“HRSG Design, Operation and Maintenance Considerations” was the Hot Topic on September 2, 2010

With wind and solar additions to the electrical grid, there is more need for compatible power sources to compensate for the periods when the sun isn’t shining and the wind isn’t blowing. Gas turbines will increasingly be utilized to work in tandem with renewables.

Siemens has developed a HRSG to cycle quickly with minimum negative impact on emissions and component life. The details and advantages were explained by Gary Gong. The secret is in minimizing the amount of heating and cooling of the metal surfaces in the system. The Flex-Plant HSRG can obtain full pressure and temperature in less than 20 minutes with minimal effect on emissions and maintenance. Fatigue consumption meets the design life requirements.

HRSGs have a number of components that need regular attention. Preventive maintenance and quick repair can help avoid unscheduled downtime and expensive component replacement. Peter Allison of Vogt discussed ways to address the potential problems. Preventive maintenance involves analysis of expansion joints, ductwork, hot spots, pipe supports, pipe penetration, instrumentation, and heat tracing.

The Bios and Abstracts can be viewed as follows: BIOS, ABSTRACTS - September 2, 2010.htm

The individual slides can be viewed in the Universal Decision Tree as follows:

PETER ALLISON

GARY GONG