Applications & Regulations

RICE NESHAP

RICE:  Reciprocating Internal Combustion Engine
NESHAP:  National Emission Standards for Hazardous Air Pollutants

Solutions:
GAS: 3-way Catalytic Converters
Diesel: Diesel Oxidation Catalyst

Effective Dates:
GAS - RICE NESHAP regulations for diesel/compression ignition (CI) engines  took effect on May 3, 2013.

DIESEL - RICE NESHAP regulations for gas/spark ignited (SI) engines became effective on October 19, 2013.

Summary:
The US Environmental Protection Agency passed the RICE NESHAP regulation officially in 2010 to reduce harmful exhaust gas and crankcase emissions from reciprocating internal combustion engines. Reciprocating internal combustion engines now have standards for exhaust gas emissions, crankcase emissions and have specified maintenance practices to abide by. Additionally, certain reciprocating internal combustion engines require monitoring for catalyst temperature and engine exhaust gas back-pressure.

Restrictions / Exposure Limits:

Area Source Diesel - May 3, 2013

Engine Category

Emission Standard

Components

Non-emergency 0 to 300 horsepower

Not Applicable

None

Non-Emergency 301 to 500 horsepower

49 ppmvd CO
or
70% CO reduction

- Diesel Oxidation Catalyst (DOC)
- Ultra-low sulfur fuel
- Closed Crankcase Ventilation (CCV)

Non-Emergency 501+ horsepower

23 ppmvd CO
or
70% CO reduction

- Diesel Oxidation Catalyst (DOC)
- Ultra-low sulfur fuel
- Closed Crankcase Ventilation (CCV)
- Continuous Parameter Monitoring System (CPMS)

Emergency any horsepower

Not Applicable

Major Source Diesel - May 3, 2013

Engine Category

Emission Standard

Components

Non-Emergency 100 to 300 horsepower

230 ppmvd CO

None

Non-Emergency 301 to 500 horsepower

49 ppmvd CO
or
70% CO reduction

- Diesel Oxidation Catalyst (DOC)
- Ultra-low sulfur fuel
- Closed Crankcase Ventilation (CCV)

Non-Emergency 501+ horsepower

23 ppmvd CO
or
70% CO reduction

- Diesel Oxidation Catalyst (DOC)
- Ultra-low sulfur fuel
- Closed Crankcase Ventilation (CCV)
- Continuous Parameter Monitoring System (CPMS)

Area Source Gas - October 19 2013

Engine Category

Emission Standard

Components

4-SLB (Stroke Lean Burn)
Non-Emergency 501+ horsepower

47 ppmvd CO
or
93% CO reduction

- 3-Way Catalytic Converter
- Continuous Parameter Monitoring System (CPMS)

4-SRB (Stroke Rich Burn)
Non-Emergency 501+ horsepower

2.7 ppmvd CH2O
or
76% CH2O

- 3-Way Catalytic Converter
- Continuous Parameter Monitoring System (CPMS)

Emergency any horsepower

Not Applicable

Major Source Gas - October 19 2013

Engine Category

Emission Standard

Components

2- SLB (Stroke Lean Burn)
Non-Emergency 100 to 500 horsepower

225 ppmvd CO

- 3-Way Catalytic Converter
- Continuous Parameter Monitoring System (CPMS)

4-SLB: (Stroke Lean Burn)
Non-Emergency 100 to 500 horsepower

47 ppmvd CO

- 3-Way Catalytic Converter
- Continuous Parameter Monitoring System (CPMS)

4-SRB: (Stroke Rich Burn)
Non-Emergency 100 to 500 horsepower

10.3 ppmvd CH2O

- 3-Way Catalytic Converter
- Continuous Parameter Monitoring System (CPMS)

Area Source - <10TPY of a single HAP, <25TPY of combined HA's
Major Source - >10 TPY of a single HAP, >25 TYP of combines HAP's
Emergency engine - Run <100 hours per year, not for profit
Non-Emergency Engine - Runs or potentially runs <100 hours per year
HAP - Hazardous Air Pollutant
CH2O - Formaldehyde
CO - Carbon Monoxide
PPMVD - Parts per Million, Volumetric Dry
TPY - Tons per year


Additional Information: http://www.epa.gov/ttn/atw/icengines

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