ML20027D519

Supplemental Answer to Sunflower Alliance 820430 Second Set of Interrogatories,Interrogatory 56,per ASLB 821019 Order. Certificate of Svc Encl

ML20027D519
Person / Time
Site:	Perry
Issue date:	11/01/1982
From:	Willmore R CLEVELAND ELECTRIC ILLUMINATING CO., SHAW, PITTMAN, POTTS & TROWBRIDGE
To:	SUNFLOWER ALLIANCE
References
NUDOCS 8211040434
Download: ML20027D519 (7)

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'82 NOV -3 A10 30 UNITED STATES OF AMERICA NUCLEAR REGULATORY COMMISSION [hkiNhfik DANCH Before the Atomic Safety and Licensing Board In the Matter of )

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THE CLEVELAND ELECTRIC ) Docket Nos. 50-440 ILLUMINATING COMPANY, ET AL. ) 50-441

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(Perry Nuclear Power Plant, )

Units 1 and 2) )

4 APPLICANTS' SUPPLEMENTAL ANSWER PURSUANT TO ORDER OF OCTOBER 19, 1982 (CONCERNING A MOTION TO COMPEL ANSWERS ABOUT EMERGENCY PLANNING)

By Order of October 19, 1982, the Licensing Board gave Applicants the option of answering Interrogatory #56 of Sunflower Alliance, Inc. et al. (" Sunflower") Second Set of Interrogatories, l

dated April 30, 1982, or stipulating that they will not claim credit as part of their potasssium iodide defense for any iodine mitigation devices. In light of the regulatory developments cited i

by the Licensing Board in its Order, at 2-3, Applicants are un-willing at this time to file such a stipulation. Accordingly, l

I l Applicants will answer the Interrogatory. Applicants do not, I

however, wish their answer to be construed to mean that they will not file a stipulation in the future if such is deemed appropriate.

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56. NCRP Report No'. 55 at pp. 16-17 indicates that engineered safeguards at reactors may reduce the release of radioiodine during a nuclear accident. For each safeguard listed therein (and below), describe the system, if any, that will be in place at PNPP, explain how the system works to reduce iodine release, and indicate how efficient said system is at reducing radioiodine levels.

(1) various methods for condensing the radiciodine-bearing steam that would be released to the reactor building.

(2) enclosing the reactor in a sealed containment structure.

(3) recirculating the contained atmosphere through absorbents and filters that remove radioiodines.

(4) operation of sprays containing chemicals capable of absorbing the radiciodines and reducing their concen-tration in the atmosphere of the containment building.

Response

(1) Radioiodine Steam Condensation: The two safeguard systems that will condense radiciodine-bearing steam discharged from the reactor vessel are the suppression pool and the contain-ment sprays. A description of these systems and their condensation capabilities is contained in PNPP FSAR S6.2.2. Applicants do not have data on the efficiency of these systems at reducing overall radioiodine levels.

(2) Sealed Containment Structure: A description of the containment structure for PNPP is contained in PNPP FSAR S3.8.

The containment barriers to iodine release include the reactor l

pressure vessel, the drywell, and the steel containment. Iodine isotopes would have to pass through each barrier in turn before release outside the sealed containment would be possible. This multiple barrier system slows the migration of iodine isotopes and permits radioactive decay of the isotopes within the sealed containment. The efficiency of iodine removal varies with the particular iodine isotope. However, all leakage'from the sealed containment is processed through the Annulus Exhaust Gas Treatment System described in part (3) below.

(3) Filtration of Recirculated Containment Atmosphere:

While this safeguard system is typical for pressurized water reactors, it is not a design feature incorporated in boiling water reactors, and, therefore, is not included in the PNPP ventilation design. However, leakage from the PNPP containment to the secondary containment is treated by a highly efficient iodine filtration system, the Annulus Exhaust Gas Removal System.

A system description., how it reduces iodine release, and its removal efficiency are contained in PNPP FSAR 56.5.

(4) Containment Spray System Chemical Additive: The contain-ment spray system does not incorporate the capability for injecting chemical additives; nor do Applicants believe chemical additives to be necessary in light of the engineered safeguards installed at PNPP.

