ML20028A197
| ML20028A197 | |
| Person / Time | |
|---|---|
| Site: | Wolf Creek, Callaway, 05000000 |
| Issue date: | 11/03/1982 |
| From: | Youngblood B Office of Nuclear Reactor Regulation |
| To: | Koester G, Schnell D KANSAS GAS & ELECTRIC CO., UNION ELECTRIC CO. |
| References | |
| NUDOCS 8211160563 | |
| Download: ML20028A197 (7) | |
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-i NOV 0 31982 Docket Hos.: STN 50-482 and STN 50-483 Mr. D. F. Schnell Mr. Glenn L. Koester Vice President - Nuclear Vice President - Nuclear Union Electric Company Kansas Gas & Electric Company P. O. Box 149 201 North Market Street St. Louis, Missouri 63166 Wichita, Kansas 67201
Dear Gentlemen:
SUBJECT:
CLARIFICATION OF SRP SECTION 7.4 AND REQUEST FOR INFORMATION REGARDING FIRE PROTECTION FOR CALLAWAY AND WOLF CREEK Enclosed is the NRC staff guidance providing clarification of the requirements in SRP 7.4.
This guidance should be used when considering any design changes i
from the Appendix R review.
In addition, you are requested to provide by December 17, 1982, a response showing how the SNUPPS design does or will comply r
with each item of the first seven gui< felines.
If you have any questions concerning this matter, please contact the licensing i
project manager for Callaway or Wolf Creek, Dr. G. E. Edison and J. B. Hopkir.s.
i respectively.
Sincerely, Oric.M,1 nigned by:
B.'
61:,1 B. J. Youngblood, Chief Licensing Branch No. 1 Division of Licensing
Enclosure:
. DISTRIBUTION:
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Docket Nos.: STN 50-482 and STN 50-483 4
1 Mr. D. F. Schnell
-Mr. Glenn L. Koester Vice President - Nuclear Vice President - Nuclear l
Union Electric Company Kansas Gas & Electric Company P. O. Box-149 201 North Market Street' St. Louis, Missouri 63166 Wichita, Kansas 67201
Dear Gentlemen:
l
SUBJECT:
CLARIFICATION OF SRP SECTION 7.4 Enclosed is the NRC staff guidance providing clarification of the require-ments in SRP 7.4.
This guidance should be used when considering any design ebr.ges from the Appendix R review.
In addition, provide by December 17, 1982, a response to the first seven guidelines showing how the SNUPPS design does or will comply with each item.
i If you have any questions concerning this matter, please contact the licens-ing project manager for Callaway or Wolf Creek. Dr. G. E. Edison and J. B.
Ilopkins, respectively.
Sincerely, B. J. Youngblood, Chief Licensing Branch No. 1 Division of Licensing
Enclosure:
As Stated DISTRIBUTION:
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Mr. D. F. Schnell Terri Sculley, Director Vice President - Nuclear Special Projects Division Union Electric Company Kansas Corporation Commission P. O. Box 149 State Office Building, 4th Floor St. Louis, Missouri 63166 Topeka, Kansas 66612' Mr. Glenn L. Koester cc: Gerald Charnoff, Esq.
Vice President - Nuclear Thomas A. Baxter, Esq.
Kansas Gas and Electric Company Shaw, Pittman, Potts & Trowbridge 201 North Market Street 1800 M Street, N. W.
P. O. Box 208 Washington, D. C.
20036 Wichita, Kansas 67201 Kansas City Power & Light Company Mayor Howard Steffen ATTN: Mr. D. T. McPhee Chamois, Missouri.65024 Vice President - Production 1330 Baltimore Avenue Jay Silberg, Esauire Kansas City, Missouri 64141 Shaw, Pittman, ?otts & Trowbridge 1800 M Street, 1. W.
Mr. Nicholas A. Petrick Washington, D.'C.
20036 Executive Director, SNUPPS 5 Choke Cherry Road Mr. Donald W. Capone Rockvilla, Maryland 20850 Manager - Nuclear Engineering Union Electric Company Mr. J.
'E. Birk P. O. Box 149 Assistant to the General Counsel St. Louis, Missouri 63166 Union Electric Company St. Louis, Missouri 63166 Ms. Mary Ellen Salava Route 1, Box 56 Kansans for Sensible Energy Burlington, Kansas 66839 P. O. Box 3192 Wichita, Kansas 67201 Eric A. Eisen, Esq.
Birch, Horton, Bittner & Moore Mr. Tom Vandel 1140 Connecticut Avenue, N. W.
Resident Inspector / Wolf Creek NPS Washington, D. C.
20036 c/o USNRC P. O. Box 311 Ms. Wanda Christy Burlington, Kansas 66839 515 N. 1st Street Burlington, Kansas 66839 Mr. Michael C. Keener State Corporation Commission Ms. Marjorie Reilly State of Kansas Energy Chainnan of the League Fourth Floor, State Office Building of Women Voters of University Topeka, Kansas 66612 City, M0 7065 Pershing Avenue Mr. John Neisler University City, Missouri 63130 U. S. Nuclear Regulatory Commission Resident Inspector Office Mr. Fred Luekey RR #1 Presiding Judge, Montgomery County Steedman, Missouri 65077 Rural Route Rhineland, Missouri 65069 Professor William H. Miller Mr. John G. Reed Missouri Kansas Section, American Route #1 Nuclear Society Kingdom City, Missouri' 65262 Department of Nuclear Engineering 1026 Engineering Building Mr. Dan I. Bolef, Pre'sident University of Missouri Kay Drey, Re'presentative
-Columbia, Missouri 65211 Board of Directors Coalition for the Environment Robert G. Wright St. Louis Region Associate Judge, Eastern 6267 Delmar Boulevard District County Court, University City, Missouri 63130 Callaway County, Missouri Route #1 Mr. Donald Bollinger, Member Fulton, Missouri 65251 Missourians for Safe Energy 6267 Delmar Boulevard Kenneth M. Chackes University City, Missouri 63130 Chackes and Hoare Attorney for Joint Intervenors John M. Simpson, Esq.
