Intrinsically Safe Process control training presented by Grant - - PowerPoint PPT Presentation

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Intrinsically Safe Process control training presented by Grant - - PowerPoint PPT Presentation

Sep 10, 2022 207 likes •551 views

Intrinsically Safe Process control training presented by Grant Paul Novaris Pty Ltd Hazardous Areas Hazardous area an area where concentrations of flammable gases, vapors, or dusts may occur. Offshore platforms Petrochemical plants

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Intrinsically Safe Process control training

presented by

Novaris Pty Ltd Grant Paul

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Hazardous Areas

Hazardous area – an area where concentrations

  • f flammable gases, vapors, or dusts may occur.
  • Offshore platforms
  • Petrochemical plants
  • Oil and gas tankers
  • Gas pipelines
  • Mines
  • Flour mills
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Hazardous Areas

Novaris Intrinsically Safe (IS) range

EEx ia IIC T4. (Type ia, Group 2C gases, Temperature category 4).

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Hazardous Areas

Gas zones

Zone 0 Flammable atmosphere highly likely to be present - may be present for long periods or even continuously (>10%) Zone 1 Flammable atmosphere possible but unlikely to be present for long periods (<10%, >0.1%) Zone 2 Flammable atmosphere unlikely to be present except for short periods of time - typically as a result of a process fault condition. (<0.1%)

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Hazardous Areas

Gas groups

Group Representative Gases I All Underground Coal Mining. Firedamp (methane) IIA Industrial methane, propane, petrol and the majority of industrial IIB Ethylene, coke oven gas and other industrial gases IIC Hydrogen, acetylene, carbon disulphide

IIC marked equipment can be used for both IIA and IIB

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SLIDE 7

Hazardous Areas

Temperature classification (Auto-ignition)

T-Class Hazards which will not ignite at temperatures below: T1 450°C T2 300°C T3 200°C T4 135°C T5 100°C T6 85°C

Gas Temperature Methane 580 °C Hydrogen 560 °C Propane 493 °C Ethylene 425 °C Acetylene 305 °C Naphtha 290 °C Carbon disulfide 102 °C

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Hazardous Areas – Type of Protection

Equipment Code Description Suitable for zones Ex ia Intrinsic safety 'ia' 0, 1, 2 Ex ib Intrinsic safety 'ib' 1,2 Ex ic Intrinsic Safety 'ic' 2 Ex d Flameproof protection 1,2 Ex p Purge/pressurized protection 1,2 Ex px Purge/pressurized protection 'px' 1,2 Ex py Purge/pressurized protection 'py' 1,2 Ex pz Purge/pressurized protection 'pz' 2 Ex e Increased safety 1,2 Ex m Encapsulation 1,2 Ex ma Encapsulation 0,1,2 Ex mb Encapsulation 1.2 Ex mc Encapsulation 2 Ex o Oil immersion 1,2 Ex q Sand / powder (quartz) filling 1,2 Ex n Type - n protection 2 Ex s Special protection Normally 1 and 2

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Hazardous Areas

Equipment category

Category 1 equipment may be used in zone 0, zone 1 or zone 2 areas Category 2 equipment may be used in zone 1 or zone 2 areas Category 3 equipment may only be used in zone 2 areas

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Hazardous Areas

Novaris Intrinsically Safe (IS) range

EEx ia IIC T4. (Type ia, Group 2C gases, Temperature category 4).

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Signal Line Protection for Process control

  • Plug in surge arrester module
  • Only 7mm wide
  • High Energy Design
  • Multistage Protection
  • IECEx ia IIC T4 certified
  • Failsafe design
  • Suitable for all signalling

applications

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SL Circuit Diagram

E1 E2 L1 L2

LINE LOAD

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Surge GDT MOV 2nd MOV

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Voltage vs. Frequency

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Threaded Signal Line Protectors

  • Protection for 2, 3 and 4 wire

process control transmitters

  • All mode protection
  • Does not affect calibration
  • IECEx ia IIC T4 Certified
  • M20x1.5 (IECEx Exd Certified)
  • ½” NPT
  • ¾” NPT
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SLT Circuit Diagram

SCN

L2 L1

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SSP6A Series Surge Protector

  • Plug in surge arrester

module

  • Only 7mm wide
  • 9.6kA Imax MOV

Protection

  • IECEx ia IIC T4 certified
  • Up to 6A pass through

current

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SSP6A Circuit Diagram

E1 E2 L1 L2

LINE LOAD

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Analogue and Digital I/O

Cabinet earth SL-36-G Marshalling/System Cabinet Instrument Enclosure SLT1-36-M/NXX L1 L2 E1 E2 PLC/SCADA I/O + I/O -

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SSP6A - 250mA to 6A

Cabinet earth SSP6A-26-G Marshalling/System Cabinet Instrument Enclosure SLT1-36-M/NXX L1 L2 E1 E2 PLC/SCADA I/O + I/O -

