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| | number = ML13231A116 | | | number = ML13231A116 |
| | issue date = 08/27/2013 | | | issue date = 08/27/2013 |
| | title = Surry Power Station, Unit Nos 1 and 2 - Relief from the Requirements of the ASME Code (TAC Nos. MF1805 and MF1806) | | | title = Relief from the Requirements of the ASME Code (TAC Nos. MF1805 and MF1806) |
| | author name = Pascarelli R J | | | author name = Pascarelli R |
| | author affiliation = NRC/NRR/DORL/LPLII-1 | | | author affiliation = NRC/NRR/DORL/LPLII-1 |
| | addressee name = Heacock D A | | | addressee name = Heacock D |
| | addressee affiliation = Virginia Electric & Power Co (VEPCO) | | | addressee affiliation = Virginia Electric & Power Co (VEPCO) |
| | docket = 05000280, 05000281 | | | docket = 05000280, 05000281 |
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| | page count = 7 | | | page count = 7 |
| | project = TAC:MF1805, TAC:MF1806 | | | project = TAC:MF1805, TAC:MF1806 |
| | | stage = Approval |
| }} | | }} |
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| =Text= | | =Text= |
| {{#Wiki_filter:UNITED NUCLEAR REGULATORY WASHINGTON, D.C. 20555-0001 August 27,2013 Mr. David President and Chief Nuclear Officer Virginia Electric and Power Company Innsbrook Technical Center SOOO Dominion Blvd. Glenn Allen, VA 23060 SUB..SURRY POWER STATION, UNIT NOS 1 AND 2 -RELIEF FROM THE REQUIREMENTS OF THE ASME CODE (TAC NOS. MF180S AND MF1806) | | {{#Wiki_filter:UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D.C. 20555-0001 August 27,2013 Mr. David A. Heacock President and Chief Nuclear Officer Virginia Electric and Power Company Innsbrook Technical Center SOOO Dominion Blvd. |
| | Glenn Allen, VA 23060 SUB..IECT: SURRY POWER STATION, UNIT NOS 1 AND 2 - RELIEF FROM THE REQUIREMENTS OF THE ASME CODE (TAC NOS. MF180S AND MF1806) |
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| ==Dear Mr. Heacock:== | | ==Dear Mr. Heacock:== |
| By letter dated May 1, 2013, with supplement dated June 24, 2013, Virginia Electric and Power Company (Dominion) submitted for Nuclear Regulatory Commission (NRC) review and approval a request to use a subsequent edition and addenda of the American Society of Mechanical Engineers Boiler and Pressure Vessel Code (ASME Code), Section XI, for the inservice inspection (lSI) of Examination Categories B-L-1 and C-B components in the fourth ten-year lSI interval at Surry Power Station, Units 1 and 2. Specifically, pursuant to Title 10 of the Code of Federal Regulations (10 CFR) 10 CFR SO.SSa(g)(4)(iv), the licensee requested to use later code editions and addenda for in-service testing items subject to the limitations and modifications listed in 10 CFR SO.SSa(b). The NRC staff determines that the use of the 2007 Edition with 2008 Addenda of the ASME Code, Section XI for the affected components acceptable because Dominion has satisfied the criteria in 10 CFR SO.SSa(g)(4)(iv). Accordingly, the NRC staff concludes that Dominion has adequately addressed all of the regulatory requirements set forth in 10 CFR SO.SSa(g)(4}(iv) and is in compliance with the requirements of the ASME Code, Section XI. Therefore, the NRC staff approves the use of the 2007 Edition with the 2008 Addenda of the ASME Code, Section XI, for the lSI of reactor coolant pump casing welds and for paragraph IWC-3S11 for the lSI of the reinforcing plate welds to nozzles and vessel(s) of the residual heat removal heat exchanger (Examination Category C-B, Item number C2.31) for the remainder of the fourth 10-year lSI interval at Unit 1, which is scheduled to end December 13, 2013 (after the fall 2013 refueling outage), and at Unit 2, which is scheduled to end May 9,2014 If you have any questions, please contact the Project Manager, Karen Cotton at 301-415-1438 or via e-mail at karen.cotton@nrc.gov.
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| Sincerely,Robert Pascarelli, Chief Plant Licensing Branch 11-1 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket Nos: 50-280 and Safety cc w/encl: Distribution via ListServ UNITED NUCLEAR REGULATORY WASHINGTON, D.C. 20555-0001 SAFETY EVALUATION BY THE OFFICE OF NUCLEAR REACTOR REGULATION REQUEST TO USE SUBSEQUENT EDITION OF ASME CODE VIRGINIA ELECTRIC AND POWER COMPANY SURRY POWER STATION UNITS 1 AND 2 DOCKET NUMBER 50-280 AND 50-281 1.0 INTRODUCTION By letter dated May 1 , 2013 (Agencywide Documents and Access Management System (ADAMS) Accession No. ML 13136A 134), with supplement dated June 24, 2013 (ADAMS Accession No. ML 13182A080), Virginia Electric and Power Company (Dominion) submitted for Nuclear Regulatory Commission (NRC) review and approval a request to use a subsequent edition and addenda of the American Society of Mechanical Engineers Boiler and Pressure Vessel Code (ASME Code), Section XI, for the inservice inspection (lSI) of Examination Categories B-L-1 and C-B components in the fourth ten-year lSI interval at Surry Power Station, Units 1 and 2. Specifically, pursuant to Title 10 of the Code of Federal Regulations (10 CFR) 50.55a(g)(4)(iv), Dominion requested to use the 2007 Edition with the 2008 Addenda of the ASME Code, Section XI, for the lSI of reactor coolant pump (RCP) casing welds and reinforcement plate welds to nozzles and vessel(s) of the residual heat removal (RHR) heat exchanger. 2.0 REGULATORY EVALUATION Pursuant to 10 CFR 50.55a(g)(4), ASME Code Class 1,2 and 3 components (including supports) shall meet the requirements, except the design and access provisions and the service examination requirements, set forth in the ASME Code, Section XI, "Rules for Inservice Inspection of Nuclear Power Plant Components," to the extent practical within the limitations of design, geometry, and materials of construction of the components. Section 10 CFR 50.55a(g)(4)(ii) requires that lSI examinations of components and system pressure tests conducted during successive 120 month inspection intervals must comply with the requirements in the latest edition and addenda of Section XI of ASME Code incorporated by reference in 10 CFR 50.55a(b) 12 months prior to the start of the 120-month interval, subject to the conditions listed therein. Section 10 CFR 50.55a(g)(4)(iv) states that inservice examination of components and system pressure tests may meet the requirements set forth in subsequent editions and addenda of the ASME Code provided that they are incorporated by reference in 10 CFR 50.55a(b), subject to the conditions listed in 10 CFR 50.55a(b), and subject to Commission approval. Portions of editions or addenda may be used provided that all related requirements of the respective Enclosure
| | By letter dated May 1, 2013, with supplement dated June 24, 2013, Virginia Electric and Power Company (Dominion) submitted for Nuclear Regulatory Commission (NRC) review and approval a request to use a subsequent edition and addenda of the American Society of Mechanical Engineers Boiler and Pressure Vessel Code (ASME Code), Section XI, for the inservice inspection (lSI) of Examination Categories B-L-1 and C-B components in the fourth ten-year lSI interval at Surry Power Station, Units 1 and 2. |
| -2 editions or addenda are met. Currently, Section 10 CFR 50.55a(b)(2) incorporates by reference the ASME Code Section XI from the 1970 Edition through the 1976 Winter Addenda, and the 1977 Edition through the 2007 Edition with the 2008 Addenda. Based on the above analysis, the NRC staff finds that it has the regulatory authority to authorize the use of a subsequent edition and addenda of the ASME Code, as requested by Dominion. 3.0 DOMINION'S REQUEST The code of record for the current fourth 10-year lSI interval at Surry, Units 1 and 2, is the 1998 Edition with the 2000 Addenda of the ASME Code, Section XI. Dominion proposed to use the 2007 Edition with the 2008 Addenda of the ASME Code, Section XI, for the lSI of RCP casing welds (Examination Category B-L-1) and for Paragraph IWC-3511 in its entirety and with all associated references for the lSI of the reinforcing plate welds to nozzles and vessel(s) of the RHR heat exchanger (Examination Category CoB, Item Number C2.31) in the fourth 10-year lSI interval for Surry, Units 1 and 2. Dominion stated that ASME removed Examination Category B-L-1 welds from the ASME Code Section XI, 2007 Edition with 2008 Addenda because industry operating experience has not identified any failures in RCP casings. According to Dominion, examining the RCP casing welds results in unnecessary radiation exposure for non-destructive examination personnel. Dominion further stated that flaw acceptance standards for Class 2 austenitic pressure retaining welds of nozzles in vessels (Examination Category CoB, Item number C2.31) exists in IWC-3511, "Standards for Examination Category CoB, Pressure Retaining Welds of Nozzles In Vessels," of the 2007 Edition with the 2008 Addenda, by referring to Table IWB-3514.2. Dominion noted that the current code of record does not contain the flaw acceptance criteria for Examination Category CoB components (e.g., RHR heat exchanger welds). Dominion proposed that the request be applicable for the remainder of the fourth 10-year lSI interval for Unit 1, which is scheduled to end on December 13, 2013 (after the fall 2013 refueling outage), and for Unit 2, which is scheduled to end on May 9,2014. 