FPL_Pre_Workshop_Responses-Wilma
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FPL_Pre_Workshop_Responses-Wilma
Technical Report:Post Hurricane Wilma Engineering AnalysisFINAL REPORTPrepared by: KEMA Inc.Prepared for: Florida Power & Light CompanyKEMA Project 05 FPL_Pre_Workshop_Responses-Wilma5-349January 12r 2006Eorida Power & LÍỊỊỈT. CompanyPost Humcane Wilma Engineering AnalysisJanuary 12“ 2006FREEDOM OF INFORMATION ACT (FOIA) NOTICE: This document contains trade secrets and/or proprietary, commercial, or financial information not generally available to the public. It is considered pr FPL_Pre_Workshop_Responses-Wilmaivileged and proprietary to the Offeror, and is submitted by KEMA, Inc. in confidence with the understanding that its contents are specifically exemptFPL_Pre_Workshop_Responses-Wilma
ed from disclosure under the Freedom of Information Act [5 use Section 552 (b) (4)) and shall not be disclosed by the recipient [whether it be GovernmTechnical Report:Post Hurricane Wilma Engineering AnalysisFINAL REPORTPrepared by: KEMA Inc.Prepared for: Florida Power & Light CompanyKEMA Project 05 FPL_Pre_Workshop_Responses-Wilma part, for any purpose except to the extent in which portions of the information contained in this document are required to permit evaluation of this document, without the expressed written consent of the Offeror. If a contract is awarded to this Offeror as a result of, or in connection with, the su FPL_Pre_Workshop_Responses-Wilmabmission of this data, the right to duplicate, use, or disclose the data is granted to the extent provided in the contract.r.orida Power & Light Cccr-FPL_Pre_Workshop_Responses-Wilma
par.vPơỉt Humcane Wilma Engineering AnalysistiJanuary 12*2005FPLKEMA^-Executive SummaryHurricane Wilma caused extensive damage to die infrastructure oTechnical Report:Post Hurricane Wilma Engineering AnalysisFINAL REPORTPrepared by: KEMA Inc.Prepared for: Florida Power & Light CompanyKEMA Project 05 FPL_Pre_Workshop_Responses-Wilma In all, Wilma resulted in more than three million customer accounts losing electrical service, rpi. has retained KFMA to examine die performance OÍ FPL facilities during Wilma in an attempt to belter understand whether transmission and disưibuũon structures performed appropriately.KFXIA’s investiga FPL_Pre_Workshop_Responses-Wilmation concludes that the transmission, substation, and distribution systems of TPI. is designed to meet or exceed all required safety standards, and, dFPL_Pre_Workshop_Responses-Wilma
uring Wilma, performed as expected and in accordance with TPI standards. These results are based on an extensive assessment including standards, qualiTechnical Report:Post Hurricane Wilma Engineering AnalysisFINAL REPORTPrepared by: KEMA Inc.Prepared for: Florida Power & Light CompanyKEMA Project 05 FPL_Pre_Workshop_Responses-Wilmad by an industry benchmark survey covering these topics, and a review on the strength of Wilma by an independent hurricane expert. Summary results tor these issues are now provided.Distribution Standards. FPL distribution standards as described in rhe Distribution Fngineering Reference Manual (DERM) FPL_Pre_Workshop_Responses-Wilma meet or exceed the requirements of National Electrical Safety Code (NESC), which requires distribution poles to be designed based on a minimum of 60FPL_Pre_Workshop_Responses-Wilma
mph wind speeds, in fact, FPL requites that most poles be designed to rhe highest NESC requirement, which is 50% srionger than NESC minimum requiremenTechnical Report:Post Hurricane Wilma Engineering AnalysisFINAL REPORTPrepared by: KEMA Inc.Prepared for: Florida Power & Light CompanyKEMA Project 05 FPL_Pre_Workshop_Responses-Wilmaly apply to distribution structures.Quality Processes. The quality systems and processes of FPL and key suppliers are sufficient to reasonably ensure that procured distribution poles, both wood and concrete, meet national standards and FPL specifications. Further, the quality systems of the FPL pole FPL_Pre_Workshop_Responses-Wilma inspection and treatment vendor are such that it is reasonably ensured (hat inspected wood poles requiring treatment or replacement are identified asFPL_Pre_Workshop_Responses-Wilma
