ML19211A246

Response to Jf Doherty Sixth Set of Interrogatories.Includes Info on Inboard Sys Leakage,Closure of Isolation Valves in Containment Purge Sys & PSAR Drawing 1.2-8.Affidavit & Certificate of Svc Encl

ML19211A246
Person / Time
Site:	Allens Creek File:Houston Lighting and Power Company icon.png
Issue date:	11/13/1979
From:	Copeland J, Newman J BAKER & BOTTS, HOUSTON LIGHTING & POWER CO., LOWENSTEIN, NEWMAN, REIS, AXELRAD & TOLL
To:	Doherty J DOHERTY, J.F.
References
NUDOCS 7912170246
Download: ML19211A246 (7)

Text

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'N( ;,h UNITED STATES OF AMERICA 1 '7 ,, s NUCLEAR REGULATORY COMMISSION . . ; 7 't . .i q,- C.

BEFORE THE ATOMIC SAFETY AND LICENSING BOARD . ' ' , ' .y

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In the Matter of S s -

S HOUSTON LIGHTING & POWER S \'~~-

COMPANY S Docket No. 50-466 S

(Allens Creek Nuclear S Generating Station, Unit S No. 1)

APPLICANT 'S RESPONSE TO JOHN F. DOHERTY'S SIXTH SET OF INTERROGATORIES TO HOUSTON LIGHTING &

POWER COMPANY In response to the interrogatories propounded by John F. Doherty, Houston Lighting & Power Company (Applicant) answers as follows :

INTERROGATORY NO. 1 How much leakage at the inboard system of the MSIV control system will be allowed applicant in standard cubic feet per hour?

ANSWER:

The NRC has limited leakage past Main Steam Isolation Valves to 11.5 SCFH.

INTERROGATORY NO. 2:

Will ACNGS include a valve stem leakage collection system that directs leakage to an area served by the standby gas treatment system (SGTS) ?

ANSWER:

Every valve 2 1/2" or greater inside the drywell is connected to a seal leak collection system with leakage directed to the drywell sump. The drywell is served by the SGTS. Outboard Main Steam Isolation 1591 213 7912170 L eF6

valves have a seal leak collection system which directs leakage to an area served by the ECCS Filtered Exhaust System.

INTERROGATORY NO. 3:

Are the isolation valves in the containment purge system new designed to close within five seconds?

ANSWER:

The maximum closure time for the containment ventilation (purge) air supply and exhaust is five seconds. ( ACNGS PSAR Table 6.2-12)

INTERROGATORY NO. 4:

If not, what are their closing times as designed?

ANSWER:

Not applicable.

INTERROGATORY NO. 5:

Has Applicant committed to the General Electric resolution of the seven problems listed on page 3 of the

" Enclosure" to the letter from Steven A. Varga, Chief of Light Water Reactors , Branch 4, to G. W. Opera, Jr., of Applicant, dated July 21, 1978, and subject: " Outstanding Safety Review Issues - Allens Creek NGS, Unit l?"

ANSWER:

Applicant has committed to the General Electric Resolution for the seven areas listed on page 3 of the enclosure of the letter from Steven A. Varga to G. W.

Oprea, Jr., dated July 24, 1978. (See ACNGS PSAR, Appendix K, pages KO3 2. 2-1,2. )

INTERROGATORY NO. 6:

Has Applicant committed to design "these supparts for the combined load effects of pipe rupture loads in combination with loads resulting from the SSE and other faulted condition leads described in Table 3.9.7 of the PSAR? (This is item 11.6 (2) on page 6 of the S. Varga letter cited in Interrogatory No. 5, supra.)

1591 214

ANSWER:

Table 3.9-7 was corrected by amendment 47 to the PSAR to include pipe rupture loads as part of the Applicant's commitment to design for a faulted plant condition.

INTERROGATORY NO. 7:

Referring to question five (infra. ) if not, state which is not in commitment and give every reason for not having done so, or for any delay in compliance.

ANSWER:

Not applicable.

INTERPOGATORY NO. 8:

How does Applicant conclude: ". . . it would be impossible for impeller missiles from this pump to strike the combustible gas control system components?"

(See Applicant's response to JFD, Second Set of Inter-rogatories to HL&P, and the assumption if the answer is correct.)

