ML20214X141
| ML20214X141 | |
| Person / Time | |
|---|---|
| Site: | Comanche Peak  |
| Issue date: | 06/08/1987 |
| From: | Charemagne Grimes NRC OFFICE OF SPECIAL PROJECTS |
| To: | Counsil W TEXAS UTILITIES ELECTRIC CO. (TU ELECTRIC) |
| Shared Package | |
| ML20214X144 | List: |
| References | |
| NUDOCS 8706160348 | |
| Download: ML20214X141 (5) | |
Text
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]>r June 8, 1987 Docket Nos.~50-445 and 50-446-Mr. William G'. Counsil Executive Vice President -
Texas Utilities Electric Company 400 North Olive Street, L.B. 81 Dallas, Texas 75201
Dear Mr. Counsil:
1
SUBJECT:
IMPLEMENTATION OF REVISED GDC-4 j:
r
, e - Amendment 61 to the FSAR for the Comanche Peak Steam Electric Station (CPSES) provides for the implementation of the revised General Design Criterion-4 (GDC-4) in accordance with the limited-scope final rule of April 11, 1986 (51 Federal Register 12502). The-staff, in Amendment 8 L
to the Construction Permit for CPSES Unit I dated October 26. 1984, approved a partial exemption from GDC-4 to not install jet impingement shields for protection against postulated primary coolant pipe breaks.
These dynamic loading effects include pipe whip and jet impingement.
Since the technical justification had been reviewed and approved pre-viously by the staff in granting the partial exemption, the staff con-siders the justification associated with that exemption to be adequate also for demonstrating compliance with the revised GDC-4.
FSAR Amendment 61 includes modified design bases for both CPSES Units 1 and 2 to eliminate all dynamic effects associated with eight postulated Aj s -
primary loop breaks-(per loop) in both units. Accordingly, the staff has it determined that TU Electric has. demonstrated that the respective jet impingement shields, pipe whip restraints, and reactor cavity non-crushable insulation are no longer needed.
We have completed our evaluation of this issue and find the TU Electric design changes related to the implementation of the revised GDC-4 as des-cribed in FSAR Amendment 61' acceptable. Enclosed is our safety evaluation.
Sincerely, Q61g 87g (original signed by)
Q A
pg Christopher I. Grimes, Director h'. y(
Comanche Peak Project Division i
Office of Special Projects
~
DISTRIBUTION'
Enclosure:
Docket File AVietti-Cook JLyons As stated OSP' Reading File OGC-Bethesda HSchierling CPPD Reading File GMizuno DTerao cc: See next page PDR ACRS(10)
DNorkin LPDR RWarnick(10)
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CIGrimes JKeppler LChandler PFMcKee JAxelrad
- SEE PREVIOUS CONCURRENCE AD:CPPD:0Sh
- AD:CPPD:0SP
- CPPD:0SP AD:
D:0SP i
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06/ /87 '
06/ /87 06/J /87 06/%/87 1
sIA 849 Docket Nos. 50-445 and 50-446 Mr. William G. Counsil Executive Vice President Texas Utilities Electric Company 400 North Olive Street, L.B. 81 Dallas, Texas 75201
Dear Mr. Counsil:
SUBJECT:
IMPLEMENTATION OF REVISED GDC-4 Amendment 61 to the FSAR for the Comanche Peak Steam Electric Station (CPSES) provides for the implementation of the revised General Design Criterion 4 (GDC-4) in accordance with the limited-scope final rule of April 11, 1986 (51 Federal Register 12502). The staff, in Amendment 8 of October 26, 1984 to the Construction Permit for CPSES Unit 1, ap-proved a partial exemption from GDC-4 to not install jet impingement shields for protection.aoainst postulated primary coolant pipe breaks.
These dynamic loadina effects include pipe whip and jet impingement.
Since the technical justification had been reviewed and approved pre-viously by the staff in aranting the partial exemption, the staff con-siders the justification associated with that exemption to be adequate also for demonstratina compliance with the revised GDC-4.
FSAR Amendment 61 include:i-modified desian bases for both CPSES Units 1 and 2 to eliminate all dyaan,1c effects associated with eight postulated primary loop breaks (per lcop) in both units. Accordinaly, the staff has determined that TU Electric has demonstrated that the respective jet impinoement shields, pipe whip restraints, and reactor cavity non-crushable insulation are no longer needed.
We have completed our evaluation of this fssue and find the TU Electric desien changes related to the implementation of the revised GDC-4 as des-cribed in FSAR Amendment 61 acceptable. Enclosed is our safety evaluation.
j "9.. /
- Sincerely.
1 Christopher I. Grimes, Director Comanche Peak Project Division 4
Office of Special Projects 5
DISTRIBUTION' Encloscre:~i Docket File s
< AVietti-Cook JLyons As stated ( 0 OSP Readlau File ;0GC-Pethesda HSchierlina
<f, CPPD Readrice F11e' GMizuno DTerao ACRS(10)
DNorkin cc: See next page PDR RWarnick(10)
GGower LPDR CIGrimes
, JKeppler LChandler 4
PFMcKee
> ' JAxelrad AD:CPPD:0SP DTerac N,
AD:CPPD:0SP AD:CPPD:0SP VCPPD:0SP JLyons CIGrimes HSchierlin
- 06/l /87 k )
0 06/l/87s,t 06/ /87 C6/ /87 b
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UNITED STATES fx.
