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Upgrading and refurbishing systems

Upgrading and refurbishing systems

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We have now reached the end of this overview of a wide and complex subject. We hope that we have been able to throw some light on the technology and that the explanations may have lifted some of the veils of mystery that sometimes seem to obscure it. The fact remains that it is a complex matter and it is unwise to entrust the safety of a plant to people who do not understand either the control aspects or the plant operations. It has been the privilege of the three of us to have worked with power plant throughout our careers, and we hope that some of what we have put down here will be useful and that it may encourage others to take up a very interesting and important subject.

Chapter Contents:

  • 12.1 Drivers for change
  • 12.2 The DCS upgrade cycle
  • 12.3 The impact of change
  • 12.3.1 Operators
  • 12.3.1.1 Loss of operational redundancy; increase in instrument and controller redundancy
  • 12.3.1.2 A new view of the process
  • 12.3.1.3 DCS to DCS upgrades: display graphics and other changes
  • 12.3.2 Maintenance
  • 12.3.3 Cyber security
  • 12.3.4 Corporate expectations
  • 12.4 Refurbishment case studies
  • 12.4.1 Multi-phase to DCS
  • 12.4.2 DCS HMI upgrade
  • 12.4.3 Complete DCS replacement
  • 12.4.4 'Transparent' control system migration
  • 12.5 Preparing for change
  • 12.5.1 Making the business case
  • 12.5.1.1 Analyse system fault data
  • 12.5.1.2 Review opportunities for improvement
  • 12.5.1.3 Minimise project costs with schedule planning
  • 12.5.2 Technical preparations
  • 12.5.2.1 Pre-project planning (PPP)
  • 12.5.2.2 Benchmarking performance
  • 12.5.2.3 Documentation updates
  • 12.5.2.4 The control room and HMI features
  • 12.5.2.5 Control enhancements
  • 12.6 Implementing the project
  • 12.7 Keeping track of system reliability and costs
  • 12.8 Change management
  • 12.9 Summary
  • 12.10 Conclusion
  • References

Inspec keywords: power plants; safety

Other keywords: plant safety; power plant; upgrading systems; refurbishing systems

Subjects: Generating stations and plants; Plant engineering, maintenance and safety

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