4.0 NRC STAFF EVALUATION The NRC staff evaluated Dominion's request using the criteria contained in 10 CFR 50.55a(g)(4)(iv), which states that inservice examination of components and system pressure tests may meet the requirements set forth in subsequent editions and addenda of the ASME Code provided certain criteria are satisfied. The first criterion is that the edition and addenda of the ASME Code, Section XI that will be used in the proposed request is incorporated by reference in 10 CFR 50.55a(b). Currently, the latest edition and addenda incorporated by reference in Section 10 CFR 50.55a(b)(2) is the 2007 Edition with the 2008 Addenda, which Dominion proposed to use for the two affected components. Therefore, the NRC finds that Dominion has satisfied the first criterion. The second criterion is that the conditions listed in 10 CFR 50.55a(b) are satisfied for the specific use of the proposed subsequent edition and addenda of the ASME Code, Section XI.
| | Specifically, pursuant to Title 10 of the Code of Federal Regulations (10 CFR) 10 CFR SO.SSa(g)(4)(iv), the licensee requested to use later code editions and addenda for in-service testing items subject to the limitations and modifications listed in 10 CFR SO.SSa(b). |
| | The NRC staff determines that the use of the 2007 Edition with 2008 Addenda of the ASME Code, Section XI for the affected components acceptable because Dominion has satisfied the criteria in 10 CFR SO.SSa(g)(4)(iv). Accordingly, the NRC staff concludes that Dominion has adequately addressed all of the regulatory requirements set forth in 10 CFR SO.SSa(g)(4}(iv) and is in compliance with the requirements of the ASME Code, Section XI. Therefore, the NRC staff approves the use of the 2007 Edition with the 2008 Addenda of the ASME Code, Section XI, for the lSI of reactor coolant pump casing welds and for paragraph IWC-3S11 for the lSI of the reinforcing plate welds to nozzles and vessel(s) of the residual heat removal heat exchanger (Examination Category C-B, Item number C2.31) for the remainder of the fourth 10-year lSI interval at Unit 1, which is scheduled to end December 13, 2013 (after the fall 2013 refueling outage), and at Unit 2, which is scheduled to end May 9,2014 |
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| -The NRC staff noted that 10 CFR 50.55a(b) sets no conditions on Examination Categories B-L-1 and CoB of the 2007 Edition with the 2008 Addenda of the ASME Code, Section XI. Therefore, the NRC staff finds that Dominion has satisfied the second criterion. The third criterion is that if portions of subsequent editions or addenda of the ASME Code, Section XI are used, all related requirements of the respective editions or addenda must be met. The NRC staff evaluated Dominion's Request with respect to the third criterion as follows: The NRC staff noted that Table IWB-2500-1 of the 1998 Edition to the 2007 Edition of the ASME Code, Section XI, provides examination requirements for Examination Category B-L-1, Item B12.1 0, such as RCP casing welds. However, starting in the 2008 Addenda, Table IWB-2500-1 no longer includes Examination Category B-L-1 components and any associated examination requirements. The NRC staff confirmed that the Examination Category B-L-1 components have been removed from Table IWB-2500-1 of the 2008 Addenda. Dominion stated that the removal was because the industry experience has not identified any failures in RCP casings and that performing visual examinations of the RCP casing welds will expose personnel to unnecessary radiological dose. The NRC staff noted that although the RCP pump casing welds are not required to be examined by Table IWB-2500-1 of the 2008 addenda, the internal surface of the RCP pump casing (Examination Category B-L-2) is required to be examined visually. The NRC staff believes that the examiner will most likely notice any flaws on the surface of the RCP casing welds while the casing is being inspected. In addition, the pump casing welds are made of austenitic stainless steel which is less susceptible to stress corrosion cracking than other weld filler material. The NRC has approved the use of the 2008 Addenda of the Code; therefore, the NRC staff finds that Dominion's request of using 2008 Addenda for lSI of the RCP casing welds is acceptable. The NRC staff noted that the current code of record (the 1998 Edition with the 2000 Addenda) does not contain the acceptance criteria for the Examination Category CoB, Item number C2.31 components (e.g., the reinforcing plate welds to nozzles and vessel(s) of the RHR heat exchanger). The NRC staff confirmed that the 2007 Edition contains the acceptance criteria for the Examination Category CoB components because paragraph IWC-3511.1 (b) of IWC-3511, "Standards for Examination Category CoB. Pressure Retaining Welds of Nozzles in Vessels," states that " ... For austenitic steels, the standards are in the course of preparation; the acceptance standards of Table IWB-3514-2 may be used ... " The NRC staff finds that by adopting the 2007 Edition of the ASME Code, Section XI, Dominion will be able to use the acceptance standards of Table IWB-3514-2 to disposition the inspection results of the reinforcement plate welds to the nozzles and vessel(s) of the RHR heat exchanger. In addition, Dominion stated that it will use the 2007 edition with the 2008 addenda for the examination of RCP casing welds (Examination Category B-L-1) and for paragraph IWC-3511 in its entirety and with all associated references with respect to the examination of the reinforcing plate welds to nozzles and vessel(s) of the RHR heat exchanger (Examination Category CoB, Item number C2.31). Therefore. the NRC staff finds the adoption of the 2007 Edition with the 2008 Addenda for the lSI of the reinforcing plate welds to the nozzles and vessel(s) of the RHR heat exchanger is acceptable. The NRC staff determines that Dominion has identified all related requirements of 2007 Edition with 2008 Addenda of the ASME Code, Section XI for the lSI of the RCP casing welds and
| | D. Heacock - 2 If you have any questions, please contact the Project Manager, Karen Cotton at 301-415-1438 or via e-mail at karen.cotton@nrc.gov. |
| -4 reinforcing plate welds to the nozzles and vessel(s) of the RHR heat exchanger and plans to satisfy those requirements. Therefore, the NRC staff finds that Dominion has satisfied the third criterion. Based on the above, the NRC staff finds that Dominion has satisfied the three criteria of 10 CFR SO.SSa(g)(4)(iv) in its request to use the 2007 Edition with 2008 Addenda of the ASME Code Section XI for the lSI of the RCP casing welds and the reinforcing plate welds to nozzles and vessel(s) of the RHR heat exchanger. S.O CONCLUSION As set forth above, the NRC staff determines that the use of the 2007 Edition with 2008 Addenda of the ASME Code, Section XI for the affected components acceptable because Dominion has satisfied the criteria in 10 CFR SO.SSa(g)(4)(iv). Accordingly, the NRC staff concludes that Dominion has adequately addressed all of the regulatory requirements set forth in 10 CFR SO.SSa(g)(4)(iv) and is in compliance with the requirements of the ASME Code, Section XI. Therefore, the NRC staff approves the use of the 2007 Edition with the 2008 Addenda of the ASME Code, Section XI, for the lSI of RCP casing welds and for paragraph IWC-3S11 for the lSI of the reinforcing plate welds to nozzles and vessel(s} of the RHR heat exchanger (Examination Category C-B, Item number C2.31) for the remainder of the fourth 10-year lSI interval at Unit 1, which is scheduled to end December 13, 2013 (after the fall 2013 refueling outage), and at Unit 2, which is scheduled to end May 9,2014. Principal Contributor: John Tsao Date: August 27, 2013 If you have any questions, please contact the Project Manager, Karen Cotton at 301-415-1438 or via e-mail at karen.cotton@nrc.gov.