314 N. Broadway Attorney for Intervenors St. Louis, Missouri 63102 4400 Johnson Drive, Suite 110 Shawnee Mission, Kansas 66205 Mr. Earl Brown School District Superintendent Mr. James G. Keppler P. O. Box 9 NRC, Region III Kingdom City, Missouri 65262 799 Roosevelt Road Glen Ellyn, Illinois 60137 Mr. Samuel J. Birk R. R. #1, Box 243 Mr. John T. Collins Morrison, Missouri 65061 NRC Region IV 611 Ryan Plaza Mr. Harold Lottman Suite 1000 Presiding Judge, Dasconade County Arlington, Texas 76011 Route 1 Owensville, Missouri 65066 Mr. Joe Mulholland Manager of Power Supply & Engineering A. Scott Cauger, Esq.
Kansas Electric Power Cooperative, Inc.
l Assistant General Counsel P. O. Box 4877 for the Missouri Public Gage Center Station Service Comnission Topeka, Kansas 66604 P. 0.' Box 360 Jefferson City, Missouri 65101 C. Edward Peterson, Esq.
Legal Division Ms. Barbara Shull.
Kansas Corporation Commission l
Ms. Lenore Loeb Fourth Floor League of Women Voters of Missouri State Office Building 2138 Woodson Road Topeka, Kansas 66612 St. Louis, Missouri 63114 e
4 ICSB GUIDANCE FOR THE INTERPRETATION OF GENERAL DESIGN CRITERIA 19 CONCERNING REOUIREMENTS FOR REMOTE SHUTDOWN STATIONS A.
BACKGROUND GDC 19 requires that equipment at appropriate locations outside the control room be provided to achieve a safe shutdown of the reactor.
Recent reviews of remote shutdown station designs have demonstrated that some designs cannot accommodate a single failure in accordance with the guidance of SRP Section 7.4 (Interpretation of GDC-19). The following provides supplemental guidance for the implementation of the requirements of GDC-19 concerning remote shut-l down stations.
Requirements for remote shutdown capability following a fire are detailed in Appendix R to 10 CFR 50.
It should be noted that although GDC 19 and Appendix R requirements are complementary, the potential j
exists that modifications to bring a design into conformance with GDC 19 will violate Appendix R criteria and vice versa.,For example, remote manual-control devices for a second division of instrumentation and controls added to satisfy single failure requirements would not be acceptable if the added devices were located in the same fire area as existing transfer switches f
in the redundant division.
In addition, transfer switches added to is'olate the remote shutdown equipment from the control room fire area would not be 1
acceptable if they disable ESF actuation, unless this is done in accordance i
with item B6 below.
The acceptability of remote shutdown station designs given a fire is determined by the Auxiliary Systems Branch (ASB) as out-lined in Section 9.5.1 of the SRP.
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. B.
ICSB GUIDANCE To Meet GDC-19 (As Interpreted in SRP Section 7.4)
- 1) The design should provide redundant safety grade capability to achieve and maintain hot shutdown from a location or locations remote from the control room, assuming no fire damage to any required systems and equip -
ment and assuming no accident has occurred.
The remote shutdown station-equipment should be capable of maintaining functional operability under all service conditions postulated to occur (including abnormal environ-
~
ments such as loss of ventilation), but need not be environmentally qualified for accident conditions unless environmental qualification is required for reasons other than remote shutdown. The remote shutdown station equipment, including indicators, should be seismically qualified.
- 2) Redundant instrumentation (indicators) should be provided to display to the operator (s) at the remote shutdown location (s) those parameters which are relied upon to achieve and verify that a, safe shutdown condition has I
been attained.
- 3) Credit may be taken for manual actions (exclusive of continuous control) of systems from locations that are reasonably accessible from the Remote l
Shutdown Stations.
Credit may not be taken for manual actions involving jum'pering, rewiring, or disconnecting circuits.
- 4) The design should provide redundant safety grade capability for attaining subsequent cold shutdown throu.gh the use of suitable procedures.
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- 5) Loss of offsite power should not negate shutdown capability from the remote shutdown stations. The design and procedures should be such that following activation of control from the remote shutdown location, a loss of offsite power will not result in subsequent overloading of ess.ential buses or the diesel generator.
Manual restoration of power to shutdown loads is acceptable provided that sufficient information is available such that it can be performed in a ~ safe manner.
- 6) The design should be such that if manual transfer of control to the remote i
location (s) disables any automatic actuation of ESF equipment, this equipment can be manually placed in service from the remote shutdown station (s). Transfer to the remote location (s) should not change the operating status nf equipment.
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- 7) Where either access to the remnte shutdown station (s) or the operation of e'quipment at the station (s) is dependent upon the use of keys (e.g.,
1 key lock switches), access to these keys 'shall be administratively con-trolled and shall not be precluded by the event necessitating evacuation of the control room.
- 8) The design should comply with the requirements of Appendix R to 10 CFR 50.
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