ML20071B807
| ML20071B807 | |
| Person / Time | |
|---|---|
| Site: | Brunswick  |
| Issue date: | 02/07/1983 |
| From: | Howe P CAROLINA POWER & LIGHT CO. |
| To: | James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| References | |
| REF-SSINS-6820 BSEP-83-281, IEB-82-03, IEB-82-3, NUDOCS 8303010159 | |
| Download: ML20071B807 (3) | |
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Brunswick Steam Electric Plant P. O. Box 10429 Southport, NC 28461-0429 February 7, 1983 FILE: B09-13510A SERIAL: BSEP/83-281 Mr. James P. O'Reilly, Director U. S. Nuclear Regulatory Commission Region II, Suite 3100 101 Marietta Street N.W.
Atlanta, GA 30303 BRUNSWICK STEAM ELECTRIC PLANT, UNIT NOS. 1 AND 2 DOCKET NOS. 50-325 AND 50-324 LICENSE NOS. DPR-71 AND DPR-62 SUPPLEMENTAL RESPONSE TO IE BULLETIN 82-03 (Revision 1)
Dear Mr. O'Reilly:
In our Jetter of December 16, 1982, Carolina Power & Light Company provided requested information on the Recirculation System IGSCC inspection program for Brunswick Unit No. 1.
Due to concerns expressed during subsequent inspections by Region II inspectors and program changes initiated by CP&L, the original response is hereby supplemented.
A review of the December 16, 1982, submittal and its support documentation determined that the IGSCC susceptibility study performed for BSEP by General Electric (GE) contained some errors due to nomenclature problems between the two BSEP units. GE had referenced the units in its report as CP&L Unit Nos. I and 2, as they were designated under the original NSSS contract; however, CP&L Unit No. 1 is actually BSEP Unit No. 2 and CP&L Unit No. 2 is BSEP Unit No. 1.
The corrected table of stress rule index numbers, carbon content valves, and susceptibility rankings is enclosed.
None of the stress rule index numbers changed, and the susceptibility ranks changed only to reflect that GE now considers "1.1" to be the threshold valve for a susceptible joint.
To clarify the basis for selection and the applicable inspection requirements for the Unit No. I weld sample, a listing of the recirculation system and Residual Heat Removal System welds that are being tested is included in the enclosed table. This listing includes two additional welds which were not contained in the original response, one of which is the corresponding weld on loop B which had indications on loop A, and the other because its location in a stagnant area makes it equivalent to an end cap.
, ~8303Di'01 FB30207
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PDR ADOCK 05000324
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RMr. O'Reilly. February 7, 1983 In addition to the above changes, the applicable inspection procedure has been revised. The revised procedure for manual inspections, Southwest Research
' Institute Procedure 600-31, Revision 9, Deviation 3, requires the recording of ultrasonic reflectors producing a response greater than 50 percent of the reference level. All-reflectors.(regardless of signal amplitude)-not readily attributable to geometry by the examiner shall be recorded and investigated by a Level _III examiner to the extent necessary. Automated inspecticns being performed ~ to fulfill NUREG-0313, Revision 1,.will be performed using Southwest Research Institute Procedure 700-5, Revision 9, Deviation 4.
This procedure employs the same scanning techniques as the manual procedure and records any reflectors not readily attributable to geometry.
We understand that Revision 2 of'the IE Bulletin 82-03 is about to be issued.
Any further changes necessitated by that revision.will be addressed in future correspondence.
Very truly yours,
.N' P. W. Howe, Vice President Brunswick Nuclear Project RMP/dj/LETDJ4 Enclosures cc:
Mr. D. O. Myers Mr. D. B. Vassallo NRC Document Control Desk P. W. Howe, having been first duly sworn, did dispose and say that the information contained herein is true and correct to his own personal knowledge or based upon information and belief.
