Decommissioning Activities Report Request for Additional Information Transmittal Letter
ML24011A2352024-01-11011 January 2024
Eco Request for Additional Information for 2023 License Amendment Request 1-11-24
ML23187A0202023-06-29029 June 2023
TMI Unit 2 RAI Related to the Amended Post-Shutdown Decommissioning Activities Report
ML23187A0332023-06-29029 June 2023
TMI Unit 2, PSDAR Rev. 5 RAIs
ML23082A3432023-03-31031 March 2023
Enclosure - RAI - Three Mile Island, Unit 2 - Acceptance Review and Request for Additional Information for the Historic and Cultural Resources License Amendment Request - EPID: 2023-LLA-0026
ML22357A0142022-12-22022 December 2022
NRC Request for Additional Information Related to the TMI-2 Pdms Transition License Amendment Request
ML22210A0882022-07-29029 July 2022
Enclosure - Three Mile Island, Unit No. 2 - Request for Additional Information for Requested Licensing Action Regarding Decommissioning Technical Specifications
ML22143A8902022-05-23023 May 2022
Request for Additional information- TMI-1 ISFSI Only Physical Security License Amendment Request
ML22125A0122022-04-28028 April 2022
Clarification RAI Partial Response Email from C Smith to a Snyder
ML22110A0202022-04-19019 April 2022
Unit 1 Request for Additional Information
ML22038A9362022-02-0707 February 2022
TMI2 Accident Analyses Questions
ML21256A1902021-09-10010 September 2021
NRR E-mail Capture - Exelon Generation Company, LLC - Request for Additional Information Regarding License Transfer Application
ML21144A2132021-05-24024 May 2021
NRR E-mail Capture - Exelon Generation Company, LLC - Request for Additional Information Regarding License Transfer Application
ML20164A0902020-06-10010 June 2020
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ML19319B2082019-11-15015 November 2019
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ML19179A0612019-07-19019 July 2019
Three Mile Point 1 - Supplemental Information Needed to Proposed Alternative to Use ASME Code Case N-879
ML18220A7832018-08-0707 August 2018
NRR E-mail Capture - Request for Additional Information Related to TMI Fall 2017 Steam Generator Tube Inspection Report
ML18212A2712018-07-31031 July 2018
NRR E-mail Capture - Request for Additional Information Related to Amendment Regarding Decommissioning ERO Staffing Changes
ML17285B1962017-10-27027 October 2017
Request for Additional Information Regarding Generic Letter 2016-01, Monitoring of Neutron-Absorbing Materials in Spent Fuel Pools.
ML17062A4912017-03-0303 March 2017
NRR E-mail Capture - Exelon Generation Company, LLC - Request for Additional Information Regarding Fleet Alternative to RPV Threads in Flange Examination (CAC Nos. MF8712-MF8729)
ML16356A4802016-12-21021 December 2016
NRR E-mail Capture - RAIs on TMI License Amendment Request for Approval of Changes to the Three Mile Island Nuclear Station Emergency Plan Related to Staffing
ML16337A0072016-12-0101 December 2016
NRR E-mail Capture - Draft RAIs Three Mile Island Nuclear Station, Units 1 and 2, License Amendment Request for Approval of Changes to the Three Mile Island Nuclear Station Emergency Plan Related to Staffing
ML16287A4042016-10-11011 October 2016
Notification of Conduct of a Triennial Fire Protection Baseline Inspection
ML15230A5332015-08-18018 August 2015
Draft Request for Additional Information
ML15020A7372015-03-0808 March 2015
Request for Additional Information Regarding Related to December 22, 2014, Report Submitted Pursuant to 10 CFR 50.46
ML14307A1172014-11-14014 November 2014
Request for Additional Information Regarding Relief Request RR-14-01 Concerning Alternative Root Mean Square Depth Sizing Requirements
ML14240A4122014-09-0404 September 2014
Request for Additional Information Regarding License Amendment Request to Eliminate Certain Technical Specification Reporting Requirements (Tac MF0628)
ML14134A3222014-05-22022 May 2014
Request for Additional Information Regarding Review of Three Mile Island Nuclear Station Unit 1 Cycle 20 Core Operating Limits Report
ML14134A1722014-05-14014 May 2014
Draft RAIs in Support of NRC Staff Review of TMI Cycle 20 COLR
ML14052A2592014-02-27027 February 2014
Request for Additional Information Regarding Proposed License Amendment Request to Revise Technical Specification Reporting Requirements
ML14030A5832014-01-29029 January 2014
