PSEG Fossil LLC is planning a number of changes at its PSEG Bergen Generating Station in Ridgefield, N.J., including replacements of combustion turbine components.
The New Jersey Department of Environmental Protection is taking public comment until Feb. 14 on related changes to the plant’s Title V air permit. Bergen Generating Station is owned and operated by PSEG Fossil LLC, which is part of Public Service Enterprise Group (NYSE: PEG).
This significant modification allows the facility to make physical and operational changes to two General Electric Frame 7FA.03 combined cycle combustion turbines. The company is proposing replacement of combustion turbine components with similar components of advanced design and/or materials of construction. These new components would allow for higher firing temperatures, reduced cooling air bypass, and increased airflow to combustion chambers. The turbine components that would be replaced are:
- combustion liner with advanced heat transfer;
- low pressure drop combustor sleeve with pressure recovery inlets;
- 3D aerodynamic/hot gas path capital parts (Stage 1, 2 and 3 buckets, nozzles and shrouds, and dove tail seals); and
- case temperature management.
Also, new software, called the OpFlex Advantage Peak Load Software, will increase the combustion turbine output over base load operation by increasing firing temperatures. The new software will be utilized only for 300 hours per year, when the combustion turbines are firing natural gas, and operating at ambient temperatures of 59 degrees Fahrenheit or higher.
There will be a slight increase in actual emissions, although the facility is not proposing any increase in allowable emissions, the DEP noted.