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My commission expires:
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APPLICAiLE WELD NUMBER-LINE DESCRIPTION BASIS FOR SELECTION
' INSPECTION REQUIREMENTS B32-RECIRC-4"-A-1 Di scha rge Valve Bypass Occurrence of Cracking at Other BWRs '
IEB 82-03, Rev. 1 d
B32-RECIRC-4"-A-10 Discharge Valve Bypass Occurrence of Cracking at Other BWRs IEB 82-03,'Rev. 1 B32-REClRC-12"-AR-C-2 Discharge Riser Occurrence of Cracking at Other BWRs IEB 82-03, Rev. 1 B32-RECIRC-12"-AR-C-3 Discharge Riser Occurrence of Cracking at Other BWRs
. IEB 82-03, Rev. 1 lEB 92-03, Rev. 1 B32-RECIRC-22"-AM-5BC-8 Discha rge lleader End. Sweepolet Occurrence or Cracking at Other BWRs B32-REclRC-22"-AM-6 Discha rge Header End Cap Occurrence or Cracking at' Other BWRs IEB 82-03, Rev. 1 832-RECIRC-22"-AM-3*
Di scha rge Header. Cross-tie Stagnant Location -
-lEB 82-03, Rev. B32-RECIRC-28"-A-10 Suction Line
. Susceptibility Rank 1 IEB'82-03, Rev. 1 s
B32-REC 1hC-28"-A-15 Discha rge Riser Susceptibi1ity Rank 1 IEB 82-03, Rev. 1 E11-RHR-24"-A-DISCil-12 Bimetallic Weld Bimetallic Weld IEB 82-03, Rev.
1-E11-RHR-20"-A-SUCT-2 Bimetallic Weld Bimetallic Wold 832-RECIRC-4"-B-1 Discharge Valve Bypass occurrence of Cracking at Other'BWRs
.lEB 82-03, Rev.
1' IEB 82-03, Rev. 1 832-RECIRC-4"-B-10 Discha rge Va lve Bypass occurrence or Cracking at Other BWRs IEB 82-03,.Rev. 1 B32-RECIRC-12"-BR-H-i Discharge Riser Susceptibility Rank 1
- lEB 82-03, Rev. 1-B32-RECIRC-22"-BM-1 Discharge lleader End Cap Occurrence ' or Cracking at Other BWRs IEB 82-03, Rev. 1 B32-RECIRC-22"-BM-1BC-A Discharge 'lleader End Sweepolet Occurrence of Cracking at Other BWRs IEB 82-03, Rev. 1l 032-RECIRC-28"-B-15*
Discha rge Line Susceptibility Rank 1
- lEB 82-03, Rev. 1 E11-RHR-24"-B-13 Bimetallic Wold Bimetallic Wold IEB 82-03, Rev. 1 B32-RECIRC-12"-AR-A-4 Discha rge Line Susceptibility Rank 1 NUREC 0313, Rev. 1 B32-RECIRC-12"-AR-B-4 Discharge Line Susceptibility Rank 1.
NUREC 0313, Rev.
1-B32-RECIRC-12"-AR-C-4 Discha rge Line Susceptibility Rank 1 NUREC 0313, Rev. 1 832-RECIRC-12"-AR-D-4 Discha rge Line Susceptibility Rank 1
' NUREG 0313, Rev. 1 B32-RECIRC-12"-AR-E-4 Discha rge Line Susceptibility Rank 1 NUREG 0313, Rev. 1 B32-RECIRC-12"-AR-F-4 Discharge Line Susceptibility Rank 1 NUREC 0313, Rev. 1 B32-RECIRC-12"-AR-C-4 Discharge Line Susceptibility Rank 1 NUREC 0313, Rev._1 032-RECIRC-12"-AR-il-4 Discha rge Line Susceptibility Rank 1
' NUREG 0313, Rev.'1 NUREC 0313, Rev. 1 B32-REClRC-12"-AR-J-4 Discha rge Line Susceptibility Rank 1 B32-RECIRC-12"-AR-K-4 Discha rge Line Susceptibility Rank 1 NUREG 0313, Rev. 1
- Not included in original response.
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