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SCA Question

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--- Quote --- Anyone know why the power plant SCA in California produced unusually large amounts of CO2 emissions in 1997?
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Just a guess, but if the plant was built and went commercial in 1997 and you want to know why the CO2 emissions was high in this year, the startup permit may have allowed more relaxed emission controls.  This allows the Gas Turbine supplier, construction contractor, and the plant owner to test the new turbine, perform tunning, and commission the emission monitoring system (CEMS).  It may also allow the construction company to use gas turbines for steam generation for the steam cleaning (steam blows) on the piping before startup of the steam turbine. 
Many times all the initial gas turbine testing and tuning is done before the NOx and COx catalyst is installed in the HRSG.  After the catalyst is installed, the CEMS equipment and the Ammonia systems are tested and tuned.  However these are usually the last systems to be tested during construction of the plant.  Just prior to performance testing and commercial availablity runs these emission systems are commissioned to be in compliance with the emissions permits.

This is just my assumption.

--- Quote ---Sacramento SCA Peaker Project
Location: Sacramento, California
Client: Sacramento Municipal Utility District (SMUD)
Operator: Sacramento Power Authority
Configuration: 127-MW, 2+1 combined-cycle cogen with LM6000 gas turbine
Operation: 1997
Fuel: natural gas
HRSG supplier: Nooter
T/G supplier: GE
EPC: Black & Veatch, Walsh
• Developed, Designed, Procured, and Built in 10 months

For the SCA Peaker Project, IEC served in several capacities throughout all phases of the project, including conceptual engineering, project management, field engineering, start-up and testing. Completed in April 2001, the project included one zero-timed LM6000PC unit with the Mark VI Control System, SCR and CO Catalyst, Aqueous Ammonia System, 2000-Ton Centrifugal Chiller and Deltak Exhaust Duct.
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