ML20211A371
| ML20211A371 | |
| Person / Time | |
|---|---|
| Issue date: | 09/12/1997 |
| From: | Birmingham J NRC (Affiliation Not Assigned) |
| To: | Matthews D NRC (Affiliation Not Assigned) |
| References | |
| PROJECT-693 GL-83-28, NUDOCS 9709240235 | |
| Download: ML20211A371 (3) | |
Text
_______ _____ _ -
l S:ptember 12, 1997 l
MEMORANDUM T0:
David B. Matthews, Chief
(
Generic Issues and Environmental Projects Branch Division of Reactor Program Management Office of Nuclear Reactor Regulation FROM:
Joseph L. Birmingham, Project Manager Original Signed By:
Generic Issues and Environmental Projects Branch Division of Reactor Program Management Office of Nuclear Reactor Regulation
SUBJECT:
SUMMARY
OF SEPTEMBER 10, 1997 TELECON WITH B&W OWNERS GROUP (B&WOG) ON TOPICAL BAW-10167 SUPPLEMENT 3 On Se)tember 10, 1997. U.S. Nuclear Regulatory Commission staff held a teleplone conference with representatives of the B&W 041ers Group to discuss the status of the NRC review of BAW-101P, " Justification for Increasing the Reactor Trip System On-Line Test Intervals." The staff noted that, as documented in the topical, the reliability of reactor trip breakers (RTBs) had improved since the issuance of Generic Letter 83-28, " Required Actions Based on Generic Implications of Salem ATWS Events." The staff then discussed the technical basis provided in the topical for increasing the on-line sutveillance test interval from a one-month to a six-month interval and indicated that it appeared to provide adequate suport for a change to the surveillance interval.
However, as presented in t7e topical, it did not appear to support the requested change to a six-month interval.
The staff noted that its review of the probabilistic safety assessment (PSA) presented in the topical found that the PSA was supportive of a change to the surveillance interval. The staff also noted that surveillance intervals of up to three months had been approved for this type breaker at some plants.
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September 12,:1997 MEMORANDUM T0:
David B. Matthews. Chief Generic Issues and Environmental Projects Branch Division of Reactor Program Management Office of Nuclear Reactor Regulation FROM:
Joseph.L. Birmingham Project Manager (
Generic Issues and Environmental Projects Branch Division of Reactor Program Management Office of Nuclear Reactor Regulation
SUBJECT:
SUMMARY
OF SEPTEMBER 10, 1997 TELECON WITH B&W OWNERS GROUP (B&WOG) ON TOPICAL BAW-10167. SUPPLEMENT 3 On Se)tember 10. 1997, U.c. Nuclear Regulatory Commission staff held a:
teleplone conference wie representatives of the B&W Owners Group to discuss the status of the NRC review of BAW 10167. " Justification for Increasing the Reactor Trip System On-Line Test Intervals." The staff noted that, as-documented in the topical, the reliability of reactor trip breakers (RTBs) had improved since the issuance of Generic Letter 83 28 " Required Actions Based on Generic Implications of Salem AT14S Events." The' staff then discussed the technical basis provided in the topical for increasing the on-line surveillance. test interval from a one-month to a six-month interval and indicated that it appeared to provide adequate sup] ort for a change to the surveillance interval.
However, as presented in t1e topical.-it did not appear to support the requested change to a six-month interval.
The staff.
noted that its review of the probabilistic safety assessment (PSA) presented in the topical found that the PSA was supportive of a change to the surveillance interval.
The staff also noted that surveillance intervals of up to three months had been approved for this type breaker at some plants.
The Owners Group representatives indicated that they would present the
-information discussed by NRC to the rest of the Owners Group and would -inform the NRC of any actions planned by the Owners Group in response to the information.
Project No. 693 cc: See next page d
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i B&W Owners Group.
Project No. 693
- Mr. Robert W. Keaten, Chairman Mr. W. W. Foster, Chairman B&WOG Executive Committee B&WOG Steering Committee Vice President & Director of Director of Safety Assurance Technical Functions Duke Power Company GPU Nuclear Cor) oration Oconee Nuclear Station One Upper Pond load PO Box 1439 Parsippany, NJ 07054 Seneca. SC 29679 Mr. R. B. Borsum Manager Rockville Licensing Operations Framatome Technologies Inc.
1700 Rockville Pike, Suite 525 Rockville. MD 20852-1631
.