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Control equipment practice

Control equipment practice

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On an operational plant, the control systems that have so far been examined may be implemented in any of a variety of ways, ranging from pneumatics to advanced computer-based systems, but in all cases, it should be possible to identify the various loops within the relevant configuration. These days, most control functions are implemented by means of a computer-based system, so we shall now briefly look at a typical configuration. After that, we shall examine some of the other hardware used in the systems and then consider the environmental factors that influence the selection of control and instrumentation equipment.

Chapter Contents:

  • 8.1 A typical DCS configuration
  • 8.1.1 The central system cabinets
  • 8.1.2 Termination and marshalling
  • 8.1.3 Operator workstations
  • 8.2 Interconnections between the systems
  • 8.3 Equipment selection and environment
  • 8.4 Mechanical factors and ergonomics
  • 8.4.1 Site considerations
  • 8.4.1.1 Field equipment
  • 8.4.1.2 Actuators
  • 8.5 Electric actuators
  • 8.6 Hydraulic actuators
  • 8.7 Cabling
  • 8.7.1 Summary
  • 8.7.2 Fire-resistant, fire-retardant and low-smoke cables
  • 8.7.2.1 Fire resistant
  • 8.7.2.2 Fire-retardant, flame-retardant or fire performance cables
  • 8.7.2.3 Low-smoke halogen free
  • 8.8 Electromagnetic compatibility
  • 8.8.1 Earth connections
  • 8.8.2 Cables: armouring screening and glands
  • 8.9 Database tools
  • 8.10 Reliability of systems
  • 8.10.1 Analysing the effects of failure
  • 8.10.1.1 Failure modes in electronic systems
  • 8.10.1.2 Transmitters
  • 8.11 Summary
  • References

Inspec keywords: steam power stations; control equipment; steam plants; power generation control

Other keywords: control equipment practice; pneumatics; control functions; operational plant; advanced computer-based systems; control systems; environmental factors; instrumentation equipment

Subjects: Control of electric power systems; Steam power stations and plants

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