ML022100481
| ML022100481 | |
| Person / Time | |
|---|---|
| Site: | Robinson  |
| Issue date: | 07/29/2002 |
| From: | Subbaratnam R NRC/NRR/DLPM/LPD2 |
| To: | Moyer J Carolina Power & Light Co |
| Subbaratnam R, NRR/DLPM, 415-1478 | |
| References | |
| TAC MB5106 | |
| Download: ML022100481 (4) | |
Text
July 29, 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 and identified the need for information specific to the flow-accelerated corrosion components as described in the enclosed RAI.
This RAI was discussed with Mr. Curt Castell and your staff on July 24, 2002, and a mutually agreeable schedule for a response by August 19, 2002, was established.
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
July 29, 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 and identified the need for information specific to the flow-accelerated corrosion components as described in the enclosed RAI.
This RAI was discussed with Mr. Curt Castell and your staff on July 24, 2002, and a mutually agreeable schedule for a response by August 19, 2002, was established.
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 PDII-2 Rdg JHayes BMarcus LLois SSun KManoly KChang MMitchell LLund CLauron MShuaibi LBrown BBonser, RII ACRS ADAMS ACCESS.NO.ML022100481 *No changes to RAI PM:PDII-S2 LA:PDII-S2 EMCB:DE SC:PD II-S2(Acting)
RSubbaratnam EDunnington LLund* KJabbour 7/26/02 7/26/02 7/23/02 7/26/02 Yes/No Yes/No Yes/No Yes/No
REQUEST FOR ADDITIONAL INFORMATION RELATED TO THE 1.7 PERCENT POWER UPRATE WITH RESPECT TO FLOW-ACCELERATED CORROSION H. B. ROBINSON STEAM ELECTRIC PLANT, UNIT NO. 2 DOCKET NO. 50-261 Since the effects of flow-accelerated corrosion (FAC) on degradation of carbon steel components are plant-specific, the values of the parameters affecting FAC, i.e., velocity and temperature changes, must be included. In addition, the corresponding changes in components wear rates due to FAC before and after the power uprate must be provided.
In Section 4.6.5, Flow Accelerated Corrosion Program, on page 93 of Attachment II to the request, the licensee states the following:
An evaluation of plant piping systems identified a number of feedwater heater components that may exhibit susceptibility to FAC under power uprate operating conditions.... In accordance with the provisions of the FAC Program, the projected power uprate operating conditions (i.e., flow and thermodynamic states) for these components are updated in the CHECWORKS model, as appropriate, and results of these models are factored into future pipe inspection and replacement plans.
The staff requests that you provide the predicted change of wear rates calculated by the revised CHECWORKS code for the components most susceptible to flow-accelerated corrosion. Specifically, the staff requests that the information be provided in a detailed table as illustrated below.
System Description % Change Change in in Predicted Predicted Wear Rate Wear Rate, mils / year FW Feedwater (FW) to FW Pump to High Pressure + 0.003 % + 0.02 FW Heater
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 Inspectors 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