ML19225A566

Houston Lighting & Power Response to Jf Doherty Second Set of Interrogatories.Certificate of Svc Encl

ML19225A566
Person / Time
Site:	Allens Creek File:Houston Lighting and Power Company icon.png
Issue date:	06/12/1979
From:	Copeland J, Newman J, Jason White BAKER & BOTTS, HOUSTON LIGHTING & POWER CO., LOWENSTEIN, NEWMAN, REIS, AXELRAD & TOLL
To:
References
NUDOCS 7907190586
Download: ML19225A566 (9)

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NRC PUBLIC DOCU3 EXT ROOM S ON. 37B P-5 d%

UNITED STATES OF AMERICA Y$ess sv NUCLEAR REGULATORY COMMISSION D BEFORE THE ATOMIC SAFETY AND LICENSING BOARD In the Matter of S S

HOUSTON LIGHTING & POWER COMPANY S Docket No. 50-466 S

(Allens Creek Nuclear Generating S Station, Unit 1) S APPLICANT'S RESPONSE TO JC 1 F . DOHERTY'S SECOND SET OF

_ INTERROGATORIES TO HOUSTON LIGHTING & POWER COMPAFY In response to the interrogatories propounded by John F. Doherty, Houston Lighting & Power Company (" Applicant")

answers as follows:

INTERROGATORY NO. 1: Does Applicant's restraint of cooling pipe whip safety feature also prevent missiles from the pump impeller from striking combustible gas control system components? Explain.

ANSWER:

A. Applicant objects to this interrogatory on the grounds that the pump in question is not identified. Assuming that the question is related to the recirculation pump impeller, Applicant can answer that it would be impossible for impeller missiles frem this pump to strike the combustible gas concrol system componenrs. In addition to protection provided by restraints (PSAR, p. 3.5-5g), all combustible gas system kl0- 21/ '1907190D3f &

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components are outside the 5 foot thick reinforced concrete dry well while the recirculation pumps are within the dry well. Furthermore, combustible gas system components are above elevation 207.25' while the recirculation pumps are at elevation 130.00'.

Applicant is not aware of any other pumps which could produce missiles that would threaten the ccmbustible gas control system.

B. ACNGS Preliminary Safety Analysis Report, Drawings 1.2-8 and 1.2-9. This document is available at the public document room in Sealy, or at the Applicant's Energy Develop-ment Complex.

C. None.

D. Jon G. White, Supervising Engineer, Houston Lighting & Power Company.

E. None planned.

F. None.

INTERROGATORY NO. 2: If the new Regulatory Guide 1.7 re-quires a 2% limit on containment hydrogen in the event of LOCA, what is the minimum time required for hydrogen to reach 2% by volume in the containment building?

ANSWER:

A. The hydrogen concentration inside the containment does not reach 2% by volume in the event of a LOCA.

4 / 'o 212 B. ACNGS Preliminary Safety Analysis Report, Figure 6.2-29. This document is available in the public document room in Sealy, or at Applicant's Energy Development Complex.

C. None.

D. Jon G. White, Supervising Engineer, Houston Lighting & Power Company.

E. None planned.

F. None.

INTERROGATORY NO. 3: What is the minimum time in which con-tainment hydrogen would reach 4% by volume; in the most severe LOCA?

ANSWER:

A. The hydrogen concentration inside the containment does not reach 4% by volume in the most severe LOCA.

B. ACNGS Preliminary Safety Analysis Report, Figure 6.2-29. This document is available in the public document room in 'ealy, or at Applicant's Energy Development Complex.

C. None.

D. Jon G. White, Supervising Engineer, Houston Lighting & Power Company.

E. None planned.

F. None.

INTERRCGATORY NO. 4: What has Applicant done to make the Residual Heat Removal System capable of performing its task of keeping the peak pressure Suppression pool temperature 419 dij at or below 185' F, as required on Page :-3 of the Supple-ment #1 of the Safety Evaluation of ACNGS #1 and #2.

ANSWER:

A. The matter discussed on page I-3 of ACNGS SER Supplement No. 1 relates to the question of whether or not the Residual Heat Removal System complies with the single-failure criteria. Applicant has proven that the system can operate assuming a single-failure, as indicated by page 5-8 of Supplement No. 2 to the ACNGS SER. No design changes were made to the RHR system.

B. ACNGS Safety Evaluation Report, Page 5-8. A copy is available at the public document room in Sealy, or at Applicant's Energy Development Complex.

C. None.

D. Jon G. White, Supervising Engineer, Houston Lighting & Power Company.

E. None planned.

F. None.

INTER.'LGATORY NO. 5: Is the E=ergency Core Cooling System an "all or nothing" operating system?

ANSWER:

A. Applicant objects to this interrogatory on the grounds that it does not know ; hat is meant by the term "all or nothing system". ,

l) 214 B. None.