Draft Request for Additional Information Proposed Revision to Technical Specifications Reporting Requirements Exelon Generation Company, LLC Three Mile Island Nuclear Station, Unit 1
ML13266A2852013-10-21021 October 2013
Request for Additional Information on Three Mile Island Nuclear Station Unit 2 - post-shutdown Decommissioning Activities Report
ML13276A6492013-10-0303 October 2013
Notification of Conduct of a Triennial Fire Protection Baseline Inspection
ML13269A1792013-09-25025 September 2013
Draft Request for Additional Information
ML13253A2252013-09-10010 September 2013
Draft Request for Additional Information
ML13249A2072013-09-0505 September 2013
Draft Request for Additional Information
ML13193A1752013-07-22022 July 2013
Request for Additional Information Regarding Revision to Pressure and Temperature Limit Curves and Exemption Request for Initial Reference Temperature Values
ML13196A3382013-07-15015 July 2013
2013 Decommissioning Fund Report RAI
ML13193A1452013-07-12012 July 2013
Electronic Transmission, Draft Request for Additional Information Regarding Proposed Revision to Pressure and Temperature Limit Curves and Exemption Request for Initial Reference Temperature Values (TAC Nos. MF0425 & MF0426)
ML13176A4702013-06-26026 June 2013
Request for Additional Information Regarding Overall Integrated Plan in Response to Order Number EA-12-051, Reliable Spent Fuel Pool Instrumentation
ML13177A3902013-06-26026 June 2013
Electronic Transmission, Draft Request for Additional Information Regarding Overall Integrated Plan in Response to Order Number EA-12-051, Reliable Spent Fuel Pool Instrumentation
ML13066A2442013-03-19019 March 2013
Request for Additional Information Regarding Fifth Inservice Test Interval Relief Request PR-01 Nuclear Services Closed Cooling Water Flow Measurement
ML13066A1262013-03-0707 March 2013
Electronic Transmission, Draft Request for Additional Information Regarding Fifth Inservice Test Interval Relief Request PR-01 Nuclear Services Closed Cooling Water Flow Measurement
ML13044A3212013-03-0505 March 2013
Request for Additional Information Regarding 30-Day Report for Emergency Core Cooling System Model Changes Pursuant to the Requirements of 10 CFR 50.46
ML13045A6432013-02-25025 February 2013
Request for Additional Information Regarding Relief Request VR-01, Associated with the Fifth Inservice Testing Interval
ML13051A3852013-02-25025 February 2013
Request for Additional Information Regarding End-of-Interval Relief Request RR-12-01, Pressure Nozzle-to-Head Weld Exams
ML13050A6362013-02-20020 February 2013
Draft RAI Memo
ML13044A3122013-02-13013 February 2013
Electronic Transmission, Draft Request for Additional Information Regarding 30-Day Report for Emergency Core Cooling System Model Changes Pursuant to the Requirements of 10 CFR 50.46
ML13044A6652013-02-13013 February 2013
Electronic Transmission, Draft Request for Additional Information Regarding Relief Request VR-01, Associated with the Fifth Inservice Testing Interval
2024-08-15
[Table view] |
Text
January 22, 2007 Mr. Christopher M. Crane President and Chief Executive Officer AmerGen Energy Company, LLC 4300 Winfield Road Warrenville, IL 60555
SUBJECT:
THREE MILE ISLAND, UNIT 1 - REQUEST FOR ADDITIONAL INFORMATION REGARDING RELIEF REQUEST TO UTILIZE ASME CODE CASE N-659. (TAC NO. MD3170)
Dear Mr. Crane:
By letter dated September 28, 2006 (Agencywide Documents Access and Management System Accession No. ML062720058), AmerGen Energy Company (the licensee) requested relief from certain American Society of Mechanical Engineers Boiler and Pressure Vessel Code (ASME Code) requirements at Three Mile Island, Unit 1. Specifically, the licensee has requested to use an alternative ultrasonic examination method in lieu of the radiographic examination required by the ASME Code,Section III, Subarticle NC-5222. Additionally, the licensee requested relief from the required examination to include 100% of the volume of the entire weld.
The Nuclear Regulatory Commission staff has reviewed the information provided in the relief request and has identified the enclosed request for additional information (RAI). This RAI was discussed with Thomas Loomis of your staff on January 8, 2007, and it was agreed that your response would be provided within 30 days from the date of this letter.
Please contact me at 301-415-1447, if you have any questions.