| | Sincerely, Robert Pascarelli, Chief Plant Licensing Branch 11-1 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket Nos: 50-280 and 50-281 |
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| Sincerely,IRA! Robert Pascarelli, Chief Plant Licensing Branch 11-1 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket Nos: 50-280 and Safety cc w/encl: Distribution via LPL2-1 Reading RidsNrrDorlDpr RidsNrrDorlLp2-1 RidsNrrDeEpnb RidsAcrsAcnw_MailCTR RidsNrrLASFigueroa RidsNrrPMSurry RidsRgn2MailCenter ADAMS Accession No.: ML13231A116 RULPL2-1/PM RRiDORULPL2-1/LA NRRI DE/EPNB KCotton Figueroa TLupold/ 08/22113 08/21/13 07/29/2013 OFFICIAL RECORD NRRIDORULPL2 RPascarelli 08/27/13}}
| | ==Enclosure:== |
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| | Safety Evaluation cc w/encl: Distribution via ListServ |
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| | UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D.C. 20555-0001 SAFETY EVALUATION BY THE OFFICE OF NUCLEAR REACTOR REGULATION REQUEST TO USE SUBSEQUENT EDITION OF ASME CODE VIRGINIA ELECTRIC AND POWER COMPANY SURRY POWER STATION UNITS 1 AND 2 DOCKET NUMBER 50-280 AND 50-281 |
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| | ==1.0 INTRODUCTION== |
| | |
| | By letter dated May 1, 2013 (Agencywide Documents and Access Management System (ADAMS) Accession No. ML13136A134), with supplement dated June 24, 2013 (ADAMS Accession No. ML13182A080), Virginia Electric and Power Company (Dominion) submitted for Nuclear Regulatory Commission (NRC) review and approval a request to use a subsequent edition and addenda of the American Society of Mechanical Engineers Boiler and Pressure Vessel Code (ASME Code), Section XI, for the inservice inspection (lSI) of Examination Categories B-L-1 and C-B components in the fourth ten-year lSI interval at Surry Power Station, Units 1 and 2. |
| | Specifically, pursuant to Title 10 of the Code of Federal Regulations (10 CFR) 50.55a(g)(4)(iv), |
| | Dominion requested to use the 2007 Edition with the 2008 Addenda of the ASME Code, Section XI, for the lSI of reactor coolant pump (RCP) casing welds and reinforcement plate welds to nozzles and vessel(s) of the residual heat removal (RHR) heat exchanger. |
| | |
| | ==2.0 REGULATORY EVALUATION== |
| | |
| | Pursuant to 10 CFR 50.55a(g)(4), ASME Code Class 1,2 and 3 components (including supports) shall meet the requirements, except the design and access provisions and the pre service examination requirements, set forth in the ASME Code, Section XI, "Rules for Inservice Inspection of Nuclear Power Plant Components," to the extent practical within the limitations of design, geometry, and materials of construction of the components. Section 10 CFR 50.55a(g)(4)(ii) requires that lSI examinations of components and system pressure tests conducted during successive 120 month inspection intervals must comply with the requirements in the latest edition and addenda of Section XI of ASME Code incorporated by reference in 10 CFR 50.55a(b) 12 months prior to the start of the 120-month interval, subject to the conditions listed therein. |
| | Section 10 CFR 50.55a(g)(4)(iv) states that inservice examination of components and system pressure tests may meet the requirements set forth in subsequent editions and addenda of the ASME Code provided that they are incorporated by reference in 10 CFR 50.55a(b), subject to the conditions listed in 10 CFR 50.55a(b), and subject to Commission approval. Portions of editions or addenda may be used provided that all related requirements of the respective Enclosure |
| | |
| | -2 editions or addenda are met. Currently, Section 10 CFR 50.55a(b)(2) incorporates by reference the ASME Code Section XI from the 1970 Edition through the 1976 Winter Addenda, and the 1977 Edition through the 2007 Edition with the 2008 Addenda. |
| | Based on the above analysis, the NRC staff finds that it has the regulatory authority to authorize the use of a subsequent edition and addenda of the ASME Code, as requested by Dominion. |
| | 3.0 DOMINION'S REQUEST The code of record for the current fourth 10-year lSI interval at Surry, Units 1 and 2, is the 1998 Edition with the 2000 Addenda of the ASME Code, Section XI. Dominion proposed to use the 2007 Edition with the 2008 Addenda of the ASME Code, Section XI, for the lSI of RCP casing welds (Examination Category B-L-1) and for Paragraph IWC-3511 in its entirety and with all associated references for the lSI of the reinforcing plate welds to nozzles and vessel(s) of the RHR heat exchanger (Examination Category CoB, Item Number C2.31) in the fourth 10-year lSI interval for Surry, Units 1 and 2. |
| | Dominion stated that ASME removed Examination Category B-L-1 welds from the ASME Code Section XI, 2007 Edition with 2008 Addenda because industry operating experience has not identified any failures in RCP casings. According to Dominion, examining the RCP casing welds results in unnecessary radiation exposure for non-destructive examination personnel. |
| | Dominion further stated that flaw acceptance standards for Class 2 austenitic pressure retaining welds of nozzles in vessels (Examination Category CoB, Item number C2.31) exists in IWC-3511, "Standards for Examination Category CoB, Pressure Retaining Welds of Nozzles In Vessels," of the 2007 Edition with the 2008 Addenda, by referring to Table IWB-3514.2. |
| | Dominion noted that the current code of record does not contain the flaw acceptance criteria for Examination Category CoB components (e.g., RHR heat exchanger welds). |
| | Dominion proposed that the request be applicable for the remainder of the fourth 10-year lSI interval for Unit 1, which is scheduled to end on December 13, 2013 (after the fall 2013 refueling outage), and for Unit 2, which is scheduled to end on May 9,2014. |
| | 4.0 NRC STAFF EVALUATION The NRC staff evaluated Dominion's request using the criteria contained in 10 CFR 50.55a(g)(4)(iv), which states that inservice examination of components and system pressure tests may meet the requirements set forth in subsequent editions and addenda of the ASME Code provided certain criteria are satisfied. |
| | The first criterion is that the edition and addenda of the ASME Code, Section XI that will be used in the proposed request is incorporated by reference in 10 CFR 50.55a(b). Currently, the latest edition and addenda incorporated by reference in Section 10 CFR 50.55a(b)(2) is the 2007 Edition with the 2008 Addenda, which Dominion proposed to use for the two affected components. Therefore, the NRC finds that Dominion has satisfied the first criterion. |
| | The second criterion is that the conditions listed in 10 CFR 50.55a(b) are satisfied for the specific use of the proposed subsequent edition and addenda of the ASME Code, Section XI. |
| | |
| | - 3 The NRC staff noted that 10 CFR 50.55a(b) sets no conditions on Examination Categories B-L-1 and CoB of the 2007 Edition with the 2008 Addenda of the ASME Code, Section XI. |
| | Therefore, the NRC staff finds that Dominion has satisfied the second criterion. |
