ML19325E259
| ML19325E259 | |
| Person / Time | |
|---|---|
| Site: | Brunswick  |
| Issue date: | 10/27/1989 |
| From: | Watson R CAROLINA POWER & LIGHT CO. |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| GL-89-16, NLS-89-291, NUDOCS 8911030113 | |
| Download: ML19325E259 (1) | |
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- Meteeph. N. C. !?t08 00T 2 71989 SERIAL; NLS 89 291 R. A. WATSON tenter Wee Pseelseen muser eenwesen United States Nuclear Regulatory Commission ATTENTION: Document Control Desk Washington, DC 20555 BRUNSWICK STEAM ELECTRIC PLANT, UNIT NOS.1 AND 2 DOCKET NOS. 50 325 & 50 324/ LICENSE NOS. DPR 71 & DPR 62 RESPONSE TO CENERIC LETTER 8916 INSTAL 1ATION OF A HARDENED WETWELL VENT Centlemen:
On September 1,1989, the NRC issued Generic Letter 8916 to inform the owners of BWR plants with Mark I containments of the NRC program for disposition af the issues related to the Mark I Containment Performance Improvement Program.
.This letter encouraged utilities to voluntarily install a hardened vent under 10CFR50.59.
Our review of SECY 89 017 indicates that the primary benefit of the hardened vent is the reduction of risk associated with the TW (loss of decay heat removal) sequence. Therefore, it is the intention of Carolina Power & Light Company (CP&L) to install a hardened vent to reduce the risk of the TW sequence at the Brunswick Steam Electric Plant (BSEP).
CP&L will be working with the BWR Owners' Group to develop generic design criteria for the hardened vent.
It is anticipated that the design criterie vill be available for NRC
, review by April 30, 1990.
Specific design details will be developed as CP&L co.mpletes the appropriate portions of the IPE for BSEP and studies the possibility of systems interaction effects between the vent and existing plant design, he hardened vent will be installed in BSEP by either January 1, 1993, or during the second refueling outage from the date of this letter, whichever is later.
It is the belief of CP&L that the risk of the TW sequence is already low.
The installation of the hardened vent will further reduce risk of thie sequence and make a significant contribution to closing the NRC's Mark 1 Containment Performance Improvement Program.
If you should have any questions, please contact Mr. Stephen D. Floyd at (919) 546 6901.
Yours very truly, h
f hy)
R. A. Watson RAW / MAT cc:
Mr. S. D. Ebneter Mr. W. H. Ruland Mr. L. H.#thornburg hj i
Mr. E. C. Tourigny I ',