ML20235J192
| ML20235J192 | |
| Person / Time | |
|---|---|
| Site: | Comanche Peak  |
| Issue date: | 02/16/1989 |
| From: | Charemagne Grimes Office of Nuclear Reactor Regulation |
| To: | William Cahill TEXAS UTILITIES ELECTRIC CO. (TU ELECTRIC) |
| References | |
| NUDOCS 8902240206 | |
| Download: ML20235J192 (5) | |
Text
_____.
i' February 16, 1989
' Docket,Nos.-50-445 and 50-446 Mr. William J. Cahill, Jr.
Executive Vice President, Nuclear Texas Utilities -Electric Company
~400 No. Olive Street, L.B. 81 Dallas, Texas. -75201
Dear Mr. Cahill:
SUBJECT:
REQUEST FOR ADDITIONAL INFORMATION PERTAINING TO FSAR CHAPTER 8 REVIEW
.The: staff's review of Chapter 8 of the Comanche Peak FSAR.has resulted in identifying two areas for which additional. information is needed in order
.to complete the review..Please. provide the information described in the enclosure to this~ letter by March 17, 1989.
Should you have any questions regarding this request please contact either of our project managers, Mel Fields at (301)492-0765 or Melinda Malloy at (301)492-0738.
The reporting requirements contained in this' letter affect fewer than ten-respondents; therefore OMB clearance is not required under P. L.96-511.
Sincerely, (original signed by)
Christopher I. Grimes, Director Comanche Peak Project Division Office of Nuclear Reactor Regulation
Enclosure:
Request for Additional Information cc: See next page DISTRIBUTION.
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%,..j[/f Feb'ruary 16' 1989
- 1.... c Docket hos. 50-445 end 50-44C Mr. William J. Cahill', Jr.
Executive Vice President, Nuclear Texas. Utilities Electric Company 1400 fio. Olive Street, L.B. 81 Dallas, Texas '75201 Dear Mr. Cariii ;;
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SUBJECT:
-hE!!bE51 FCF ADDID 0t:AL INFORMATION PERTAINING TO FSAE CHAPTER 0 PEV1EW The sta'f's rc ia! of Chapta 8 of the Comanche Peak FSAR has resulted in
-identifying two areas for which additional information is needed in order tc complete the. review.
Please provide the information described in the
. enclosure to.tt:i! le aer by M6rch 17, 1989.
Should ycu have any questions regarding this request please contact either of our. project managers, Mel Fields at (301)492-0765 or Melinda Malloy at (3C1)LK-0738.
The. reporting requirements contained in this letter affect fewer than ten -
. respondents; therefere OMB clearance is not required under P. L.96-511.
Sincerely, CI M
Christopher I. Grimes, Director Comanche Peak Project Division Office of Nuclear Reactor Regulation
Enclosure:
Request for' Additional Information cc: See next page
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1 1
1 ENCLOSURE REQUEST FOR ADDITIONAL INFORMATION COMANCHE PEAK UNITS 1 AND 2 FSAR CHAPTER 8 1.
During preoperational testing, voltage levels of the ESF buses will be verified as the buses are lctded.
Transformer taps are set in accordance with the plant voltage analyses to obtain optimum voltage levels from no-load to fully loaded conditions.
Voltage levels will be compared with design analysis. The staff requests the applicant to provide, when available, a comparison of the analytically derived voltages to the test results to confirm that the analytical techniques and assumptions used can adequately predict electrical system voltages for expected supply voltage and sys-tem loading conditions.
Please provide a schedule for submitting this comparison.
2.
The second level of undervoltage protection at the 6.9kV (set at 87.7% of nominal) and 480Vac (set at 91.6% of nominal) safeguard buses start timers that will open the 6.9Ev bus preferred source breaker after 8 seconds if a sefety injection actuation signal is present. The applicant must verify that the tining of ESF loads sequenced onto the safeguard buses is consistent with the Comanche Peak DBA FSAR Chapter 15 analyses and is not affected by the 8-second tine delay.
If this can be acceptably shown, the staff will re-quire tbct 0 seconds be used as the upper allowable limit for the periodic testing and calibration of the timers.
3 K. J. Cahill, Jr.
Comanche Peak Steam Electric. Station LTexas. Utilities ; Electric Company Units 1 and 2.
CC Jack R. Newmen, Esq.
. Asst.' Director for Inspec. Programs Newman & Holtzinger, P.C.
Comanche Peak Project Division Suite 4000' U.S.- Nuclear Regulatory. Commission 1615 L Street, N.W.~
P. 0.. Box 1029' Washington, D.C.:20036 Granbury, Texas 76048 Robert A.'Wooldridge,-Esq.
Regional' Administrator, Region IV Worsham, Forsythe, Sampels &
V.S. Nuclear Regulatory Commission
.Wooldridge-611 Ryan Plaza Drive, Suite 1000 2001 Bryan Tower, Suite 2500 Arlington, Texas '76011 1 Dallas, Texas 7f201
.Lanny A. Sinkin Mr. Homer C. Schmidt Christic Institute Director of huclear. Services 1324 North Capitol Street ~
Texas.Utili. ties Elec.rt-Company Washington, D.C.
20002 Skyway Tower 4Le horth 0: 4t E t n'", L.B. El Ms. Billie Pirner Garde, Esq.
Dallas,-Texas 752tu Garde Law Office 104 East Wisconsin Avenue Mr.
R.. W. Actie; Appleton, Wisconsin 54911 Stone &' Webster Comanche-Peak Steam Electric Stati.on David R. Pigott, Esq.
P. O. Box'1002 Orrick, Herrington & Sutcliffe Glen Rose,~ Texas 76043 600 Montgomery Street San ~ Francisco, California 94111 Mr. J. L. Vota Westinghouse Electric Corporation E. F. Ottney P. O. Box 355 P. O. Box 1777 Pittsburgh, Pennsylvania 15230 Glen Rose, Texas 76043 Susan M. Theitr*
George A. Parker, Chairaan Assistant Attorney General Public Utility Committee Environmental Protection Division Senior Citizens Alliance of P.'0. Box 12548, Capitol Station Tarrant County, Inc.
Austin, Texas 78711-1548 6048 Wonder Drive Fort Worth, Texas 76133 Mrs. Juanita Ellis, Presider,t Citizens Association for Sound Energy 1426 South Polk Dallas, Texas 75224 Ms. Nancy H. Williams CVGNA Energy Services l
2121 N. California Blvd., Suite 390 Walnut Creek, CA 94596 l
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J. Cahill, Jr. Comanche Peak Electric Station Texas Utilities Electric Company Units 1 and 2
-cc:
Jcseph F. Fulleright Fult>right & Jawcrski 1301 McKinney Street
" Houston, Texas 77010 Roger D. Walker Manager, Nuclear Licensing Texas Utilities Electric Company Skyway Tower 400 North Olive Street, L.B. 81 Dallas, Texes 75201 Texas Utilities Electiit Companj c/c Bethesc5 Licensing 3 Metro Center, Suite 610 Bethesda, Maryland 20914 Williar. A. Burchette. Esc.
Counsel for Tex-La Electric Cooperative of Texas lie r u., burcher,te, Rucsert & Rothweli Suite 700 1020 Thomas Jefferson Street, NW Washington, D.C.
20007 GDS ASSOCIATES, IIC.
Suite 720 1850 Parkway Place Marietta, Georgia 30067-8237 i
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