| | The third criterion is that if portions of subsequent editions or addenda of the ASME Code, Section XI are used, all related requirements of the respective editions or addenda must be met. |
| | The NRC staff evaluated Dominion's Request with respect to the third criterion as follows: |
| | The NRC staff noted that Table IWB-2500-1 of the 1998 Edition to the 2007 Edition of the ASME Code, Section XI, provides examination requirements for Examination Category B-L-1, Item B12.1 0, such as RCP casing welds. However, starting in the 2008 Addenda, Table IWB-2500-1 no longer includes Examination Category B-L-1 components and any associated examination requirements. The NRC staff confirmed that the Examination Category B-L-1 components have been removed from Table IWB-2500-1 of the 2008 Addenda. Dominion stated that the removal was because the industry experience has not identified any failures in RCP casings and that performing visual examinations of the RCP casing welds will expose personnel to unnecessary radiological dose. |
| | The NRC staff noted that although the RCP pump casing welds are not required to be examined by Table IWB-2500-1 of the 2008 addenda, the internal surface of the RCP pump casing (Examination Category B-L-2) is required to be examined visually. The NRC staff believes that the examiner will most likely notice any flaws on the surface of the RCP casing welds while the casing is being inspected. In addition, the pump casing welds are made of austenitic stainless steel which is less susceptible to stress corrosion cracking than other weld filler material. The NRC has approved the use of the 2008 Addenda of the Code; therefore, the NRC staff finds that Dominion's request of using 2008 Addenda for lSI of the RCP casing welds is acceptable. |
| | The NRC staff noted that the current code of record (the 1998 Edition with the 2000 Addenda) does not contain the acceptance criteria for the Examination Category CoB, Item number C2.31 components (e.g., the reinforcing plate welds to nozzles and vessel(s) of the RHR heat exchanger). The NRC staff confirmed that the 2007 Edition contains the acceptance criteria for the Examination Category CoB components because paragraph IWC-3511.1 (b) of IWC-3511, "Standards for Examination Category CoB. Pressure Retaining Welds of Nozzles in Vessels," |
| | states that " ... For austenitic steels, the standards are in the course of preparation; the acceptance standards of Table IWB-3514-2 may be used ... " The NRC staff finds that by adopting the 2007 Edition of the ASME Code, Section XI, Dominion will be able to use the acceptance standards of Table IWB-3514-2 to disposition the inspection results of the reinforcement plate welds to the nozzles and vessel(s) of the RHR heat exchanger. In addition, Dominion stated that it will use the 2007 edition with the 2008 addenda for the examination of RCP casing welds (Examination Category B-L-1) and for paragraph IWC-3511 in its entirety and with all associated references with respect to the examination of the reinforcing plate welds to nozzles and vessel(s) of the RHR heat exchanger (Examination Category CoB, Item number C2.31). Therefore. the NRC staff finds the adoption of the 2007 Edition with the 2008 Addenda for the lSI of the reinforcing plate welds to the nozzles and vessel(s) of the RHR heat exchanger is acceptable. |
| | The NRC staff determines that Dominion has identified all related requirements of 2007 Edition with 2008 Addenda of the ASME Code, Section XI for the lSI of the RCP casing welds and |
| | |
| | -4 reinforcing plate welds to the nozzles and vessel(s) of the RHR heat exchanger and plans to satisfy those requirements. Therefore, the NRC staff finds that Dominion has satisfied the third criterion. |
| | Based on the above, the NRC staff finds that Dominion has satisfied the three criteria of 10 CFR SO.SSa(g)(4)(iv) in its request to use the 2007 Edition with 2008 Addenda of the ASME Code Section XI for the lSI of the RCP casing welds and the reinforcing plate welds to nozzles and vessel(s) of the RHR heat exchanger. |
| | S.O CONCLUSION As set forth above, the NRC staff determines that the use of the 2007 Edition with 2008 Addenda of the ASME Code, Section XI for the affected components acceptable because Dominion has satisfied the criteria in 10 CFR SO.SSa(g)(4)(iv). Accordingly, the NRC staff concludes that Dominion has adequately addressed all of the regulatory requirements set forth in 10 CFR SO.SSa(g)(4)(iv) and is in compliance with the requirements of the ASME Code, Section XI. Therefore, the NRC staff approves the use of the 2007 Edition with the 2008 Addenda of the ASME Code, Section XI, for the lSI of RCP casing welds and for paragraph IWC-3S11 for the lSI of the reinforcing plate welds to nozzles and vessel(s} of the RHR heat exchanger (Examination Category C-B, Item number C2.31) for the remainder of the fourth 10-year lSI interval at Unit 1, which is scheduled to end December 13, 2013 (after the fall 2013 refueling outage), and at Unit 2, which is scheduled to end May 9,2014. |
| | Principal Contributor: John Tsao Date: August 27, 2013 |
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| | ML13231A116 RULPL2-1/PM RRiDORULPL2-1/LA NRRI DE/EPNB NRRIDORULPL2 KCotton Figueroa TLupold/ RPascarelli 08/22113 08/21/13 07/29/2013 08/27/13}} |
Letter Sequence Approval |
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MONTHYEARML13136A1342013-05-0101 May 2013
Request for Approval to Use a Subsequent American Society of Mechanical Engineers (ASME) Code Edition and Addenda for Examination Categories B-L-1 and C-B in the Fourth Inservice Inspection (ISI) Interval
Project stage: Request
ML13182A0802013-06-24024 June 2013
Response to Request for Additional Information Request for Approval to Use a Subsequent ASME Section XI Code and Addenda for Examination Categories B-L-1 and C-B in the Fourth Inservice Inspection Interval
Project stage: Response to RAI
ML13231A1162013-08-27027 August 2013
Relief from the Requirements of the ASME Code (TAC Nos. MF1805 and MF1806)
Project stage: Approval
2013-06-24
[Table View] |
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– Proposed Alternative Relief Request P-3, P-4 Inservice Testing of Boric Acid, Component Cooling Water Pumps
ML24157A0542024-06-13013 June 2024
Audit Summary in Support of License Amendment Request for Proposed Reclassification of Low Head Safety Injection Flow Instrumentation Related to Regulatory Guide 1.97
ML24143A1622024-06-12012 June 2024
– Correction to Issuance of Amendment Nos. 297 and 280 and Surry Units 1 and 2, Correction to Issuance of Amendment Nos. 317 and 317, to Change Emergency Plan Staff Augmentation Times
ML24170B0532024-06-10010 June 2024
DOM-NAF-2-P/NP-A, Revision 0.5, Reactor Core Thermal-Hydraulics Using the VIPRE-D Computer Code
IR 05000280/20244032024-05-22022 May 2024
Information Request for the Cyber Security Baseline Inspection, Notification to Perform Inspection 05000280/2024403 and 05000281- 2024403
ML24141A2512024-05-20020 May 2024
