kks reference

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Siemens Power Generation

Equipment Unit and Component Code

Reference List (Edition 1990)

Identification System for Power Plants

VGB Technical Commitee on Identification System forTechnical Classification Systems Power Stations

List of Terms

1st Edition 1990 Page 1 of 29

KKS

List of Termsall terms sorted alphabetically

Description Equipmentunit key

Componentkey

Absolute dose measuring circuits CXAbsolute pressure measuring circuits CPAbsorbed doserate measuring circuits CXAbsorber assemblies JAAbsorber assemblies, burnable JEAbsorber vessels AT KTAbsorbers AT KTAbsorbers (for cooling) AC KCAbsorbers (for separating materials) ATAbsorption refrigerators AHAbsorptive filters AT KTAbsorptive silencers BSAcceleration measuring circuits CSAccumulators BB KDAcoustic enclosures (dedicated removable unit) BUAcoustic signaling devices - HAcoustic transducers - BActive filters (electrical) - ZActivity measuring circuits CRActuating equipment (non electrical) ASActuating equipment for electrical variables GXActuators (electrical, oscillatory) - YActuators (electrical, rotary) - MActuators (non- electrical, rotary) MMActuators (non electrical, oscillatory) MSAdjustable foundations BF MFAdjustable orifices KAAdjustable resistors (electrical) - RAdjusting equipment, not for electrical variables ASAdjusting valves AA KAAdmittance, conductance, susceptance measuring circuits CEAerials - WAgitators KMAir- conditioning units AHAir blowers (for compressing purposes) AN KNAir blowers (for conveying purposes) AF KFAir classifiers (physical separator) AT KTAir ejectors BNAir engines MMAir filters KTAir heaters AC KCAir inlet valves AA KAAir lift tanks BB KDAir pressure (atmospheric) measuring circuits CPAir pumps AN KNAir soot blowers (for cleaning purposes) AT KTAir turbines MTAir- vane relays - FAirlocks ABAlarm annunciation equipment - HAlarm devices (non- electrical) QHAmplifier valves - VAmplifiers (electrical) - N

VGB Technical Committee on Identification System forTechnical Classification Systems Power Stations

List of Terms

Page 2 of 29 1st Edition 1990

KKS


Componentkey

Amplifiers, with valves or transistors (as assemblies) - AAnalog comparators - NAnalog computers - NAnalog controllers - NAnalog input/output devices - NAnalog signal conditioning equipment for computers (EM- EQ available) EMAnalog signal conditioning equipment for computers (EM- EQ available) ENAnalog signal conditioning equipment for computers (EM- EQ available) EPAnalog signal conditioning equipment for computers (EM- EQ available) EQAnalog signal conditioning equipment for controls (EA- EE available) EAAnalog signal conditioning equipment for controls (EA- EE available) EBAnalog signal conditioning equipment for controls (EA- EE available) ECAnalog signal conditioning equipment for controls (EA- EE available) EDAnalog signal conditioning equipment for controls (EA- EE available) EEAnalog signal conditioning equipment for protection (EW- EZ available) EWAnalog signal conditioning equipment for protection (EW- EZ available) EXAnalog signal conditioning equipment for protection (EW- EZ available) EYAnalog signal conditioning equipment for protection (EW- EZ available) EZAnalog signal conditioning equipment for reactor protection ERAnalog signal conditioning equipment for signaling (EG- EK available) EGAnalog signal conditioning equipment for signaling (EG- EK available) EHAnalog signal conditioning equipment for signaling (EG- EK available) EJAnalog signal conditioning equipment for signaling (EG- EK available) EKAnalog signal conditioning equipment, combined EUAnalog timers (integr., diff., delay) - NAnalog- to- digital converters (frequency, voltage, current) - UAnalog, binary & digital indication & recording measuring instruments - PAnalytical control circuits, except DD, DM, DV DQAnalytical measuring circuits, except CD, CM, CV CQAnalytical measuring circuits, indirect, except FD, FM, FV FQAnalytical measuring instruments (non- electrical) QPAnalytical sensors (electrical) - BAnalytical transducers - BAngle measuring circuits CGAngle transducers - BAngular velocity measuring circuits CSAntennae - WApron conveyor belts AFApron conveyors KFArcing chambers - FArea measuring circuits CGArticulated shafts MUAssemblies of equipment (electrical) - AAsynchronous motors - MAttachments - see supportsAutomatic cut outs - FAutomatic drains traps AA KAAuxiliary contractors - KAuxiliary relays - KAxial- flow blowers AN KNAxial- flow compressors AN KNAxial- flow fans AN KNBackup burners AV KVBaffle separators KTBaffles (flow guides) MRBalanced- beam relays - K


List of Terms


KKSDescription Equipment

unit keyComponentkey

Balancing equipment (electrical) - ZBalancing machines AW KWBalers (packaging) KKBall mills AJ KJBall valves AA KABand brakes MBBand clutches MKBand filters AT KTBar screens AT KTBarometers QPBarriers AB KBBase supports BQBasins KDBatteries - GBatteries GRBattery condition sensors - BBattery racks GZBearing assemblies (for main and heavy machinery) HDBeater mills AJ KJBeater wheel mills AJ KJBellows expansion joints (for piping) MRBells - HBelt cleaning equipment AT KTBelt conveyors AF KFBelt drives MUBending machines AW KWBending moment measuring circuits CWBifurcated terminals - ZBifurcated transformers - ZBimetallic trips - FBinary elements - DBinary status indicators - PBistables - BBlank flanges KABlanks KABlinds AB KBBlock and tackle (permanently installed) AE KEBlockers - DBlower units ANBlowers ANBoiler circulation pumps AP KPBoiler drums BBBoiling point measuring circuits CQBolted couplings MKBrake motors - MBrake operators (magnetic) - YBrake resistors - RBrake units AUBrakes MBBraking equipment AUBreakers AJ KJBreeder assemblies JCBridge cranes AEBridge rectifiers - VBroaching machines (machine tools) AW KWBrush cleaning equipment AT


