ML021980197

Request for Additional Information on Amendment Application Regarding Technical Specification Changes to Increase Authorized Power Level

ML021980197
Person / Time
Site:	Robinson
Issue date:	07/17/2002
From:	Subbaratnam R NRC/NRR/DLPM/LPD2
To:	Moyer J Carolina Power & Light Co
Subbaratnam R, NRR/DLPM, 415-1478
References
TAC MB5106
Download: ML021980197 (5)

Text

July 17, 2002 Mr. J. W. Moyer, Vice President Carolina Power & Light Company H. B. Robinson Steam Electric Plant, Unit No. 2 3581 West Entrance Road Hartsville, South Carolina 29550

SUBJECT:

H. B. ROBINSON STEAM ELECTRIC PLANT, UNIT NO. 2 - REQUEST FOR ADDITIONAL INFORMATION (RAI) ON AMENDMENT APPLICATION REGARDING TECHNICAL SPECIFICATION CHANGES TO INCREASE AUTHORIZED POWER LEVEL (TAC NO. MB5106)

Dear Mr. Moyer:

By letter dated May 16, 2002, you submitted an amendment application regarding technical specification changes to increase the authorized power level for the H. B. Robinson Steam Electric Plant, Unit No. 2. The NRC staff reviewed the information that you provided in the subject amendment application, needed additional information to complete our review, and sent you an RAI by letter dated June 26, 2002. Upon further review, our Mechanical and Civil Engineering staff identified the need for further information specific to the Mechanical and Civil items in your subject application, as described in the enclosed RAI.

This request for information was discussed with Mr. Curt Castell and your staff on July 12, 2002, and a mutually agreeable schedule for a response by July 22, 2002, was established for your comprehensive response to both RAIs. We regret that we did not foresee this additional information need earlier.

If you have any questions, please contact me on (301) 415 1478.

Sincerely,

/RA/

Ram Subbaratnam, Project Manager, Section 2 Project Directorate II Division of Licensing Project Management Office of Nuclear Reactor Regulation Docket No. 50-261

Enclosure:

RAI cc w/encl: See next page

Mr. J. W. Moyer, Vice President July 17, 2002 Carolina Power & Light Company H. B. Robinson Steam Electric Plant, Unit No. 2 3581 West Entrance Road Hartsville, South Carolina 29550

SUBJECT:

H. B. ROBINSON STEAM ELECTRIC PLANT, UNIT NO. 2 - REQUEST FOR ADDITIONAL INFORMATION (RAI) ON AMENDMENT APPLICATION REGARDING TECHNICAL SPECIFICATION CHANGES TO INCREASE AUTHORIZED POWER LEVEL (TAC NO. MB5106)

Dear Mr. Moyer:

By letter dated May 16, 2002, you submitted an amendment application regarding technical specification changes to increase the authorized power level for the H. B. Robinson Steam Electric Plant, Unit No. 2. The NRC staff reviewed the information that you provided in the subject amendment application, needed additional information to complete our review, and sent you an RAI by letter dated June 26, 2002. Upon further review, our Mechanical and Civil Engineering staff identified the need for further information specific to the Mechanical and Civil items in your subject application, as described in the enclosed RAI.

This request for information was discussed with Mr. Curt Castell and your staff on July 12, 2002, and a mutually agreeable schedule for a response by July 22, 2002, was established for your comprehensive response to both RAIs. We regret that we did not foresee this additional information need earlier.

If you have any questions, please contact me on (301) 415 1478.

Sincerely,

/RA/

Ram Subbaratnam, Project Manager, Section 2 Project Directorate II Division of Licensing Project Management Office of Nuclear Reactor Regulation Docket No. 50-261

Enclosure:

RAI cc w/encl: See next page DISTRIBUTION:

PUBLIC KJabbour RSubbaratnam EDunnington OGC ACRS LBrown PDII-2 Rdg JHayes BMarcus LLois SSun BBonser, RII MShuaibi KManoly KChang MMitchell FILENAME - C:\MYFILES\Copies\MB5106.RAI1.wpd PM:PDII-S2 LA:PDII-S2 EMCB:DE SC:PD II-S2 RSubbaratnam EDunnington KManoly/SCoffin BMozafari for KJabbour 7/12/02 7/15/02 7/9/02 and 7/11/02 7/15/02 Yes/No Yes/No Yes/No Yes/No OFFICIAL RECORD COPY

REQUEST FOR ADDITIONAL INFORMATION H. B. ROBINSON STEAM ELECTRIC PLANT, UNIT NO. 2 REQUEST FOR TECHNICAL SPECIFICATIONS CHANGES TO INCREASE AUTHORIZED REACTOR CORE POWER LEVEL TAC NO. MB5106 Carolina Power & Light Company is requested to provide the following additional information, relating to Attachment II to application RNP-RA/02-0066, in support of the staffs review of the May 16, 2002, request for Technical Specifications changes to increase the authorized reactor thermal power level from 2300 megawatts to 2339 megawatts for H. B. Robinson Steam Electric Plant, Unit No. 2.

