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New Source Performance Standards for Stationary Compression Ignition Internal Combustion Engines

Rule Summary

Stationary engines use pistons that alternately move back and forth to convert pressure into rotating motion. They are used in a variety of applications from generating electricity to powering pumps and compressors in power and manufacturing plants. They are also used in the event of an emergency such as fire or flood.

A compression ignition (CI) engine, or diesel engine, is a type of engine in which the fuel injected into the combustion chamber is ignited by a heat resulting from the compresssion of gases inside the cylinder.

The key pollutants EPA regulates from these sources includes nitrogen oxide (NOx), particulate matter (PM), sulfur dioxide (SO2), carbon monoxide (CO), and hydrocarbons (HC) .

The New Source Performance Standards (NSPS) for Stationary Compression Ignition Internal Combustion Engines is outlined in the Code of Federal Regulations under 40 CFR Part 60 Subpart IIII.

Rule History

The following is a time line of the regulatory actions that have formed the current regulations:

Additional Resources

Compliance