HRSGs for Fast-Starting Combined Cycle Plants

HSRGs for Fast-Starting Combined Cycle Plants discusses key design specifications, operational issues, plant monitoring, and maintenance techniques for fast start HSRGs, including design changes in gas turbines, the operational demands of users, and a power environment that  increasingly relies on flexible baseload as a supplement to intermittent renewables. Sections cover a description of combined cycle plant components, operational principles, and fast starting. In addition, the book reviews fast start impacts in key design and operating issues, ranging from mechanical integrity, operational control, HSRG component packaging, and effective emissions controls.

Finally, the book describes the necessary steps to gauge impacts on fast starts, suggesting solutions to eliminate or minimize the impact for an HRSG with a predictable optimum life, discussing design methodology for fast start HRSGs, instrumentation and control requirements, life consumption analysis, and balance of plant design management. Final sections consider key issues in the operation of fast-starting HRSGs, including operational control, operating protocols and strategy, monitoring programs, and predictive maintenance.

• Outlines key requirements for specifying HRSGs for Fast-Starting Combined Cycle Plants
• Describes salient features of the design process to understand the impact of fast starts on critical components
• Explains the importance of proper operation protocol to preclude the possibility of premature failure
• Evaluates online monitoring tools to gauge HRSG critical component life consumption
• Provides detailed requirements for preparing effective specifications for HRSGs for fast-starting combined cycle plants
• Reviews design methodologies, analyses and guidelines for designing HRSGs
• Defines operation control protocols to avoid premature mechanical failures or performance deficiencies

PART A: SYSTEM DESCRIPTION AND REQUIREMENTS 1. Introduction - What is the Book About 2. Combined Cycle Plant Components and Operational Principles 3. Why Start Fast? How fast is fast, Compare with Regular start? 4. What is Cycling and the Relationship between Fast start and Cycling?

PART B: FAST START IMPACTS 5. Material of Construction for Superheaters, Reheaters and Drums and their properties 6. Mechanical Integrity of HRSG Components 7. Operational Control - Drum Issues 8. Mechanical Integrity of other Combined Cycle Plant Components 9. Water Chemistry and Steam Quality 10. Packaging of the HRSG Components 11. GT size and Steam Temperature and Pressure Concerns 12. Emissions

PART C: DESIGN METHODOLOGY 13. Design Methodology for Fast Start HRSGS 14. Packaging of the HRSG Components 15. Attemperators 16. Instruments and Controls Requirements for Fast Start HRSGS 17. Valves and Fitting 18. Water Chemistry 19. Analyses Required for Assessing the Life Consumption 20. Emissions Control 21. Condenser and Balance of Plant Design Management

PART D: OPERATIONAL CONTROL 22. Operation Definition and Operational Responsibility Issues 23. Operating Strategy to keep Operations within the specified limits 24. Monitoring and Monitoring Software 25. Conclusions

Akber Pasha (Vogt Consulting) brings degrees in Engineering and Business from Osmania University and University of Louisville. He joined Henry Vogt Machine company of Louisville as Design Engineer dealing with the design of Heat Transfer equipment. He has been active in issues dealing with the design and operation of Power Plant equipment, particularly Heat Recovery Steam Generators (HRSGs). The work completed by him and the company for past 50 years has become industry standard for the Design, Operation and Maintenance of HRSGs. During the last 45 years he presented numerous papers in Power conferences throughout the world. He has also developed and presented Workshops on the Design, Manufacturing, Operation, Inspection and maintenance of HRSGs. Presently he is the Consulting Technical Director at Vogt Power International of Louisville, Kentucky. He is a member of various professional organizations such ASME, IGTI, API etc.