ML20126D189

Forwards Request for Addl Info Re Amend 18 to FSAR Concerning RCPB Leak Detection.Response Requested within 7 Days

ML20126D189
Person / Time
Site:	Perry
Issue date:	06/10/1985
From:	Youngblood B Office of Nuclear Reactor Regulation
To:	Edelman M CLEVELAND ELECTRIC ILLUMINATING CO.
References
NUDOCS 8506140670
Download: ML20126D189 (3)

Text

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' Docket Nos.: 50-440 JUN 101985 and 50-441 Mr. Murray R. Edelman, Vice President Nuclear Operations Group The Cleveland Electric Illuminating Company P. O. Box 5000

' Cleveland, Ohio 44101

Subject:

Request for Additional Information Relative to Changes Documented in Amendment 18 of the FSAR Pertaining to Reactor Coolant Pressure Boundary Leak Detection - Perry Nuclear Power Plant (Units 1 and 2)

-In its review of changes documented in FSAR Amendment 18, the staff has identified the need for additional information relative to changes to Section 5.2.5 of the FSAR as reflected in Amendment 18. Your response to the enclosed list of clarifications is required in order for the staff to determine the acceptability of the amended reactor coolant pressure boundary leakage detection methods de-scribed in Amendment 18.

Please advise the Perry Project Manager when we may expect to receive your response within 7 days after receipt of this letter.

Sincerely, B. J. Youngblood, Chief Licensing Branch No. 1 Division of Licensing

Enclosure:

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AUXILlaRLSYSTEMS BRANCH REQUEST FOR ADDITIONAL INFORMATION PERRY NUCLEAR POWER PLANTS, UNITS 1 AND 2 DOCKET NOS. 50-440 AND 50-441 l Reactor Coolant Pressure Boundary (RCPB) Leak Detection

1. FSAR Section 5.2.5, as revised per amendments issued, including Amendment ,

18, states the following:

e "The primary detection methods for small unidentified leaks within the drywell include monitoring of floor drain sump flow rate, cooler condensate flow rate increases, and airborne gaseous and particulate radioactivity increases. (The sensitivity of these primary detection methods for unidentified leakage within the drywell is 1 gpm within one hour.)" -

FSAR 5.2.5.1.1 e "The secondary detection methods, i.e., the monitoring of pressure and -

temperature of the drywell atmosphere, are used to detect gross unidentified leakage." - FSAR 5.2.5.1.1 Whereas, FSAR Amendment 18, Q&R 5.2-31 (DSER ASB-4) states the following:

e As primary method for detecting, identified and unidentified . leakage, the drywell floor drain sump level, and the drywell equipment drain sump level will be used to monitor flow rate (gpm) into the sump.

e Airborne particulate and gaseous radioactivity will be monitored in the drywell as a supplemental / qualitative method for determining high gross unidentified leakage, o

Condensate flow rate from the upper two drywell coolers will be monitored Readout units are in gpm.

as a supplemental method of leak detection.

e Please clarify the apparent conflict in your submittals and state whether the airborne gaseous and particulate radioactivity monitors are primary or supplemental methods for leak detection.

2. If it is your intention that the airborne particulate and gaseous radio-

'ad from primary to supplemental /

active monitoring methods will be down- b gross unidentified leakage qualitative methods for detemining ( the primary unidentified inside drywell, then it is our positit.

leak detection method inside the drywel, .,nould be seismic Category I, Class 1E with the ability to detect 1 gpm within one hour.

3. Provide drawing references for the leakage detection systems for both the identified and unidentified collection systeme. in FSAR Section 5.2.5.

The drawings identified as references should indicate placement of instru-mentation.

l 1

f s- ib JlW IO 1985 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 Comission 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 Toledo, Ohio 43624 John G. Cardinal, Esq.

Prosecuting Attorney Ashtabula County Courthouse Jefferson, Ohio 44047