Proposed License Amendment Request - Reclassification of Low Head Safety Injection Flow Indication Regulatory Guide 1.97 Variable - Supplemental Information
ML24141A0482024-05-17017 May 2024
EN 56958_1 Ametek Solidstate Controls, Inc
ML24136A2302024-05-13013 May 2024
Core 1 Cycle 33 Pattern Mdr Revision 0
ML24130A2032024-05-0909 May 2024
Proposed License Amendment Request Application to Revise Technical Specifications to Adopt TSTF-577, Revised Frequencies for Steam Generator Tube Inspections Supplemental Information
ML24130A2492024-05-0909 May 2024
Submittal of Information in Support of Surry Power Station Unit 1 Thermal Shield Flexure Replacement Campaign
ML24130A1192024-05-0707 May 2024
Inservice Test Program for Pumps and Valves Sixth Interval Update and Associated Relief and Alternative Requests - Response to Request for Additional Information Regarding Alternative Request V-1
ML24142A3852024-04-30030 April 2024
2023 Annual Radioactive Effluent Release Report
IR 05000280/20240012024-04-30030 April 2024
Integrated Inspection Report 05000280-2024001 and 05000281-2024001
ML24122C6522024-04-30030 April 2024
Annual Radiological Environmental Operating Report
ML24122B3032024-04-29029 April 2024
Associated Independent Spent Fuel Storage Installation, Revision to Emergency Plan Report of Change
IR 05000280/20244022024-04-29029 April 2024
Security Baseline Inspection Report 05000280/2024402 and 05000281/2024402
IR 05000280/20240112024-04-24024 April 2024
Notification of Surry Power Station Comprehensive Engineering Team Inspection - U.S. NRC Inspection Report 05000280/2024011 and 05000281/2024011
ML24108A1812024-04-15015 April 2024
Proposed License Amendment Request - Reclassification of Low Head Safety Injection Flow Indication Regulatory Guide 1.97 Variable Supplemental Information
IR 05000280/20244012024-02-0606 February 2024
Security Baseline Inspection Report 05000280/2024401, 05000281/2024401 and 07200002/2024401
IR 05000280/20230102024-01-18018 January 2024
Age Related Degradation Inspection Report 05000280-2023010 and 05000281-2023010
ML23312A1922024-01-18018 January 2024
Issuance of Amendment Nos. 316 & 316 Regarding a Risk Informed Approach for Tornado Classification of the Fuel Handling Trolley Support Structure
ML24003A9022024-01-0303 January 2024
Stations, Units 1 and 2, Emergency Plan Revision - Relocation of the Technical Support Center (TSC) - Editorial Correction
IR 05000280/20233012023-12-28028 December 2023
NRC Operator License Examination Report 05000280/2023301 and 05000281/2023301
ML23283A3052023-12-20020 December 2023
Review of Appendix F to DOM-NAF2, Qualification of the Framatome ORFEO-GAIA and ORFEO-NMGRID CHF Correlations in the Dominion Energy VIPRE-D Computer Code (EPID L-2022-LLT-0003) (Nonproprietary)
ML23352A3692023-12-18018 December 2023
Associated Independent Spent Fuel Storage Installation, Revision to Emergency Plan Report of Change
ML23334A2342023-11-30030 November 2023
Request for Exemption from Enhanced Weapons, Firearms Background Checks, and Security Event Notifications Implementation
ML23242A2292023-11-0707 November 2023
Issuance of Amendment Nos. 315 and 315, Regarding Emergency Procedure Relocation of the Technical Support Center
ML23200A2622023-11-0202 November 2023
Issuance of Amendment Nos. 314 and 314, Regarding Technical Specification and Spent Fuel Pool Criticality Change
IR 05000280/20230032023-10-25025 October 2023
Integrated Inspection Report 05000280/2023003 and 05000281/2023003
ML23286A0372023-10-13013 October 2023
Annual Submittal of Technical Specifications Bases Changes Pursuant to Technical Specification 6.4.J
ML23285A0922023-10-12012 October 2023
Inservice Testing Program for Pumps and Valves Sixth Interval Update and Associated Relief and Alternative Requests
ML23277A1172023-10-0303 October 2023
Operator Licensing Examination Approval 05000280/2023301 and 05000281/2023301
ML23230A0502023-10-0202 October 2023
5 of the Quality Assurance Topical Report - Review of Program Changes
ML23256A2672023-09-21021 September 2023
Review of the Fall 2022 Steam Generator Tube Inspection Report
ML23244A2352023-09-18018 September 2023
Request to Use a Subsequent Edition of the ASME Code, Section XI
ML23230A0012023-09-15015 September 2023
Request to Use a Provision of a Previous Edition of the ASME Boiler and Pressure Vessel Code, Section XI, for Non-Destructive Examinations
IR 05000280/20220042023-09-0101 September 2023
Reissue - Surry Power Station - Integrated Inspection Report 05000280/2022004 and 05000281/2022004
ML23244A0142023-08-30030 August 2023
Inservice Inspection Owner'S Activity Report
IR 05000280/20230052023-08-23023 August 2023
Updated Inspection Plan for Surry Power Station, Units 1 and 2 (Report 05000280/2023005 and 05000281/2023005)
ML23226A1862023-08-10010 August 2023
Proposed License Amendment Request - Reclassification of Regulatory Guide 1.97 Variable for Low Head Safety Injection Flow Instrumentation
2024-08-12
[Table view]
Category:Safety Evaluation
MONTHYEARML24164A0012024-08-12012 August 2024
Proposed Alternative Relief Request V-1 Inservice Testing of Pressure Isolation Valves (EPID l-2023-LLR-0060)
ML24165A1232024-07-17017 July 2024
Proposed Alternative Relief Request P-1, P-2 Inservice Testing of Residual Heat and Containment Spray Pumps (EPID l-2023-LLR-0058)
ML24165A2782024-07-17017 July 2024
Issuance of Amendment Nos. 318 and 318, Reclassification of Regulatory Guide 1.97 Variable for Low Head Safety Injection
ML24166A0622024-06-18018 June 2024
– Proposed Alternative Relief Request P-3, P-4 Inservice Testing of Boric Acid, Component Cooling Water Pumps
ML23312A1922024-01-18018 January 2024
Issuance of Amendment Nos. 316 & 316 Regarding a Risk Informed Approach for Tornado Classification of the Fuel Handling Trolley Support Structure
ML23283A3052023-12-20020 December 2023
Review of Appendix F to DOM-NAF2, Qualification of the Framatome ORFEO-GAIA and ORFEO-NMGRID CHF Correlations in the Dominion Energy VIPRE-D Computer Code (EPID L-2022-LLT-0003) (Nonproprietary)
ML23242A2292023-11-0707 November 2023
Issuance of Amendment Nos. 315 and 315, Regarding Emergency Procedure Relocation of the Technical Support Center
ML23200A2622023-11-0202 November 2023
Issuance of Amendment Nos. 314 and 314, Regarding Technical Specification and Spent Fuel Pool Criticality Change
ML23230A0502023-10-0202 October 2023
5 of the Quality Assurance Topical Report - Review of Program Changes
ML23244A2352023-09-18018 September 2023
Request to Use a Subsequent Edition of the ASME Code, Section XI
ML23230A0012023-09-15015 September 2023
Request to Use a Provision of a Previous Edition of the ASME Boiler and Pressure Vessel Code, Section XI, for Non-Destructive Examinations
ML23136B1392023-06-29029 June 2023
Issuance of Amendment No. 313 Administrative Changes to Subsequent Renewed Operating Licenses and Technical Specifications
ML23061A0122023-05-0909 May 2023
Issuance of Amendment Nos. 312 and 312, Regarding Technical Specifications Task Force (TSTF) Traveler 547, Revision 1
ML23072A0892023-05-0101 May 2023
