ML17292B533

Part 21 Rept Re XL-S96 CPR Correlation for SVEA-96 Fuel. Defect Applies Only to WNP-2,during Cycles 12,13 & 14 Operation.Evaluations of Defect Performed by ABB-CE

ML17292B533
Person / Time
Site:	Columbia
Issue date:	01/15/1999
From:	Rickard I ABB COMBUSTION ENGINEERING NUCLEAR FUEL (FORMERLY, ASEA BROWN BOVERI, INC.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
REF-PT21-99 LD-99-003, LD-99-3, NUDOCS 9901220118
Download: ML17292B533 (10)

Text

{{#Wiki_filter:CATEGORY 1 Rl REGULA INFORMATION DISTRIBUTIO YSTEM (RIDS),'P A'CCESSIOA &BR:9901220118 DOC.DATE: 99/Ol/15 NOTARIZED: NO DOCKET FACIL:50-397 WPPSS Nuclear Project, Unit 2, Washington Public Powe 05000397 AUTH.NAME~AUTHOR AFFILIATION RICKARD,I.C. ABB Combustion Engineering Nuclear Fuel (formerly Combustio RICKARD, I.C.ABB Atom, Inc.(formerly ASEA Atom, Inc.)RECIP.NAME RECIPIENT AFFILIATION Records Management Branch (Document Control Desk)

SUBJECT:

Part 21 rept re XL-S96 CPR correlation for SVEA-96 fuel.Defect applies only to WNP-2,during Cycles 12,13&14 operation. Evaluations of defect performed by ABB-CE.DISTRIBUTION CODE: IEIST COPIES RECEIVED: LTR I ENCL)SIZE: TITLE: Part 21 Rept (50 DKT)NOTES: RECIPIENT ID CODE/NAME PD4-2 PD INTERNA FIL S 0 NRR DRPM/PECB/B RES/DET/EIB RGN2 RGN4 COPIES LTTR ENCL 1 1 1 1 1 1 1 1 1 1 1 1 RECIPIENT ID CODE/NAME POSLUSNY,C NRR/DRPM/PECB PDR WARD, M.RGNl RGN3 COPIES LTTR ENCL 1 1 1 1 1 1 1 1 1 EXTERNAL: INPO RECORD CTR NRC PDR 1 1 1 1 NOAC SILVER,E NUDOCS FULL TXT 1 1 1-.1 D.u NOTE TO ALL"RIDS" RECIPIENTS: PLEASE HELP US TO REDUCE WASTETH TO HAVE YOUR NAME OR ORGANIZATION REMOVED FROM DZSTRIBUTZON LISTS OR REDUCE THE NUMBER OF COP Z ES RECE I VED BY YOU OR YOUR ORGAN I ZAT ION g CONTACT THE DOCUMENT CONTROL DESK (DCD)ON EXTENSION 415-2083 FULL TEXT CONVERSION REQUIRED TOTAL NUMBER OF COPIES REQUIRED: LTTR 15 ENCL 15 'k I LqW'J~p(mp.a APE p QR q'4~Cj'le 8 c'"'s~ti".y~~.PC.& January 15, 1999 LD-99-003 U.S.Nuclear Regulatory Commission Attn: Document Control Desk Washington, D.C.20555 Subject'.Report of a Oefect Pursuant to 10 CFR 21 Concerning the XL96 CPR Correlation for SVEA-96 Fuel The purpose of this letter is to notify the Nuclear Regulatory Commission of a defect as defined in 10 CFR 21,"Reporting of Defects and Noncompliance." The defect concerns the XL-S96 Critical Power Ratio (CPR)correlation for ABB SYEA-96 fuel assemblies for Boiling Water Reactors (BWRs).Specifically, the defect concerns the XL-SS6 CPR correlation, which is based solely on a cosine axial povrer shape.The defect could lead~to non-conservative Operating Limit MCPRs and monitored CPRs for top-peaked axial power shapes.The Enclosure summarizes the evaluation performed by ABB Combustion Engineering (ABB-CE).If you have any questions, please feel free to contact me or Mr.Yirgil Paggen of my staff at (860)285<700.Very truly yours, COMBUSTION ENGINEERING, INC.lan C.Rickard, Director Nuclear Licensing

