ML043620372
| ML043620372 | |
| Person / Time | |
|---|---|
| Site: | Calvert Cliffs  |
| Issue date: | 12/28/2004 |
| From: | Richard Guzman NRC/NRR/DLPM/LPD1 |
| To: | Vanderheyden G Calvert Cliffs |
| Guzman R, NRR/DLPM 415-1030 | |
| References | |
| BL-04-001, TAC MC3466, TAC MC3467 | |
| Download: ML043620372 (4) | |
Text
December 28, 2004 Mr. George Vanderheyden, Vice President Calvert Cliffs Nuclear Power Plant, Inc.
Calvert Cliffs Nuclear Power Plant 1650 Calvert Cliffs Parkway Lusby, MD 20657-4702
SUBJECT:
CALVERT CLIFFS NUCLEAR POWER PLANT, UNIT NOS. 1 AND 2 (CCNPP 1 AND 2) - REQUEST FOR ADDITIONAL INFORMATION RE:
BULLETIN 2004-01(TAC NOS. MC3466 AND MC3467)
Dear Mr. Vanderheyden:
In reviewing your response dated July 27, 2004, to Nuclear Regulatory Commission (NRC)
Bulletin 2004-01, Inspection of Alloy 82/182/600 Materials Used in the Fabrication of Pressurizer Penetrations and Steam Space Piping Connections at Pressurized-Water Reactors, the NRC staff has determined that additional information contained in the enclosure to this letter is needed to complete its review. The NRC staff discussed the issue with your staff on December 21, 2004. As agreed to by your staff, we request you respond within 30 days of the date of this letter.
If you have any questions, please contact me at 301-415-1030.
Sincerely,
/RA/
Richard V. Guzman, Project Manager, Section 1 Project Directorate I Division of Licensing Project Management Office of Nuclear Reactor Regulation Docket Nos. 50-317 and 50-318
Enclosure:
As stated cc w/encl: See next page
ML043620372 OFFICE PDI-1/PM PDI-1/LA EMCB/SC PDI-1/SC NAME RGuzman SLittle SCoffin RLaufer DATE 12/27/04 12/27/04 12/28/04 12/28/04
Enclosure REQUEST FOR ADDITIONAL INFORMATION REGARDING BULLETIN 2004-01, INSPECTION OF ALLOY 82/182/600 MATERIALS USED IN THE FABRICATION OF PRESSURIZER PENETRATIONS AND STEAM SPACE PIPING CONNECTIONS AT PRESSURIZED-WATER REACTORS, CALVERT CLIFFS NUCLEAR POWER PLANT, UNIT NOS. 1 AND 2 DOCKET NOS. 50-317 AND 50-318 1.
Your response to Bulletin 2004-01 Question (1)(c) did not clearly communicate your intentions with respect to establishing a voluntary dialogue with Nuclear Regulatory Commission (NRC) technical staff in the event that circumferential primary water stress corrosion cracking (PWSCC) is identified at any locations covered under the scope of Bulletin 2004-01. The NRC staff addressed this issue, in part, on page 5 of Bulletin 2004-01 stating,... the NRC staff believes that the topic of NDE [nondestructive examination] scope expansion should be discussed with the NRC if circumferential PWSCC is observed in either the pressure boundary or non-pressure boundary portions of any locations covered under the scope of this bulletin to ensure that the licensee has performed an adequate extent-of-condition evaluation.
Please clarify your intentions in this regard. You may wish to consider that other similarly situated licensees have included a statement in their bulletin response like the following:
If circumferential cracking is observed in either the pressure boundary or non-pressure boundary portions of any locations covered under the scope of this bulletin, [we] will develop plans to perform an adequate extent-of-condition evaluation and [we] will discuss those plans with cognizant NRC technical staff prior to restarting the affected unit.
2.
In reference to Bulletin 2004-01 Question 1(b), for all circumferential flaw indications in your pressurizer heater sleeves that have been identified through NDE testing, provide the following additional information:
a.
Describe the flaw configuration by stating whether it was a through-wall (TW) flaw, an inner diameter (ID) originated surface flaw or an outer diameter (OD) originated surface flaw. Provide the length for the TW flaw and the length and depth for the ID and OD originated surface flaws.
b.
Specify the flaw location in the axial direction (the distance and direction with respect to the J-groove weld) and the circumferential direction (the distance in degrees between the crack center and the lowest downhill location).
Calvert Cliffs Nuclear Power Plant, Unit Nos. 1 and 2 cc:
President Calvert County Board of Commissioners 175 Main Street Prince Frederick, MD 20678 James M. Petro, Esquire Counsel Constellation Energy 750 East Pratt Street, 17th floor Baltimore, MD 21202 Jay E. Silberg, Esquire Shaw, Pittman, Potts, and Trowbridge 2300 N Street, NW Washington, DC 20037 Lou Larragoite Calvert Cliffs Nuclear Power Plant 1650 Calvert Cliffs Parkway Lusby, MD 20657-4702 Resident Inspector U.S. Nuclear Regulatory Commission P.O. Box 287 St. Leonard, MD 20685 Mr. R. I. McLean, Administrator Radioecology Environ Impact Prog Department of Natural Resources Nuclear Evaluations 580 Taylor Avenue Tawes State Office Building Annapolis, MD 21401 Regional Administrator, Region I U.S. Nuclear Regulatory Commission 475 Allendale Road King of Prussia, PA 19406 Kristen A. Burger, Esquire Maryland People's Counsel 6 St. Paul Centre Suite 2102 Baltimore, MD 21202-1631 Patricia T. Birnie, Esquire Co-Director Maryland Safe Energy Coalition P.O. Box 33111 Baltimore, MD 21218 Mr. Loren F. Donatell NRC Technical Training Center 5700 Brainerd Road Chattanooga, TN 37411-4017