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Can anyone help me find a list of vendors that use CO2 blasting to clean HRSG finned tubes? And give any feed back on the pros and cons of this cleaning method? Thanks

We are considering using the "dry ice blasting" method to clean the LP side of our HRSG. Does anyone have information on vendors that are capable of doing this. I am looking to get pricing information.

What would one expect to see if HP desuperheater control valves were leaking by. Lower superheater outlet temperatures are certain to be one. But would HP steam flow decrease as well. Would HP steam pressure also decrease.

Other than the HP and IP sections of the HRSG under performing and driving the LP section to work harder. Is there anything in the STG that would cause the HP and HRH to steam conditions to decrease while allowing the LP section to increase? Our STG is HPT section (10 stgs) with inlet conditions...

HRSG performance was performed with thermal profile only. Is there other more effective ways to perform a profile? The I&E technicians have checked the exciter controls.

Bypass system is HP bypass to CRH, then back to the HRSG to HRH and then bypassed to the condenser. And the LP steam dumps to condenser separately. Have shut all three bypass valves for 10 minutes and saw no increase in STG output. We use natural gas as fule here. Also we see our % of CRH...

2 on 1 combined cycle plant. 2 7FA with ATS HRSG to an ABB reheat steam turbine. 4 years old. Perfromed hot gas path inspection on both GT in October 2002. Noticed a drop in STG output. This was expected due to the lower TEG temperature after the inspection. In February of 2003 we had a limited...