List of Terms


KKS


Componentkey

Buchholz relay measuring circuits (pretrip alarm, trip) CEBuchholz relays - FBucket conveyors AF KFBucket elevators AF KFBuckets KFBuffer amplifiers - NBuilt- in equipment - SBuilt- in heaters (electrical) - EBuilt- in heaters (non- electrical) KCBulkhead walls KBBulkheads ABBurglar alarm boxes - HBurners KVBusbars (electrical) - WBuses - WButterfly valves AA KABuzzers - HCabinet- mounted switchgear (electrical) - QCabinet power supply equipment GWCable penetrations (GA- GG for us as required) GACable penetrations (GA- GG for us as required) GBCable penetrations (GA- GG for us as required) GCCable penetrations (GA- GG for us as required) GDCable penetrations (GA- GG for us as required) GECable penetrations (GA- GG for us as required) GFCable penetrations (GA- GG for us as required) GGCable plugs - XCable racks GZCable simulation networks - ZCable terminations - ZCables - WCalcinating kilns AWCalculation equipment (root- extraction, multiplication, division) - NCalorific value measuring circuits (HHV) CQCalorific value measuring circuits (LHV) CQCapacitance measuring circuits CECapacitors - CCartridge filters KTCartridge- type heaters - ECascade coolers AC KCCasting machines AW KWCatalytic converters KTCathode ray tubes - VCentrifugal clutches MKCentrifugal compressors (axial and radial flow) AN KNCentrifugal fans (axial and radial flow) AN KNCentrifugal pumps (axial, mixed- flow and radial flow) AP KPCentrifugal switches (electrical) - FCentrifuges AT KTChain conveyors AF KFChain drives MUChanging equipment AEChannel sections MRChannels BRChargers GUChillers AH


List of Terms




Chimes - HChokes - LChutes MRChutes (as gullies) BRChutes (for conveying) KFCircular conveyors AF KFCirculation pumps AP KPClarifiers ATClassifiers AT KTClaw clutches MKCleaning equipment ATCleaning machines KTClock generators - DClock pulse generators - GClocks (electrical) - PClocks (non- electrical) QPClosures ABClutch units AUClutches MKCoal mills AJ KJCoaxial cables - WCoaxial plugs - XCocks KACode converters - UCode- operated switches - SCoding equipment - UCoil spring couplings MKCoils - LCold air refrigerators - see refrigeratorsCold junction compensators (electrical) - PCombined variables control circuits DUCombined variables measuring circuits, direct CUCombined variables measuring circuits, indirect FUCombustion equipment AV KVCommand output devices - DCompacting equipment, only if part of process AKCompacting machines (packaging) KKComparators (electrical) - DCompressed air engines MMCompressed air valves AA KACompression refrigerators AHCompressor units ANCompressor units ANCompressors AN KNComputers - NConcentration measuring circuits CQConcentration transducers (electrical) - BConcrete Foundations BF MFConcrete pipes BR MRConcrete vessels BB KDCondensation chambers KDCondensers AC KCConductivity converters - BConductivity measuring circuits CQConductivity meters - BConductivity transducers - B


List of Terms


KKS


Componentkey

Constant hangars MUContact- making pressure gauges (electrical) - PContact- making pressure gauges (non- electrical) QPContact- making thermometers (electrical) - PContact- making thermometers (electrical) QPContactors (electrical) - KContactors (non- electrical switches) KBContinuous conveyors AF KFControl rod - see absorber assemblyControl switches - SControl valve operators (electrical) - YControl valves AA KAControl valves (for instruments) AA KAControllers (electrical) - NControllers (non- electrical) QNConvectors KCConverter equipment (electrical) GUConverters (non- electrical) AUConverters (non- electrical), other than MG and MK MUConverters from electrical to other electrical variables - UConverters from non- electrical to electrical variables and vice versa - BConverters, rotary GUConveyor belts AF KFConveyor equipment AFConveyors AF KFCoolers KCCooling equipment AHCooling towers (as part of a function) ACCooling units AHCore memories - DCorrecting elements for measured variables - DCorrection capacitors - CCounter tubes - BCounters (electrical) - PCounters (non- electrical) QPCounting mechanisms QPCoupling capacitors - CCoupling elements - SCoupling units AUCouplings, clutches MKCouplings, clutches (as valves) AA KACovers AB KBCrane bridges AECrane hoists AECrane rails BQCrane trolleys AECranes AECriteria indication devices - DCrossbar distributors - XCrossbeams BQCrushers KJCrushing equipment, only if part of a process AJCrushing machines KJCrystal filters (electrical) - ZCrystal transducers - BCurrent (voltage) frequency converters - U


