ML13066A244
| ML13066A244 | |
| Person / Time | |
|---|---|
| Site: | Crane  |
| Issue date: | 03/19/2013 |
| From: | Peter Bamford Plant Licensing Branch 1 |
| To: | Pacilio M Exelon Nuclear |
| Bamford P | |
| References | |
| TAC MF0046 | |
| Download: ML13066A244 (3) | |
Text
t.p.!I REGU(
UNITED STATES
.:;,v>,;
"1)
NUCLEAR REGULATORY COMMISSION 01' 7,
WASHINGTON, D.C. 20555"()001 0
ti
~
March 19, 2013
~
'</.
~
~~
~O Mr. Michael J. Pacilio President and Chief Nuclear Officer Exelon Nuclear 4300 Winfield Road Warrenville, IL 60555
SUBJECT:
THREE MILE ISLAND NUCLEAR STATION, UNIT 1 - REQUEST FOR ADDITIONAL INFORMATION REGARDING FIFTH INSERVICE TEST INTERVAL RELIEF REQUEST PR-01 NUCLEAR SERVICES CLOSED COOLING WATER FLOW MEASUREMENT (TAC NO. MF0046)
Dear Mr. Pacilio:
By letter dated November 7,2012 (Agencywide Documents Access and Management System Accession No. ML12313A344), Exelon Generation Company, LLC (Exelon, the licensee) submitted a set of relief requests for U.S. Nuclear Regulatory Commission (NRC) approval. The relief requests were associated with the fifth inservice test interval at Three Mile Island Nuclear Station, Unit 1. This letter applies only to request PR-01, "Relief Request Concerning Nuclear Services Closed Cooling Water Flow Rate Measurement During Group A Tests In Accordance with 10 CFR 50.55a(f)(5)(iii)." PR-01 proposes an alternative test method, as compared to the requirements of American Society of Mechanical Engineers Code for Operation and Maintenance of Nuclear Power Plants, 2004 Edition, with addenda through OMb-2006, ISTB 5121(b). The alternative test method is being proposed, in part, due to the lack of installed individual pump flow instrumentation.
The NRC staff has been reviewing the submittal and has determined that additional information is needed to complete its review. The specific question is found in the enclosed request for additional information (RAI). The question was sent via electronic transmission on March 5, 2013, to Mr. Thomas Loomis, of your staff. The draft question was sent to ensure that it was understandable, the regulatory basis was clear, and to determine if the information was previously docketed. The draft question was discussed in a teleconference with your staff on March 14, 2013. It was agreed that a response to this RAI would be submitted by April 19,2013.
Please contact me at 301-415-2833, if you have any questions.
Sincerely, Pdzc~
Peter Bamford, Project Manager Plant Licensing Branch 1-2 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket No. 50-289
Enclosure:
RAI cc: Distribution via Listserv
REQUEST FOR ADDITIONAL INFORMATION THREE MILE ISLAND NUCLEAR STATION, UNIT 1 FIFTH INSERVICE TEST INTERVAL RELIEF REQUEST PR-01 NUCLEAR SERVICES CLOSED COOLING WATER FLOW MEASUREMENT DOCKET NO. 50-289 By letter dated November 7, 2012 (Agencywide Documents Access and Management System Accession No. ML12313A344), Exelon Generation Company, LLC, submitted three relief requests for U.S. Nuclear Regulatory Commission (NRC) approval (PR-01, PR-02, and VR-02).
These relief requests apply to the fifth inservice test interval at Three Mile Island Nuclear Station, Unit 1. This request for additional information applies only to request PR-01, "Relief Request Concerning Nuclear Services Closed Cooling Water Flow Rate Measurement During Group A Tests In Accordance with 10 CFR 50.55a(f)(5)(iii)." PR-01 proposes an alternative test method, as compared to the requirements of American Society of Mechanical Engineers Code for Operation and Maintenance of Nuclear Power Plants, 2004 Edition, with addenda through OMb 2006, ISTB-5121 (b). The alternative test method is being proposed, in part, due to the lack of installed individual pump flow instrumentation. The NRC staff has been reviewing the submittal and has determined that additional information is needed to complete its review.
Request for Additional Information:
1.) In the attachment to letter dated November 7,2012, Relief Request PR-01, Section 6, "Proposed Alternative and Basis for Use," it is stated that, "Individual pump flow rates will be calculated and compared against individual pump flow rate reference values." Please describe the methodology used to calculate the individual pump flow rates and how the reference values were established.
Enclosure
March 19, 2013 Mr. Michael J. Pacilio President and Chief Nuclear Officer Exelon Nuclear 4300 Winfield Road Warrenville, IL 60555
SUBJECT:
THREE MILE ISLAND NUCLEAR STATION, UNIT 1 - REQUEST FOR ADDITIONAL INFORMATION REGARDING FIFTH INSERVICE TEST INTERVAL RELIEF REQUEST PR-01 NUCLEAR SERVICES CLOSED COOLING WATER FLOW MEASUREMENT (TAC NO. MF0046)
Dear Mr. Pacilio:
By letter dated November 7,2012 (Agencywide Documents Access and Management System Accession No. ML12313A344), Exelon Generation Company, LLC (Exelon, the licensee) submitted a set of relief requests for U.S. Nuclear Regulatory Commission (NRC) approval. The relief requests were associated with the fifth inservice test interval at Three Mile Island Nuclear Station unit 1. This letter applies only to request PR-01, "Relief Request Concerning Nuclear Services Closed Cooling Water Flow Rate Measurement During Group A Tests In Accordance with 10 CFR 50.55a(f)(5)(iii)." PR-01 proposes an alternative test method, as compared to the requirements of American Society of Mechanical Engineers Code for Operation and Maintenance of Nuclear Power Plants, 2004 Edition, with addenda through OMb-2006, ISTB 5121(b). The alternative test method is being proposed, in part, due to the lack of installed individual pump flow instrumentation.
The NRC staff has been reviewing the submittal and has determined that additional information is needed to complete its review. The specific question is found in the enclosed request for additional information (RAI). The question was sent via electronic transmission on March 5, 2013, to Mr. Thomas Loomis, of your staff. The draft question was sent to ensure that it was understandable, the regulatory basis was clear, and to determine if the information was previously docketed. The draft question was discussed in a teleconference with your staff on March 14, 2013. It was agreed that a response to this RAI would be submitted by April 19, 2013.
Please contact me at 301-415-2833, if you have any questions.
Sincerely, Ira!
Peter Bamford, Project Manager Plant Licensing Branch 1-2 Division of Operating Reactor licenSing Office of Nuclear Reactor Regulation Docket No. 50-289
Enclosure:
RAI cc: Distribution via Listserv DISTRIBUTIQN:
RidsNrrPMThreeMilelsland Resource RidsAcrsAcnw MailCTR Resource RidsRgn1MailCenter Resource JHuang, NRR PUBLIC RidsNrrLAABaxter Resource RidsNrrDorlDpr Resource RidsNrrDeEptb Resource LPLI-2 R/F RidsOgcRp Resource RidsNrrDorlLpl1-2 Resouce ADAMS Accession Number' ML13066A244
- via email OFFICE LPL1-21PM LPL1-2/LA*
DE/EPTB/BC*
LPLI-21BC LPL1-2/PM NAME PBamford ABaxter AMcMurtray MKhanna PBamford DATE 03/14/2013 03/18/13 02/28/13 i
03/18/13 03/19/13 OFFICIAL RECORD COPY