ML102090133
| ML102090133 | |
| Person / Time | |
|---|---|
| Site: | Limerick  |
| Issue date: | 07/27/2010 |
| From: | David Helker Exelon Generation Co, Exelon Nuclear |
| To: | Document Control Desk, Office of Nuclear Reactor Regulation |
| References | |
| Download: ML102090133 (10) | |
Text
PxtIon NuIQIr www.exeloncorp.com wwwxeloncorpcom Exelon Exek,n.,
200 Exelon Way Nuclear
- eiiiett :eUai-e-, PA iCJ4 10 CFR 50.55a 10 July 27, 2010 U.S. Nuclear Regulatory Commission Attn: Document Control Desk Washington, DC 20555-0001 Limerick Generating Station, Units 1 1 and 2 Facility Operating License Nos. NPF-39 and NPF-85 NRC Docket Nos. 50-352 and 50-353
Subject:
Response to Request for Additional Information - Submittal of Relief l3R-14 Concerning Nozzle-to-Vessel Request 13R-14 Nozzle-to-Vessel Weld and Inner Radii Examinations Examinations
References:
- 1) Letter from P. B. Cowan (Exelon Generation Company, LLC) to U.S.
Nuclear Regulatory Commission, Submittal of Relief Request 13R-14 Commission, IISubmittal 13R-14 Nozzle-to-Vessel Weld and Inner Radii Examinations,lI Concerning Nozzle-to-Vessel Examinations, date February 1, 1,2010 2010
- 2) Letter from P. Bamford (U.S. Nuclear Regulatory Commission Commission)) to M.
Limerick Generating Station, Units 1 J. Pacilio (Exelon Nuclear), IlLimerick 1 and 2 - Request for Additional Information Regarding Relief Request 13R-I3R-Nozzle-to-Vessel Weld and Inner Radii Examinations 14, Nozzle-to-Vessel Examinations (TAC NOS.
ME3307), dated June 25, 2010 ME3306 and ME3307),1I In the Reference 11 letter, Exelon Generation Company, LLC (EGC), requested relief from the American Society of Mechanical Engineers (ASME) Boiler and Pressure Vessel (B&PV) Code,Section XI, Xl, IIRules Rules for Inservice lnservice Inspection of Nuclear Power Plant Components.
Components.II Relief Request 13R-14 proposes an alternative to the requirements contained in Table IWB-2500-1 nozzle-to-vessel weld and nozzle inner radii examination requirements.
concerning nozzle-to-vessel requirements.
In the Reference 2 letter, the U.S. Nuclear Regulatory Commission requested additional information. Attached is our response.
Response to Response to Request Requestfor for Additional Additional Information Information -
Submittal of Relief Submittal of Relief Request Request 13R-14 I3R-14 Concerning Concerning Nozzle-to-Vessel Nozzle-to-Ve Weld and ssel Weld and Inner Inner Radii Radii Examination Examinations s July 27,2010 July 27, 2010 Page 22 Page No regulatory No regulatory commitment commitments are contained s are contained inin this this letter.
letter.
Should you Should you have have any any questions questions concerning concerning this this letter, letter, please contact Tom please contact Loomis at Tom Loomis (610) 765-at (610) 765-5510.
5510.
Sincerely, Sincerely, 49%7 P. Helker David P.
David Helker Manager - Licensing Manager Licensing && Regulatory Affairs Exelon Generation Company, Exelon Generation Company, LLC LLC
Attachment:
Response to Request for Additional Information
Attachment:
Information - Relief Request l3R-14
- 13R-14 cc:
cc: USNRC Administratorr USNRC Region I, Regional Administrato USNRC USNRC Senior Resident Inspector, LGS USNRC USNRC Project Manager, LGS R. R. Janati, PA Bureau of Radiation Protection
Attachment Response to Request for Additional Information Relief Request 13R-14
Response to Request for Additional Information Attachment Relief Request 13R-14 l3R-14 Page 11 Request:
- 1. Please expand the synopsis of what inspections have already been performed on the components for which this alternative is requested to include all indications that were found and how these indications were dispositioned. If no indications were found during any inspections, please state so.
Response
Rewonse:
The following tables identify the Recordable Indications (RI) and Non-Recordable Indications (NRI) identified during the inspections. All the indications were evaluated as acceptable per ASME Section XI. Xl.
Table 11 - Unit 11 Nozzle-to-Vessel and Nozzle Inner Radius Ins
- ection Results Inspection Unit 11 J Component N17A
} Outage [Interval 1R04 11 I Period 2
Results NRI Misc.
