ML20136H297
| ML20136H297 | |
| Person / Time | |
|---|---|
| Site: | Comanche Peak  |
| Issue date: | 08/14/1985 |
| From: | Noonan V NRC - COMANCHE PEAK PROJECT (TECHNICAL REVIEW TEAM) |
| To: | Counsil W TEXAS UTILITIES ELECTRIC CO. (TU ELECTRIC) |
| References | |
| NUDOCS 8508200259 | |
| Download: ML20136H297 (5) | |
Text
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AUG 141985 Docket Nos.: 50-45 and 50-446 Mr. W. G. Counsil Executive Vice President Texas Utilities Generating Company 400 N. Olive Street, L. B. 81 Dallas, Texas 75201
Dear Mr. Counsil:
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Subject:
Request for Additional Information Concerning Protection from Jet Impingment Outside Containment
Reference:
TUGC0 letter TXX-4413, J. Beck to B. Youngblood, dated February 14, 1985 In the referenced response to a staff question concerning the impact of super-heated steam released by a main steam line break outside containment, you noted that the effects of jet impingement due to a break in the superpipe region of the main steam and feedwater pipe had not been considered. During a recent telephone conference call, members of your staff advised that some safety-related cables for the "A" train and numerous safety-related cables for the "B" train are located in the immediate vicinity of the main steam lines. This may violate the major goals of the staff's pipe break criteria, which is to separate safety-related equipment from high energy lines whenever possible.
In order for us to evaluate the effects of jet impingement, we require a response to the enclosed request for additional information. Please advise Mr. S. B. Burwell, of my staff, of your schedule for responding to these questions.
Should you you have questions concerning this request for additional information, Mr. Burwell will arrange conferenc? calls or a meeting with the staff reviewers, as necessary.
Sincerely, Vincent S. Noonan, Director for Comanche Peak Project Division of Licensing
Enclosure:
As stated DISTRIBUTION:
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AUG 141985 Docket Nos.: 50-445 and 50-446 Mr. W. G. Counsil Executive Vice President Texas Utilities Generating Company 400 N. Olive Street, L. B 81 Dallas, Texas 75201
Dear Mr. Counsil:
Subject:
Request for Additional Information Concerning Protection from Jet Impingment Outside Containment
Reference:
TUGC0 letter TXX-4413, J. Beck to B. Youngblood, dated February 14, 1985 In the referenced response to a staff question concerning the impact of super-heated steam released by a main steam line break outside containment, you noted that the effects of jet impingement due to a break in the superpipe region of the main steam and feedwater pipe had not been considered. During a recent telephone conference call, members of your staff advised that some safety-related cables for the "A" train and numerous safety-related cables for the "B" train are located in the insnediate vicinity of the main steam lines.
This may violate the major goals of the staff's pipe break criteria, which is to separate safety-related equipment from high energy lines whenever possible.
In order for us to evaluate the effects of jet impingement, we require a response to the enclosed request for additional information. Please advise Mr. S. B. Burwell, of my staff, of your schedule for responding to these questions.
Should you you have questions concerning this request for additional information, Mr. Burwell will arrange conference calls or a meeting with the staff reviewers, as necessary.
Sincerely, j
oo ector for Coma che Peak Project Division f Licensing
Enclosure:
As stated cc:
See next page
r
. G. Counsil Comanche Peak Steam Electric Station Texas Utilities Generating Company Units 1 and 2 cc:
Nicholas S. Reynolds, Esq.
Resident Inspector / Comanche Peak Bishop, Liberman, Cook, Nuclear Power Station Purcell & Reynolds c/o U.S. Nuclear Regulatory Commission 1200 Seventeenth Street, NW P. O. Box 38 Washington, D.C.
20036 Glen Rose, Texas 76043 Robert A. Wooldridge, Esq.
Regional Administrator, Region IV Worsham, Forsythe, Sampels &
U.S. Nuclear Regulatory Comission Wooldridge 611 Ryan Plaza Drive, Suite 1000 2001 Bryan Tower, Suite 2500 Arlington, Texas 76011 Dallas, Texas 75201 Mr. Homer C. Schmidt Larry A. Sinkin M.inager - Nuclear Services 3022 Porter Street, NW #304 Texas Utilities Generating Company Washington, D.C.
20008 Skyway Tower 400 North Olive Street, L.B. 81 Dallas, Texas 75201 Mr. Robert E. Ballard, Jr.
Ms. Billie Pirner Garde Director of Projects Citizens Clinic Director Gibbs and Hill, Inc.
Government Accountability Project 11 Pen Plaza 1901 Que Street, NW New York, New York 10001 Washington, D.C.
20009 David R. Pigott, Esq.
Mr. A. T. Parker Orrick, Herrington & Sutcliffe Westinghouse Electric Corporation 600 Montgomery Street P. O. Box 355 San Francisco, California 94111 Pittsburgh, Pennsylvania 15230 Anthony Z. Roisman, Esq.
Renea Hicks, Esq.
Trial Lawyers for Public Justice Assistant Attorney General 2000 P. Street, NW Environmental Protection Division Suite 611 P. O. Box 12548, Capitol Station Washington, D.C.
20036 Austin, Texas 78711 Nancy E. Wiegers Mrs. Juanita Ellis, President Spiegel & McDianned Citizens Association for Sound Energy 1350 New York Avenue, NW 1426 South Polk Washington, D.C.
20005-4798 Dallas, Texas 75224 Ms. Nancy H. Williams CYGNA 101 California Street San Francisco, California 94111
9 Texas Utilities Electric Company Comanche Peak Electric Station Units 1 and 2 cc:
Resident Inspector - Comanche Peak c/o U.S. Nuclear Regulatory Commission P. O. Box 1029 Granbury, Texas 76048 Mr. John W. Beck Manager - Licensing Texas Utilities Electric Company Skyway Tower 400 N. Olive Street, LB#81 Dallas, Texas 75201 Mr. Jack Redding Licensing Texas Utilities Generating Company 4901 Fairmont Avenue Bethesda, Maryland 20814 William A. Burchette, Esq.
Heron, Burchette, Ruckert & Rothwell Suite 700 1025 Thomas Jefferson Street, NW Washington, D.C.
20007 Mr. James McGaughy Southern Engineering Company of Georgia 1800 Peachtree, Street, NW Atlanta, Georgia 30367-8301
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i ENCLOSURE REQUEST FOR ADDITIONAL INFORMATION COMANCHE PEAK NUCLEAR POWER PLANT UNITS 1 AND 2 AUXILIARY SYSTEMS BRANCH Q010.34 In your response to question Q0140.1, subsection 1.d, you stated that jet loads were not considered in piping tunnels that contain break exclusion regions of main _ steam lines. You also stated, in a conference call on July 24, 1985 that some safety-related cables for train "A" and numerous safety-related cables for train "B" are located in the famediate vicinity of the main steam lines.
In order for us to complete our review, we need the identification of safety systems that can be affected by jet impingment resulting from a one square foot non-mechanistic break in the superpipe area of the high energy lines. Your response should demonstrate that no single break will result in the loss of the safe shutdown capability for the plant.
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