ML20133D782

Forwards Evaluation of 850219 & 0326 Responses to Sser 4, Confirmatory Issue 56 Re Containment Purge Programs.Plan Addressing Purge Program Provides Adequate Data Base to Support Purge Criteria.Issue Resolved

ML20133D782
Person / Time
Site:	Perry
Issue date:	07/31/1985
From:	Youngblood B Office of Nuclear Reactor Regulation
To:	Edelman M CLEVELAND ELECTRIC ILLUMINATING CO.
References
NUDOCS 8508070457
Download: ML20133D782 (6)

Text

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Docket Nos.: 50-440 Jg 31 1985 and 50-441 4 .

, Mr. 'Murray R. Edelman, Vice President Nuclear Operations Group The Cleveland Electric Illuminating Company

P. O. Box 5000 Cleveland, Ohio 44101

Subject:

Resolution of SER Confirmatory Issue (56), Containment Purge, for the Perry Nuclear Power Plant, Units 1 and 2 Your letters dated February 19, 1985 and March 26, 1985, provided the descriptive information required by the staff in Section 6.2.4 of SER Supplement No. 4, with respect to the Perry containment purge programs, identified in that SER supplement as Confirmatory Issue (56). The staff has reviewed the information provided and its evaluation findings are enclosed. We propose to incorporate the enclosed evaluation in the next SER stoplement.

The staff has concluded that the plan addressing the purge programs dis-cussed in your letters would provide an adequate data base to justify the purge criteria to be used for the remainder of the plant life. As such, you may consider SER Confirmatory Issue (56) resolved.

Sincerely,

(

,EIGINAL SIGNED BY 3 B. J. Youngblood, Chief Licensing Branch No. 1 Division of Licensing

Enclosure:

As stated (DISTRTBUTION:

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JUL 31 M65 4

Mr. Murray R. Edelman Perry Nuclear Power Plant The Cleveland Electric *

, Units 1 and 2 Illuminating Company -

cc: -

Jay Silberg, Esq. Mr. Larry O. Beck Shaw, Pittman, & Trowbridge The Cleveland Electric 1800 M Street, N. W. Illuminating Company Washington, D. C. 20006 P. O. Box 97 E-210 Perry, Ohio 44081 Donald H. Hauser, Esq.

The Cleveland Electric Illuminating Company P. O. Box 5000 '

Cleveland, Ohio 44101 Resident Inspector's Office U. S. Nuclear Regulatory Commission -

Parmly at Center Road Perry, Ohio 44081 Regional Administrator, Region III U. S. Nuclear Regulatory Commission 799 Roosevelt Road Glen Ellyn, Illinois 60137 Donald T. Ezzone, Esq.

Assistant Prosecuting Attorney 105 Main Street Lake County Administration Center Painesville, Ohio 44077 Ms. Sue Hiatt OCRE Interim Representative 8275 Munson Mentor, Ohio 44060 Terry J. Lodge, Esq.

618 N. Michigan Street Suite 105 i

Toledo, Ohio 43624 l

l John G. Cardinal, Esq.

Prosecuting Attorney Ashtabula County Courthouse Jefferson, Ohio 44047 i

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ENCLOSURE CONTAINMENT SYSTEMS BRANCH SUPPLEMENT TO THE SAFET) EVALUATION REPORT -

PERRY NUCLEAR PLANT, UNIT 1 DOCKET NO. 50-440 6.2.4 Containment Purge Systems As reported in, Supplement 4 to the SER, the applicant has committed to implement a three point program to assess the need of the containment purge system and to investigate methods to minimize its use consistent w'ith ALARAI -  :.

considerations. In addition, the staff has required that the applicant provide a description of each of these programs identified as: (1) Containment Purge Operation Data-Gathering Program; (2) Containment Access Management Program; and (3) Interim Guidelines for Perry Containment Purge Operation.

By letters dated February 19 and March 26, 1985, the applicant provided the required program description. The following highlights describe each program:

l (1) Containment Purge Operation Data Gathering Program The purpose of this program is to determine the benefits of containment purge and the operating time required to obtain those benefits. The Mark III containment design has a significant amount of vital equipment inside containment. This equipment will require routine inspection, maintenance, and surveillance. Therefore, containment access by plant personnel is necessary during normal I

plant operating conditions. To er..:are that personnel exposure to l

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2 airborne radioactivity is within the maximum permissible concentrctions of 10 CFR 20, containment purging is necessary.

In order to pr3 vide a quantification of the actual environmental conditions that plant personnel will experience, a data collection _

program,will be implemented during the first fuel cycle. The data to be collected is categorized by six basic sets of information: (1) containment access requirements; (2) containment mode of purge i operation; (3) radioactivity concentrations and radiation levels inside containment; (4) containment general air quality; (5) special plant events / parameters; and (6) plant general status information.

The data will be gathered from instrumentation and various documents such as; plant sample logs, containment access logs, radiation work permits, operation's and surveillance logs. Thus, information related to radioactivity source terms and the capabilities of the containment purge system to control containment environment will be obtained.

1 (2) Containment Access Management Program The purpose of this program is,to evaluate and control containment occupancy based on operating experience. This program will consist

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of the following three phases: (1) provide plant procedures to control containment access - by establishing access criteria, l identifying types of activities and enhancements to scheduling; (2) collect containment access data - which includes, when entries are g

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made, the purpose and duration; (3) evaluate data and provide recommendations - if containment access can be reduced, which includes consolidating plant activities.

(3) Interim Guidelines for Perry Containment -

j Purge Operation For the first fuel cycle, the containment purge operational limit is 3000 hours0.0347 days <br />0.833 hours <br />0.00496 weeks <br />0.00114 months <br /> per year, during operating modes 1 through 37 Grab  :.

samples will be taken prior to containment occupancy. Purge will be -

initiated when containment air samples indicate an iodine i

concentration at or above 0.25 MPC (maximum permissible concentration

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per 10 CFR 20). Purging will continue as long as occupied areas benefit from reduced airborne activity (approximately 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br />), or in the event reoccupation or reactor water cleanup is planned soon enough to warrant leaving the purge system in operation. However, during periods when the containment is not occupied, the purge valves will be closed.

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l CEI will submit a report to the NRC based on the first cyc'e operating results.

The report will summarize, from the above stated programs e.g., data gathering, g apparent trends and operating procedures. Otherwise, the containment purge operational limit will be set to a 1000 hours0.0116 days <br />0.278 hours <br />0.00165 weeks <br />3.805e-4 months <br /> per year for the following fuel cycle. This provision has been incorporated in the Perry Technical l Specifications regarding the containment purge system.

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• 4 In conclusion, the staff finds the program plan, as discussed above, would provide an adequate data base to justify the purge criteria to be use.d for the remainder of the plant life. Based on our review, we find the containment purge issue, Confirmatory Issue (56), is resolved.

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