ML20056H464
| ML20056H464 | |
| Person / Time | |
|---|---|
| Site: | Brunswick  |
| Issue date: | 08/26/1993 |
| From: | Milano P Office of Nuclear Reactor Regulation |
| To: | Richard Anderson CAROLINA POWER & LIGHT CO. |
| References | |
| TAC-M85736, TAC-M85737, NUDOCS 9309090378 | |
| Download: ML20056H464 (4) | |
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August 26, 1993 Docket Nos. 50-325 and 50-324 Mr. R. A. Anderson, Vice President Carolina Power & Light Company Brunswick Stean, Electric Plant Post Office Box 10429 Southport, North Carolina 28461
Dear Mr. Anderson:
SUBJECT:
REQUEST FOR ADDITIONAL INFORMATION REGARDING CONTROL ROD OPERABILITY TECHNICAL SPECIFICATION AMENDMENT REQUEST FOR BRUNSWICK STEAM ELECTRIC PLANT, UNITS 1 AND 2 (TAC NOS. M85736 AND M85737)
By letter dated January 25, 1993, Carolina Power & Light Company requested an amendment to the Technical Specifications (TS) Section 3.1.3.5 for the Brunswick Steam Electric Plant, Units 1 and 2.
To allow operation with more than one inoperable control rod scram accumulator.
The current TS do not address operating with more than one inoperable accumulator. thereby requiring entry into TS 3.0.3.
The staff has completed its initial review of your submittal.
identifies areas where additional information is required to complete our review.
The reporting and/or recordkeeping requirements contained in this letter affect fewer than ten respondents; therefore, OMB clearance is not required under P. L.96-511.
Should you have any questions, please contact me at 301-504-1457.
Sincerely, Original signed by:
Patrick D. Milano, Senior Project Manager Project Directorate 11-1 Division of Reactor Projects - I/II Office of Nuclear Reactor Regulation
Enclosure:
Request for Additional Information cc w/ enclosure:
See next page DISTRIBUTION:
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August 26, 1993 Docket Nos. 50-325 and 50-324 Mr. R. A. Anderson, Vice President Carolina Power & Light Company i
Brunswick Steam Electric Plant Post Office Box 10429 Southport, North Carolina 28461
Dear Mr. Anderson:
SUBJECT:
REQUEST FOR ADDITIONAL INFORMATION REGARDING CONTROL R0D OPERABILITY TECHNICAL SPECIFICATION AMENDMENT REQUEST FOR BRUNSWICK STEAM ELECTRIC PLANT, UNITS 1 AND 2 (TAC NOS. M85736 AND M85737)
By letter dated January 25, 1993, Carolina Power t Light Company requested an amendment to the Technical Specifications (TS) Sect;on 3.1.3.5 for the Brunswick Steam Electric Plant, Units 1 and 2.
To allow operation with more than one inoperable control rod scram accumulator. The current TS de not address operating with more than one inoperable accumulator, thereby requiring entry into TS 3.0.3.
The staff has completed its initial review of your submittal.
identifies areas where additional information is required to complete our review.
The reporting and/or recordkeeping requirements contained in this letter affect fewer than ten respondents; therefore, OMB clearance is not required under P. L.96-511.
Should you have any questions, please contact me at 301-504-1457.
Sincerely, Patrick D. Milano, Senior Project Manager Project Directorate II-l Division of Reactor Projects - I/II Office of Nuclear Reactor Regulation i
Enclosure:
Request for Additional Information cc w/ enclosure,.
j See next page l
Mr. R. A. Anderson-Brunswick Steam Electric Plant Carolina Power & Light Company Units 1 and 2 i
cc:
Mr. Mark S. Calvert Mr. H. A. Cole Associate General Counsel Special Deputy Attorney General Post l
Carolina Power & Light Company State of North Carolina Post Office Box 1551 Post Office Box 629 t
Raleigh, North Carolina 27602 Raleigh, North Carolina 27602 t
Mr. Kelly Holden, Chairman Mr. Robert P. Gruber Board of Commissioners Executive Director i
Post Office Box 249 Public Staff - NCUC
.j Southport, North Carolina 28422 Post Office Box 29520 Raleigh, North Carolina 27626-0520 Resident Inspector U.S. Nuclear Regulatory Commission Mr. H. W. Habermeyer, Jr.
i Star Route 1, Post Office Box 208 Vice President Southport, North Carolina 28461 Nuclear Services Department Carolina Power & Light Company l
Regional Administrator, Region 11 Post Office Box 1551 - Mail OHS 7 U.S. Nuclear Regulatory Commission Raleigh, North Carolina 27602 101 Marietta St., N.W.,
Ste. 2900 Atlanta, Georgia 30323 Mr. Dayne H. Brown, Director Division of Radiation Protection N.C. Department of Environmental, Commerce and Natural Resources Post Office Box 27687 Raleigh, North Carolina 27611-7687 Mr. J. M. Brown Plant Manager - Unit 1 Carolina Power & Light Company i
Brunswick Steam Electric Plant i
Post Office Box 10429 Southport, North Carolina 28461 Public Service Commission State of South Carolina Post Office Drawer 11649 Columbia, South Carolina 29211 Mr. C. C. Warren Plant Manager - Unit 2 Brunswick Steam Electric Plant Post Office Box 10429 Southport, North Carolina 28461 l
ENCLOSURE 1 REQUEST FOR ADDITIONAL INFORMATION BRUNSWICK STEAM ELECTRIC PLANT, UNITS I AND 2 TECHNICAL SPECIFICATIONS CHANGE REGARDING CONTROL ROD OPERABILITY
^
1.
The application for amendment does not account for the extent of scram time degradation for depressurization events when accumulators are not available.
Scram time determination for control rods declared inoperable because of inoperable accumulators is not required under the proposed change.
Further, no assurance exists that the affected rods will scram as required for depressurization events.
Please provide information demonstrating how the intended Technical Specification change affects control rod scram times during depressurization accidents.
i 2.
Although the documents cited in the amendment request explain the control rod drive (CRD) system capability to provide scrams in degraded CRD system states, the effect on plant safety analyses must be clearly discussed.
Emphasis should be placed on events which require the scram energy of the accumulators to satisfy analysis assumptions (e.g., loss-of-coolant accident (LOCA), main steam line break (MSLB), or other l
depressurization events).
Please provide further information demonstrating how the intended Technical Specification change affects i
existing safety analyses.
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