11 N17A 1R07 2 1 1 NRI 11 N17A-IR 1R04 11 2 NRI 11 N17A-lR N17A-IR 1R07 2 1 1 NRI 11 N17B 1R04 11 2 RI Recordable indications identified-acceptable per ASME Section XI 11 N17B 1R07 2 1 1 NRI 11 N17B 1R12 3 1 1 NRI 11 N17B-lR N17B-IR 1R04 11 2 NRI 11 N17B-IR 1R07 2 1 1 NRI 11 N17B-IR 1R12 3 1 1 NRI 11 N17C 1R04 11 2 RI Recordable indications identified-acceptable per ASME Section Xl XI 11 N17C 1R11 2 3 NRI 11 N17C-IR 1R04 11 2 NRI 11 N17C-lR N17C-IR 1R11 2 3 NRI 11 N17D 1R04 11 2 RI Recordable indications identified-acceptable per ASME Section Xl XI 11 N17D 1R07 2 1 1 NRI 11 N17D-lR N17D-IR 1R04 11 2 NRI 11 N17D-lR N17D-IR 1R07 2 1 1 NRI 11 N2A 1R02 11 1 1 NRI 11 N2A 1R07 2 1 1 NRI 11 N2A 1R12 3 1 1 NRI 11 N2A-IR 1R02 11 1 1 NRI 11 N2A-lR N2A-IR 1R07 2 1 1 NRI 11 N2A-lR N2A-IR 1R12 3 1 1 NRI 11 N2B 1 R02 1R02 11 1 1 RI Recordable indications identified identified-acceptable per ASME Section XI 11 N2B 1 R09 1R09 2 2 RI Recordable indications identified identified-acceptable per ASME Section Xl XI 11 N2B-lR N2B-IR 1R02 11 1 1 NRI
Response to Response to Request Request for for Additional Additional Information Information Attachment Relief Request Relief Request 13R*14 13R-14 Page Page 2 Unit Component Outage Interval Penod Results Misc 1 N2B-IR 1R09 2 2 NRI 1 N2C 1R02 1 1 RI Recordable Recordable indications indications identified-acceptable Section XI acceptable per ASME Section 1 N2C N2C 1 R09 1R09 22 22 RI RI Recordable Recordable indications identified-acceptable acceptable per per ASME Section XI 1 N2C-IR 1R02 1R02 11 11 NRI NRI 1 N2C-lR 1R09 1R09 22 22 NRI NRI 1 N2D 1R02 1R02 11 11 RI RI Recordable indications identified-acceptable per ASME Section XI 1 N2D 1R07 1R07 2 11 NRI 1 N2D-IR 1R02 1R02 11 11 NRI NRI 1 N2D-lR 1R07 1R07 2 11 NRI 11 N2E 1R02 1R02 11 11 RI Recordable indications identified-acceptable per ASME Section XI Xl 11 N2E N2E 1R09 1R09 2 2 NRI 11 N2E-lR N2E-IR 1R02 1R02 11 11 NRI 11 N2E-lR N2E-IR 1R09 2 2 NRI 11 N2F N2F 1 R02 1R02 11 11 RI Recordable indications identified-acceptable per ASME Section XI 11 N2F 1R07 2 11 NRI 11 N2F 1R12 3 11 NRI 11 N2F-lR N2F-IR 1R02 11 11 NRI 11 N2F-IR 1R07 2 11 NRI 11 N2F-IR 1R12 3 11 NRI 11 N2G 1R02 11 11 RI Recordable indications identified-acceptable per ASME Section XI 11 N2G 1R07 2 1 1 NRI 11 N2G 1R11 2 3 NRI 11 N2G-IR 1R02 11 11 NRI 1
1 N2G-IR 1R07 2 1 1 NRI 1
1 N2G-IR 1R11 2 3 NRI 11 N2H 1 R02 1R02 1 1 11 RI Recordable indications indications identified-identified-acceptable acceptable per per ASME ASME Section XI 1
1 N2H 1R07 22 11 NRI NRI 1
1 N2H 1R11 2 3 NRI 1
1 N2H-IR 1R02 1R02 11 11 NRI NRI 1
1 N2H-lR N2H-IR 1R07 1R07 22 11 NRI NRI 1
1 N2H-lR N2H-IR 1R11 22 3 NRI NRI 1
1 N2J 1R02 1R02 11 11 RI Recordable Recordable indications indications identified identified-acceptable acceptable per per ASME ASME Section Section XIXI 1
1 N2J 1R1O 1R10 22 33 NRI NRI 11 N2J-lR N2J-IR 1R02 1R02 11 11 NRI NRI 11 N2J-lR N2J-IR 1R1O 1R10 22 33 NRI NRI
Response to Response to Request for Additional Request for Additional Information Information Attachment Relief Request Relief Request 13R-14 13R-14 Page Page 3 Unit Component Outage Interval Period Results Misc.
