ML14203A063
| ML14203A063 | |
| Person / Time | |
|---|---|
| Site: | Callaway  |
| Issue date: | 07/25/2014 |
| From: | Lyon C Plant Licensing Branch IV |
| To: | Diya F Union Electric Co |
| Mitchell E | |
| References | |
| TAC MF3876 | |
| Download: ML14203A063 (3) | |
Text
UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D.C. 20555-0001 Mr. Fadi Diya Senior Vice President and Chief Nuclear Officer Union Electric Company P.O. Box 620 Fulton, MO 65251 July 25, 2014
SUBJECT:
CALLAWAY PLANT, UNIT 1 - REQUEST FOR ADDITIONAL INFORMATION RE: RELIEF REQUEST 13R-17, PROPOSED ALTERNATIVE TO ASME CODE, SECTION XI REQUIREMENTS, WHICH EXTENDS REACTOR VESSEL INSERVICE INSPECTION FREQUENCY FROM 10 YEARS TO 20 YEARS (TAC NO. MF3876)
Dear Mr. Diya:
By application dated April 8, 2014 (Agencywide Documents Access and Management System (ADAMS) Accession No. ML14098A428), to the U.S. Nuclear Regulatory Commission (NRC),
Union Electric Company (dba Ameren Missouri, the licensee) submitted a relief request to provide an alternative to the American Society of Mechanical Engineers Boiler and Pressure Vessel Code (ASME Code),Section XI, "Rules and lnservice Inspection of Nuclear Power Plant Components," for Callaway Plant, Unit 1. The ASME Code Edition and Addenda applicable to Callaway's third 1 0-year inservice inspection interval is the 1998 Edition with 2000 Addenda, which extends the reactor vessel inservice inspection frequency from 10 to 20 years.
The NRC staff has determined that additional information, as requested in the enclosure, is needed to complete its review. Please provide a response to the questions within 30 days of the date of this letter. If circumstances result in the need to revise the requested response date, please contact me at 301-415-2296 or via e-mail at Fred.Lyon@nrc.gov.
Docket No. 50-483
Enclosure:
Request for Additional Information cc w/encl: Distribution via Listserv Sincerely,
~
Carl F. Lyon, Project Manager Plant Licensing Branch IV-1 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation
REQUEST FOR ADDITIONAL INFORMATION RELIEF REQUEST TO EXTEND REACTOR VESSEL INSERVICE INSPECTION FREQUENCY UNION ELECTRIC COMPANY CALLAWAY UNIT 1 DOCKET NO. 50-483 By application dated April 8, 2014 (Agencywide Documents Access and Management System (ADAMS) Accession No. ML14098A428), to the U.S. Nuclear Regulatory Commission (NRC),
Union Electric Company (dba Ameren Missouri, the licensee) submitted a relief request to provide an alternative to the American Society of Mechanical Engineers Boiler and Pressure Vessel Code (ASME Code),Section XI, "Rules and lnservice Inspection of Nuclear Power Plant Components," for Callaway Plant, Unit 1.
The NRC staff has determined that additional information, as listed below is needed to complete its review:
- 1.
Please confirm that the next ASME Code-required volumetric examination of category B-A and B-D welds must be performed by the end of the extended third in service inspection interval (December 18, 2024 ).
- 2.
Please provide the linear inches for the last weld inspection. Also, please provide the actual area of plate inspected during the last weld inspection.
- 3.
In the license renewal application dated December 15, 2011 (ADAMS Accession No. ML113530374 ), page 4.2-9, the value of RT NDT(U) of "Nozzle Shell to Intermediate Shell Weld Seam" is different from the value in this relief request.
Please explain this discrepancy.
Enclosure
Mr. Fadi Diya Senior Vice President and Chief Nuclear Officer Union Electric Company P.O. Box 620 Fulton, MO 65251 July 25, 2014
SUBJECT:
CALLAWAY PLANT, UNIT 1-REQUEST FOR ADDITIONAL INFORMATION RE: RELIEF REQUEST 13R-17, PROPOSED ALTERNATIVE TO ASME CODE, SECTION XI REQUIREMENTS, WHICH EXTENDS REACTOR VESSEL INSERVICE INSPECTION FREQUENCY FROM 10 YEARS TO 20 YEARS (TAC NO. MF3876)
Dear Mr. Diya:
By application dated April 8, 2014 (Agencywide Documents Access and Management System (ADAMS) Accession No. ML14098A428), to the U.S. Nuclear Regulatory Commission (NRC),
Union Electric Company (dba Ameren Missouri, the licensee) submitted a relief request to provide an alternative to the American Society of Mechanical Engineers Boiler and Pressure Vessel Code (ASME Code),Section XI, "Rules and lnservice Inspection of Nuclear Power Plant Components," for Callaway Plant, Unit 1. The ASME Code Edition and Addenda applicable to Callaway's third 1 0-year in service inspection interval is the 1998 Edition with 2000 Addenda, which extends the reactor vessel inservice inspection frequency from 10 to 20 years.
The NRC staff has determined that additional information, as requested in the enclosure, is needed to complete its review. Please provide a response to the questions within 30 days of the date of this letter. If circumstances result in the need to revise the requested response date, please contact me at 301-415-2296 or via e-mail at Fred.Lyon@nrc.gov.
Docket No. 50-483
Enclosure:
Request for Additional Information cc w/encl: Distribution via Listserv DISTRIBUTION:
Sincerely, IRA/
Carl F. Lyon, Project Manager Plant Licensing Branch IV-1 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation PUBLIC LPLIV Reading RidsAcrsAcnw_MaiiCTR Resource RidsNrrDeEvib Resource RidsNrrDoriLpl4-1 Resource RidsNrrLAJBurkhardt Resource RidsNrrPMCallaway Resource RidsRgn4MaiiCenter Resource PPurtscher, NRR/DE/EVIB ADAMS Accession o.:
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- 1 d t d J I 10 2014 OFFICE NRRIDORULPL4/PM NRR/DORULPL4/PM NRR/DORL/LPL4/LA NAME EMitchell FLyon JBurkhardt DATE 7/16/14 7/24/14 7/22/14 OFFICE NRRIDE/EVIB/BC*
NRR/DORLILPL4/BC NRR/DORLILPL4/PM NAME SRosenberg MMarkley (PBamford for)
FLyon DATE 7/10/14 7/25/14 7/25/14 OFFICIAL RECORD COPY