ML20056A029

Forwards Response to NRC 900206 Request for Addl Info Re Util 870817 License Amend Request,Extending Expiration Dates for OLs

ML20056A029
Person / Time
Site:	Brunswick
Issue date:	07/30/1990
From:	Cutter A CAROLINA POWER & LIGHT CO.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
NLS-90-149, NUDOCS 9008030099
Download: ML20056A029 (3)

Text

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y f, SERIAL: NLS-90 149 Nuclear Serv 6ces Department TSC 87TSB17 United States Nuclear Regulatory Comnission ATTENTION: Document Control Desk Washington, DC 20$55

            . BRUNSWICK STEAM ELECTRIC PLANT, UNIT NOS, 1 AND 2 DOCKET NOS. 50-325 6 50 324/ LICENSE NOS. DPR 71 & DPR 62 RESPONSE TO NRC REQUEST FOR ADDITIONAL INFORMATION EXTENSION OF OPERATING LICENSE (NRC TAC NOS. 66082 AND 66083)

Gentlemen: By letter dated February 6,1990, the Nuclear Regulatory Commission transmitted a request,for additional information concerning Carolina Power & Light-Company's (CP&L) licenne amendm nt request dated August 17, 1987 to extend the

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expiration dates of the Brur Steam Electric Plant, Units 1 and 2 operating licenses.- On May 29, 1990 4 29, 1990, CP&L submitted responses to twelve of the Staff's thirteen quc Enclosed is the response to remaining NRC' Staff question. Please refer any questions reptding this submittal to Mr. W. R. Murray at (919) 546-4661. Yours very tru , 4 A. B Cutter A. B Cutter, having been first duly sworn, did depose and say that the

               -information contained herein is true and correct to the best of his information, knowledge and belief; and the sources of his information are officers, employees, contractors, and agents of Carolina Power & Light Company.

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     . s-ENCLOSURE 1 BRUNSWICK STEAM ELECTRIC PLANT, UNITS 1-AND 2 NRC DOCKETS 50 325 & 50 324 OPERATINC LICENSES DPR 71 & DPR-62
                          - RESPONSE TO NRC REQUEST FOR ADDITIONAL INFORMATION OPERATINC LICENSE EXTENSION (NRC TAC NOS. 66082 AND 66083)

NRC REOUEST NO. 13: Provide a listing of all FES or FSAR sections in which less than 40 years of operation was assumed; provide an assessment of the impact of the extensions on conclusions'found in the sections identified, CP&L RESPONSE:- Listed below:are the Updated FSAR sections which reference time of operation of less than 40 years: (a) Updated FSAR Section 2.1,3 This section addresses population projections through the ' year 2010. Updated population projections based on 40 years of plant operation are provided as responses to NRC Requests Nos, 1 and 2. (b) Updated FSAR Section 3.5.1, pages 3.5.1-13 and 3.5.1 15 This section discusses turb'ine failure probabilities provided by Cencral Electric (GE), General Electric was contacted and provided assistance in assessing the proposed extension to the operating license expiration date. General Electric advises that the turbine failure probabilities cited in the Updated FSAR are for a hypothetical turbine rotor which has sh'unk r on wheels (discs) having certain assumed undetected defects and

                 ' material properties based on statistica11y' estimated distributions. The probability values provided in Updated FSAR Table 3.5.1-3 are linear-with time; therefore, the probabilities shown in Updated FSAR Tables 3.5.1-3 and 3.5.1 5 should be multiplied by 1.33 to reflect the change from a thirty year.to a forty year time period. Although the turbine failure probabilities are slightly increased, the conclusion of the Updated FSAR remains unchanged that the probabilities are sufficiently small to be considered as an acceptable risk. The consequences of such an event would remain unchanged regardless of
}                 whether a thirty year or forty year time period was assumed.

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Listed below'are.the Final Environmental Statement (FES) sections which reference time of operation of less than 40 years: (a) LPES Section_IX,'page IX 1 This section of the FES' addresses irreversible and irretrievable commitment of resources due to the operation of the Brunswick Plant. The~ FES identified two major resources that would be irreversibly andL irretrievably committed due to operation of the Brunswick Plant: the land'(during_the life of the plant) and the uranium consumed by_the reactor. The FES conclusions concerning the irreversible and irretrievable commitment of resources remain unchanged as a result of the proposed operating license extension. (b) FES Section XI.B. page XI 16

                     'This section of the FES discusses the cost-benefit analyses for the plant with respect to alternatives. .The analysis assumes a 30 year
                      - effective plant life relative to monetized' costs and/or benefits. The extsnsion of the operating licenses produces significant additional benefit for_the customers of Carolina Power & Light Company and the Eastern Municipal Power Agency, while deferring the cost of replacement

_ power. Therefore,'the FES conclusion that the environmental impact of g plant operation will be greatly _ outweighed by the availability of j electrical power produced by-the plant remains valid for the period of i the requested operating license extensions.

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