1 N2K N2K 1R02 1 R02 11 11 RI RI Recordable Recordable indications indications identified-identif led-acceptable per ASME Section XI acceptable per Xl 11 N2K N2K 1R10 1R1O 22 33 NRI NRI 11 N2K-IR N2K-IR 1R02 1R02 11 11 NRI NRI 11 N2K-IR N2K-IR 1R10 1R10 22 33 NRI NRI 11 N3A N3A 1R06 1R06 11 33 NRI NRI 11 N3A N3A 1R09 1R09 22 2 RI RI Recordable Recordable indications identified-acceptable per ASME Section XI Xl 11 N3A-IR N3A-IR 1R06 1R06 11 3 NRI 1 N3A-lR N3A-IR 1R09 1R09 2 2 NRI 11 N3B N3B 1R06 1R06 11 33 NRt NRI 11 N3B N3B 1R09 1R09 2 2 NRt NRI 11 N3B-lR N3B-tR 1R06 1R06 11 3 NRt NRI 11 N3B-lR N3B-tR 1R09 1R09 2 2 NRI 11 N3C N3C 1R06 1R06 11 3 NRt NRI 11 N3C N3C 1R07 R07 2 11 NRt NRI 11 N3C-lR N3C-tR 1R06 1R06 11 3 NRt NRI 11 N3C-lR N3C-tR 1R07 1R07 2 11 NRt NRI 11 N3D 1R06 11 3 NRI 11 N3D 1R07 2 11 NRt NRI 11 N3D 1R12 3 11 NRt NRI 11 N3D-lR N3D-IR 1R06 11 3 NRI 11 N3D-IR 1R07 2 11 NRI NRt 11 N3D-lR N3D-tR 1R12 3 11 NRI NRt 11 N5A 1R04 11 2 NRI NRt 11 N5A 1R07 2 1 1 NRI 11 N5A 1R12 3 1 1 NRI NRt 11 N5A-IR N5A-tR 1R04 11 2 NRI NRt 11 N5A-IR N5A-tR 1R07 2 1 1 NRI 11 N5A-lR N5A-tR 1R12 3 1 1 NRI 11 N5B 1R04 1 1 2 RI Recordable indications indications identified-identified-acceptable acceptable per per ASME Section Section XI XI 1 1 N5B 1R07 1R07 22 11 NRI NRI 11 N5B 1R12 33 11 NRI NRt 1 1 N5B-IR N5B-tR 1R04 1 1 22 NRI NRt 11 N5B-lR N5B-IR 1R07 1R07 22 11 NRI NRt 1
1 N5B-IR 1R12 3 11 NRI NRI 1 1 N6A 1R05 1R05 11 33 NRI NRt 11 N6A 1R1O 1R10 22 33 NRI NRI 11 N6A-lR N6A-IR 1R05 1R05 11 33 NRI NRt 11 N6A-IR N6A-IR 1R1O 1R10 22 33 NRI NRt 11 N6B N6B 1R04 1R04 11 22 NRI NRI 11 N6B N6B 1R1O 1R10 22 33 NRI NRt 11 N6B-IR N6B-IR 1R04 1R04 11 22 NRI NRI
Response to Response to Request Request for for Additional Additional Information Information Attachment Relief Request Relief 13R-14 Request 13R-14 Page Page 4 Unit Component Outage Interval Period Results Misc.
1 N6B-IR 1R1O 2 3 NRI 1 N7 1 R05 1 3 RI Recordable Recordable indications indications identified-acceptable acceptable per per ASME Section XI 1 N7 1R1O 22 33 NRI NRI 1 N7-IR 1R05 1R05 1 33 NRI NRI 1 N7-IR N7-IR 1R1O 1R10 22 33 Rl NRI 1 N8A N8A 1R04 1R04 1 2 NRI NRI 1 N8A N8A 1R07 1R07 22 1 NRI NRI 1 N8A-IR N8A-IR 1R04 1R04 1 2 NRI 1 N8A-lR N8A-IR 1R07 1R07 22 1 NRI 1 N8B N8B 1R04 1R04 11 2 NRI 1 N8B N8B 1R07 1R07 2 1 NRI 1 N8B-IR N8B-IR 1R04 1R04 1 2 NRI 1 N8B-IR N8B-IR 1R07 1R07 2 11 NRI TaLe 2 - Unit 2 Nozzle-to-Vessel Table - Noze-to-Vessel and Nozzle Inner Radius Ins Inspection Results Unit Component Outage Interval Period Results Misc.