List of Terms




Current limiting coils - LCurrent measuring circuits (apparent, active, reactive), electrical CECurrent- operated earth- leakage circuit breakers - FCurrent transformers - TCutting equipment (part of process) AJCutting machines AW KWCyclones ATDamboards KBDampers KADamping elements (mechanical) MUDamping equipment (electrical) - ZDamping equipment (mechanical) BQDamping resistors (electrical) - RDams AB KBData input/output equipment for automation systems GKData input/output equipment for process computers GKDatum reservoirs (in measuring circuits) QSDC converters - GDC current transformers - UDC current/voltage transformers - UDC generating equipment GRDC motors - MDC voltage transformers - UDecade switches - SDecanters AT KTDecoders - UDecoding equipment - UDehumidifiers AT KTDelay devices (electrical) - DDelay lines - DDemineralizers (chemical dryers) AT KTDemineralizers (filters) AT KTDemodulators - UDensity control circuits DDDensity measuring circuits, direct CDDensity measuring circuits, indirect FDDensity measuring instruments (non- electrical) QPDensity sensors (electrical) - BDensity transducers (electrical) - BDesorber columns AT KTDesuperheaters KCDevices for alarm signaling - HDevices for analog data storage - NDevices for limit monitoring - FDevices for protection - FDevices for reactor protection - FDevices for time signaling - HDials - SDiaphragm check valves AA KADiaphragm compressors AN KNDiaphragm gate valves AA KADiaphragm isolation valves AA KADiaphragm pressure sensors QBDiaphragm pumps AP KPDiaphragms QBDiesel engines MM


List of Terms


KKS


Componentkey

Differential pressure measuring circuits CPDifferential pressure transducers - BDifferentiating filters - ZDifferentiators - NDiffusers BSDigital computer- based controllers - DDigital computers - DDigital controllers - DDigital equipment - DDigital pulse shapers - DDigital- to- analog converters - UDiode matrix - DDiodes - VDipoles - WDirect contact heat exchangers AC KCDirectional joints for hollow waveguides (electrical) - WDirt traps AT KTDisc brakes MBDischarge equipment AFDisconnect plugs - XDisconnect sockets - XDisconnecting links (electrical) - QDiscrepancy switches - SDiscriminators - UDisk memories - DDistance control circuits DGDistance measuring circuits, direct CGDistance measuring circuits, indirect FGDistance measuring instruments (non- electrical) QPDistance sensors (electrical) - BDistance transducers - BDistillers ATDNB margin measuring circuits CQDocument readers - DDoors AB KBDose meter reading devices QPDose meters QBDosing equipment AFDosing pumps AP KPDotted- line recorders AP KPDouble pipe heat exchangers AC KCDouble- screw pumps AP KPDowncomers MRDrains traps AT KTDrilling machines AW KWDriving gear AE KEDrop- annunciator relays - HDrop- indicator relays - HDrum brakes MBDrum controllers - QDrum kilns AV KVDrum memories (electrical) - DDrum mills AJ KJDryers KTDrying equipment ATDrying presses AT


List of Terms




Ducts MRDuctwork BRDuctwork components MRDuplicating equipment (electrical) BRDust collectors ATDynamometers - BEarth fault measuring circuits CEEarth sounders (level measurement) - BEarthing bars - WEarthing disconnectors - QEarthing equipment GVEarthing jumpers - XEarthing switches - QEddy current brakes, operators - YEddy current braking equipment AUEdging tools AW KWElectric arc welding machines, stationary AWElectric hoists AEElectric motor actuators - YElectric motors - MElectrical adjusters, not electric motors - YElectrical and I & C assemblies (black box) GHElectrical filters - ZElectrical power measuring circuits (apparent, active, reactive) CEElectrical variables control circuits DEElectrical variables measuring circuits, direct CEElectrical variables measuring circuits, indirect FEElectrical work measuring circuits (apparent, active, reactive) CEElectro- hydraulic actuators - YElectromagnetic filters ATElectromagnetic pumps APElectromagnetic separators ATElectromagnetical operated clutch units AUElectromagnetical operated clutches, coupling parts MKElectromagnetical operated clutches, driving parts - YElectromagnets - YElectromechanical controllers - NElectromechanical level measuring circuits CLElectron tubes - VElectron valves - VElectronic and electromechanical controllers - NElectronic cards - AElectronic controllers (continuous and discontinuous action) - NElectronic modules - AElectronic signal monitoring equipment - FElectronic switches - SElectropneumatic actuators - YElectrostatic precipitators AT KTEnclosures BUEngines (non- electrical) MMEntalphy measuring circuits CUEntropy measuring circuits CUEqualizers (electrical) CUErmeto pipe connectors MREscalators AFEvaporators (for separation) AT KT


List of Terms


KKS


Componentkey

Evaporators (heat exchangers) AC KCExcursion recorders - HExpansion control circuits DYExpansion measuring circuits, direct CYExpansion measuring circuits, indirect FYExpansion measuring instruments (non- electrical) QPExpansion sensors (electrical) - BExpansion sensors (mechanical) QBExternal shoe brakes MBExtractor units ATExtractor vessels ATExtractors (part of air ejector) BNExtractors (with separate drive) ATExtreme value selectors - NExtruders AF KFFan units ANFans KNFault recorders - PFault value recorders - PFeed heater safety equipment AA KAFeed heaters AC KCFeeders AF KFField circuit breakers (electrical) - QField discharge resistors (electrical) - RField strength measuring circuits (electrical) CEFilter changing equipment AW KWFilter elements KTFilter presses (pressure filtration) ATFilter vessels KDFiltering equipment ATFilters (electrical) - ZFilters (non- electrical) KTFinned spray coolers AC KCFire alarms - BFire alarms - HFire breaks AB KBFire dampers AA KAFire extinguishers as equipment units BBFire- fighting valves AA KAFire- hose cabinets BUFire hydrants AAFiring equipment AVFittings MRFixed resistors (electrical) - RFlag indicators - HFlags - HFlame cutting machines AW KWFlame detectors - FFlange couplings MKFlanged face clutches MKFlanges MRFlash tank vessels, other than QS KDFlash tanks BB KDFlasher relays - KFlexible couplings MKFloat- type flow meters (non- electrical) QP