(Amendments 346 & 286), North Anna 1 & 2 (Amnds 294 & 277), Surry 1 & 2 (Amnds 311 & 311), and Summer 1 (Amd 225) - Issuance of Amendments to Revise TSs to Adopt TSTF-554 Revise Reactor Coolant Leakage Requirements
ML23102A2832023-04-25025 April 2023
ASME OM Code Inservice Testing Program Request for Approval of Alternative Request V-01 Use of Mechanical Agitation Process for Pressure Isolation Valve 1-SI-241 Seat Leakage Testing
ML23100A0652023-04-25025 April 2023
Issuance of Amendment Nos. 310 and 310, Regarding Turbine Building Tornado Classification
ML23030B8472023-03-10010 March 2023
Issuance of Amendment Nos. 309 and 309, License Amendment Request Regarding a 10-Day Allowed Outage Time for Opposite Unit Auxiliary Feedwater Cross-Connect Capability
ML21320A0072022-09-0707 September 2022
Review of Appendix E to DOM-NAF-2, Qualification of the Framatome BWU-I CHF Correlation in the Dominion Energy VIPRE-D Computer Code (EPID L-2021-LLT-0000) (Non-Proprietary)
ML22193A2952022-08-26026 August 2022
Issuance of Amendment Nos. 308 and 308 License Amendment Request for Removal of the Refueling Water Chemical Addition Tank and Containment Sump, Ph Buffer Change and Safety Evaluation
ML22095A1072022-07-11011 July 2022
Issuance of Amendment Nos. 120, 344, & 284, 293 & 276, & 307 & 307 to Relocate Requirements to the QAPD
ML21253A0632021-11-19019 November 2021
Issuance of Amendment Nos. 306 and 306 to Update of the Loss of Coolant Accident Alternate Source Term Dose Analysis
ML21188A1742021-10-26026 October 2021
Issuance of Amendment Nos. 305 and 305 Revised Reactor Core Safety Limit to Reflect Topical Report WCAP-177642-P-A, Revision 1
ML21175A1852021-08-20020 August 2021
Issuance of Amendment Nos. 304 and 304 Leak-Before-Break for Pressurizer Surge, Residual Heat Removal, Safety Injection Accumulator, Reactor Coolant System Bypass and Safety Injection Lines
ML21201A1172021-08-0606 August 2021
Proposed Alternative Requests S1-I5-ISI-05 and S2-I5-ISI-06 to Eliminate Examination of Threads in Reactor Pressure Vessel Flange
ML21075A0452021-03-26026 March 2021
Request to Utilize Code Case N-885
ML20148M3592020-12-0808 December 2020
Issuance of Amendment Nos. 302 and 302 to Revise Technical Specifications Figure 3.1 1, Surry Units 1 and 2 Reactor Coolant System Heatup Limitations, and Figure 3.1-2, Surry Units 1 and 2 Reactor Coolant System
ML20293A1602020-12-0808 December 2020
Issuance of Amendment Nos. 301 and 301 to Adopt 10 CFR 50.69, Risk-Informed Categorization and Treatment of Structures, Systems and Components for Nuclear Power Reactors
ML20321A2322020-11-20020 November 2020
Request to Use a Provision of a Later Edition of the American Society of Mechanical Engineers Boiler and Pressure Vessel Code, Section XI
ML20301A4522020-10-28028 October 2020
Non-Proprietary, Issuance of Amendment Nos. 300 and 300 to Revise Technical Specifications 6.2.C, Core Operating Limits Report
ML20252A0072020-09-15015 September 2020
Request to Use a Provision of a Later Edition of the American Society of Mechanical Engineers Boiler and Pressure Vessel Code Section XI
ML20085G9642020-05-19019 May 2020
Issuance of Amendments Nos. 298 and 298 to Revise Technical Specifications Table 3.7-1, Reactor Trip Instrument Operating Conditions, for an Addition of 24-Hour Completion Time for an Inoperable Rector Trip Breaker
ML20115E3522020-05-12012 May 2020
Alternative Request S2-I5-ISI-05 ASME Section XI Inservice Inspection Program Proposed Alternative Request to Use a Mechanical Clamping Device for a One-Inch Main Steam Line Repair
ML20115E2372020-05-0707 May 2020
Issuance of Exigent Amendments Nos. 299 and 299, to Revise TS 6.4.Q, Steam Generator (SG) Program, to Allow a One-Time Deferral of the Inspection of Surry Unit 2 Sg B Spring 2020 Refueling Outage
ML20058F9662020-03-16016 March 2020
Issuance of Amendment Nos. 297 and 297 to Revise Technical Specifications 3.16, Emergency Power System, to Allow a One Time 14-Day Allowed Outage Time for Replacement of 5-KV Cables Associated with Reserve Station
ML19305D2482019-12-31031 December 2019
Issuance of Amendments Adoption of Emergency Action Level Schemes Per NEI 99-01, Rev. 6
ML19028A3842019-06-12012 June 2019
Issuance of Amendment Nos. 295 and 295 to Adopt TSTF-490, Revision 0, and Update Alternative Source Term Analyses (EPID-L-2018-LLA-0068)
ML19043A8242019-03-15015 March 2019
Relief Requests Examination Coverage for Pressurizer Nozzle Inner Radius Sections and Certain Stainless Steel Piping Welds (S2-15-LMT-CO1 and S2-15-LMT-P01)
ML18331A0602019-02-28028 February 2019
Relief Requests Regarding Examination Coverage for Pressurizer Nozzle Inner Radius Section and Certain Stainless Steel Piping Welds (S1-I5-LMT-C01 and S1-I5-LMT-P01)
ML19031B2272019-02-27027 February 2019
Issuance of Amendment Nos. 281, 264, 294, and 294 to Consolidate Emergency Operations Facilities and Associated Emergency Plan Changes
ML18318A0622018-12-10010 December 2018
Review of Reactor Vessel Material Surveillance Capsule Withdrawal Schedules (CAC Nos. MG0098 and MG0099; EPID L-2017-LLL-0021)
ML18261A0992018-10-0505 October 2018
Issuance of Amendments. Request to Revise Technical Specifications Section 3.16 Emergency Power System Regarding a Temporary 21 Day Allowed Outage Time
ML18236A2362018-09-26026 September 2018
Relief from the Requirements of the ASME Code - Proposed Alternatives S1-I5-ISI-04 and S2-I5-ISI-04
ML18225A0202018-08-29029 August 2018
ISFSI; North Anna 1 & 2 Isfsls, and Unit 3; Surry Power 1 & 2, and Isfsls); Dominion Energy Kewaunee, Inc. (Kewaunee Power Station and Isfsi): Request for Threshold Determination Under 10 CFR 50.80
ML18166A3292018-06-29029 June 2018
Revised License Renewal Commitment Pressurizer Surge Line Weld Inspection Frequency
ML18106A0072018-05-0303 May 2018
Issuance of Amendments Regarding Open Phase Protection Per NRC Bulletin 2012 01 (CAC Nos. MF9805, MF9806; EPID L-2017-LLA-0238)
ML17326A2252018-02-0909 February 2018
Issuance of Amendments Regarding License Amendment Request to Revise Residual Heat Removal and Component Cooling System Technical Specifications Requirements (CAC Nos. MF9124 and MF9125; EPID L-2017-LLA-0166)
ML18019A1952018-01-24024 January 2018
Proposed Alternative for the Use of Encoded Phased Array Ultrasonic Examination (CAC Nos. MF9923, MF9924, MF9925, MF9926, MF9927, and MF9928; EPID L-2017-LLR-0060)
ML17303A0682017-12-20020 December 2017
Nonproprietary Relief from the Requirements of the ASME Code (CAC Nos. MF8987 and MF8988; EPID L-2016-LLR-0019)
ML17332A0782017-12-12012 December 2017
ISFSI; Millstone and ISFSI; North Anna and ISFSI; Surry and ISFSI - Request for Approval of Revision 24 of the Nuclear Facility Quality Assurance Program Description Topical Report, DOM-QA-1 (CAC Nos. MF9732-MF9739; EPID L-2017-LLQ-0001)
ML17242A0142017-10-19019 October 2017
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2024-08-12
[Table view] |
Text
UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D.C. 20555-0001 August 27,2013 Mr. David A. Heacock President and Chief Nuclear Officer Virginia Electric and Power Company Innsbrook Technical Center SOOO Dominion Blvd.