2 N17A 2R03 11 2 RI Recordable indications identified-identified acce table per acceptable er ASME Section Xl XI 2 N17A 2R08 2 2 NRI 2 N17A-IR 2R03 1 1 2 NRI 2 N17A-IR 2R08 2 2 NRI 2 N17B 2R04 1 1 3 NRI 2 N178 N17B 2R10 3 1 1 NRI 2 N17B-IR 2R04 1 1 3 NRI 2 N17B-IR 2R10 3 1 1 NRI 2 N17C 2R02 1 1 11 NRI 2 N17C 2R07 2 11 NRI 2 N17C-IR 2R02 1 1 1 1 NRI 2 N17C-lR N17C-IR 2R07 2 11 NRI 2 N17D 2R04 1 1 33 NRI 2 N17D 2R09 33 11 NRI NRI 2 N17D-IR 2R04 11 33 NRI 2 N17D-IR 2R09 3 11 NRI 2 N2A 2R02 11 11 RI Recordable Recordable indications indications identified identified-acceptable acce table perer ASME ASME Section Section XlXI 2 N2A 2R10 33 11 NRI NRI 2 N2A-IR 2R02 11 11 NRI NRI 22 N2A-IR 2R10 2R10 33 11 NRI NRI 22 N2B 2R02 2R02 11 11 RI RI Recordable Recordable indications indications identified identified-acceptable acce table perer ASME ASME Section Section XIXI 22 N2B N2B 2R07 2R07 22 11 NRI NRI 22 N2B-IR N2B-IR 2R02 11 11 NRI NRI
Response to Response Request for to Request for Additional Additional Information Information Attachment Relief Request Relief Request 13R-14 13R-14 PageS Page 5 Unit Component Outage Interval Period Results Misc.
2 N2B-lR 2R07 2 1 NRI 2 N2C 2R02 1 1 RI Recordable Recordable indications indications identified-identified acce table per acceptable er ASME Section Section XIXl 22 N2C N2C 2R07 2R07 22 1 RI RI Recordable Recordable indications indications identified-identified acce er ASME Section XI table per acceptable Xl 22 N2C-IR N2C-IR 2R02 2A02 11 11 NRI NRI 22 N2C-lR N2C-IR 2R07 2R07 2 11 NRI NRI 22 N2D N2D 2R02 2A02 11 11 RI Recordable Recordable indications identified-acceptable per ASME Section XI Xl 22 N2D N2D 2R10 2R10 3 11 NRI NRI 22 N2D-lR N2D-IA 2R02 2A02 11 11 NAI NRI 22 N2D-lR N2D-IR 2R10 2R10 33 11 NRI 22 N2E N2E 2R02 11 11 RI Recordable indications identified-acce table per acceptable er ASME Section XI Xl 22 N2E N2E 2R07 2 11 NRI 22 N2E-lR N2E-IR 2R02 11 11 NRI 22 N2E-lR N2E-IR 2R07 2 11 NRI 2 N2F N2F 2R02 11 11 RI Recordable indications identified-acce table per acceptable er ASME Section XI Xl 2 N2F 2R07 2 11 NRI 2 N2F-IR 2R02 2A02 11 11 NRI 2 N2F-IR 2R07 2A07 2 11 NRI 2 N2G 2R02 2A02 11 11 RI AI Recordable indications identified-acceptable acce table per er ASME Section Xl XI 2 N2G 2R07 2A07 2 11 NRI 2 N2G-IR 2R02 11 1 1 NRI 2 N2G-lR N2G-IR 2R07 2A07 2 1 1 NRI 2 N2H 2R02 11 1 1 RI Recordable indications identified-acceptable acce table per er ASME ASME Section Xl XI 2 N2H 2R09 3 1 1 NRI 2 N2H-IRR 2R02 1 1 1 1 NRI 2 N2H-lR N2H-IR 2R09 3 11 NRI 2 N2J 2R02 1 1 1 1 RI Recordable indications identified-identified-acceptable acce table per er ASME Section Xl XI 2 N2J 2R09 3 11 NRI 2 N2J-IR 2R02 11 11 NRI NAI 2 N2J-lR N2J-IR 2R09 2A09 3 11 NRI 2 N2K 2R02 2A02 11 11 NRI NRI 22 N2K 2R10 33 11 NRI NRI 2 N2K-IR 2R02 11 11 NRI NRI 2 N2K-lR N2K-IR 2R10 33 11 NRI NRI 22 N3A 2R03 2R03 11 22 NRI NRI 22 N3A 2R07 2R07 22 11 NRI NRI 22 N3A-IR N3A-IR 2R03 2R03 11 22 NRI NRI 22 N3A-IR N3A-IA 2R07 22 11 NRI NRI
Response to Response to Request Request for for Additional Additional Information Information Attachment Relief Request Relief Request 13R-14 13R-14 Page Page 6 Unit Component Outage Interval Period Results Misc.
