ML090760122
| ML090760122 | |
| Person / Time | |
|---|---|
| Site: | Vogtle  |
| Issue date: | 03/23/2009 |
| From: | Martin R Plant Licensing Branch II |
| To: | Ajluni M Southern Nuclear Operating Co |
| Martin R, NRR/DORL, 415-1493 | |
| References | |
| TAC MD8876, TAC MD8877, TAC MD8878, TAC MD8879, TAC MD8880, TAC MD8881, TAC MD8882, TAC MD8883, TAC MD8884 | |
| Download: ML090760122 (2) | |
Text
March 23, 2009 Mr. M. J. Ajluni Manager, Nuclear Licensing Inverness Center Parkway Post Office Box 1295 Birmingham AL 35201
SUBJECT:
VOGTLE ELECTRIC GENERATING PLANT, UNIT NOS. 1 AND 2, REQUEST FOR ADDITIONAL INFORMATION REGARDING REQUESTS FOR RELIEF (TAC NOS. MD8876 THROUGH MD8884)
Dear Mr. Ajluni:
By letter to the U.S. Nuclear Regulatory Commission (NRC) dated May 30, 2008, Southern Nuclear Operating Company, Inc. (SNC), submitted requests for relief for the Vogtle Electric Generating Plant, Units 1 and 2, for the Second 10-Year Interval Inservice Inspection Program (ISI). The NRC staff has reviewed your application and finds that additional information is needed on the nature of the limitations to the examination coverage for five welds. These include two welds described in Relief Request 44, ID Nos. 11201-005-8 and 11201-009-1 and three welds described in Relief Request 47, ID Nos. 11204-023-15-RI, 21204-023-15R-RI and 21204-023-16R-RI.
For each of these welds SNC's submittal summarizes limited examinations performed during the second 10-year ISI interval, and provides calculated coverage for each component. However, in order to show the impracticality of examining 100 percent of the American Society of Mechanical Engineers (ASME) Code required volumes, SNC's submittal provides only "typical" figures that do not describe or depict the specific limitations for the welds listed above.
The NRC staff requests that SNC submit detailed and specific information to support the basis for each limited examination on the above mentioned welds and therefore, demonstrate impracticality. Include descriptions (written and/or sketches, as necessary) of the interferences to applied nondestructive examination (NDE) techniques. As applicable, provide a description of NDE equipment, showing accessibility limitations, and discussion of whether alternative methods or advanced technologies could be employed to maximize ASME Code coverage.
Please provide a response within thirty (30) days of the date of this letter.
Sincerely,
/RA/
Robert E. Martin, Senior Project Manager Plant Licensing Branch II-1 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket Nos. 50-424 and 50-425 cc: Distribution via ListServ
ML090760122 OFFICE NRR/LPL2-1/PM NRR/LPL2-1/LA NRR/CPNB/BC NRR/LPL2-1/BC NAME RMartin:
SRohrer TChan MWong DATE 03/23/09 03/17/09 03/23/09 03/23/09