Glenn Allen, VA 23060 SUB..IECT: SURRY POWER STATION, UNIT NOS 1 AND 2 - RELIEF FROM THE REQUIREMENTS OF THE ASME CODE (TAC NOS. MF180S AND MF1806)
Dear Mr. Heacock:
By letter dated May 1, 2013, with supplement dated June 24, 2013, Virginia Electric and Power Company (Dominion) submitted for Nuclear Regulatory Commission (NRC) review and approval a request to use a subsequent edition and addenda of the American Society of Mechanical Engineers Boiler and Pressure Vessel Code (ASME Code),Section XI, for the inservice inspection (lSI) of Examination Categories B-L-1 and C-B components in the fourth ten-year lSI interval at Surry Power Station, Units 1 and 2.
Specifically, pursuant to Title 10 of the Code of Federal Regulations (10 CFR) 10 CFR SO.SSa(g)(4)(iv), the licensee requested to use later code editions and addenda for in-service testing items subject to the limitations and modifications listed in 10 CFR SO.SSa(b).
The NRC staff determines that the use of the 2007 Edition with 2008 Addenda of the ASME Code,Section XI for the affected components acceptable because Dominion has satisfied the criteria in 10 CFR SO.SSa(g)(4)(iv). Accordingly, the NRC staff concludes that Dominion has adequately addressed all of the regulatory requirements set forth in 10 CFR SO.SSa(g)(4}(iv) and is in compliance with the requirements of the ASME Code,Section XI. Therefore, the NRC staff approves the use of the 2007 Edition with the 2008 Addenda of the ASME Code,Section XI, for the lSI of reactor coolant pump casing welds and for paragraph IWC-3S11 for the lSI of the reinforcing plate welds to nozzles and vessel(s) of the residual heat removal heat exchanger (Examination Category C-B, Item number C2.31) for the remainder of the fourth 10-year lSI interval at Unit 1, which is scheduled to end December 13, 2013 (after the fall 2013 refueling outage), and at Unit 2, which is scheduled to end May 9,2014
D. Heacock - 2 If you have any questions, please contact the Project Manager, Karen Cotton at 301-415-1438 or via e-mail at karen.cotton@nrc.gov.
Sincerely, Robert Pascarelli, Chief Plant Licensing Branch 11-1 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket Nos: 50-280 and 50-281
Enclosure:
Safety Evaluation cc w/encl: Distribution via ListServ
UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D.C. 20555-0001 SAFETY EVALUATION BY THE OFFICE OF NUCLEAR REACTOR REGULATION REQUEST TO USE SUBSEQUENT EDITION OF ASME CODE VIRGINIA ELECTRIC AND POWER COMPANY SURRY POWER STATION UNITS 1 AND 2 DOCKET NUMBER 50-280 AND 50-281
1.0 INTRODUCTION
By letter dated May 1, 2013 (Agencywide Documents and Access Management System (ADAMS) Accession No. ML13136A134), with supplement dated June 24, 2013 (ADAMS Accession No. ML13182A080), Virginia Electric and Power Company (Dominion) submitted for Nuclear Regulatory Commission (NRC) review and approval a request to use a subsequent edition and addenda of the American Society of Mechanical Engineers Boiler and Pressure Vessel Code (ASME Code),Section XI, for the inservice inspection (lSI) of Examination Categories B-L-1 and C-B components in the fourth ten-year lSI interval at Surry Power Station, Units 1 and 2.
Specifically, pursuant to Title 10 of the Code of Federal Regulations (10 CFR) 50.55a(g)(4)(iv),
Dominion requested to use the 2007 Edition with the 2008 Addenda of the ASME Code,Section XI, for the lSI of reactor coolant pump (RCP) casing welds and reinforcement plate welds to nozzles and vessel(s) of the residual heat removal (RHR) heat exchanger.
2.0 REGULATORY EVALUATION
Pursuant to 10 CFR 50.55a(g)(4), ASME Code Class 1,2 and 3 components (including supports) shall meet the requirements, except the design and access provisions and the pre service examination requirements, set forth in the ASME Code,Section XI, "Rules for Inservice Inspection of Nuclear Power Plant Components," to the extent practical within the limitations of design, geometry, and materials of construction of the components. Section 10 CFR 50.55a(g)(4)(ii) requires that lSI examinations of components and system pressure tests conducted during successive 120 month inspection intervals must comply with the requirements in the latest edition and addenda of Section XI of ASME Code incorporated by reference in 10 CFR 50.55a(b) 12 months prior to the start of the 120-month interval, subject to the conditions listed therein.
Section 10 CFR 50.55a(g)(4)(iv) states that inservice examination of components and system pressure tests may meet the requirements set forth in subsequent editions and addenda of the ASME Code provided that they are incorporated by reference in 10 CFR 50.55a(b), subject to the conditions listed in 10 CFR 50.55a(b), and subject to Commission approval. Portions of editions or addenda may be used provided that all related requirements of the respective Enclosure
-2 editions or addenda are met. Currently, Section 10 CFR 50.55a(b)(2) incorporates by reference the ASME Code Section XI from the 1970 Edition through the 1976 Winter Addenda, and the 1977 Edition through the 2007 Edition with the 2008 Addenda.
Based on the above analysis, the NRC staff finds that it has the regulatory authority to authorize the use of a subsequent edition and addenda of the ASME Code, as requested by Dominion.
