ULNRC-06106, Supplemental Response to RAI B2.1.6-4d, Part (a) Related to Reactor Vessel Internals Cold Worked Material
| ML14087A092 | |
| Person / Time | |
|---|---|
| Site: | Callaway  |
| Issue date: | 03/28/2014 |
| From: | Kremer G Ameren Missouri, Union Electric Co |
| To: | Document Control Desk, Office of Nuclear Reactor Regulation |
| References | |
| ULNRC-06106 | |
| Download: ML14087A092 (4) | |
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iWAmeren MISSOURI March 28, 2014 ULNRC-061 06 U.S. Nuclear Regulatory Commission Attn: Document Control Desk Washington, DC 20555-0001 Ladies and Gentlemen:
10 CFR 2.101 10 CFR 2.109(b) 10 CFR 50.4 10 CFR 50.30 10 CFR 51.53(c) 10 CFR 54 DOCKET NUMBER 50-483 CALLAWAY PLANT UNIT 1 UNION ELECTRIC CO.
FACILITY OPERATING LICENSE NPF-30 SUPPLEMENTAL RESPONSE TO RAI B2.1.6-4d, PART (a)
References:
- 1) ULNRC-05830 dated December 15,2011
- 2) NRC Letter, "Request for Additional Information for the Review of the Callaway Plant, Unit 1, License Renewal Application, Set 29 (TAC No. ME7708)," dated December 2, 2013
- 3) ULNRC-06079 dated February 5, 2014
- 4) NRC Letter, "Safety Evaluation Report with Open Items Related to the License Renewal of Callaway Plant, Unit 1 (TAC No.
ME7708)," dated April23, 2013 Callaway Plant By the Reference 1 letter, Union Electric Company (Ameren Missouri) submitted a license renewal application (LRA) for Callaway Plant Unit 1. Reference 2, dated December 2, 2013, transmitted the twenty-ninth (29) Request for Additional Information (RAI) related to this application. Reference 3 transmitted a response to RAI B2.1.6-4d, Part (a) related to reactor vessel internals cold worked material, including a commitment describing options if reactor vessel internals' components were determined to be subject to 20% or greater cold work and 30 ksi operating stresses. The response to this RAI was also the subject of a public meeting between the staff and Ameren Missouri personnel held on February 20, 2014.
PO Box 620 Fulton, MD 65251 AmerenMissouri.com STARS* Alliance
ULNRC-061 06 March 28, 2014 Page 2 contains a supplemental response to RAI B2.1.6-4d, Part (a) which provides the results of an evaluation by Westinghouse Electric Company, the plant nuclear steam supply system design entity. This cold work evaluation concluded that the plant-specific material fabrication and design are consistent with MRP-191, "Materials Reliability Program: Screening, Categorization, and Ranking of Reactor Internals Components for Westinghouse and Combustion Engineering PWR Design" and the MRP-227-A, "Materials Reliability Program: Pressurized Water Reactor Internals Inspection and Evaluation Guidelines, " aging management requirements as related to cold work and are directly applicable to Callaway Unit 1.
This supplemental response provides information intended to assist the staff in closing Open Item 82.1.6-1 identified in Reference 4.
It should be noted that there are no changes to commitments contained in this transmittal; however, based on the information provided in this response, it is Ameren Missouri's plan to revise Commitment 44 (LRA Table A4-1) to show it closed in the next LRA amendment. The next LRA amendment is anticipated to be submitted in conjunction with the response to LRA RAI Set #31 on or before April24, 2014.
Also note that the information related to the evaluation performed by Westinghouse and summarized in this response is copywrited by Westinghouse Electric Company LLC.
If you have any questions with regard to this supplemental RAI response, please contact Ms. Sarah Kovaleski at (573) 489-9435 or Mr. Roger Wink at (314) 225-1561.
I declare under penalty of perjury that the foregoing is true and correct.
Sincerely, Executed on:
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Greg Kremer Director, Engineering Programs DS/nls
Enclosure:
- 1) Supplemental Response to Request for Additional Information (RAI) B2.1.6-4d, part (a)
ULNRC-061 06 March 28, 2014 Page 3 cc:
Mr. Marc L. Dapas Regional Administrator U.S. Nuclear Regulatory Commission Region IV 1600 East Lamar Boulevard Arlington, TX 76011-4511 Senior Resident Inspector Callaway Resident Office U.S. Nuclear Regulatory Commission 8201 NRC Road Steedman, MO 65077 Mr. John Daily, Senior Project Manager Project Branch 1 Division of License Renewal Office of Nuclear Reactor Regulation U.S. Nuclear Regulatory Commission Mail Stop 0-11F1 Washington, DC 20555 Mr. Fred Lyon Project Manager, Callaway Plant Office of Nuclear Reactor Regulation U.S. Nuclear Regulatory Commission Mail Stop 0-8B 1 Washington, DC 20555-2738 Mr. Gregory A. Pick U.S. Nuclear Regulatory Commission Region IV 1600 East Lamar Boulevard Arlington, TX 76011-4511
ULNRC-061 06 March 28, 2014 Page4 Index and send hardcopy to QA File A160.0761 Hardcopy:
Certrec Corporation 4150 International Plaza Suite 820 Fort Worth, TX 76109 (Certrec receives ALL attachments as long as they are non-safeguards and may be publicly disclosed.)
Electronic distribution for the following can be made via Tech Spec ULNRC Distribution:
F. M. Diya C. 0. Reasoner III D. W. Neterer L. H. Graessle B.L.Cox J. S. Geyer S.M. Maglio T. B. Elwood Corporate Communications NSRB Secretary B. C. Daniels M. A. McLachlan G. S. Kremer S. G. Kovaleski R. C. Wink STARS Regulatory Affairs Mr. John O'Neill (Pillsbury Winthrop Shaw Pittman LLP)
Missouri Public Service Commission Ms. Leanne Tippett-Mosby (DNR)