Sincerely,
/RA/
Farideh E. Saba, Project Manager Plant Licensing Branch I-2 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket No. 50-289
Enclosure:
As stated cc w/encl: See next page
ML063480515 OFFICE LPLI-2/PM LPLI-2/LA CPNB/BC LPLI-2/BC NAME FSaba CRaynor TChan HChernoff DATE 01/08/07 01/03/07 01/08/07 1/22/07 Three Mile Island Nuclear Station, Unit 1 cc:
Site Vice President - Three Mile Island Nuclear Director - Licensing and Regulatory Affairs Station, Unit 1 AmerGen Energy Company, LLC AmerGen Energy Company, LLC 200 Exelon Way, KSA 3-E P. O. Box 480 Kennett Square, PA 19348 Middletown, PA 17057 Director Senior Vice President - Nuclear Services Bureau of Radiation Protection AmerGen Energy Company, LLC Pennsylvania Department of 4300 Winfield Road Environmental Protection Warrenville, IL 60555 Rachel Carson State Office Building P.O. Box 8469 Vice President - Operations, Mid-Atlantic Harrisburg, PA 17105-8469 AmerGen Energy Company, LLC 200 Exelon Way, KSA 3-N Plant Manager - Three Mile Island Nuclear Kennett Square, PA 19348 Station, Unit 1 AmerGen Energy Company, LLC Vice President - Licensing and Regulatory P. O. Box 480 Affairs Middletown, PA 17057 AmerGen Energy Company, LLC 4300 Winfield Road Regulatory Assurance Manager - Three Warrenville, IL 60555 Mile Island Nuclear Station, Unit 1 AmerGen Energy Company, LLC Regional Administrator P.O. Box 480 Region I Middletown, PA 17057 U.S. Nuclear Regulatory Commission 475 Allendale Road Ronald Bellamy, Region I King of Prussia, PA 19406 U.S. Nuclear Regulatory Commission 475 Allendale Road Chairman King of Prussia, PA 19406 Board of County Commissioners of Dauphin County Michael A. Schoppman Dauphin County Courthouse Framatome ANP Harrisburg, PA 17120 Suite 705 1911 North Ft. Myer Drive Chairman Rosslyn, VA 22209 Board of Supervisors of Londonderry Township Vice President, General Counsel and R.D. #1, Geyers Church Road Secretary Middletown, PA 17057 AmerGen Energy Company, LLC 2301 Market Street, S23-1 Senior Resident Inspector (TMI-1) Philadelphia, PA 19101 U.S. Nuclear Regulatory Commission P.O. Box 219 Middletown, PA 17057
Three Mile Island Nuclear Station, Unit 1 cc:
Dr. Judith Johnsrud National Energy Committee Sierra Club 433 Orlando Avenue State College, PA 16803 Eric Epstein TMI Alert 4100 Hillsdale Road Harrisburg, PA 17112 Correspondence Control Desk AmerGen Energy Company, LLC P.O. Box 160 Kennett Square, PA 19348 Manager Licensing - Three Mile Island Nuclear Station, Unit 1 Exelon Generation Company, LLC 200 Exelon Way, KSA 3-E Kennett Square, PA 19348 Assistant General Counsel AmerGen Energy Company, LLC 200 Exelon Way Kennett Square, PA 19348
REQUEST FOR ADDITIONAL INFORMATION THREE MILE ISLAND, UNIT 1 RELIEF REQUEST TO UTILIZE ASME CODE CASE N-659 TAC NO. MD3170 DOCKET NO. 50-289
- 1. By letter dated September 28, 2006, AmerGen Energy Company requested to use American Society of Mechanical Engineers Boiler and Pressure Vessel Code (ASME Code) Case N-659, Use of Ultrasonic Examination in Lieu of Radiography for Weld Examination Section III, Division 1". The Nuclear Regulatory Commission (NRC) has reviewed the ASME Code Case N-659 for endorsement as conditionally acceptable in draft Regulatory Guide DG-1134, Inservice Inspection Code Case Acceptability, ASME Section XI, Division 1. Proposed conditions were provided in the Federal Register of October 27, 2006 (Volume 71, Number 208), Pages 62948-62949. In order for the NRC staff to continue its review, please discuss how the proposed NRC conditions will be addressed for Three Mile Island, Unit 1.
- 2. ASME Code Case N-659 states that the examination area shall include 100% of the volume of the entire weld, plus 0.5T of each side of the welds, where T is the thickness of the weld. After reviewing figures 2 and 3 of your submittal, the NRC staff is unclear as to what is the exact weld area that will not be examined. Please provide the following:
a) Please discuss the computer modeling, if any, used to determine the appropriate transducer size and angles for maximum volume coverage. Evaluate if using different shapes can increase the coverage.
b) Please discuss other non-destructive methods (such as, surface examination and/or eddy current) that were considered for improving the volume coverage and can get some depth as well. Explain whether and how the volume coverage can be improved.
