ML20151L744
| ML20151L744 | |
| Person / Time | |
|---|---|
| Site: | Quad Cities  |
| Issue date: | 07/31/1997 |
| From: | Pulsifer R NRC (Affiliation Not Assigned) |
| To: | Johnson I COMMONWEALTH EDISON CO. |
| References | |
| TAC-M98319, TAC-M98320, NUDOCS 9708070180 | |
| Download: ML20151L744 (5) | |
Text
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t July 31, 1997 Ms. Irene Johnson, Acting Manager Nuclear Regulatory Services Commonwealth Edison Company Executive Towers West III 1400 Opus Place, Suite 500 Downers Grove, IL 60515
SUBJECT:
TECHNICAL SPECIFICATION BASES CHANGE - QUAD CITIES NUCLEAR POWER STATION, UNITS 1 AND 2 (TAC NOS. M98319 AND M98320)
Dear Ms. Johnson:
By. letter dated March 3,1997, Commonwealth Edison Company (Comed) submitted a change to facility.0perating License Nos. DPR-29 and DPR-30, Appendix A -
Technical Specification (TS) Bases Section 3/4.9.E, Distribution - Operation.
j The first sentence of the second paragraph states, "The surveillance require-ments verify that the A.C. and D.C. electrical power distribution systems are functioning properly, with all the required circuit breakers closed and the i
buses energized from normal power." The words "and the buses energized from normal power" were deleted. This allows the buses to be energized by alternate sources and still assures the required power distribution system divisions are energized with correct breaker alignment and voltage on the buses, MCCs and panels.
~
Comed performed an evaluation pursuant to 10 CFR 50.59 and determined that an Unreviewed Safety Question does not exist. The staff has no objection to this Bases change.
Enclosed, is a revised TS Bases page B 3/4.9-8.
Sincerely, ORIGINAL SIGNED BY:
Robert M. Pulsifer, Project Manager Project Directorate III-2 l
Division of Reactor Projects - III/IV Office of Nuclear Reactor Regulation 4
Docket Nos. 50-254 and 50'265
Enclosure:
Revised TS Bases page cc w/ enc 1:
see next page 7
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' Distribution:
Docket File PUBLIC
.PDIII-2 r/f J. Roe, JWR E. Adensam, EGAl R. Capra C. Moore R. Pulsifer G. Hill (4)
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e July 31, 1997 Ms. Irene Johnson, Acting Manager Nuclear Regulatory Services Commonwealth Edison Company Executive Towers West III 1400 Opus Place, Suite 500 Downers Grove, IL 60515
SUBJECT:
TECHNICAL SPECIFICATION BASES CHANGE - QUAD CITIES NUCLEAR POWER STATION, UNITS 1 AND 2 (TAC NOS, M98319 AND M98320)
Dear Ms. Johnson:
By letter dated March 3,1997, Commonwealth Edison Company (Comed) submitted a change to Facility Operating License Nos. DPR-29 and DPR-30, Appendix A -
Technical Specification (TS) Bases Section 3/4.9.E, Distribution - Operation.
The first sentence of the second paragraph states, "The surveillance require-ments verify that the A.C. and D.C. electrical power distribution systems are functioning properly, with all the required circuit breakers closed and the buses energized from normal power." The words "and the buses energized from normal power" were deleted. This allows the buses to be energized by alternate sources and still assures the required power distribution system divisions are energized with correct breaker alignment and voltage on the buses, MCCs and panels.
Comed performed an evaluation pursuant to 10 CFR 50.59 and determined that an Unreviewed Safety Question does not exist. The staff has no objection to this Bases change.
Enclosed, is a revised TS Bases page B 3/4.9-8.
Sincerely, ORIGINAL SIGNED BY:
Robert M. Pulsifer, Project Manager Project Directorate III-2 Division of Reactor Projects - III/IV Office of Nuclear Reactor Regulation Docket Nos. 50-254 and 50-265
Enclosure:
Revised TS Bases page cc w/ enc 1:
see next page Distribution:
Docket File PUBLIC PDIII-2 r/f J. Roe, JWR E. Adensam, EGA1 R. Capra C. Moore R. Pulsifer G. Hill (4)
W. Beckner 0GC, 015B18 ACRS, T2E26 W. Kropp, RIII J. Calvo DOCUMENT NAME: G:\\CMNTJR\\ QUAD \\QC98319.LTR To riceive e copy of this dccument, indicate in the box: "C" = Copy without enclosures *E' = Copy with enclosures *N* = No copy 0FFICE PM:PDIII-2 f
LAAPQ(II-2 R/ EELB D:PDIII-2 lE NAME RPUI SIFERff/'
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JCALVO TML RCAPRA A,-
DATE 07/7(/97 07 M 97 07/Jc/97 07/7//97 0FFICIAL RECORD COPY
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UNITED STATES NUCLEAR REGULATORY COMMISSION 4
1 i
WASHINGTON, D.C. 30666 4 001 July 31, 1997 3
Ms. Irene Johnson, Acting Manager Nuclear. Regulatory Services Commonwealth Edison Company Executive Towers West III y
1400 Opus Place, Suite 500 Downers Grove, IL 60515
SUBJECT:
TECHNICAL SPECIFICATION BASES CHANGE - QUAD CITIES NUCLEAR POWER STATION, UNITS 1 AND 2 (TAC NOS. M98319 AND M98320)
Dear Ms. Johnson:
By letter dated March 3, 1997, Commonwealth Edison Company (Comed) submitted a change to Facility Operating License Nos. DPR-29 and DPR-30, Appendix A -
Technical Specification (TS) Bases Section 3/4.9.E, Distribution - Operation.