C. Not applicable.

D. None.

E. None.

F. None.

INTERROGATORY NO. 6: What is the content of Pages 6.3-17 to 6.3-27 of the Preliminary Safety Analysis Report (PSAR),

marked " deleted", "see GESSAR" on March 12, 1979?

ANSWER:

A. Former pages 5.3-17 through 6.3-27 discussed ECCS calculations for Allens Creek based on the ECCS Interim Acceptance Criteria of June, .971. This page was mo dified on July 14, 1978, not March 1. 1979.

B. Allens Creek PSAR, forner pages 6.3-17 through 6.3-27. These pages are available for inspection and copying at the Applicant's Energy Development Complex.

C. None.

D. Jon G. White, Supervising Engineer, Houston Lighting & Power Company.

E. None planned.

F. None.

'/9 2/S

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Respectfully submitred,

/487&

OF COUNSEL: / Gregoff peland C. ThomaV die, Jr.

BAKER & BOTTS harles G. Thrash, Jr.

3000 One Shell Plaza 3000 One Shell Plaza Houston, Texas 77002 Houston, Texas 77002 LOWENSTEIN, NEWMAN, REIS, Jack R. Newman AXELRAD & TOLL Robert H. Culp 1025 Connecticut Ave., N.W. 1025 Connecticut Ave. , N.W.

Washington, D. C. 20036 Washington, D. C. 20036 ATTORNEYS FOR APPLICANT HOUSTON LIGHTING & POWER COMPM4Y 4/9 (9/ ,6

ST).TE OF TEXAS S COUNTY OF HARRIS S BEFORE ME, THE UNDERSIGNED AUTHORITY, on this day personally appeared Jon G. White, who upon his oath stated that he has answered the foregoing Houston Lighting & Power Company's Response to John F. Doherty's Second Set of Interrogatories to Houston Lighting & Power Company in his capacity as Supervising Engineer for Houston Lighting &

Power Ccmpany, and all statements contained therein are true and correct to the best of his knowledge and belief.

A b Jon GT White SUBSCRIBED AND SWORN TO BEFORE ME by the said Jon G. White, on this /2 4 day of , 1979.

W WW Netary Public in and for Harris County, Texas 419 217

UNITED STATES OF AMERICA NUCLEAR REGULATORY COMMISSION BEFORE THE ATOMIC SAFETY AND LICENSING BOARD In the Matter of S S

HOUSTON LIGHTING & POWE9 COMPANY S Docket No. 50-466 S

(Allens Creek Nuclear Generating S Station, Unit 1) S CERTIFICATE OF SERVICE I hereby certify that copies of the foregoing Applicant's Response to John F. Doherty's Second Set of Interrogatories in the above-captioned proceeding were served on the following by deposit in the United States m y l, postage prepaid, or by hand-delivery thi*c /2)# day of Uh nf , 1979.

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heldon J. Wolfe, Esq., Chairman Richard Lowerra, Esq.

tomic Safety and Licensing Assistant Attorney General Board Panel for the State of Texas U.S. Nuclear Regulatory Commission P. O. Box 12543 Washington, D. C. 2';555 Capitol Station Austin, Texas 78711 Dr. E. Leonard Cheatum Route 3, Box 350A Hon. Charles J. Dusek Watkinsville, Georgia 30677 Mayor, City of Wallis P. O. Box 312 Mr. Gustave A. Linenberger Wallis, Texas 77485 Atomic Safety and Licensing Board Panel Hon. Leroy H. Grebe U.S. Nuclear Regulatory Commission County Judge, Austin County Washington, D. C. 20555 P. O. Box 99 Bellville, Texas 77418 Chase R. Stephens Docketing and Service Section Atomic Safety and Licensing Office of the Secretary of the Appeal Board Commission U.S. Nuclear Regulatory U.S. Nuclear Regulatory Commission Commissica Washington, D. C. 20555 Washington, D. C. 20555 R. Gordon Gooch, Esq. Atomic Safety and Licensing Baker & Botts Board Panel 1701 Pennsylvania Avenue, N. W. U.S. Nuclear Regulatory Washington, D. C. 20006 Commission Washington, D. C. 20555 419 218

Steve Schinki, Esq.

Staff Counsel U. S. Nuclear Regulatory Commission Washington, D. C. 20555 John F. Doherty 4438 1/2 Leeland Houston, Texas 77023 Madeline Bass Framson 4822 Maynesboro Drive Houston, Texas 77035 Robert S. Framson 4822 Waynesboro Drive Houston, Texas 77035 Carro Hinderstein 8739 Link Terrace Houston, Texas 77025 D. Marrack 420 Mulberry Lane Bellaire, Texas 77401 Brenda McCorkle 614] Darnell Houston, Texas 77074 F. H. Potthoff, III 1814 Pine Village Houston, Texas 77080 Wayne E. Rentfro P.O. Box 1335 Rosenberg, Texas 77471 James M. Scott, Jr.

8302 Albacore Houston, Texas 77074 s 4f J4 Greg y opeland

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