ML20035F478
| ML20035F478 | |
| Person / Time | |
|---|---|
| Site: | Perry  |
| Issue date: | 04/15/1993 |
| From: | Robert Stransky Office of Nuclear Reactor Regulation |
| To: | Stratman R CLEVELAND ELECTRIC ILLUMINATING CO. |
| Shared Package | |
| ML20035F480 | List: |
| References | |
| RTR-REGGD-01.097, RTR-REGGD-1.097 GL-82-33, TAC-M79010, NUDOCS 9304210329 | |
| Download: ML20035F478 (4) | |
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UNITED STATES
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[. W.. j NUCLEAR REGULATORY COMMISSION i
WASHINGTON, D.C. 20556-0001
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April 15, 1993 Docket No. 50-440 t
l Mr. Robert A. Stratman, Vice President Nuclear - Perry The Cleveland Electric Illuminating J
Company 10 Center Road i
Perry, Ohio 44081
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Dear Mr. Stratman:
SUBJECT:
REGULATORY GUIDE 1.97 - BOILING WATER REACTOR NEUTRON FLUX MONITORING (TAC NO. M79010) i Section 6.2 of Generic Letter 82-33 requests applicants and licensees to provide a report on their implementation of Regulatory Guide (R.G.) 1.97, Revision 2, and methods for complying with the Commission's regulations i
including supporting technical justification of any proposed deviations or alternatives. A large number of deviation requests were received from Boiling Water Reactor (BWR) applicants and licensees concerning neutron flux i
monitoring instrumentation. These requests were initially denied.
In support of these requests, the Boiling Water Reactor Owners' Group (BWROG) submitted NED0-31558, " Position on NRC Regulatory Guide 1.97, Revision 3, Requirements for Post-Accident Neutron Monitoring System." NED0-31558 proposes alternate criteria for neutron flux monitoring instrumentation in lieu of the Category I criteria stated in R.G. 1.97.
The staff has completed its evaluation of NEDO-31558, and by letter dated January 13, 1993, to the BWROG, issued a Safety Evaluation (SE) regarding the topical report. A copy of the SE is enclosed.
The Safety Evaluation concluded that, for current BWR operating license and construction permit holders, the criteria of NED0-31558 are acceptable. However, for new license applications for both conventional and advanced BWR designs, the R.G.1.97 criteria must be met for neutron flux monitoring instrumentation. The staff further concluded that Category I neutron flux monitoring instrumentation is not needed for existing BWRs to cope with a Loss-of-Coolant Accident, Anticipated Transient Without Scram, or other accidents that do not result in severe core damage conditions.
Instrumentation to monitor the progression of core melt accidents is best' addressed by the current severe accident management program.
You are requested to review your neutron flux monitoring instrumentation against the criteria of NED0-31558 to determine whether you meet these criteria, and provide a letter to the NRC documenting the results of your review.
If you do not meet the criteria, you should either make a commitment to meet the criteria and state when this commitment will be fulfilled, or explicitly state any deviations from the criteria and provide supporting justification.
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Mr. Robert A. Stratman
-2 April 15, 1993
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The criteria of NED0-31558 include the use of uninterruptible and reliable power sources. The BWROG and the staff agree that redundant neutron flux monitoring channels should be powered from different uninterruptible. power supplies (UPS), so that loss of a single UPS would not cause the loss of all l
channels. You are, therefore, requested to perform a plant-specific evaluation to review the power supplies to neutron flux monitoring.
l instrumentation, including recorders. This review should verify that power l
would not be lost during design basis events by load shedding logics or similar schemes, and that a single power supply failure would not cause the i
loss of all channels. The results of this review should be indicated in your response to the staff concerning this issue.
For your plant, neutron flux is identified as a Type A variable. Therefore, you should review your Emergency Operating Procedures (EOPs) to assure that there is no plant-specific role for neutron flux monitoring that differs from that identified in NED0-31558.
If the role of neutron flux monitoring does not differ from that identified in NED0-31558, you will not be required to i
upgrade. its qualification to meet the Category I criteria, and you may remove neutron flux from your Type A instrument list.
Since neutron flux monitoring instrumentation for BWRs is no longer considered to be Category 1 instrumentation, you may request the removal of neutron flux monitoring instrumentation from your post-accident monitoring technical specifications.
If you wish to maintain a post-accident monitoring technical i
specification on this instrumentation, you may do so.
Please notify the NRC, within 60 days of. receipt of this letter, of the actions you plan to take and your schedule for implementation.
If you have any questions regarding this issue, please do not hesitate to contact me at (301) 504-1346.
This request for information was approved by the Office of Management and Budget under clearance number 3150-0011 which expires June 30, 1994.
Comments on burden and duplication may be directed to the Office of Management and Bud 5et, Reports Management Room 3208, New Executive Office Building, Washington, D. C. 20503.
Sincerely, g;i}[, &p..hlII.