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I NUCLEAR REGULATORY COMMISSION j
j WASHING TON, D. C. 20555
/
o June 8, 1987 Docket Nos. 50-445 and 50-446 Mr. William G. Counsil Executive Vice President Texas Utilities Electric Company 400 North Olive Street, L.B. 81 Dallas, Texas 75201
Dear Mr. Counsil:
SUBJECT:
IMPLEMENTATION OF REVISED GDC-4 Amendment 61 to the FSAR for the Comanche Peak Steam Electric Station (CPSES) provides for the implementation of the revised General Design Criterion 4 (GDC-4) in accordance with the limited-scope final rule of April 11, 1986 (51 Federal Register 12502). The staff, in Amendment 8 to the Construction Permit for CPSES Unit I dated October 26, 1984, approved a partial exemption from GDC-4 to not install jet impingement shields for protection against postulated primary coolant pipe breaks.
These dynamic loading effects include pipe whip and jet impingement.
Since the technical justification had been reviewed and approved pre-viously by the staff in granting the partial exemption, the staff con-4 siders the justification associated with that exemption to be adequate also for demonstrating compliance with the revised GDC-4.
FSAR Amendment 61 includes modified design bases for both CPSES Units 1 and 2 to eliminate all dynamic effects associated with eight postulated primary loop breaks (per loop) in both units. Accordingly, the staff has determined that TV Electric has demonstrated that the respective jet impingement shields, pipe whip restraints, and reactor cavity non-crushable insulation are no longer needed.
We have completed our evaluation of this issue and find the TV Electric design changes related to the implementation.of the revised GDC-4 as des-cribed in FSAR Amendment 61 acceptable.
Enclosed is our safety evaluation.
Sincerely, CI W Christopher I. Grimes, Director Comanche Peak Project Division Office of Special Projects
Enclosure:
As stated cc: See next page
W. G. Counsil Comanche Peak Steam Electric Station Texas Utilities Electric Company Units 1 and 2 cc:
Thomas G. Dianan, Jr.
Asst. Director for. Inspec. Programs-Ropes & Gray Comanche Peak Project Division 225 Franklin Street U.S. Nuclear Reculatory Commission Boston, Massachusetts 02110 P. O. Box 1029 Granbury. Texas 76048 Robert A. Wooldridge, Esq.
Reaional Administrator, Reaion IV Worsham, Forsythe, Sampels &
U.S. Nuclear Reaulatory Commission Wooldridae 611 Ryan Plaza Drive, Suite 1000 2001 Bryan Tower, Suite 2500 Arlington, Texas 76011 Dallas, Texas 75201 Lanny A. Sinkin Mr. Homer C. Schmidt Christic Institute Director of Nuclear Services 1324 North Capitol Street Texas Utilities Electric Company Washington, D.C.
20002 Skyway Tower 400 North Olive Street, L.B. 81 Ms. Billie Pirner Garde Dallas, Texas 75201 Government Accountability Project Midwest Office Mr. Robert E. Ballard, Jr.
104 E. Wisconsin Avenue Director of Projects Appleton, WI 54915-8605 Gibbs and Hill, Inc.
11 Pen Plaza New York, New York 10001 David R. Picott, Esq.
Orrick, Herrinaton & Sutcliffe 600 Montaomery Street Mr. R. S. Howard San Francisco, California 94111 Westinahouse Electric Corporation P. O. Box 355 Anthony Z. Roisman, Esq.
Pittsburah, Pennsylvania 15230 Suite 600 1401 New York Avenue, NW i
Renea Hicks, Esq.
Washington, D.C. 20005 Assistant Attorney General Environmental Protection Division Robert Jablon i
P. O. Box 12548, Capitol Station Bonnie S. Blair Austin, Texas 78711 Spiegel & McDiarmid 1350 New York Avenue, NW Mrs. Juanita Ellis, President Washincton, D.C. 20005-4798 Citizens Association for Sound Energy 1426 South Polk Dallas, Texas 75224 Ms. Nancy H. Williams CYGNA 101 California Street, Suite 1000 San Francisco, California 94111 i
, _ - ~
I
Texas Utilities Electric Company Comanche Peak Electric Station Units I and 2 cc:
Joseph F. Fulbricht Fulbright & Jaworski 1301 McKinney Street Houston, Texas 77010 Mr. John W. Beck Vice President Texas Utilities Electric Company Skyway Tower 400 N. Olive Street, L.B. 81 Dallas, Texas 75201 Mr. Jack Reddina c/o Qatel Service Corp.
Texas Utilities Electric Company 7910 Woodmont Avenue Ste. 208 Bethesda, Maryland 20814 William A. Burchette, Esq.
Counsel for Tex-La Electric Cooperative of Texas Heron, Burchette, Ruckert & Rothwell
' Suite 700 1025 Thomas Jefferson Street, NW Wsshington, D.C.
20007 James M. McGaughy GDS Associates, Inc.
2525 Cumberland Parkway Suite 450 Atlanta, Georgia 30339 Administrative Judge Peter Bloch U.S. Nuclear Reaulatory Commission Washington, D.C.
20555 Elizabeth B. Johnson Administrative Judge Oak Ridae National Laboratory P. O. Box X Buildino 3500 Oak Ridge, Tennessee 37830 Dr. Kenneth A. McCollom 1107 West Knapp Stillwater, Oklahoma 74075 Dr. Walter H. Jordan Administrative Judae 881 West Outer Drive Oak Ridge, Tennessee 37830}