List of Terms




Flocculators ATFloor gratings BQFloor supports MUFlow control circuits DFFlow controllers (electrical) - BFlow controllers (non- electrical) QNFlow diverters MRFlow indicators (sight glasses) QPFlow limiters KAFlow limiters (as valves) AA KAFlow limiters (not valves) BPFlow measuring circuits, direct CFFlow measuring circuits, indirect FFFlow metering equipment (non- electrical) QPFlow meters (non- electrical) QPFlow meters, inductive - BFlow meters, ultrasonic - BFlow monitors - FFlow nozzles QPFlow restrictor assemblies (nucl.) JDFlow restrictor nozzles BP KAFlow restrictors (non- electrical) QBFlow restrictors (not metering orifices) BPFlow restrictors (nucl.) JDFlow restrictors, as instrumentation (non- electrical) JDFlow sensors (electrical) - BFlow sensors (non- electrical) QBFlow transducers - BFlue gas catalytic converter modules BTFluid couplings MKFluid gears MGFlyball governors QNFolding doors AB KBForce measuring circuits CWForging hammers KWForging machines AW KWFouling measuring instruments (non- electrical) QPFoundations BF MFFractionating columns ATFreewheeling clutches MKFrequency changers - NFrequency control circuits DSFrequency current converters - UFrequency demodulators - UFrequency departure meters - ZFrequency measuring circuits, direct CSFrequency measuring circuits, indirect FSFrequency measuring instruments - PFrequency meters - PFrequency modulators - UFrequency scalers - DFrequency sensors (electrical) - BFrequency transformers - UFrequency voltage converters - UFriction clutches MKFuel assemblies JB


List of Terms


KKS


Componentkey

Full disc brakes MBFume extractors AN KNFunction fuses - FFunction generators - NFunction keys - SFunctional group control devices - DFunctional group monitoring devices - PFuse boxes - FFuse disconnectors - QFused load- break switches - QFuses - FGas analyzers QPGas burners AV KVGas circulators AN KNGas cylinder valves AA KAGas cylinders KDGas discharge tubes - VGas engines MMGas injection equipment AMGas pilot burners AV KVGas scrubbers AT KTGas stripper columns KTGas strippers KTGas turbines MTGas valves KAGates KBGating elements - DGear pumps AP KPGearbox units AUGearboxes MGGenerator units AGGenerators - GGlobe valves KAGranulating equipment (for size reduction) AJGranulating equipment (for treatment) AWGraph calculators - NGrates KVGrates (classifying) KTGrates (combustion equipment) AV KVGrid- spring couplings MKGrinding machines AW KWGripping or lifting gear KEGroup control devices - DGuard pipes, other than QT MRGullies KDGullies BRHall- effect generators - BHall- effect probes - BHammer crushers AJ KJHandling equipment, stationary AWHandling equipment, stationary for maintenance KWHangers BQ MUHannemann governors QNHatch gates AB KBHeaders BBHeat exchange surfaces AC


List of Terms




Heat exchangers KCHeat flux measuring circuits CUHeat rate measuring circuits CUHeat treatment furnaces AW KWHeater coils - EHeater rods - EHeaters AHHeaters - see once- trough heaters or feed heatersHeating blankets (electrical) - EHeating boilers AHHeating elements (electrical) - EHeating elements (non- electrical) KCHeating equipment AHHeating strips - see trace heatersHeating system circulation pumps AP KPHeating units AHHeating wires - EHelical compressors AN KNHigh- speed circuit- breakers - QHigh, low and band- pass filters - ZHinged gates AB KBHoisting gear AE KEHoisting mechanisms AE KEHollow waveguides (electrical) - WHoods BUHoppers BBHorns - HHose connectors MRHoses BRHot- water boilers AHHours- run meters - PHumidifiers AHHumidity control circuits DMHumidity converters (electrical) - BHumidity measuring circuits, direct CMHumidity measuring circuits, indirect FMHumidity measuring instruments (non- electrical) QPHumidity monitory (electrical) - FHumidity sensors (electrical) - BHumidity transducers - BHV asynchronous motors with squirrel- cage rotor - MHV circuit breakers - QHV disconnectors - QHV switch- disconnectors - QHV switches - QHV synchronous motors - MHVHRC fuses - FHydrants AAHydraulic couplings MKHydraulic motors MMHydraulic turbines MTIgniters - EIlluminance measuring circuits CRIlluminated momentary contact push buttons - SIlluminated switches - SImpedance converters - N


List of Terms


KKS


Componentkey

Impulse relays - KIndexing mechanisms MGIndicators (electrical) - PIndicators (non- electrical) QPIndividual control devices - DIndividual printed circuit boards - DInductance- capacitance filters - ZInductance measuring circuits CEInductances - LInductive potentiometers - BInfrared devices - BInitiators - BInjectors BNInlets (piping components) MRInput devices for measured variables - BInput devices, analog - NInput devices, binary - DInside shoe brakes MBInside wall linings - see insulationInspection glasses (flow, level) QPInstrument isolation valves KAInstrument lines QRInstrument racks BQInsulation BUInsulators (electrical) - FIntegrator - NInterface layer control circuits DLInterface layer measuring circuits, direct CLInterface layer measuring circuits, indirect FLInterface modules - DInterference and spark suppression equipment (electrical) - ZInterlocks, mechanical MBInverse- time and definite- time overcurrent releases - FInverters - GInverters (electrical) - UInverting amplifiers - NIon exchangers AT KTIonization chambers - BIsolation dampers AA KAIsolation gate valves AA KAIsolation globe valves AA KAIsolation valve assemblies AAJack plugs - XJet cleaning equipment AT KTJet ejectors BNJet pumps AP KPJumper wires - WJunction boxes (electrical), GA- GG available GAJunction boxes (electrical), GA- GG available GBJunction boxes (electrical), GA- GG available GCJunction boxes (electrical), GA- GG available GDJunction boxes (electrical), GA- GG available GEJunction boxes (electrical), GA- GG available GFJunction boxes (electrical), GA- GG available GGJunction boxes for light- current- systems of national telecommunications GMJunction boxes for light- current systems, other than GM GY