such.Pole Maintenance. FPL distribution pole performance during non-hurricane conditions is good, and nonhurricane pole failures cause virtually no cTechnical Report:Post Hurricane Wilma Engineering AnalysisFINAL REPORTPrepared by: KEMA Inc.Prepared for: Florida Power & Light CompanyKEMA Project 05 FPL_Pre_Workshop_Responses-Wilmaeeder poles at least every five years, and (2) a more targeted wood-pole inspection and treatment program that Is smaller In scope and focuses on specific areas of the FPL system. FPL crews are also required to perform a safety inspection on a pole before performing work on the pole. These inspectio FPL_Pre_Workshop_Responses-Wilmans will not systematically address each pole, but KEMA estimates that this will effectively test between 80% and 90% of all branch-line laterals overFPL_Pre_Workshop_Responses-Wilma
a fifteen year period.Transmission Performance. The transmission lines of FPL are designed in accordance with the NESC. including extreme wind requireTechnical Report:Post Hurricane Wilma Engineering AnalysisFINAL REPORTPrepared by: KEMA Inc.Prepared for: Florida Power & Light CompanyKEMA Project 05 FPL_Pre_Workshop_Responses-Wilmagle-pole unguyed wood structures. These facilities met the required design codes at the time of installation, but differ from current designs in place now at FPL. This was the primary contributing factor for these failures. Only one 500-kV transmission line experienced structural damage during Wilma FPL_Pre_Workshop_Responses-Wilma. Ulis particular line had 30 lower failures. Hie major contributing factor for these lower failures was the installation guidelines tor manual tighteFPL_Pre_Workshop_Responses-Wilma
ning of crossbrace holts per industry standard practice, which is insufficient and led to the loosening of crossbrace bolts in several locations.SubstTechnical Report:Post Hurricane Wilma Engineering AnalysisFINAL REPORTPrepared by: KEMA Inc.Prepared for: Florida Power & Light CompanyKEMA Project 05 FPL_Pre_Workshop_Responses-Wilmauctural damage to substations was minor. Although FPL experienced outages on 241 substations during Wilma, most were due to the outage of transmission lines serving these stations; only 8 required equipment repair hetore heing reenergized. With some minor exceptions, there was no discernible partem FPL_Pre_Workshop_Responses-Wilmaof equipment failure that indicates a design or maintenance concern.Weather Assessment. Wilma was a strong storm, and its path affected a large percenFPL_Pre_Workshop_Responses-Wilma
tage of die FPL system. As opposed to many statements by the media, Wilma was a Category J hurricane when it made landfall al the Southwest coast of FTechnical Report:Post Hurricane Wilma Engineering AnalysisFINAL REPORTPrepared by: KEMA Inc.Prepared for: Florida Power & Light CompanyKEMA Project 05 FPL_Pre_Workshop_Responses-Wilma. The maximum 1-minute sustained wind speed (as reported byUnisys) as Wilma crossed Florida was 127 mph, which comes close to a Category 4 hurricane. In comparison, Katrina had a maximum sustained wind speed of Bl mph while crossing Florida (also reported by Unisys).Florida Power & Light Comjjar.vPo FPL_Pre_Workshop_Responses-Wilmast Humcane Wilma Engineering Analysts3January 12“ 2006FPLKEMA^_____Table A. Distribution Pole Failures During Past Hurricanes.Technical Report:Post Hurricane Wilma Engineering AnalysisFINAL REPORTPrepared by: KEMA Inc.Prepared for: Florida Power & Light CompanyKEMA Project 05Technical Report:Post Hurricane Wilma Engineering AnalysisFINAL REPORTPrepared by: KEMA Inc.Prepared for: Florida Power & Light CompanyKEMA Project 05Gọi ngay
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