ML20097B996
| ML20097B996 | |
| Person / Time | |
|---|---|
| Site: | Comanche Peak  |
| Issue date: | 02/02/1996 |
| From: | NRC (Affiliation Not Assigned) |
| To: | |
| Shared Package | |
| ML20097B987 | List: |
| References | |
| NUDOCS 9602080055 | |
| Download: ML20097B996 (6) | |
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i SAFETY EVALUATION BY THE OFFICE OF NUCLEAR REACTOR REGULATION RELATED TO AMENDMENT N05. m AND 31TO FACILITY OPERATING LICENSE NDS. NPF-87 AND NPF-89 i
TEXAS UTILITIES ELECTRIC COMPANY j
COMANCHE PEAK STEAM ELECTRIC STATION. UNITS 1 AND 2 f
DOCKET Nos. 50-445 AND 50-446 l
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1.0 INTRODUCTION
By application dated January 5,1996 Company (TU Electric /the licensee) req (TXX-96007), Texas Utilities Electric uested changes to the Technical Specifications (TSs) (Appendix A to Facility Operatin NPF-89) for the Comanche Peak Steam Electric Station,g License Nos. NPF-87 (CPSES) Units 1 and 2.
The proposed exigent amendments would temporarily change the TSs to revise the requirements for Minimum Channels OPERABLE for Wide Range RCS (Reactor Coolant System) Temp.(Temperature)-T remote shutdown indication for CPSES Unit 2.
The minimum number of channe,ls required is being revised from one per RCS Loop for each RCS Loop to one per RCS Loop for three of the four RCS Loops. This t
temporary change is requested as a result of the failure of one of the T channels in a manner which cannot be repaired without a unit shutdown an$ a possible cooldown. These changes are only applicable to CPSES Unit 2 and are being submitted on the CPSES Unit I docket for administrative purposes only because the CPSES TSs is a single document which applies to both units.
2.0 BACKGROUND
On December 31,1995, at 2:10 a.m. CST, the Wide Range RCS Temp.-T, remote shutdown indication for one RCS Loop was discovered to be inoperable.
Licensee troubleshooting efforts indicated a ground located in an area inside containment that is normally only accessible during periods of a reactor shutdown. Radiation levels, temperature and personnel safety considerations preclude further corrective actions without performing a plant shutdown and a possible cooldown. CPSES Unit 2 is scheduled to commence a refueling outage on February 22, 1996. CPSES Unit 2 has no other outages planned prior to the scheduled start of the refueling outage. In accordance with the enforcement discretion granted on January 5,1996, TU Electric requested a revision to the TS requirement that all four remote shutdown monitoring channels for Wide Range RCS Temp.-T be operable.
The proposed license amendments revise the requirements to aIlow operation with one of the four available instruments out of service until CPSES Unit 2 enters Mode 4 at the beginning of the second refueling outage for Unit 2.
9602080055 960202
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PDR ADOCK 05000445 P
Mr. C. Lance Terry TU Electric Company Comanche Peak, Units 1 and 2 cc:
Senior Resident Inspector Honorable Dale McPherson U.S Nuclear Regulatory Commission County Judge P. O. Box 1029 P. O. Box 851 Granbury, TX 76048 Glen Rose, TX 76043 i
Regional Administrator, Region IV Office of the Governor U.S. Nuclear Regulatory Commission ATTN: Susan Rieff, Director 611 Ryan Plaza Drive, Suite 400 Environmental Policy Arlington, TX 76011 P. O. Box 12428 Austin, TX 78711 Mrs. Juanita Ellis, President Citizens Association for Sound Energy Arthur C. Tate, Director 1426 South Polk Division of Compliance & Inspection Dallas, TX 75224 Bureau of Radiation Control Texas Department of Health Mr. Roger D. Walker, Manager 1100 West 49th Street Regulatory Affairs for Nuclear Austin, TX 78756-3189 Engineering Organization Texas Utilities Electric Company 1601 Bryan Street, 12th Floor Dallas, TX 75201-3411 i
Texas Utilities Electric Company e
c/o Bethesda Licensing 3 Metro Center, Suite 610 Bethesda, MD 20814 George L. Edgar, Esq.
Morgan, Lewis & Bockius 1800 M Street, N.W.
Washington, DC 20036-5869
i
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fire shutdown, the remaining three T indicators allow RCS hot leg temperature to be monitored during a plant coold"own.
l The subject T instrument is part of the CPSES design for shutdown from j
outside the control room CPSES Final Safety Analysis Report (FSAR) section 7.4.1.3.
