ML12083A020: Difference between revisions
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| document type = Letter, Request for Additional Information (RAI) | | document type = Letter, Request for Additional Information (RAI) | ||
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| project = TAC:ME7126 | |||
| stage = Other | |||
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{{#Wiki_filter:UNITED NUCLEAR REGULATORY WASHINGTON, D.C. 20555*0001 March 30, 2012 Mr. Joseph W. Shea Manager, Corp. Nuclear Licensing Programs Tennessee Valley Authority 1101 Market Street, LP 4B-C Chattanooga, TN 37402-2801 BROWNS FERRY NUCLEAR PLANT: REQUEST FOR ADDITIONAL INFORMATION REGARDING LICENSE RENEWAL COMMITMENT TO SUBMIT IMPLEMENTING PROCEDURES FOR THE UNIT 1 PERIODIC INSPECTION PROGRAM (TAC NO. ME7126) Dear Mr. Shea: By letter dated April 21 ,2006, the Tennessee Valley Authority (TVA) submitted Commitment No. 49 to develop and submit to the U.S. Nuclear Regulatory Commission (NRC), the implementing procedures for the Unit 1 Periodic Inspection Program. By letter dated April 23, 2007, TVA submitted implementing procedure 1-TI-521, "Unit 1 Periodic Inspection Program for License Renewal." To verify completion of the commitment, the staff requested additional information which is shown in the enclosure. A date for the response is within 30 days from the date of this letter. If you have any questions, please contact me by telephone at 301-415-4054 or by email at Heather.Jones@nrc.gov. Sincerely, H ather M. Jones, roject Manager Program Operations Branch Division of License Renewal Office of Nuclear Reactor Regulation Docket No. 50-259 Enclosure: As stated cc w/encl: Listserv OFFICE OF NUCLEAR REACTOR REGULATION REQUEST FOR ADDITIONAL INFORMATION TENNESSEE VALLEY AUTHORITY BROWNS FERRY NUCLEAR PLANT, UNIT 1 DOCKET NO. 50-259 By letter dated April 21 ,2006, the Tennessee Valley Authority (TVA) submitted Commitment No. 49 to develop and submit to the U.S. Nuclear Regulatory Commission, the implementing procedures for the Unit 1 Periodic Inspection Program. By letter dated April 23, 2007 , TVA submitted implementing procedure 1-TI-521, "Unit 1 Periodic Inspection Program for License Renewal." In the procedure, the licensee stated that no candidate piping was identified for the stainless steel/raw water population, because all the pipe diameters were 1 inch or smaller, making ultrasonic testing (UT) measurements impractical. The licensee also stated that only nine inspection locations were identified for the stainless steel/treated water grouping, because the piping was either of small diameter or had been replaced. The license renewal application aging management program stated that the inspection sample is based on 95/95 assurance criterion (95 percent confidence level that 95 percent of a population is not experiencing degradation), which would specify a maximum of 59 inspection locations for an infinite lot size. It does not appear that implementing procedure 1-1'1-521 contains any inspections for the stainless steel/raw water material-environment population and only a limited number of inspections for the stainless steel/treated water population. Describe the alternative aging management approach that will be taken for small-diameter stainless steel piping under the Unit 1 Periodic Inspection Program as a result of limitations of the UT inspection technique. | |||
March 30, 2012 Mr. Joseph W. Shea Manager, Corp. Nuclear Licensing Programs Tennessee Valley Authority 1101 Market Street, LP 4B-C Chattanooga, TN 37402-2801 BROWNS FERRY NUCLEAR PLANT: REQUEST FOR ADDITIONAL INFORMATION REGARDING LICENSE RENEWAL COMMITMENT TO SUBMIT IMPLEMENTING PROCEDURES FOR THE UNIT 1 PERIODIC INSPECTION PROGRAM (TAC NO. ME7126) Dear Mr. Shea: By letter dated April 21,2006, the Tennessee Valley Authority (TVA) submitted Commitment No. 49 to develop and submit to the U.S. Nuclear Regulatory Commission (NRC), the implementing procedures for the Unit 1 Periodic Inspection Program. By letter dated April 23, 2007, TVA submitted implementing procedure 1-TI-521, "Unit 1 Periodic Inspection Program for License Renewal." To verify completion of the commitment, the staff requested additional information which is shown in the enclosure. A date for the response is within 30 days from the date of this letter. If you have any questions, please contact me by telephone at 301-415-4054 or by email at Heather.Jones@nrc.gov. Sincerely, IRA! Heather M. Jones, Project Manager Program Operations Branch Division of License Renewal Office of Nuclear Reactor Regulation Docket No. 50-259 Enclosure: As stated cc w/encl: Listserv DISTRIBUTION: See next page ADAMS Accession No . ML 12083A020 .. OFFICE LA:RPB1 :DLR PM:RPOB/DLR BC: RPOB/DLR NAME YEdmonds HJones YDiaz-Sanabria DATE 3/27/2012 3/27/2012 3/30/2012 OFFICIAL RECORD Letter to Mr. Shea from H. Jones dated March 30, 2012 BROWNS FERRY NUCLEAR PLANT: REQUEST FOR ADDITIONAL INFORMATION REGARDING LICENSE RENEWAL COMMITMENT TO SUBMIT IMPLEMENTING PROCEDURES FOR THE UNIT 1 PERIODIC INSPECTION PROGRAM (TAC NO. ME7126) DISTRIBUTION: E-MAIL: PUBLIC RidsNrrDlr Resource HJones YDiaz-Sanabria | |||
