ML022270323
| ML022270323 | |
| Person / Time | |
|---|---|
| Site: | Salem  |
| Issue date: | 08/07/2002 |
| From: | Salamon G Public Service Enterprise Group |
| To: | Document Control Desk, Office of Nuclear Reactor Regulation |
| References | |
| LRN-02-0272 | |
| Download: ML022270323 (3) | |
Text
PSEG Nuclear LLC P.O. Box 236, Hancocks Bridge, New Jersey 08038-0236 AuG 072002 0 PSEG Nud ear 11,C LRN-02-0272 U. S. Nuclear Regulatory Commission Document Control Desk Washington, DC 20555 Gentlemen:
REFUELING WATER STORAGE TANK SALEM GENERATING STATION UNIT I DOCKET NO. 50-272 The purpose of this letter is to confirm our discussions with NRC staff concerning PSEG Nuclear's continued service and future plans for the Salem 1 Refueling Water Storage Tank (RWST). These discussions took place during a telecon with Mr. Robert Fretz, NRC Project Manager for Salem on July 24, 2002.
There were two specific issues for which the Staff requested confirmation, specifically; the current on going actions for monitoring of the leakage and the plans to repair the RWST, which is scheduled for the fall 2002 refueling outage (1R12).
As noted during our discussions, all externally accessible welds of the RWST, in the region of the reinforcing pad, have been examined using liquid penetrant (PT) examination methodology and no relevant indications have been detected.
These PT examinations have included the nozzle to shell weld and the reinforcing pad to shell welds.
Additionally, there is a daily inspection of a leakage collection bottle which has been attached at the threaded tell tale hole, located in the reinforcing pad surrounding the suction outlet nozzle of the RWST. The daily inspections are performed by operations personnel and are recorded in the primary operator reading sheet. This daily monitoring is part of the Corrective Action Program (CAP) and is documented in Condition Report number 70017741, operation 20.
Since the initiation of this inspection there has been essentially an un measurable quantity/volume of leakage. The daily inspections will continue until the 1 R1 2 refueling outage or until the leakage condition increases to point of exceeding the acceptance limit of 1 GPM.
c ol 95-2168 REV. 7/99
Document Control Desk 2
AUG 0 7 Z002 LRN-02-0272 Upon entering 1 RI 2 refueling outage, corrective maintenance order (60019962) will be implemented for the repair of the RWST. The repair ;lan involves draining the RWST, performing rnon-destructive examinations from the inside of the RWST, and weld repairing, using qualifcd welding procedures and personnel, if any flaw/indication is detected a;%- then subsequently re-examined using the PT and or BT.
Inspections will be made using either liquid penetrant examination cr vacuum box bubble (BT) testing, to examine those areas oT welds located behind the reinforcing pad that are currently inacces3ible from the OD. The PT and or BT will be used to attempt to p~npoint the actual source of the leakage site.
If the examination(s) do not reveal any specific flaw/indication, then all weld(s) creas that are located behind the reinfcrcing pad will be surface prepared (e.g.,
ground) for welding and subsequently repair welded. Upon completion of the refueling outage, the RWST will be refilled and a visual examination (VT-2) of the tell tale hole as well as all of the exterior welds in the region of the nozzle and reinforcing pad will be made. This VT-2 will be conducted to detect any evidence of leakage, while the RWST is pressurized to the normal static head pressure conditions.
If you have any questions or comments on this submittal, please contact John Nagle at (856) 339-3171.
Sincerely, Gabor Salamon FIuclear Safety and Licensing Manager A
Document Control Desk 3
LRI`1-02-0272 C
Mr. H. Miller, Administrator - Region I U. S. Nuclear Regulatory Commission 475 Allendale Road King of Prussia, PA 19406 Mr. R. Fretz Licensing Project Manager - Salem U. S. Nuclear Regulatory Commission One Whita Flint North, Mail Stop 8B2 11555 Rockville Pike Rockville, MD 20852 Mr. Ray Lorson USNRC Senior Resident Inspector - Salem (X24)
Mr. K Tosch, Maneger IV Bureau of Nuclear Engineering P. O. Box 415 Trenton, NJ 08625 AUG 0 7 2002