ML20034B791
| ML20034B791 | |
| Person / Time | |
|---|---|
| Site: | Brunswick  |
| Issue date: | 04/24/1990 |
| From: | Loflin L CAROLINA POWER & LIGHT CO. |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| IEB-90-002, IEB-90-2, NLS-90-090, NLS-90-90, NUDOCS 9005010017 | |
| Download: ML20034B791 (1) | |
Text
y CD&L Carolina Power & Light Con pony APR 2 41990 l
SERIAL: NLS 90 090 l
f United States Nuclear Regulatory Commission ATTENTION: Document Control Desk i
Washington, DC 20555 l
BRUNSWICK STEAM ELECTRIC PIANT, UNIT NOS.1 AND 2 DOCKET NOS. 50 325 & $0 324/ LICENSE NOS. DPR 71 & DPR 62 RESPONSE TO NRC BULLETIN NO. 90 02 1hSS OF THERMAL MARCIN CAUSED BY CHANNEL BOX BOW l
Centlemen:
l On March 20, 1990, the NRC issued Bulletin No. 90 02, " Loss of Thermal Margin Caused by Channel Box Bow."
The bulletin requested that within 30 days of receipt all BWR licensees that currently use channel boxes for a second bundle lifetime verify that current CPR technical specification operating and safety limits are met.
The bulletin also requested that BVRs that currently use channel boxes for a second bundle lifetime (1) advise the NRC of the number of such channel boxes and their disposition in the core and (2) describe the methods and the associated data base used to account for the effects of t
channel box bow during second bundle lifetime use of channel boxes to ensure conformance with CPR technical specification operating and safety limits.
The Brunswick Steam Electric Plant, Units 1 and 2 currently do not use channel boxes for a second bundle lifetime. Therefore, the issues raised in Pulletin 90 02 are not currently a concern for the Brunswick Plant.
Although not required by tha bulletin, this response is being provided to assist the NRC in closcout of this bulletin for the Brunswick Plant.
Please refer any questions regarding this submittal to Mr. M. R. Oates at (919) b46 6063.
Yours very truly, i
Leonard I Loflin l
Man ger j
Nuclear Lic nsing Section l
WRM/wrm
(\\cor\\chanbow) cc:
Mr. S. D. Ebneter Mr. N. B. Le Mr. W. H. Ruland 1
)
411 Fayetteville Street
- P. O Don 1551
- Slaieign. N C. 27602 I
9005020017 900424 PDR ADOCK 05000324 O
i PDC
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