ML19323G159
| ML19323G159 | |
| Person / Time | |
|---|---|
| Site: | Pilgrim |
| Issue date: | 05/20/1980 |
| From: | Office of Nuclear Reactor Regulation |
| To: | |
| Shared Package | |
| ML19323G158 | List: |
| References | |
| NUDOCS 8005300476 | |
| Download: ML19323G159 (1) | |
Text
n O
ENGINEERING BRANCH DIVISION OF OPERATING REACTORS SAFETY EVALUATION REPORT FOR N0ZZLE-TC SHELL WELD CRACKING FOR THE PILGRI. NUCLEAR POWER PLANT
1.0 INTRODUCTION
By letter dated March 10, 1978, Boston Edison presented the results of the 1977 UT examination of Pilgrim's recirculation inlet and feedwater nozzle-to-shell welds. This inspection was performed to determine if any cr.ack growth has occurred since the 1976 examination.
2.0 EVALUATION The enclosed Technical Evaluation Report was prepared for us by our contractor, Franklin Research Center, as part of NRC Contract No. NRC-03-79-118.
3.0 CONCLUSION
S Based on our review of the enclosed contractor's Technical Evaluation Report, we agree with their findings :that:
(1)
Feedwater Nozzle N4A showed no reportable indications in the 1977 inspection and, therefore, can be returned to the normal ISI schedule; and (2)
Recirculation Inlet Nozzle N2B showed no significant flaw growth between the 1976 and 1977 inspections and therefore, the flaw size remains within the allowable limits given in Section XI of the ASME Code and is acceptable for continued operation. The Licensee should perform a UT examination of Nczzle N2B at the next refueling outage and submit an inspec-tion program for the continued monitoring of Nozzle N2B, 8085300 y Lsm9
"