3.0 DOMINION'S REQUEST The code of record for the current fourth 10-year lSI interval at Surry, Units 1 and 2, is the 1998 Edition with the 2000 Addenda of the ASME Code,Section XI. Dominion proposed to use the 2007 Edition with the 2008 Addenda of the ASME Code,Section XI, for the lSI of RCP casing welds (Examination Category B-L-1) and for Paragraph IWC-3511 in its entirety and with all associated references for the lSI of the reinforcing plate welds to nozzles and vessel(s) of the RHR heat exchanger (Examination Category CoB, Item Number C2.31) in the fourth 10-year lSI interval for Surry, Units 1 and 2.
Dominion stated that ASME removed Examination Category B-L-1 welds from the ASME Code Section XI, 2007 Edition with 2008 Addenda because industry operating experience has not identified any failures in RCP casings. According to Dominion, examining the RCP casing welds results in unnecessary radiation exposure for non-destructive examination personnel.
Dominion further stated that flaw acceptance standards for Class 2 austenitic pressure retaining welds of nozzles in vessels (Examination Category CoB, Item number C2.31) exists in IWC-3511, "Standards for Examination Category CoB, Pressure Retaining Welds of Nozzles In Vessels," of the 2007 Edition with the 2008 Addenda, by referring to Table IWB-3514.2.
Dominion noted that the current code of record does not contain the flaw acceptance criteria for Examination Category CoB components (e.g., RHR heat exchanger welds).
Dominion proposed that the request be applicable for the remainder of the fourth 10-year lSI interval for Unit 1, which is scheduled to end on December 13, 2013 (after the fall 2013 refueling outage), and for Unit 2, which is scheduled to end on May 9,2014.
4.0 NRC STAFF EVALUATION The NRC staff evaluated Dominion's request using the criteria contained in 10 CFR 50.55a(g)(4)(iv), which states that inservice examination of components and system pressure tests may meet the requirements set forth in subsequent editions and addenda of the ASME Code provided certain criteria are satisfied.
The first criterion is that the edition and addenda of the ASME Code,Section XI that will be used in the proposed request is incorporated by reference in 10 CFR 50.55a(b). Currently, the latest edition and addenda incorporated by reference in Section 10 CFR 50.55a(b)(2) is the 2007 Edition with the 2008 Addenda, which Dominion proposed to use for the two affected components. Therefore, the NRC finds that Dominion has satisfied the first criterion.
The second criterion is that the conditions listed in 10 CFR 50.55a(b) are satisfied for the specific use of the proposed subsequent edition and addenda of the ASME Code,Section XI.
- 3 The NRC staff noted that 10 CFR 50.55a(b) sets no conditions on Examination Categories B-L-1 and CoB of the 2007 Edition with the 2008 Addenda of the ASME Code,Section XI.
Therefore, the NRC staff finds that Dominion has satisfied the second criterion.
The third criterion is that if portions of subsequent editions or addenda of the ASME Code,Section XI are used, all related requirements of the respective editions or addenda must be met.
The NRC staff evaluated Dominion's Request with respect to the third criterion as follows:
The NRC staff noted that Table IWB-2500-1 of the 1998 Edition to the 2007 Edition of the ASME Code,Section XI, provides examination requirements for Examination Category B-L-1, Item B12.1 0, such as RCP casing welds. However, starting in the 2008 Addenda, Table IWB-2500-1 no longer includes Examination Category B-L-1 components and any associated examination requirements. The NRC staff confirmed that the Examination Category B-L-1 components have been removed from Table IWB-2500-1 of the 2008 Addenda. Dominion stated that the removal was because the industry experience has not identified any failures in RCP casings and that performing visual examinations of the RCP casing welds will expose personnel to unnecessary radiological dose.
The NRC staff noted that although the RCP pump casing welds are not required to be examined by Table IWB-2500-1 of the 2008 addenda, the internal surface of the RCP pump casing (Examination Category B-L-2) is required to be examined visually. The NRC staff believes that the examiner will most likely notice any flaws on the surface of the RCP casing welds while the casing is being inspected. In addition, the pump casing welds are made of austenitic stainless steel which is less susceptible to stress corrosion cracking than other weld filler material. The NRC has approved the use of the 2008 Addenda of the Code; therefore, the NRC staff finds that Dominion's request of using 2008 Addenda for lSI of the RCP casing welds is acceptable.
The NRC staff noted that the current code of record (the 1998 Edition with the 2000 Addenda) does not contain the acceptance criteria for the Examination Category CoB, Item number C2.31 components (e.g., the reinforcing plate welds to nozzles and vessel(s) of the RHR heat exchanger). The NRC staff confirmed that the 2007 Edition contains the acceptance criteria for the Examination Category CoB components because paragraph IWC-3511.1 (b) of IWC-3511, "Standards for Examination Category CoB. Pressure Retaining Welds of Nozzles in Vessels,"
states that " ... For austenitic steels, the standards are in the course of preparation; the acceptance standards of Table IWB-3514-2 may be used ... " The NRC staff finds that by adopting the 2007 Edition of the ASME Code,Section XI, Dominion will be able to use the acceptance standards of Table IWB-3514-2 to disposition the inspection results of the reinforcement plate welds to the nozzles and vessel(s) of the RHR heat exchanger. In addition, Dominion stated that it will use the 2007 edition with the 2008 addenda for the examination of RCP casing welds (Examination Category B-L-1) and for paragraph IWC-3511 in its entirety and with all associated references with respect to the examination of the reinforcing plate welds to nozzles and vessel(s) of the RHR heat exchanger (Examination Category CoB, Item number C2.31). Therefore. the NRC staff finds the adoption of the 2007 Edition with the 2008 Addenda for the lSI of the reinforcing plate welds to the nozzles and vessel(s) of the RHR heat exchanger is acceptable.
The NRC staff determines that Dominion has identified all related requirements of 2007 Edition with 2008 Addenda of the ASME Code,Section XI for the lSI of the RCP casing welds and
-4 reinforcing plate welds to the nozzles and vessel(s) of the RHR heat exchanger and plans to satisfy those requirements. Therefore, the NRC staff finds that Dominion has satisfied the third criterion.
Based on the above, the NRC staff finds that Dominion has satisfied the three criteria of 10 CFR SO.SSa(g)(4)(iv) in its request to use the 2007 Edition with 2008 Addenda of the ASME Code Section XI for the lSI of the RCP casing welds and the reinforcing plate welds to nozzles and vessel(s) of the RHR heat exchanger.
S.O CONCLUSION As set forth above, the NRC staff determines that the use of the 2007 Edition with 2008 Addenda of the ASME Code,Section XI for the affected components acceptable because Dominion has satisfied the criteria in 10 CFR SO.SSa(g)(4)(iv). Accordingly, the NRC staff concludes that Dominion has adequately addressed all of the regulatory requirements set forth in 10 CFR SO.SSa(g)(4)(iv) and is in compliance with the requirements of the ASME Code,Section XI. Therefore, the NRC staff approves the use of the 2007 Edition with the 2008 Addenda of the ASME Code,Section XI, for the lSI of RCP casing welds and for paragraph IWC-3S11 for the lSI of the reinforcing plate welds to nozzles and vessel(s} of the RHR heat exchanger (Examination Category C-B, Item number C2.31) for the remainder of the fourth 10-year lSI interval at Unit 1, which is scheduled to end December 13, 2013 (after the fall 2013 refueling outage), and at Unit 2, which is scheduled to end May 9,2014.
Principal Contributor: John Tsao Date: August 27, 2013
ML13231A116 RULPL2-1/PM RRiDORULPL2-1/LA NRRI DE/EPNB NRRIDORULPL2 KCotton Figueroa TLupold/ RPascarelli 08/22113 08/21/13 07/29/2013 08/27/13
