ML20012A169
| ML20012A169 | |
| Person / Time | |
|---|---|
| Site: | Brunswick  |
| Issue date: | 02/23/1990 |
| From: | Loflin L CAROLINA POWER & LIGHT CO. |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| Shared Package | |
| ML20012A170 | List: |
| References | |
| IEB-80-13, NLS-90-048, NLS-90-48, NUDOCS 9003080435 | |
| Download: ML20012A169 (2) | |
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Carolina Power & Light Company SERIAL:' NLS-90-048 FEB 2 31090 United States Nuclear Regulatory Commission ATTENTION: Document Control Desk Washington,'DC' 20555 BRUNSWICK STEAM ELECTRIC PLANT, UNIT NO. 2 DOCKET NO. 50-324/ LICENSE NO. DPR-62 RESPONSE TO IE BULLETIN 80-13 EXAMINATION OF CORE SPRAY SYSTEM SPARGERS Gentlemen:
'in accordance with IE Bulletin 80-13, a visual inspection (Periodic Test 90.1)'
of the core spray spargers and in-vessel core spray piping of the Brunswick
' Steam Electric Plant Unit 2=(BSEP-2) was performed during Reload 8.
The crack 11ndication previously identified on the north core spray.line has indicated 4
. growth.
. An evaluation of, the. safety significance of the crack has been performed.
.This. evaluation is provided in Attachment 1.
The' technical basis to support
- the continued structural integrity of the core spray line for all normal and injection conditions is provided.
A' discussion of the-possible consequences of potential loose pieces from a cracked pipe and the consequences of a postuinted loss of coolant accident (LOCA) with a crack in the' core spray-piping are discussed.
The structural analysis concludes that the integrity of the core spray piping will be_ maintained for all conditions of. operation during the next operating
' cycle.
The loose piece analysis shows that the probability of unacceptable control rod interference due to loose parts has not changed from the previous
' evaluation.
z Based on the updated analysis, CP&L believes that BSEP-2 can continue to
' safely' operate with this crack during the next fuel cycle and that no operational changes'or restrictions are required.
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9003080435 900223 PDR ADOCK 05000324
/
O PNU f
'l 411 Fayetteville Street
- P. O. Box 1551
- Raleigh. N C. 27602
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- Document Control = Desk
-NLS-90-04B / Page 2 Please refer any questions regarding this submittal to Mr. M. R. Oates at (919) 546-6063.
Yours very truly,
/0 L.
flin Man er Nuclear icensing r.
DBB/eco (620ECC)
Enclosure oc:
Mr.'S..D.:Ebneter Mr. W. H. Ruland Mr. E. G.'Tourigny
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