List of Terms




Junction boxes for lighting GPKeyboards - SKeyless compression couplings MKLamp poles BQLasers - ALathes AW KWLength control circuits DGLength measuring circuits, direct CGLength measuring circuits, indirect FGLength measuring instruments (non- electrical) QPLength sensors (electrical) - BLength transducers - BLevel control circuits DLLevel gauges (magnetic) QPLevel indicators (non- electrical) QPLevel measuring circuits, direct CLLevel measuring circuits, direct CLLevel measuring circuits, indirect FLLevel monitors - FLevel transducers - BLift check valves AA KALift check valves, damped AA KALifting platforms AELight fittings - ELight fittings complete with lamps - ELight switches - QLighting equipment - ELightning protection equipment GVLimit switches - SLimiters (electrical) - ZLine monitors - FLiners BSLinings - see insulationLink conveyors AF KFLinkages MULiquid crystal displays - PLiquid level control circuits DLLiquid level controllers (non- electrical) QNLiquid level measuring circuits, direct CLLiquid level measuring circuits, indirect FLLiquid level measuring instruments (non- electrical) QPLiquid ring compressors AN KNLiquid ring pumps AP KPLiquid starters (starting resistor electrical) - RLoad cells (electrical) - BLoad cells (non- electrical) QBLocal control stations - ALock out coils - YLogic elements (electrical) - DLogic testing equipment - PLoudspeakers - HLouver dampers AA KALow voltage circuit- breakers - QLow voltage disconnectors - QLow voltage switch- disconnectors - QLow voltage switches - Q


List of Terms


KKS


Componentkey

Lubricating equipment AFMachine casing parts (for main and heavy machinery) HAMachine foundations MFMachine rotating parts (for main and heavy machinery) HBMachine tools AW KWMachine tools, stationary AWMachine tools, stationary for maintenance KWMagnetic drums KTMagnetic field transducers - BMagnetic filters - see electromagnetic filtersMagnetic particle clutches MKMagnetic tape memories - DMagnetic tape units - DMagnetoresistive potentiometer - BMain grates AV KVMaintained- contact rotary control switches - SManipulators AEManual input measuring circuits, direct (manually- operated sensors) CHMarshaling racks - XMasers - AMass control circuits DWMass flow control circuits DFMass flow density measuring circuits CFMass flow limiters KAMass flow limiters (as valves) AA KAMass flow limiters (not valves) BPMass flow measuring circuits CFMass flow measuring circuits, direct CFMass flow measuring circuits, indirect FFMass flow sensors (non- electrical) QBMass measuring circuits, direct CWMass measuring circuits, indirect FWMass measuring instruments QPMaterial property control circuits, other than DD, DM, DV DQMaterial property measuring circuits, direct, other than CD, CM, CV CQMaterial property measuring circuits, indirect, other than FD, FM, FV FQMeasuring circuit isolation valves KAMeasuring circuits for combined valves CUMeasuring instruments (electrical) - PMeasuring instruments (non- electrical) QPMechanical power measuring circuits (electrical power = CE) CUMechanical work measuring circuits (electrical work = CE) CUMelting furnaces AW KWMemories (electrical) - DMemory devices (electrical) - DMemory devices (mechanical) BBMercury arc rectifiers - VMetal- to- metal clutches MKMetallic grid flexible couplings MKMetering equipment AFMetering orifices QBMetering pumps AP KPMeters - PMicro fuses - FMicrophones - BMilling machines AW KW


List of Terms




Mills AJ KJMiniature circuit breakers - FMiniaturized control equipment - SMixers KMMixing units AMModems - UModerator assemblies JMModulating valves AA KAModulators - UMomentary- contact limit switches - SMomentary- contact push buttons - SMomentary- contact relays - KMomentary- contact rocker switches - SMomentary- contact rotary control switches - SMomentary- contact switch assemblies - SMomentary- contact tumbler switches - SMonitoring devices (electrical) - DMonitoring equipment for plant maintenance AXMonitoring modules (electrical) - AMonitors - FMonitors - PMonostable elements - DMotor control centers GSMotor generators - GMotor protection switches - QMotor terminal boxes - XMotorized potentiometers - RMotors (electrical) - MMotors (non- electrical) MMMounting racks BQMufflers BSMultiblade dampers AA KAMultifuel engines MMMultiple- disc brakes MBMultiple plugs - XMultiplexers - UMultipoint selector switches - SMultiport ball valves AA KAMultiport check valves AA KAMultiport dampers AA KAMultiport gate valves AA KAMultiport globe valves AA KAMultipurpose valves AA KANeutral balancing capacitors - CNeutral disconnectors - QNeutralizing equipment AM KMNeutron flux control circuits for reactor power DXNeutron flux measuring circuits for reactor power, direct CXNeutron flux measuring circuits for reactor power, indirect FXNeutron flux transducers - BNeutron sources JNNon- linear resistors - RNozzles MRNozzles - see flow restrictor nozzles or flow nozzlesNTC and PTC thermistors (electrical) - ROil burners AV KV