ANSWER:

As shown by PSAR drawing 1.2-8, the combustible gas control system is outside the 5 ft. thick reinforced concrete drywell while the recirculation pumps are within the drywell. Further, the combustible gas control system components are above elevation 207.25 ' while the recirculation pump impeller is below elevation 135.00 ' .

The location of this system so far above the recirculation pumps plus the drywell wall barrier between these components makes it impossible for a potential missile to intersect the combustible gas control system components.

Respectfully submitted, 5

J. Gregory Copeland C. Thomas Biddle, Jr.

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Charles G. Thrash, Jr.

3000 One Shell Plaza Houston, Texas 77002 1591 215

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LOWENSTEIN, NEWMAN, REIS, Jack R. Newman AXELRAD & TOLL Robert H. Culp 1025 Connecticut Avenue, N.W. 1025 Connecticut Avenue, N.W.

Washington, D.C. 20036 Washington, D.C.

ATTORNEYS FOR APPLICANT HOUSTON LIGHTING & POWER COMPANY STATE OF TEXAS S 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 Sixth Set of Inter-rogatories to Houston Lighting & Power Company in his capacity as Supervising Engineer for Housten Lighting &

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

/ ,, [ .

f'Jon G. White SUBSCRISED AND SWORN TO BEFORE bE by the said Jon G. White on this /3Xday of November, 1979.

OLQM NOTARY PUBLIC IN ANY FOR HARRIS COUNTY, T E X A S 1591 216

_4_

UhITED STATES OF AMERICA NUCLEAR REGULATORY COMMISSION 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 CERTIFICATE OF SERVICE I hereby certify that copies of the foregoing Applicant's Response to John F. Doherty's Sixth Set of Interrogatories to Houston Lighting & Power Company in the above-captioned proceeding were served on the following by deposit in the United hand-delivery States this 13& mail,[costage day of hov W u ,prepaid, 1979. or by Sheldon J. Wolfe, Esq. , Chairman Richard Lowerre, Esq.

Atomic Safety and Licensing Assistant Attorney General Board Panel for the State of Texas U.S. Nuclear Regulatory Commission P. O. Box 12548 Washington, D. C. 20555 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 7741S 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 Ccmmission Ccmmission 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 1591 217

Steve Schinki, Esq. Carolina Conn Staff Counsel 1414 Scenic Ridge U.S. Nuclear Regulatory Commission Houston, Texas 77043 Washington, D. C. 20555 Elinore P. Cumings John F. Doherty Route 1, Box 138V 4327 Alconbury Street Rosenberg, Texas 77471 Houston, Texas 77021 Stephen A. Doggett, Esq.

Robert S. Framson P. O. Box 592 Madeline Bass Framson Rosenberg, Texas 77471 4822 Waynesboro Drive Houston, Texas 77035 Robin Griffith 1034 Sally Ann Carro Hinderstein Rosenberg, Texas 77471 8739 Link Terrace Houston, Texas 77025 Leotis Johnston 1407 Scenic Ridge D. Marrack Houston, Texas 77043 420 Mulberry Lane Bellaire, Texas 77401 Rosemary N. Lemmer 11423 Oak Spring Brenda McCorkle Houston, Texas 77043 6140 Darnell Houston, Texas 77074 Kathryn OttJ Route 2, Box 62L F. H. Potthoff, III Richmond, Texas 77469 7200 Shady Villa, #110 Houston, Texas 77055 Frances Pavlovic 111 Datonia Wayne E. Rentfro Bellaire, Texas 77401 P. O. Box 1335 Rosenberg, Texas 77471 Charles Perez 1014 Montrose James M. Scott, Jr. Houston, Texas 77019 8302 Albacore Houscon, Texas 77074 William Schuessler 5810 Darnell Brian L. Baker Houston, Texas 77074 1118 Montrose Houston, Texas 77019 Patricia L. Strelein Route 2, Box 395C Dorothy F. Carrick Richmond, Texas Box 409, Wagon Rd. Rfd. #1 Wallis, Texas 77485 1591 2l8

Glen Van Slyke 1739 Marshall Houston, Texas 77098 Donald D. We' aver P. O. Drawer V Simonton, Texas 77476 Connie Wilson 11427 Oak Spring Houston, Texas 77043 O ()]

C. Thomas Biddle, Jr. (/

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