The first sentence of the second paragraph states, "The surveillance require-ments verify that the A.C. and D.C. electrical power distribution systems are t
functioning properly, with all the required circuit breakers closed and the buses energized from normal power." The words "and the buses energized from 4
normal power" were deleted. This allows the buses to be energized by alternate sources and still assures the required power distribution system divisions are energized with correct breaker alignment and voltage on the buses, MCCs and panels.
l l
Comed performed an evaluation pursuant to 10 CFR 50.59 and determined that an Unreviewed Safety Question does not exist. The staff has no objection to this Bases change.
Enclosed, is a revised TS Bases page B 3/4.9-8.
1 Sincerely,
/
Robert M. Pulsifer, Project Manager Project Directorate III-2 Division of Reactor Projects - III/IV Office of Nuclear Reactor Regulation Docket Nos. 50-254 and 50-265
Enclosure:
Revised TS Bases page cc w/ enc 1:
see next page
I. Johnson Quad Cities Nuclear Power Station Commonwealth Edison Company Unit Nos. I and 2 cc:
Michael I. Miller, Esquire Document Control Desk-Licensing Sidley and Austin Commonwealth Edison Company One First National Plaza 1400 Opus Place, Suite 400 Chicago, Illinois 60603 Downers Grove, Illinois 60515 Mr. L. William Pearce Station Manager Quad Cities Nuclear Power Station 22710 206th Avenue North Cordova, Illinois 61242 U.S. Nuclear Regulatory Commission Quad Cities Resident Inspectors Office 22712 206th Avenue North Cordova, Illinois 61242 Chairman Rock Island County Board of Supervisors 1504 3rd Avenue Rock Island County Office Bldg.
Rock Island, Illinois 61201 Illinois Department of Nuclear Safety Office of Nuclear Facility Safety 1035 Outer Park Drive Springfield, Illinois 62704 Regional Administrator U.S. NRC, Region III 801 Warrenville Road Lisle, Illinois 60532-4351 Richard J. Singer Manager - Nuclear MidAmerican Energy Company 907 Walnut Street P.O. Box 657 Des Moines, Iowa 50303 Brent E. Gale, Esq.
Vice President - Law and Regulatory Affairs MidAmerican Energy Company One RiverCenter Place 106 East Second Street P.O. Box 4350 Davenport, Iowa 52808 l
l
ELECTRICAL POWER SYSTEMS B 3/4.9 e
i BASES i
4.
Instrumentation and control capability is available for monitoring and maintaining the unit in a cold shutdown condition and refueling condition.
With one or more of the required D.C. electrical power sources inoperable, the action provisions require a suspensien of activities that will preclude the occurrence of actions that could potentially initiate the postulated events. However, timely suspension of these activities is not intended to preclude completion of actions necessary to establish a safe, conservative condition.
3/4.9.E Distribution - Ooeratina The OPERABILITY of the A.C. and D.C. onsite power distribution systems ensures that sufficient power will be available to the safety related equipment required for (1) the safe shutdown of the facility and (2) the mitigation and control of accident conditions within the facility.
The surveillance requirements verify that the A.C. and D.C. electrical power distribution systems are functioning properly, with all the required circuit breakers closed. The verification of proper voltage availability on the buses ensures that the required power is readily available for motive as well as control functions for critical system loads connected to these buses. The frequency takes into account the redundant capability of the A.C. and D. C. electrical power distribution subsystems, and other indications available in the control room that will alert the operator to subsystem malfunctions.
3/4.9.F Distribution - Shutdown The OPERABILITY of the minimum specified A.C. and D.C. onsite power distribution systems, during Cold Shutdown and Refueling and when handling irradiated fuelin the secondary containment, ensures that the facility can be maintained in these conditions for extended tima periods and sufficient instrumentation and control capability is available for monitoring and maintaining the unit status. Requiring OPERABILITY of the minimum specified onsite power distribution systems when handling irradiated fuel in the secondary containment helps to ensure that systems needed to mitigate a fuel handling accident are available.
3/4.9.G RPS Power Monitorina Specifications are provided to ensure the OPERABILITY of the reactor protection system (RPS) bus electrical protection assemblies (EPAs). Each RPS motor generator (MG) set and the alternate power source has 2 EPA CHANNEL (s) wired in series. A trip of either CHANNEL from either overvoltage, undervoltage, or underfrequency will disconnect the associated MG set or alternate power source.
By letter dated QUAD CITIES - UNITS 1 & 2 B 3/4.9-8 l
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