List of Terms


KKS


Componentkey

Oil- driven turbines MTOil separators AT KTOil sight glasses QPOilers KFOnce- through heaters AHOpen vessels BB KDOperating counters - POperating devices - SOperating mechanism (freewheeling clutch) MKOperational amplifiers - NOperator I/O typewriters - YOperator service equipment for process computers GKOperator service equipment for programmable controllers GKOptical character readers - UOptical transformers - BOptical waveguides - WOpto- isolators - UOrifice plates QBOrifices (not metering) BP KAOscillators - GOscillographs - POscilloscopes - POuter sheating BUOutlet amplifiers - DOutlet valves AA KAOutlets (piping components) MROutput devices, analog - NOutput devices, binary - DOutside shoe brakes MBOvercurrent protective devices - FOvercurrent releases, magnetic - FOvercurrent short- circuiting switches - FOverrunning clutches MKOverspeed trips - FOvervoltage protectors (electrical) - FPackaging equipment, only if part of process AKPackaging machines KKPacked clutches MKPattern moulding machines AW KWPawls MBPegging steam safety valves AA KAPelletizing equipment AKPendulum mills AJ KJPenetration assemblies BQ MRPeriod (electrical) measuring circuits CEPeristaltic pumps AP KPPermanent magnets - YPersonnel transport equipment AE KEPetrol engines MMPetrol traps (physical separation) AT KTpH converters - BpH measuring circuits CQpH transducers - BPhotocells - BPhotoelectric barriers - BPhotoelectric cells - B


List of Terms




Photoresistors - BPick- ups - BPiezoelectric transducers - BPilot oil burners (incl. Backup burners) AV KVPilot pulverized fuel burners AV KVPilot valves AA KAPinch valves KAPinned couplings MKPipe bends MRPipe connectors MRPipe elbows MRPipe unions MRPiping BRPiping penetrations BQPiping products MRPiston compressors AN KNPlaning, slotting machines AW KWPlate- type heat exchangers AC KCPlatforms BQPlenum assemblies JGPlotters - YPlug distributors - XPlug- in cards - APlugs - XPockets (only for sensors protection) QTPole changing controls - QPolishing machines AWPolysius screws KFPosition control circuits DGPosition controllers (non- electrical) QNPosition measuring circuits, direct CGPosition measuring circuits, indirect FGPosition measuring instruments (non- electrical) QPPosition monitors - BPosition sensors (electrical) - BPosition sensors (non- electrical) QPPosition transducers - BPositioner, electrical (not electric motor) - YPositioner, non- electrical MSPositioning drives, electrical (electric motor) - MPositioning gearboxes MGPositive- displacement fans AN KNPotential measuring instruments - BPotentiometers - RPower amplifiers - NPower contractors - KPower counters - PPower density measuring circuits (electromagn.) CEPower density measuring circuits (mechan.) CUPower outlets (electrical) GQPower supplies - GPower supply equipment - GPower supply modules - GPower supply units - GPower switchgear - QPowered manipulators AE


List of Terms


KKS


Componentkey

Prandtl tubes QBPrecipitation vessels KTPress tools AWPresses (packaging) KKPresses (tools) KWPressure cells (electrical) - BPressure control circuits DPPressure controllers (electrical) - NPressure controllers (non- electrical) QNPressure gauges QPPressure measuring circuits, direct CPPressure measuring circuits, indirect FPPressure measuring devices (non- electrical) QPPressure reducing valves AA KAPressure sensors - PPressure sensors (electrical) - BPressure switches - FPressure switches - SPressure test closures KAPressure- to- pressure converters QBPressure transducers (electrical) - BPressure vessels BB KDPressurizers BB KDPrinted circuit boards (electrical) - APrinters - YProgrammable controllers - DProgramming plugs - XProportioners KFProportioning equipment AFProportioning pumps AP KPProportioning valves AA KAProtective equipment (electrical) - FProtective relays (electrical- magnetical) - FProximity switches - BPulse counters - DPulse generators (electrical) - BPulse measuring instruments (non- electrical) QPPulse shapers - DPulverized fuel burners AV KVPump units APPumps KPPunches AW KWPush buttons - SPylons BQPyrometers - BQuality variable control circuits, direct, other than CD, CM, CV CQQuality variable control circuits, indirect, other than FD, FM, FV FQQuality variable control circuits, other than DD, DM, DV DQQuality variable sensors (electrical) - BQuartz oscillators - GQuick- closing check valves AA KAR/C Filters - ZRabbles AM KMRacks for electrical and I & C equipment GZRacks, other than GZ BQRadar detectors (level) - B


List of Terms




Radial- flow blowers AN KNRadial- flow compressors AN KNRadial- flow fans AN KNRadiation control circuits DRRadiation detectors - BRadiation measuring circuits, direct CRRadiation measuring circuits, indirect FRRadiation measuring instruments - BRadiation monitors - ERadiation sensors (electrical) - BRadiation transducers - BRadiators KCRadiators as equipment units AHRadio relay systems, PLS and UHF - WRadio sets - BRadio transmitters - ERailings BQRails BQRapping gear (for separation) ATReaction vessels BB KDReceivers (electrical) - EReciprocating compressors AN KNReciprocating pumps AP KPRecombiners AT KTRecorders - PRectifier components - GRectifiers - VReducers MRReduction gearings MGReed relays - KReflector assemblies JFRefrigerating heat exchangers AC KCRefrigerators AHRefuse shredders AJ KJRegisters - DRegulating ball valves AA KARegulating dampers AA KARegulating gate valves AA KARegulating resistors - RRegulating valve assemblies AA KAReheaters AC KCRelay modules - DRelays - KReleasing controllers ASRelief valves AA KARemote control devices - URemote- indicating circuit- breakers - FRemote manipulators KERemote position sensors - BResistance devices - RResistance heating devices AHResistance measuring circuits (apparent, active, reactive) CEResistance thermometers - BResistance trace heaters (electrical) - EResistors (electrical) - RRetarded combustion grates AV KV