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4-20mA loop

Cabinet earth SL-420-G Marshalling/System Cabinet Instrument Enclosure SLT1-36-M/NXX L1 L2 E1 E2 PLC/SCADA I/O + I/O -

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Interposing Relay Protection

Cabnet earth SSP6A-26-G Marshalling/System Cabinet Instrument Enclosure SLT1-36-M/NXX L1 L2 E1 E2 24VDC PS 24V + 0V - CH 0 PLC/SCADA Interposing Relay 6A

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Resistive Temperature Detectors – 4 Wire

Cabinet earth SL-RTD-G Marshalling/system cabinet Instrument Enclosure SLT4-RTD-M/NXX RTD Control Instrumentation Or PLC L1 L2 E1 E2 L1 L2 E1 E2

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Resistive Temperature Detector – 3 Wire & 4 Wire

Cabinet earth SL-RTD-G Marshalling/system cabinet Instrument Enclosure SLT4-RTD-M/NXX RTD Control Instrumentation Or PLC L1 L2 E1 E2 L1 L2 E1 E2 Cabinet earth SL-RTD-G Marshalling/system cabinet Instrument Enclosure SLT4-RTD-M/NXX RTD Control Instrumentation Or PLC L1 L2 E1 E2

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HART over 4-20mA Loop

Cabinet earth SL-DH-G Marshalling/System Cabinet Instrument Enclosure SLT1-36-M/NXX L1 L2 E1 E2 PLC/SCADA I/O + I/O -

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RS232

Cabinet earth SL-DH-EC90 Marshalling/System Cabinet L1 L2 E1 E2 PLC/SCADA RX TX Common Cabinet earth SL-DH-G Marshalling/System Cabinet L1 L2 E1 E2 PLC/SCADA TX RX Common SCN SCN

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RS485

Cabinet earth SL485-EC90 Marshalling/System Cabinet L1 L2 E1 E2 PLC/SCADA TX/RX TX/RX Screen Cabinet earth SL485-EC90 Marshalling/System Cabinet L1 L2 E1 E2 PLC/SCADA TX/RX TX/RX Screen SCN SCN SCN SCN

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Multidrop RS485

Cabinet earth SL485-EC90 Marshalling/System Cabinet L1 L2 E1 E2 PLC/SCADA Tx/Rx+ Tx/Rx- Screen SCN SCN Cabinet earth SL485-EC90 Marshalling/System Cabinet L1 L2 E1 E2 PLC/SCADA Tx/Rx+ Tx/Rx- Screen Cabinet earth SL485-EC90 Marshalling/System Cabinet L1 L2 E1 E2 PLC/SCADA Tx/Rx+ Tx/Rx- Screen SCN SCN SCN SCN Cabinet earth SL485-EC90 Marshalling/system cabinet L1 L2 E1 E2 L1 L2 E1 E2 Tx/Rx+ Tx/Rx- Screen SCN SCN SCN SCN Tx/Rx+ Tx/Rx-

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RS422

Cabinet earth SL485-EC90 Marshalling/system cabinet L1 L2 E1 E2 L1 L2 E1 E2 Cabinet earth SL485-EC90 Marshalling/system cabinet L1 L2 E1 E2 L1 L2 E1 E2 Tx+ Tx- Rx+ Rx- Screen Rx+ Rx- Tx+ Tx- Screen SCN SCN SCN SCN SCN SCN SCN SCN

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Signal reference table

Signal/Protocol PLC/Cabinet Meter/Instrument ±5V Analogue or Digital SL7V5-G or SSP6A-14-G SLT1-7V5-M/NXX ±12V Analogue or Digital SL18-G or SSP6A-14-G SLT1-18-M/NXX ±24V Analogue or Digital SL36-G or SSP6A-26-G SLT1-36-M/NXX ±48V Analogue or Digital SL68-G or SSP6A-65-G SLT1-68-M/NXX ±110V Analogue or Digital SSP6A-130-G SDT2-130-M/NXX 4-20mA Loop SL420-G (also SL420i-G) SLT1-36-M/NXX 4 Wire RTD 2 x SL-RTD-G SLT4-RTD-M/NXX 3 Wire RTD 2 x SL-RTD-G SLT4-RTD-M/NXX 2 Wire RTD SL-RTD-G SLT4-RTD-M/NXX HART SL-DH-G SLT1-36-M/NXX RS232 SL-DH-G SL-DH-EC90 RS485 SL485-EC90 (also SL485i-EC90) SL485-EC90 RS422 2 x SL485-EC90 2 x SL485-EC90 Profibus DP SL485-EC90 SL485-EC90 Profibus PA SSP6A-38-G SSP6A-38-G Profinet UTP-RJ45-24CAT6 UTP-RJ45-1CAT6 Modbus Check physical layer Check physical layer Modbus – TCP UTP-RJ45-24CAT6 UTP-RJ45-1CAT6 Industrial Ethernet Network UTP-RJ45-24CAT6 UTP-RJ45-1CAT6 Computer Network (Ethernet) UTP-RJ45-24CAT6 UTP-RJ45-1CAT6

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