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Revision as of 05:02, 2 April 2018
| ML12083A020 | |
| Person / Time | |
|---|---|
| Site: | Browns Ferry  |
| Issue date: | 03/30/2012 |
| From: | Jones H M NRC/NRR/DLR/RPOB |
| To: | Shea J W Tennessee Valley Authority |
| Jones H M | |
| References | |
| TAC ME7126 | |
| Download: ML12083A020 (4) | |
Text
UNITED NUCLEAR REGULATORY WASHINGTON, D.C. 20555*0001 March 30, 2012 Mr. Joseph W. Shea Manager, Corp. Nuclear Licensing Programs Tennessee Valley Authority 1101 Market Street, LP 4B-C Chattanooga, TN 37402-2801 BROWNS FERRY NUCLEAR PLANT: REQUEST FOR ADDITIONAL INFORMATION REGARDING LICENSE RENEWAL COMMITMENT TO SUBMIT IMPLEMENTING PROCEDURES FOR THE UNIT 1 PERIODIC INSPECTION PROGRAM (TAC NO. ME7126) Dear Mr. Shea: By letter dated April 21 ,2006, the Tennessee Valley Authority (TVA) submitted Commitment No. 49 to develop and submit to the U.S. Nuclear Regulatory Commission (NRC), the implementing procedures for the Unit 1 Periodic Inspection Program. By letter dated April 23, 2007, TVA submitted implementing procedure 1-TI-521, "Unit 1 Periodic Inspection Program for License Renewal." To verify completion of the commitment, the staff requested additional information which is shown in the enclosure. A date for the response is within 30 days from the date of this letter. If you have any questions, please contact me by telephone at 301-415-4054 or by email at Heather.Jones@nrc.gov. Sincerely, H ather M. Jones, roject Manager Program Operations Branch Division of License Renewal Office of Nuclear Reactor Regulation Docket No. 50-259 Enclosure: As stated cc w/encl: Listserv OFFICE OF NUCLEAR REACTOR REGULATION REQUEST FOR ADDITIONAL INFORMATION TENNESSEE VALLEY AUTHORITY BROWNS FERRY NUCLEAR PLANT, UNIT 1 DOCKET NO. 50-259 By letter dated April 21 ,2006, the Tennessee Valley Authority (TVA) submitted Commitment No. 49 to develop and submit to the U.S. Nuclear Regulatory Commission, the implementing procedures for the Unit 1 Periodic Inspection Program. By letter dated April 23, 2007 , TVA submitted implementing procedure 1-TI-521, "Unit 1 Periodic Inspection Program for License Renewal." In the procedure, the licensee stated that no candidate piping was identified for the stainless steel/raw water population, because all the pipe diameters were 1 inch or smaller, making ultrasonic testing (UT) measurements impractical. The licensee also stated that only nine inspection locations were identified for the stainless steel/treated water grouping, because the piping was either of small diameter or had been replaced. The license renewal application aging management program stated that the inspection sample is based on 95/95 assurance criterion (95 percent confidence level that 95 percent of a population is not experiencing degradation), which would specify a maximum of 59 inspection locations for an infinite lot size. It does not appear that implementing procedure 1-1'1-521 contains any inspections for the stainless steel/raw water material-environment population and only a limited number of inspections for the stainless steel/treated water population. Describe the alternative aging management approach that will be taken for small-diameter stainless steel piping under the Unit 1 Periodic Inspection Program as a result of limitations of the UT inspection technique.
March 30, 2012 Mr. Joseph W. Shea Manager, Corp. Nuclear Licensing Programs Tennessee Valley Authority 1101 Market Street, LP 4B-C Chattanooga, TN 37402-2801 BROWNS FERRY NUCLEAR PLANT: REQUEST FOR ADDITIONAL INFORMATION REGARDING LICENSE RENEWAL COMMITMENT TO SUBMIT IMPLEMENTING PROCEDURES FOR THE UNIT 1 PERIODIC INSPECTION PROGRAM (TAC NO. ME7126) Dear Mr. Shea: By letter dated April 21,2006, the Tennessee Valley Authority (TVA) submitted Commitment No. 49 to develop and submit to the U.S. Nuclear Regulatory Commission (NRC), the implementing procedures for the Unit 1 Periodic Inspection Program. By letter dated April 23, 2007, TVA submitted implementing procedure 1-TI-521, "Unit 1 Periodic Inspection Program for License Renewal." To verify completion of the commitment, the staff requested additional information which is shown in the enclosure. A date for the response is within 30 days from the date of this letter. If you have any questions, please contact me by telephone at 301-415-4054 or by email at Heather.Jones@nrc.gov. Sincerely, IRA! Heather M. Jones, Project Manager Program Operations Branch Division of License Renewal Office of Nuclear Reactor Regulation Docket No. 50-259 Enclosure: As stated cc w/encl: Listserv DISTRIBUTION: See next page ADAMS Accession No . ML 12083A020 .. OFFICE LA:RPB1 :DLR PM:RPOB/DLR BC: RPOB/DLR NAME YEdmonds HJones YDiaz-Sanabria DATE 3/27/2012 3/27/2012 3/30/2012 OFFICIAL RECORD Letter to Mr. Shea from H. Jones dated March 30, 2012 BROWNS FERRY NUCLEAR PLANT: REQUEST FOR ADDITIONAL INFORMATION REGARDING LICENSE RENEWAL COMMITMENT TO SUBMIT IMPLEMENTING PROCEDURES FOR THE UNIT 1 PERIODIC INSPECTION PROGRAM (TAC NO. ME7126) DISTRIBUTION: E-MAIL: PUBLIC RidsNrrDlr Resource HJones YDiaz-Sanabria