The Wide Range RCS. Temperature indication is used in a remote i
shutdown situation for verification of natpral circulation, verification of j
adequate RCS sub-cooling, and for verifying that RCS temperature is adequate for initializing Residual Heat Removal-l that shutdown from outside the control r(RHR) cooling.
In the unlikely event oom, the inoperability of Wide Range 1
Temp.-Tn for a single RCS Loop is expedted to have no measurable impact on the i
ability of the operators to safely.cooldown the RCS and establish RHR cooling.
The staff finds that a loss of a single. loop T indicator would have minimal 4
safety significance should use of the HSP be required during this period and i
j therefore, the proposed change is acceptable.
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4.0 EXIGENT CIRCUMSTANCES
l The Comission's regulation,10 CFR 50.91, contain provisions for issuance of i
amendments when'the usual 30-day public notice period cannot be met. One type of special exception is an exigency. An exigency is a case where the staff j
and licensee need to act promptly and the staff has determined that the amendments involve no significant hazards considerations.
Under such circumstances, the Comission notifies the public in one of two '
l ways: by issuing a Federal Reaister notice providing an opportunity for j~
hearing and allowing at least two weeks for prior public coments, or by issuing a press release discussing the proposed changes, using the local media.
In this case, the Comission,used,the first approach.
The licensee identified on December 31, 1995, at 2:10 a.m. CST, the Wide Range RCS Temp.-Tu remote shutdown indication for one RCS Loop was inoperable.
Licensee troubleshooting efforts indicated a ground located in an area inside containment that is normally only accessible during periods of a reactor shutdown.
Radiation levels, temperature and personnel safety considerations preclude further corrective actions without performing a plant shutdown and a possible cooldown. CPSES Unit 2 is scheduled to comence a refueling outage on February 22, 1996. CPSES Unit 2 has no other outages planned prior to the scheduled start of the refueling outage.
In their request for enforcement discretion dated January 5,1996. TU Electric proposed a revision to the TS requirement that all four remote shutdown monitoring channels for Wide Range RCS temp.-Tn be operable. The proposed license amendments revise the requirements to allow operation with one of the four available instruments out of service until'CPSES Unit 2 enters Mode 4 at the beginning of its second refueling outage. The content of the proposed TS was considered in granting the NOED.
The licensee subeltted the request for amendments on January 5, 1996, in accordance with the enforcement discretion request. The amendments were noticed in the Federal Reaister on January 22, 1996 (61 FR 1651), at which
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UNITED STATES f
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NUCLEAR REGULATORY COMMISSION
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WASHINGTON, D.C. 30066 4 001
' February 2, 1996 Mr. C. Lance Terry 1
Group Vice President, Nuclear TU Electric Energy Plaza 1601 Bryan Street,12th Floor i
Dallas, TX 75201-3411 i
1
SUBJECT:
COMANCHE PEAK STEAM ELECTRIC STATION, UNITS 1 AND 2 - AMENDMENT NOS. 45 AND 31 TO FACILITY OPERATING LICENSE N05. NPF-87 AND NPF-89 (TAC N05. M94411 AND M94412)
Dear Mr. Terry:
The Commission has issued the enclosed Amendment Nos. 46 and 31 to Facility Operating License Nos. NPF-87 and NPF-89 for the Comanche Peak Steam Electric Station, (CPSES) Units 1 and 2.
The amendments consist of changes to the Technical Specifications (TSs) in response to your application dated January 5, 1996 (TXX-96007).
The proposed exigent amendments would temporarily change the TSs to revise the requirements for Minimum Channels OPERABLE for Wide Range RCS (Reactor Coolant System) Temp. Temperature)-T remote shutdown indication for CPSES Unit 2.
The minimum nu(mber of channels required is being revised fro for each RCS Loop to one per RCS Loop for three of the four RCS Loops. This temporary change is requested as a result of the failure of one of the T channelsinamannerwhichcannotberepairedwithoutaunitshutdownan$a possible cooldown. The NRC granted enforcement discretion on January 5,1996, to allow the facility to continue operation while this exigent TS is processed.
These changes are only applicable to CPSES Unit 2 and are being submitted on the CPSES Unit I docket for administrative purposes only because the CPSES TSs is a single document which applies to both units.
A copy of our related Safety Evaluation is enclosed. The Notice of Issuance will be included in the Commission's next biweekly Federal Reatster notice.
Sincerely,
[
Timothy J.
olich, Project Manager Project Directorate IV-1 Division of Reactor Projects III/IV Office of Nuclear Reactor Regulation Docket Nos. 50-445 and 50-446
Enclosures:
1.
Amendment No. 45 to NPF-87 2.
Amendment No. 31 to NPF-89 3.
Safety Evaluation cc w/encis: See next page
l introduced and the proposed change to the TSs will not create the possibility of a new or different kind of accident from any accident previously evaluated.