2 N3B 2R03 1 2 RI ecordable indications Recordable indications identified-identif led-table per acceptable er ASME Section XI Xl 22 N3B N3B 2R07 2R07 22 11 RI RI Recordable Recordable indications identified-acce table per acceptable er ASME Section XI Xl 22 N3B-IR N3B-IR 2R03 2R03 11 22 NRI NRI 22 N3B-IR N3B-IR 2R07 2R07 22 11 NRI NRI 22 N3C N3C 2R04 2R04 11 33 NRI NRI 22 N3C N3C 2R09 2R09 33 11 NRI NRI 22 N3C-IR N3C-IR 2R04 2R04 11 33 NRI NRI 22 N3C-IR N3C-IR 2R09 2R09 33 11 NRI 22 N3D N3D 2R04 2R04 11 3 NRI 22 N3D N3D 2R09 2R09 3 11 NRI 22 N3D-IR N3D-IR 2R04 11 3 NRI 22 N3D-IR N3D-IR 2R09 3 11 NRI 22 N5A N5A 2R03 11 2 RI Recordable indications identified-acce table per acceptable er ASME Section XI 2 N5A N5A 2R08 2 2 NRI 2 N5A-IR N5A-IR 2R03 11 2 NRI 2 N5A-IR N5A-IR 2R08 2 2 NRI 2 N58 N5B 2R03 11 2 RI Recordable indications identified-acce table per acceptable er ASME Section Xl XI 2 N5B 2R09 3 11 NRI 2 N5B-IR 2R03 11 2 NRI 2 N5B-IR 2R09 3 1 1 NRI 2 N6A 2R05 1 1 3 NRI 2 N6A 2R08 2 2 NRI 2 N6A-lR N6A-IR 2R05 11 3 NRI 2 N6A-lR N6A-IR 2R08 2 2 NRI 2 N6B 2R03 1 1 2 NRI 2 N6B 2R08 22 2 NRI 2 N6B-IR 2R03 1 1 22 NRI 2 N6B-lR N6B-IR 2R08 2 22 NRI 2 N7 2R05 11 33 NRI 2 N7 2R08 22 2 NRI NRI 2 N7-lR N7-IR 2R05 11 33 NRI NRI 2 N7-IR 2R08 2 22 NRI 2 N8A 2R03 11 22 NRI NRI 2 N8A 2R10 2R10 33 11 NRI 2 N8A-IR 2R03 11 22 NRI NRI 22 N8A-IR 2R10 33 11 NRI NRI 2 N8B 2R03 11 22 NRI NRI 22 N8B N8B 2R10 33 11 NRI NRI 22 N8B-IR N8B-IR 2R03 2R03 11 22 NRI NRI 22 N8B-IR N8B-IR 2R10 2R10 33 11 NRI NRI
Response to Response to Request Request for for Additional Additional Information Information Attachment Attachment Relief Request Relief Request 13R-14 13R-14 Page Page 77 Reciuest:
Request:
- 2. Please confirm
- 2. Please confirm that that the single set the single of values set of values (e.g.,
(e.g., nozzle nozzle radii, radii, nozzle nozzle thicknesses, etc.) used in Enclosure in Enclosure 22 to l3R-14, "Plant to 13R-14, Plant Specific Specific Applicability,"
Applicability, are are correct correct and applicable to both LGS Units 11 and LGS Units and 2. The staff
- 2. The staff notes notes that that some some ofof these these values would be expected to be unit, or nozzle-specific.
or nozzle-specific.
Response
Response:
The single set The single of values set of values (e.g., nozzle radii, (e.g., nozzle radii, nozzle nozzle thicknesses, etc.) used in Enclosure 2 to 13R-14, "Plant 14, Plant Specific Specific Applicability,"
Applicability, are are correct correct and applicable to both LGS, Units 11 and 2. These values are values are minimum minimum design values.