.RobeftD.~5transky,ProjectManager Project Directorate III-3 Division of Reactor Projects III/IV/V Office of Nuclear Reactor Regulation
Enclosure:
As stated cc/w enclosure:
See next page
Mr. Robert A. Stratman April 15, 1993 The criteria of NED0-31558 include the use of uninterruptible and reliable power sources. The BWROG and the staff agree that redundant neutron flux monitoring channels should be powered from different uninterruptible power supplies (UPS), so that loss of a single UPS would not cause the loss of all channels.
You are, therefore, requested to perf
^.a a plant-specific evaluation to review the power supplies to neutron flux monitoring instrumentation, including recorders. This review should verify that power would not be lost during design basis events by load shedding logics or i
similar schemes, and that a single power supply failure would not cause the loss of all channels.
The results of this review should be indicated in your response to the staff concerning this issue.
For your plant, neutron flux is identified as a Type A variable. Therefore, you should review your Emergency Operating Procedures (EOPs) to assure that i
there is no plant-specific role for neutron flux monitoring that differs from that identified in NED0-31558.
If the role of neutron flux monitoring does not differ from that identified in NED0-31558, you will not be required to upgrade its qualification to meet the Category 1 criteria, and you may remove neutron flux from your Type A instrument list.
l Since neutron flux monitoring instrumentation for BWRs is no longer considered i
l to be Category 1 instrumentation, you may request the removal of neutron flux l
monitoring instrumentation from your post-accident monitoring technical specifications.
If you wish to maintain a post-accident monitoring technical specification on this instrumentation, you may do so.
Please notify the NRC, within 60 days of receipt of this letter, of the actions you plan to take and your schedule for implementation.
If you have any questions regarding this issue, please do not hesitate to contact me at (301) 504-1346.
This request for information was approved by the Office of Management and Budget under clearance number 3150-0011 which expires June 30, 1994.
Comments on burden and duplication may be directed to the Office of Management and l
Budget, Reports Management Room 3208, New Executive Office Building, Washington, D. C. 20503.
l Sincerely, Original Signed By:
Robert J. Stransky, Project Manager Project Directorate III-3 i
Division of Reactor Projects III/IV/V Office of Nuclear Reactor Regulation
Enclosure:
DISTRIBUTION:
As stated Docket' File JZwolinski OGC NRC~ & Local PDRs JHannon ACRS (10) cc/w enclosure:
PDIII-3 Reading MRushbrook Region III, DRP See next page JRoe RStransky js/bj J nnon
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/gT93 DOCUM NT NAME:
G:\\ PERRY \\PER79010.LTR j
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Mr. Robert A. Stratman Perry Nuclear Power' Plant Cleveland Electric Illuminating Company Unit Nos. I and 2 i
CC Jay E. Silberg, Esq.
Mr. James W. Harris, Director l
Shaw, Pittman, Potts & Trowbridge Division of Power Generation 2300 N Street, N.W.
Ohio Department of Industrial Relations Washington, D.C.
20037 P. O. Box 825 Columbus, Ohio 43216 Mary E. O'Reilly Centerior Energy Corporation The Honorable Lawrence Logan 300 Madison Avenue Mayor, Village of Perry i
Toledo, Ohio 43652 4203 Harper Street Perry, Ohio 44081 i
Resident Inspector's Office The Honorable Robert V. Orosz U.S. Nuclear Regulatory Commission Mayor, Village of North Perry Parmly at Center Road North Perry Village Hall l
Perry, Ohio 44081 4778 Lockwood Road North Perry Village, Ohio 44081 l
Regional Administrator, Region III j
l U.S. Nuclear Regulatory Commission Attorney General i
799 Roosevelt Road Department of Attorney General Glen Ellyn, Illinois 60137 30 East Broad Street Columbus, Ohio 43216 l
l Frank P. Weiss, Esq.
Assistant Prosecuting Attorney Radiological Health Program l
105 Main Street Ohio Department of Health t
Lake County Administration Center Post Office Box 118 Painesville, Ohio 44077 Columbus, Ohio 43266-0118 i
l Ms. Sue Hiatt Ohio Environmental Protection Agency OCRE Interim Representative DERR--Compliance Unit 8275 Munson ATTN: Zack A. C1ayton Mentor, Ohio 44060 P. O. Box 1049 Columbus, Ohio 43266-0149 l
Terry J. Lodge, Esq.
l 618 N. Michigan Street, Suite 105 Mr. Phillip S. Haskell, Chairman Toledo, Ohio 43624 Perry Township Board of Trustees 4171 Main Street, Box 65 John G. Cardinal, Esq.
Perry, Ohio 44081 Prosecuting Attorney Ashtabula County Courthouse State of Ohio Jefferson, Ohio 44047 Public Utilities Commission East Broad Street Mr. Kevin P. Donovan Columbus, Ohio 43266-0573 Cleveland Electric Illuminating Company David P. Igyarto, General Manager Perry Nuclear Power Plant Cleveland Electric Illuminating Company P. O. Box 97, E-210 Perry Nuclear Power Plant Perry, Ohio 44081 Post Office Box 97, SB306 Perry, Ohio 44081 l
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