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Respectfully submitted, SHAW, PITTMAN, POTTS & TROWBRIDGE By:

Jay E. Silberg, P.C.

Robert L. Willmore Counsel for Applicants <

1800 M Street, N.W..

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Dated: November 1, 1982 '-

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CLEVELAND ELECTRIC ILLUMINATING COMPANY CLEVELAND, OHIO AFFIDAVIT Frank R. Stead, being duly sworn according to law, deposed and says that he is Manager, Nuclear Engineering Department, The Cleveland Electric IlluminatingCompany, and that the facts set forth in the foregoing Applicants' Answer to Sunflower Alliance Inc., et. al. Second Set of Interrogatories #56, dated April 30,1982, is true and correct to the best of his knowledge, information and belief.

Sworn to and subscribed before me this 8 day of M 3

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_ l EAROLINE M. WILDE Rctzry Public, State of Ohio My Commission Expires April 17,1985

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1. ,'a UNITED STATES OF AMERICA NUCLEAR REGULATORY COliMISSION

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Before the Atomic Safety and Licensing Board I' .I t .

, In the Matter of )

, )

THE CLEVELAND ELECTRIC , ) Docket Nos. 50-440 ILLUMINATING COMPANY, _E _T _A _L . ) 50-441

)

(Perry Nuclear Power Plant, )

Units 1 and 2) )

CERTIFICATE OF SERVICE This is to certify that copies of the foregoing " Applicants' Supplemental Answer Pursuant to Order of October 19, 1982 (Con-cerning a Motion to Compel Answers About Emergency Planning),"

were served by deposit in the U.S. Mail, First Class, postage prepaid, this 1st day of November, 1982, to all those on the attached Service List.

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a W r-Robert L. Willmore Dated: November 1, 1982

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UNITED STATES OF AMERICA NUCLEAR REGULATORY COMMISSION Before the Atomic Safety and Licensing Board In the Matter of  : *

) *

) .

THE CLEVELAND ELECTRIC. ) .Do'cket Nos. 50-440 ILLUMINATING COMPANY . ) -

50-441

)

(Parry Nuclear Power Plant, ) ,

Units 1 and 2) )

SERVICE LIST Pater B. Bloch, Chairman Atomic S.;fety and Licensing Atomic Safety and Licensing Board Appeal Board Panel U.S-. Nuclear Regulatory Commission U.S. Nuclear Regulatory Commission Wachington, D.C. 20555 Washington, D.C. 20555 Dr. Jerry R. Kline Docketing and Service Section Atomic Safety and Licensing Board Office of the Secretary U.S. Nuclear Regulatory Commission U.S. Nuclear Regulatory Commission Washington, D.C. 20555 Washington, D.C. 20555 Mr. Frederick J. Shon James M. Cutchin, IV, Esquire Atomic Safety and Licensing Board Office of the Executive U.S. Nuclear Regulatory Commission Legal Director Wcchington, D.C. 20555 U.S. Nuclear Regulatory Commission Washington, D.C. 20555 Christine N. Kohl, Chairman Atomic Safety and Licensing Ms. Sue Hiatt Appeal Board OCRE Interim Representative U.S. Nuclear Regulatory Commission 8275 Munson Avenue Wcchington, D.C. 20555 Mentor, Ohio 44060 Dr. John H. Buck Daniel D. Wilt, Esquire Atomic Safety and Licensing Post Office Box 08159 i Appeal Board Cleveland, Ohio 44108 U.S. Nuclear Regulatory Commission Washington, D.C. 20555 Donald T. Ezzone, Esquire Assistant Prosecuting Attorney Gary J. Edles, Esquire Lake County Administration Center Atomic Safety and Licensing 105 Center Street l

Appeal Board Painesville, Ohio 44077 U.S. Nuclear Regulatory Commission i Washington, D.C. 20555 John G. Cardinal, Esquire l' Prosecuting Attorney j

Atomic Safety and Licensing Ashtabula County Courthouse Board Panel , Jefferson, Ohio 44047 l

U.S. Nuclear Regulatory Commission Washington, D.C. 20555 Terry Lodge, Esquire 915 Spitzer Building Toledo, Ohio 43604