ML20212N882
| ML20212N882 | |
| Person / Time | |
|---|---|
| Site: | Brunswick  |
| Issue date: | 06/03/1986 |
| From: | Cutter A CAROLINA POWER & LIGHT CO. |
| To: | Grace J NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| References | |
| 3691MAT, IEB-86-001, IEB-86-1, NLS-86-208, NUDOCS 8609020020 | |
| Download: ML20212N882 (1) | |
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Carolina Power a Light Company JUN SERIAL: NLS-86-208 3 p:20
- JQ 6 AJ Dr. J. Nelson Grace, Regional Administrator United States Nuclear Regulatory Gommission Suite 2900 101 Marietta Street, NW Atlanta, GA 30303 BRUNSWICK STEAM ELECTRIC PLANT, UNIT NOS.1 AND 2 DOCKET NOS.750-325 & 50-324/ LICENSE NOS. DPR-71 & DPR-62 b RESPONSE TO IE BULLETIN 86-01
Dear Dr. Grace:
On May 27,1986, Carolina Power & Light Company received IE Bulletin 86-01, Minimum Flow Logic Problems That Could Disable RHR Pumps. The bulletin identified a potential problem with the minimum flow logic such that a single failure could disable all residual heat removal (RHR) pumps. Licensees were requested to determine if a similar problem exists at their facility and report these findings to the NRC within seven days.
Carolina Power & Light Company has reviewed the applicable plant drawings and documentation and determined that Brunswick Unit Nos. I and 2 are not susceptible to this problem. The results of the review indicate that the RHR pump minimum flow bypass valve logic is independent in each RHR system loop. Therefore, no single instrument failure will result in the loss of the four RHR pumps. As such, no further action is required in response to IE Bulletin 86-01.
Please refer questions regarding this matter to Mr. Sherwood R. Zimmerman at (919) 836-6242.
Youp very t y,
(
. B. Cutter - Vic resident Nuclear Engineering & Licensing ABC/ MAT /ccj (3691 MAT) cc:
Mr. Dan Muller (NRC)
Mr. W. H. Ruland (NRC-BNP)
Mr. E. Sylvester (NRC)
Document Control Desk (NRC)
A. B. Cutter, having been first duly sworn, did depose and say that the information contained herein is true and correct to the best of his information, knowledge and belief; and the sources of his information are officers, employees, contractors, and agents of Carolina Power & Light Company.
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