List of Terms


KKS


Componentkey

RF transmission paths - WRheostatic starters (electrical) - RRheostats - RRinsing basins KDRinsing equipment AT KTRocker switches - SRoller conveyors AF KFRoller crushers AJ KJRoller grates AV KVRoller mills AJ KJRolling equipment (machine tools) AW KWRolling gates AB KBRoots blower AN KNRope drives MURope winches AE KERotary air heaters AHRotary blowers AN KNRotary brushes KTRotary compressors AN KNRotary displacement pumps AP KPRotary filters AT KTRotary mixers AM KMRotary piston blowers AN KNRotary piston compressors AN KNRotary piston pumps AP KPRotary resolvers - HRotary thickeners AM KMRotary transformers - TRotary valve compressors AN KNRotary valve pumps AP KPRotary vane compressors AN KNRotary vane feeders AF KFRotating drums - SRT- type pipe unions MRRubber flexible couplings MKRupture discs KARupture- type safety equipment AASafety check valves AA KASafety clutches MKSafety dampers AA KASafety valves AA KASand classifiers KTSawing machines (machine tools) AW KWScale- link travelling grates AV KVScraper chain conveyors AF KFScraper conveyors AFScrapers KTScreening machines ATScreens KTScreens (for cleaning) KTScrew compressors AN KNScrew conveyors AF KFScrew- in fuses - FScrew pumps AP KPScrubber towers AT KTScrubbers AT KT


List of Terms




Selector switches - SSelectors (electrical) - SSemiconductors - VSensors (electrical) - BSensors (non- electrical) QBSensors (only if not structurally integral with QP) QBSeparating equipment AT KTSeparating machines AT KTSeparator valves AA KASeparators AT KTSequence annunciators - HSequencers - DServo- mechanism (non- electrical), other than MG and MK MUServo- mechanism equipment AUSetpoint adjusters - NSettering orifices QBSettling ponds BB KDSettling tanks AT KDShafts (for erection and maintenance only) BEShakers KTShaking equipment ATShaping machines (machine tools) AW KWShear blades (machine tools) AW KWShear bolt couplings MKSheating BUShielding - see insulationShielding equipment, nuclear JSShift registers (eletrot.) - DShock absorbers BQShoe brakes MBShort- circuiting equipment (electrical) - FShowers ATShunt resistors - RShunts - RSight glasses QPSignal blockers - DSignal conditioning for computers (EM- EQ available) EMSignal conditioning for computers (EM- EQ available) ENSignal conditioning for computers (EM- EQ available) EPSignal conditioning for computers (EM- EQ available) EQSignal conditioning for controls (EA- EE available) EASignal conditioning for controls (EA- EE available) EBSignal conditioning for controls (EA- EE available) ECSignal conditioning for controls (EA- EE available) EDSignal conditioning for controls (EA- EE available) EESignal conditioning for protection (EW- EZ available) EWSignal conditioning for protection (EW- EZ available) EXSignal conditioning for protection (EW- EZ available) EYSignal conditioning for protection (EW- EZ available) EZSignal conditioning for reactor protection ERSignal conditioning for signaling (EG- EK available) EGSignal conditioning for signaling (EG- EK available) EHSignal conditioning for signaling (EG- EK available) EJSignal conditioning for signaling (EG- EK available) EKSignal conditioning, combined EUSignal converters - N


List of Terms


KKS


Componentkey

Signal converters - USignal devices (electrical) - HSignal fuses - FSignal isolators - USignaling equipment (electrical) - HSignaling equipment (non- electrical) QHSignaling lamps - HSignaling modules - HSilencers BSSimulators - PSiphon loops MRSira valves AA KASirens - HSlat conveyors KFSleeve couplings MKSlewing crushers AJ KJSlewing gates AB KBSlewing mechanisms AE KESliding gates AB KBSmoke detectors QHSmoothing chokes - LSnubbers BQSocket outlets - XSockets (power outlets, electrical) - XSolder tag blocks - XSolenoid actuators - YSolenoid locking actuators - YSolenoid valves AASolenoids - YSolid waste balers AK KKSoot- blowers AT KTSound pressure measuring circuits CPSpecial assemblies (nuclear) JZSpecial components (electrical) - ESpecific gravity measuring circuits CDSpecific volume measuring circuits CDSpectrometers - BSpeed control circuits DSSpeed governors (non- electrical) QNSpeed measuring circuits, direct CSSpeed measuring circuits, indirect FSSpeed measuring devices (non- electrical) QPSpeed measuring instruments (non- electrical) QPSpeed sensors (electrical) - BSpeed transducers (electrical) - BSpherical cap luminous annunciators - HSpray attemporators AC KCSpray- coating equipment AW KWSpray equipment ATSpring clutches MKSprinkling equipment (for aerating/deaerating) ATSprinkling equipment (for cooling) ACSprinkling equipment (for separation) ATStairways BQStandard volume measuring circuits CDStar- delta starters - Q


