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Inspect Steam Valves for Stellite Delamination

Stellite liberation from large valves installed in high-pressure (HP) and hot reheat (HRH) steam systems serving F-class combined cycles has emerged as an important industry concern. EPRI has established a committee on “Cracking and Disbonding of Hardfacing Alloys in Combined-Cycle Plant Valves” to dig into the details. The work, funded by several sponsors, began early this year. John Shingledecker (jshingledecker@epri.com), the technical manager for this program, said the project timeline is estimated at 14 months.

Revision Date:  5/21/2015

Tags:  EPRI, Structural Integrity Associates, Valve, Maintenance, Delamination, Combined Cycle Journal

EPRI’s Guideline on Chemistry for Fossil Units with Air-cooled Condensers (ACCs)

This paper provides the results of the first worldwide survey of a number of fossil and combined cycle/HRSG plants with air-cooled condensers (ACCs). It includes documentation of the surface condition of the duct surfaces, defining serious corrosion/flow accelerated corrosion regions and guidelines for operating plants with ACCs.

Revision Date:  9/8/2014

Tags:  221112 - Fossil Fuel 化石燃料, Structural Integrity Associates, Xcel Energy, EPRI, Air Cooled Condenser, Cycle Chemistry, Corrosion, Dry Cooling