power plant achieves reliable boiler drum level control ... · in this region which creates...

POWER ROSEMOUNT 5300

RESULTS

•Reducedmaintenancewithnocalibrationrequired

•Increasedaccuracywithmorerapiddrumlevelreadings

•Eliminationofunwarrantedtripsduetocoldambientconditions

“Since converting to the Rosemount 5300 with Dynamic Vapor Compensation, unit reliability has significantly increased.”ManagerofGasandTurbineEngineering

APPLICATIONBoilerdrumlevelcontrolatacombinedcyclepowerplant.

CUSTOMERNAnaturalgascombinedcyclegasplantlocatedinUSAwithacapacityofover900MW

CHALLENGEDuringthewintermonths,sub-freezingtemperaturesarecommoninthisregionwhichcreateschallengesforthecompany’sdrumlevelmeasurementinstrumentation.

Theprimarylevelmeasurementontheboilerdrumsweredifferentialpressuretransmitterswithimpulsetubing(wetlegs).Duringwintermonthsfrozenwetlegscausederrorsintheindicateddrumlevelsresultinginunittrips.Toalleviatetheproblem,theimpulsetubeswereinsulatedandheattracedbuttheimpulsetubescontinuedtofreeze.

SOLUTIONAsaresult,thegassitesystemsengineerdecidedtoinvestigatealternativetechnologiestoimprovethereliabilityoftheboilerdrumlevelinstrumentation.WithsupportfromEmersonTMexperts,theyinstalledRosemount5300GuidedWaveRadarwithDynamicVaporCompensation(DVC)alongwithaRosemount9901bypasschamber.

Withprocessdesignconditionsexceeding2300psiand650°F,theRosemount5300withDVCprovidedfullycompensatedlevelmeasurements,independentofpressureandtemperature,resultinginaccurateandreliablelevelreadingsduringallstart-upandshut-downconditions,regardlessoftheweather.

Illustration showing how Dynamic Vapor Compensation works

Power Plant Achieves Reliable Boiler Drum Level Control with RosemountTM Guided Wave Radar

“With the proven reliability of the Rosemount 5300 with DVC, we are working to implement them as a best practice for the combined cycle fleet”ManagerofGasandTurbineEngineering

INDUSTRY

Theplantusedatwooutofthreevotingsystemwiththreeredundantradarinstallations.Sinceinstallation,theRosemount5300withDynamicVaporCompensationhasprovedtobeveryreliable.Theradarlevelscannotdeviatefromeachotherbymorethan2.5"(6.35cm)withoutcausingtheboilertotrip.Sinceinstallation,theyhavealltrackedreliablyandwithinthemanufacturer’sspecification.

Emersontechniciansperformedon-sitestartupoftheradarsandprovidedformaltrainingforthesiteoperatorstoensureconfidenceinthenewproduct.

RESOURCESRosemount 5300 Guided Wave RadarEmersonProcess.com/Rosemount/Guided-Wave-Radar/5300

Emerson Process Management Power IndustryEmersonProcess.com/Industries/Power

StandardTermsandConditionsofSalecanbefoundatwww.Emerson.com/en-us/pages/Terms-of-Use.aspxTheEmersonlogoisatrademarkandservicemarkofEmersonElectricCo.RosemountandtheRosemountlogotypearetrademarksofEmersonProcessManagement.Allothermarksarethepropertyoftheirrespectiveowners.©2016EmersonProcessManagement.Allrightsreserved.

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