Enclosure:

As stated cc: M.A.Bamoski (ABB-CE)ABB Combustion Engineering Nuclear Power Cambveeen Rn{{{eeerin{t. tee.P.O, Bex 500 Tetephono{{{80)663 19t t 2000 Day Htt Rd.Fax{060)285-5203 Windsor, CT Ot0954500'ti'ti0%220118 'ti90i%5 PDR ADOCK 05000397 PDR ABB Combustion Engineering Nuclear Power 10 CFR21 Re ortofa Defector Failure to Corn I The following information is provided pursuant to the requirements s t e forth in 10 CFR 21.21(c)(4): (i)Name and address of theindividualsinfoiming the Commission: lan C.Rickard, Director Nuclear Licensing Combustion Engineering, inc.2000 Day HiH Road Vfindsor, CT 06095-0500 (ii)Identification of the facility, the activity, or the basic component supplied for such facility or such activity within the United Slates which fails to comply or contains a defect: The activity for which this report is being filed is the use of the XL-S96 CPR correlation in determining Safety and Operating Limit MCPRs and in monitoring of CPRs in SVEA-96 Boiling Water Reactor (BNIR)fuef assemblies, This defect applies only to the Washington Public Power Supply System Nuclear Project Unit 2 nuclear power plant during Cycles 12, 13, and 14 operation.(iii)Identification of the firm constructing the facility or supplying the basic component which fails to comply or contains a defect: Combustion Engineering, Inc.'2000 Day HHi Road Windsor, CT 06095-0500 (iv)Nature of the defect or failure to comply and the safety ha ard which is created or could be created by such defect or failure to comply: The defect fdentffied is associated with the use of the XL-S96 CPR correlation in determining Safety and Operating Limit MCPRs and in monitoring of CPRs in SVEA-96 BWR fuel assemblies. For top-peaked axial power shapes, the use of this CPR.correlation could yield non-conservative Operating Limit MCPRs or non-conservative-monitored CPR values.(v)The date on which the information of such defect or failure to comply was obtained: ABB-CE determined that a defect in the CPR correlation existed on January 15, 1999. ~I~N'V Page20f2 WE (vi)In the case of a basic component which contains a defect or fails to comply, the number and location of all such components in use at, supplied for, or being supplied for one or more facilities or activities subject to the regulations ln this part: The defect applies only to BWR reload fuel assemblies currently in operation at WNP-2.(vii)The corrective action which has been, is being, or will be taken;the name of the tnd)vidual or organitation responsible for the action;and the length of time that has been or will be taken to complete the action: Evaluations of the defect have been performed by ABB-CE, lt has been determined the use of the correlation in determining Safety and Operating Limit MCPRs for Cycles 12, 13, and 14 is acceptable. Furthermore, the use of the correlation in monitoring CPR in Cycles 12 and 13 has been adequate.For Cycle 14, the use of the correlation for'onitoring CPR in the core is acceptable prior to 5,600 MWd/MtU.From 5,600 MWd/MtU to the end of Cycle 14 the use of the correlation for monitoring CPR in the core may become non-conservative. The utility currently projects that WNP-2 will reach 5,600 MWd/MTU in February 1999, ABB-GE has provided the Washington Public Power~Supply System with recommended corrective actions to ensure that sufficient margin for monitoring the core CPR is maintained. fviii)Any advice related to the defect or failure to comply about thefacility, activity, or basic component that has been, is being, or will be gi ven to purchasers or licensees: The Nfashingtan Public Power Supply System has been notified of the defect and has been provided with necessary information and recommendations, TOTAL P.84

0 January 15, 1999 LD-99-003 U.S.Nuclear Regulatory Commission Attn: Document Control Desk Washington, D.C.20555

Subject:

Report of a Defect Pursuant to 10 CFR 21 Concerning the XL-S96 CPR Correlation for SVEA-96 Fuel The purpose of this letter is to notify the Nuclear Regulatory Commission of a defect as defined in 10 CFR 21,"Reporting of Defects and Noncompliance." The defect concerns the XL-S96 Critical Power Ratio (CPR)correlation for ABB SVEA-96 fuel assemblies for Boiling Water Reactors (BWRs).Specifically, the defect concerns the XL-S96 CPR correlation, which is based solely on a cosine axial power shape.The defect could lead to non-conservative Operating Limit MCPRs and monitored CPRs for top-peaked axial powershapes. The Enclosure summarizes the evaluation performed by ABB Combustion Engineering (ABB-CE).If you have any questions, please feel free to contact me or Mr.Virgil Paggen of my staff at (860)285-4700.Very truly yours, COMBUSTION ENGINEERING, INC.lan C.Rickard, Director Nuclear Licensing

Enclosure:

As stated cc: M.A.Barnoski (ABB-CE)gQQQO PiJ ABB Combustion Engineering Nuclear Power Combustion Engineering, Inc.P.O.Box 500 2000 Day Hill Rd.Windsor, CT 06095-0500 Telephone (860)688-1911 Fax (860)285.5203 0 t Enclosure to LD-99-003 Page 1 of 2 ABB Combustion Engineering Nuclear Power 10 CFR 21 Re ort of a Defect or Failure to Com I The following information is provided pursuant to the requirements set forth in 10 CFR 21.21(c)(4): (i)Name and address of tike indi viduals informing tike Commission: lan C.Rickard, Director Nuclear Licensing Combustion Engineering, Inc.2000 Day Hill Road Windsor, CT 06095-0500 (ii)Identification of tike facility, the activity, or the basic component supplied for such facility or such activity witlkin tike United States wlkiclk fails to comply or contains a defect: The activity for which this report is being filed is the use of the XL-S96 CPR correlation in determining Safety and Operating Limit MCPRs and in monitoring of CPRs in SVEA-96 Boiling Water Reactor (BWR)fuel assemblies. This defect applies only to the Washington Public Power Supply System Nuclear Project Unit 2 nuclear power plant during Cycles 12, 13, and 14 operation.(iii)Identification of tike firm constructing the facility or supplying the basic component which fails to comply or contains a defect: Combustion Engineering, Inc.2000 Day Hill Road Windsor, CT 06095-0500 (iv)Nature of the defect or failure to comply and the safety/kazard whicli is created or could be created by suclk defect or failure to comply: The defect identified is associated with the use of the XL-S96 CPR correlation in determining Safety and Operating Limit MCPRs and in monitoring of CPRs in SVEA-96 BWR fuel assemblies. For top-peaked axial power shapes, the use of this CPR correlation could yield non-conservative Operating Limit MCPRs or non-conservative monitored CPR values.(v)The date on which theinformation of such defect or failure to comply was obtained: ABB-CE determined that a defect in the CPR correlation existed on January 15, 1999. Enclosure to LD-99-003 Page2of2 (vi)In the case of a basic component whic/t contains a defect or fails to comply, the number and location of all such components in use at, supplied for, or being supplied for one or more facilities or acti vities subject to the regulations in this part: The defect applies only to BWR reload fuel assemblies currently in operation at WNP-2.(vii)T/te corrective action which has been, is being, or will be taken;the name of theindividual or organization responsible for the action;and the length of time that has been or will be taken to complete the action: Evaluations of the defect have been performed by ABB-CE.It has been determined the use of the correlation in determining Safety and Operating Limit MCPRs for Cycles 12, 13, and 14 is acceptable. Furthermore, the use of the correlation in monitoring CPR in Cycles 12 and 13 has been adequate.For Cycle 14, the use of the correlation for monitoring CPR in the core is acceptable prior to 5,600 MWd/MtU.From 5,600 MWd/MtU to the end of Cycle 14 the use of the correlation for monitoring CPR in the core may become non-conservative. The utility currently projects that WNP-2 will reach 5,600 MWd/MTU in February 1999.ABB-CE has provided the Washington Public Power Supply System with recommended corrective actions to ensure that sufficient margin for monitoring the core CPR is maintained.(viii)Any advice related to the defect or failure to comply about the facility, activity, or basic"component that has been, is being, or will be given to purcltasers or licensees: The Washington Public Power Supply System has been notified of the defect and has been provided with necessary information and recommendations.}}