The license amendments do not involve a significant reduction in the margin of l
safety. The Wide Range Hot Leg RCS Temperature indication at the HSP is only required in the event that a remote shutdown from outside the control room is needed. The availability of other remote shutdown indications (including T,
T in other RCS Loops, and steam generator pressure) in combination with IIcensedoperatorswhohavebeenbriefedonhowtocompensateforan inoperable in for one RCS Loop using these other indications, assures that the increased unavailability of the instrument will not have a significant effect l
in the margin of safety.
I Based upon the above considerations, the staff concludes that the amendments meet the three criteria of 10 CFR 50.92. Therefore, the staff has made a final determination that the proposed amendments do not involve a significant hazards consideration.
l E.0 STATE CONSULTATION In accordance with the Comission's regulations, the Texas State official was notified of the proposed issuance of the amendments. The State official had no coments.
7.0 ENVIRONMENTAL CONSIDERATION
i The amendments change a requirement with respect to installation or use of a l
facility component located within the restricted area as defined in 10 CFR l
Part 20. The NRC staff has determined that the amendments involve no significant increase in the amounts, and no significant change in the types, of any effluents that may be released offsite, and that there is no significant increase in individual or cumulative occupational radiation l
l exposure. The Commission has previously issued a proposed finding that the amendments involve no significant hazards consideration, and there has been no public comment on such finding (61 FR 1651). Accordingly, the amendments meet l
the eligibility criteria for categorical exclusion set forth in 10 CFR Sl.22(c)(9).
Pursuant to 10 CFR 51.22 b) no environmental impact statement or environmental assessment need be prepar(ed in connection with the issuance of l
the amendments.
8.0 CONCLUSION
The Comission has concluded, based on the considerations discussed above, that:
(1) there is reasonable assurance that the health and safety of the public will not be endangered by operation in the proposed manner, (2) such l
activities will be conducted in compliance with the Commission's regulations, l
and (3) the issuance of the amendments will not be inimical to the common defense and security or to the health and safety of the public.
I Principal Contributor: Timothy Polich Date:
February 2, 1996 l
l I
Mr. C. Lance Terry February 2, 1996 Group Vice Presid: int, Nuclear TU Elsetric Energy Plaza 1601 Bryan Street, 12th Floor Dallas, TX 75201-3411
SUBJECT:
COMANCHE PEAK STEAM ELECTRIC STATION, UNITS 1 AND 2 - AMENDMENT NOS. 46 AND 31TO FACILITY OPERATING LICENSE NOS. NPF-87 AND NPF-89 (TAC NOS. M94411 AND M94412)
Dear Mr. Terry:
The Consulssion has issued the enclosed Amendment Nos. (l and 31to Facility Operating License Nos. NPF-87 and NPF-89 for the Comanene Peak Steam Electric
- Station, CPSES) Units I and 2.
Technical (Specifications (TSs) in response to your application datedThe a January 5, 1996 (TXX-96007).
The proposed exigent amendments would temporarily change the TSs to revise the requirements for Minimum Channels OPERABLE for Wide Range RCS (Reactor Coolant System) Temp.(Temperature)-T remote shutdown indication for CPSES Unit 2.
The minimum number of channels required is being revised from one per RCS Loop 1
for each RCS Loop to one per RCS Loop for three of the four RCS Loops. This temporary change is requested as a result of the failure of one of the T channelsinamannerwhichcannotberepairedwithoutaunitshutdownanba possible cooldown. The NRC granted enforcement discretion on January 5,1996, to allow the facility to continue operation while this exigent TS is processed. These changes are only applicable to CPSES Unit 2 and are being submitted on the CPSES Unit I docket for administrative purposes only because the CPSES TSs is a single document which applies to both units.
A copy of our related Safety Evaluation is enclosed. The Notice of Issuance will be included in the Commission's next biweekly Federal Reaister notice.
i Sincerely, Original signed by Timothy J. Polich, Project Manager Project Directorate IV-1 Division of Reactor Projects III/IV Office of Nuclear Reactor Regulation Docket Nos. 50-445 and 50-446
Enclosures:
1.
Amendment No. 45 to NPF-87 2.
Amendment No. 31 to NPF-89 3.
Safety Evaluation cc w/encls: See next page DISTRIBUTION:
Docket File OGC PUBLIC DHagan JRoe GHill (4)
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LHurley, RIV JWermiel NGilles 8Marcus CMcCracken WKMortensen CGrimes JKilcrease, RIV f/r DOCUMENT NAME: CP94411.AMD OFFICIAL RECORD COPY OFF m LA/PDIV-1 PM/PDIV-1 H{CS.,
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