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Liquid fuel system reliability upgrades offer several options to address key issues facing operators of dual fuel plants. Improvement is possible, whether you operate a peaking unit, simple-, or combined-cycle plant.
annual maintenance transfers
gallons per flush
per complete flush (+8 min drain cycle)
Applicable gas turbine models:
Time to install
The liquid fuel system upgrade introduces significant improvements to the 7F units, which can yield greater reliability, efficiency, and safety. Several key component enhancement options are possible.
Liquid Fuel Check Valve Relocation
With the solution for simple cycle or peaking units with low operational hours, check valves are relocated to a lower temperature area in the GT compartment. A manual drain system reduces pooling and coking.
Manual Liquid Fuel Water Flush
Using a solution for simple cycle or peaking units that shutdown regularly, manual water flush system upgrade builds on the liquid fuel valve relocation and introduces manual water flush inlet tubing and valves. To help ensure safety, control changes are required. This option can reduce recommended maintenance transfers from 52 to 2 per year.
Automated Liquid Fuel Water Flush
The solution for combined cycle plants that opt not to shutdown for liquid fuel flushing is automated liquid fuel water flush. This system upgrade automatically flushes liquid from fuel lines online with the intention to reduce coking, which is a top cause of failed starts and transfers.
The automated system modifies or introduces major components and places them strategically to improve system pressure to flush after every LF to gas transfer. This occurs with high load transfer capability up to baseload, which streamlines LF operation and maintenance. The automated water flush system also reduces maintenance transfers from 52 to 2 per year. Successful installation and validation testing of the automated liquid fuel system reliability upgrade was conducted in 2020.