ML20032E758

Forwards Request for Addl Info Re Accident Evaluation. Response Should Be Submitted by 811204

ML20032E758
Person / Time
Site:	Perry
Issue date:	10/23/1981
From:	Houston M Office of Nuclear Reactor Regulation
To:	Davidson D CLEVELAND ELECTRIC ILLUMINATING CO.
References
NUDOCS 8111230003
Download: ML20032E758 (4)

Text

OCT 2 a 1981 DISTRIBUTION:

Docket File LB#2 File DEisenhut RPurplc Docket Hos. 50-440 RTedesco and 50-441 ASchwencer

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Mr. Dalwyn R. Davidson

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Post Office Box 5000 Cleveland, Ohio 44101 N

Subject:

Request for Additional Inforre. tion - Accident Evaluation In the performance of tne Perry licensing review, the staff has identified concerns in regard to accident evaluation. The information that we require is identified in the enclosure.

We request that you provide the infomation not later than December 4,1981, If you require any clarification of this request, please contact me at (301)492-8430.

Sincerely, Drigim1 dgwd by M. Dean Houston, Project l'anager Licensing Branch No. 2 Division of Licensing

Enclosure:

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Mr. Dalwyn R. Davidson Vice President, Engineering The Cleveland Electric illuminating Company P. O. Box 5000 Cleveland, Ohio 44101 cc: Gerald Charnoff, Esq.

Shaw, Pittman, Potts & Trowbridge 1800 M Street, N. W.

Washington, D. C. 20006 Donald H. Hauser, Esq.

The Cleveland Electric 111uminating Company P. O. Box 5000 Cleveland, Ohio 44101 Resident inspector's Office U.S.N.R.C.

Parmly at Center Road Perry, Ohio 4a081 Donald T. Ezzone, Esq.

Assistant Prosecuting Attorney 105 Main Street Lake County Acninistration Center Painesville, Ohio 44077 Tod J. Kenney 228 South College, Apt. A Bowling Green, Ohio 43402 Daniel D. Wilt Wegman, Hesiler & Vanderberg 7301 Chippewa Road, Suite 102 Brecksville, Ohio 44141 Robert Alexander CCRE Interim Representative 2030 Portsmouth Street

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l Suite 2 Houston Texas 77098 l

i Terry Lodge, Esq.

915 Spitzer Building Toledo, Ohio 436C4 i

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%J Request For Additional Information Perry - Docket Nos. 50-440/441 451.01 a) Identify the extremes of temperature (maximum and minimum) considered in'the design of safety-related structures, systems, and components.

6 b) Provide the bases for the selected values, c) Compare the selected values with extreme maximum and minimum temperatures observed in the region.through 1980 (Note: Table 2.3-4 presents extreme temperatures observed through 6/78) and with the values for a 100-year return period (1080F maximum and -320F minimum) presented in NUREG/CR -1390, " Probability estimates of. temperature extremes for the Contiguous United States" (May 1980).

451.02 The tornado statistics presented in Section 2.3.1.2.2 are based on a regional data base which ended in 1977.

Identify any tornadoes that have occurred in the vicinity of the site since 1977, and provide estimates of the intensity (maximum wind speed) and path area of each.

Based on this additional information, provide a revised estimate of tornado strike probability at the plant site.

451.03 Provide the " Attractive Area" of plant structures used in tha determin-ation that the " containment buildings will average approximately one (lightning) strike every five years "(FSAR'p.2.3-ll).

Annual average precipitation a' the Perry Site for the three years t

451.04 (5/1/72 - 4/30/74 and 9/1/77 -.8/31/78) is considerahly less (about 30%) than annual average precipitation for the same three-year period.

reported at nearby stations such as Erie, Pa., Cleveland, OH., Painesville OH,. and Geneva, OH., (see Table 2.3-16).

a) Provide a discussico of this apparent anomaly in amount of precipitation observed at the Perry Site and indicate if other parameters (particularly wind direction) measured during the 3-year period could also be anomalous.

b) Provide comparisons of meteorological data (e.g., precipitation, I

wind speed, and wind direction) collected at the Perry Site for the period 9/1/78 8/31/81 with similar data from nearby stations for the same period.

451.05 Provide a description of the digital recording system for meteorological data which was installed in March 1978,-and provide an assessment of the accuracy of this system for time-averaged values of meteorological parameters.

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s 451.06 Provide a complete description of the meteorological measurements program (including control room display) to be available during plant operation, considering tt. criteria for. emergency planning described

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in NUREG-0654 and Regulatory Guide 1.97. Also indicate how site-specific meteorological characteristics such as the lake breeze circulation described in Section 2.3.2.3.2 will be considered in emergency planning, i

450.07 Do all instrument lines containing reactor coolant and all other lines (15.6.2) exempted from General Design Criterion 55 pass through and. terminate only in. plant volumes served by engineered safety feature ventilation system.s?

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