List of Terms




Starter motors (electrical) - MStarters - DStarters (electrical) - RStarting engines (non- electrical) MMStatic converters - GStatic inverters - GStationary grates KVSteam conditioning valves AA KASteam drums AT KDSteam engines MMSteam generators AC KCSteam jet refrigerators AHSteam- operated air ejectors BNSteam- operated jet pumps KPSteam rate, special measuring circuits CUSteam soot- blowers ATSteam turbines MTSteam valves AA KASteel pylons BQSteel spring clutches MKStirring equipment AMStirring units AMStopcocks AA KAStorage and memory functions - DStorage tanks BB KDStork spargers KTStrain gauge cells - BStrain gauges - BStrain transducers - BStrength measuring circuits CUStrippers AT KTStructural supports for electrical and I & C equipment GZStructural supports, other than GZ BQSubassemblies - ASubassemblies (not assignable to another letter) - ASubassemblies for high- voltage switchgear - ASubassemblies for instrumentation and control - ASubassemblies for low- voltage switchgear - ASubmersible pumps APSunken gates AB KBSuperheaters AC KCSupport frames BQSupports for electrical and I & C equipment GZSupports, other than GZ BQSurface heat exchangers AC KCSurge arrester systems GVSurge arresters - FSurge conductors - FSurge diverters - FSurge protective devices - FSurge short- circuiters - FSurge tanks (in measuring circuits) QSSurge tanks (system engineering) KDSwing check valves AA KASwing check valves, damped AA KASwitches in main power circuits - Q


List of Terms


KKS


Componentkey

Switches in protective circuitry - QSwitches, electrical - SSwitchgear equipment (if not identified under procedure equipment) GSSwitchgear trucks GS - ASwitchgear, automatic GSSynchro- generators (electrical) - BSynchronization monitoring devices - FSynchronous motors - MTachometer generators - BTachometers (electrical) - BTanks KDTap changers for transformers - QTape punches AWTelecommunication cables - WTelegraphic translators - UTelemeters - PTelephone sets - BTelephones - BTemperature control circuits DTTemperature controllers (non- electrical) QNTemperature measuring circuits, direct CTTemperature measuring circuits, indirect FTTemperature measuring instruments (non- electrical) QPTemperature monitors - FTemperature sensors (electrical) - BTemperature sensors (non- electrical) QPTemperature transducers (electrical) - BTensioning equipment, not for electrical control variables ASTerminal blocks - XTerminals - XTerminations (electrical) - ZTest adapters - PTest equipment (electrical) - PTest equipment (non- electrical) QPTest equipment for plant maintenance AXTest fittings - PTest jacks - XTest plugs - XTesting fixtures AX QPTesting machines AXThermal insulation BUThermal power measuring circuits CUThermal quantity measuring circuits CUThermal/cutting machine tools AWThermocouples - BThermoelectric cells - BThermoelectric sensors - BThermometers (non- electrical) QPThermostats - BThermowells (only for sensor protection) QTThickeners ATThickening evaporators ATThin- film evaporators for separating media ATThrottling valves AA KAThrough conveyors AF KFThyratrons - V


List of Terms




Thyristor controllers - GThyristors - VTime control circuits DKTime- delay relays - KTime measuring circuits, direct CKTime measuring circuits, indirect FKTime measuring instruments (non- electrical) QPTime monitors - DTime transducers - BTimers - DTiming accessories - DTiming relays - KTipping equipment AETooling, stationary AW KWToothed couplings MKTorque measuring circuits CWTrace heating equipment AHTransducers - BTransductors - NTransformer circulation pumps AP KPTransformer equipment GTTransformer load devices - QTransformers - TTransistors - VTransmission gear (non- electrical), other than MG, MK MUTransmission paths (electrical) - WTransmission shafts (non- electrical) MUTransport gear AE KETravelling grates AV KVTriacs - VTrigger equipment - NTrips, magnetic - FTrolleys (associated with process) AETube mills AJ KJTubes (electrical) - VTubs BB KDTumbler switches - STun dishes MRTunnel diodes - VTurbines (not main and heavy machinery) MTTurbocompressors AN KNTurbofans AN KNTurning gear AE KETurntables (for railway vehicles) AE KETV cameras - EUltrasonic cleaning equipment ATUltrasonic instruments - BUnderfeed stokers AV KVUniselectors - SUniversal- fuel engines (non- electrical) MMUniversal motors (electrical) - MVacuum breakers AA KAValve assemblies (valve blank) AAValve boxes KAValve chests KAValves (electrical) - V


List of Terms


KKS


Componentkey

Valves, dampers, etc., incl. Actuators, also manual AAValves, excl. Actuators KAVane pumps AP KPVapor compression refrigerators AHVapor extractors AN KNVaposcopes AA KAVariable capacitance diodes - VVent valves AA KAVentilation ducts BR MRVenturis QBVessel level measuring circuits CLVibrating control circuits DYVibrating conveyors AF KFVibrating screens AT KTVibration detectors (electrical) - BVibration measuring circuits, direct CYVibration measuring circuits, indirect FYVibration measuring instruments (non- electrical) QVVibration sensors - BVibration transducers - BVibrators (for separating) AT KTVideo display units - PVideo screens - EViscosity control circuits DVViscosity measuring circuits, direct CVViscosity measuring circuits, indirect FVViscosity measuring instruments (non- electrical) QPViscosity sensors (electrical) - BVoltage measuring circuits (electrical) CEVoltage monitors - FVoltage operated earth- leakage circuit- breakers - FVoltage transformers - TVolume measuring circuits (for vessels) CLVolume measuring circuits (not for vessels) CUVolumetric flow measuring circuits CFVolumetric flow rate measuring circuits CFVolumetric flow sensors (electrical) - BVolumetric flow sensors (non- electrical) QBWaldron couplings MKWashing machines ATWater meters QPWater- operated air ejectors BNWater- operated jet pumps BNWater soot- blowers AT KTWaterhammer suppressors AA KAWave traps (electrical) - LWeighing machines QBWeighing machines as measuring circuits CWWeight control circuits DWWeight measuring circuits CWWeight measuring circuits, direct CWWeight measuring circuits, indirect FWWeight measuring instruments (non- electrical) QPWeight transducers (electrical) - BWeirs ABWelded joints MR


List of Terms




Welding machines AWWinches AE KEWindows AB KBWork meters - PZener diodes - V

kks reference

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