1. Section 3.6.2 provides an assessment of reactor coolant system (RCS) components for the uprated power conditions. The reactor pressure vessel was not explicitly addressed.

The licensee is requested to provide information (i.e., existing minimum margin in stress and cumulative usage factor) to show that the existing margins for the reactor vessel will accommodate the RCS temperature change or that the current design/operating temperature range is bounding for the 1.7% uprate condition.

2. Section 3.6.2.1 states that, the values for Thot and Tcold under uprated power conditions are bounded by the revised RCS design condition values as shown in Table 3.6-1."

Temperature data in Table 3.6-1 indicates that the Thot for the revised RCS design condition (604.6°F) is slightly higher than that of the uprated operating conditions (604.1°F or 604.5°F). However, the Tcold for the revised RCS design conditions (546.1°F) is slightly lower than that of the uprated operating conditions (547.6°F or 547.3°F). On the basis of the cited temperatures from Table 3-6.1, provide your justification for the above quoted statement.

3. Section 3.6.2.8 concluded that primary water stress-corrosion cracking of the control rod drive mechanism (CRDM) nozzles will not be impacted by the slight increase in RCS Thot resulting from the power uprate. It further stated that an inspection of the CRDM nozzles is planned for the next refueling outage (RO-21) scheduled to begin in October 2002.

Please provide your clarification regarding the significance of the planned inspection as it relates to its impact on the Technical Specification amendment request for power uprate.

4. Per the guidance provided in NRC Regulatory Issue Summary 2002-03: Guidance on the Content of Measurement Uncertainty Recapture Power Uprate Applications, Attachment 1,Section IV. C., provide a response that addresses any effects of the proposed power uprate on:

a) the pressurized thermal shock evaluation for the H. B. Robinson reactor pressure vessel materials, which should demonstrate continued compliance with the requirements in Title 10 of the Code of Federal Regulations Section 50.61, and b) the upper shelf energy evaluation for the H. B. Robinson reactor pressure vessel materials, which should demonstrate continued compliance with the requirements in Title 10 of the Code of Federal Regulations Part 50, Appendix G.

If the proposed power uprate has no effect on these evaluations, please state so in your response.

Mr. J. W. Moyer H. B. Robinson Steam Electric Carolina Power & Light Company Plant, Unit No. 2 cc:

Mr. William D. Johnson Mr. Mel Fry, Director Vice President and Corporate Secretary N.C. Department of Environment Carolina Power & Light Company and Natural Resources Post Office Box 1551 Division of Radiation Protection Raleigh, North Carolina 27602 3825 Barrett Dr.

Raleigh, North Carolina 27609-7721 Ms. Karen E. Long Assistant Attorney General Mr. Robert P. Gruber State of North Carolina Executive Director Post Office Box 629 Public Staff - NCUC Raleigh, North Carolina 27602 4326 Mail Service Center Raleigh, North Carolina 27699-4326 U.S. Nuclear Regulatory Commission Resident Inspector's Office Mr. Virgil R. Autry, Director H. B. Robinson Steam Electric Plant South Carolina Department of Health 2112 Old Camden Road Bureau of Land & Waste Management Hartsville, South Carolina 29550 Division of Radioactive Waste Management 2600 Bull Street Mr. T. P. Cleary Columbia, South Carolina 29201 Plant General Manager Carolina Power & Light Company Mr. Terry C. Morton H. B. Robinson Steam Electric Plant, Unit No. 2 Manager 3581 West Entrance Road Performance Evaluation and Hartsville, SC 29550 Regulatory Affairs CPB 7 Carolina Power & Light Company Mr. T. D. Walt Post Office Box 1551 Director of Site Operations Raleigh, North Carolina 27602-1551 Carolina Power & Light Company H. B. Robinson Steam Electric Plant, Unit No. 2 Mr. John H. ONeill, Jr.

3581 West Entrance Road Shaw, Pittman, Potts & Trowbridge Hartsville, South Carolina 29550 2300 N Street, NW.

Washington, DC 20037-1128 Public Service Commission State of South Carolina Post Office Drawer 11649 Columbia, South Carolina 29211 Mr. B. L. Fletcher III Manager - Regulatory Affairs Carolina Power & Light Company Supervisor, Licensing/Regulatory Programs H. B. Robinson Steam Electric Plant, Carolina Power & Light Company Unit No. 2 H. B. Robinson Steam Electric Plant, 3581 West Entrance Road Unit No. 2 Hartsville, South Carolina 29550-0790 3581 West Entrance Road Hartsville, South Carolina 29550