PSEG – Sewaren, NJ Generating Station – Natural Gas Fired Generators

PSEG Sewaren Application Note

PSEG Sewaren, NJ Generating Station Site & Application Details:

PSE&G's Sewaren Generating Station is a facility on 152 acres (62 ha) along the Arthur Kill.

  • MW: 558
  • Steam Fuel: Gas/Oil
  • Combustion Turbine Fuel: Oil
  • Technology: Turbines: 4 Steam, 1 Gas
  • Commercial Operation: Turbines I - IV: 1948-1951, Turbine VI: 1965
  • Market: Load Following

The application is to monitor emissions at two electric generating units. These units did not have continuous emission monitors, and for operational consistency, station management was interested in installing “process” monitors in the exhaust duct sections to monitor for the usual products of combustion (NOx, CO, SO2, O2) while combusting natural gas.

Cemtrex Scope of Supply:
The project consists of NOx, CO, SO2 and O2 CEMS (CLD and NDIR based), one for each Economizer (total 2). System configuration is set up to monitor two process ducts in each unit economizer section, to continuously monitor four locations in both boilers.

Cemtrex provided a Universal Analyzers, Inc. Model 560 Single Channel Sample Cooler with Sample Conditioning Panel and Sample Multiplexing Panel, along with a Series 270F Gas Sample Probe with stainless steel gas probe insertion.
A NEMA 4 19" Rack Analyzer Enclosure, approximately 72"H x 60"W x 36"D, suitable for exterior, all- weather service was also provided to house all equipment.

A Rockwell Automation Allen-Bradley CompactLogix 5370 L3 Programmable Logic controller for each process monitoring system, including a 10” Panelview Plus 6 Terminal, memory controller, Complact I/O power supply, MicroLogix expansion digital and analog input/output modules, thermocouple modules, FactoryTalk view Studio and RSLogix 5000 Mini Edition Software was supplied along with the scope of work.

The system provides independent (4 ducts) and also each Economizer averaged data (for two ducts in each Economizer) in the Remote Display with Real time display, historical trending, alarm tags with date/time stamp along with weekly calibration status. The data logger software in the remote display provides 1 min data capture frequency to 1 hour data capture frequency that can be set.

The update time for each duct is 20 secs to 30 secs in each Economizer, but the two Economizers have independent systems of their own.

Calibration Gas Cylinders and 2-stage regulators (set of four cylinders) were also provided by Cemtrex.

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