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Continuous-Blowdown Block Valve Reduces Startup Time

At Essential Power LLC’s Newington Energy Facility, the high-pressure (HP) steam-drum continuous blowdown system was designed to cascade flow to the intermediate-pressure (IP) steam drum. While the valve worked well for controlling flow, it did not have the degree of leak-tightness required for stopping flow from the drum during typical overnight shutdowns. An automatic full-port ball valve was installed upstream from the existing automatic control valve to eliminate the risk of flashing.

Revision Date:  5/28/2015

Tags:  221112 - Fossil Fuel 化石燃料, Valve, Leakage, Combined Cycle Journal, USA