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Table 4-37: Tier 2 Federal Exhaust Emissions Standards for Newly Manufactured
Commercial Marine Compression-Ignition Enginesa,b
Excel | CSV
1 |
< 0.9 |
37 kW and above |
2005 |
7.5 |
0.40 |
5.0 |
10 yrs or 10,000 hrs operation |
5 yrs or 5,000 hrs operation |
1 |
0.9 to < 1.2 |
37 kW and above |
2004 |
7.2 |
0.30 |
5.0 |
10 yrs or 10,000 hrs operation |
5 yrs or 5,000 hrs operation |
1 |
1.2 to < 2.5 |
37 kW and above |
2004 |
7.2 |
0.20 |
5.0 |
10 yrs or 10,000 hrs operation |
5 yrs or 5,000 hrs operation |
1 |
2.5 to < 5.0 |
37 kW and above |
2007 |
7.2 |
0.20 |
5.0 |
10 yrs or 10,000 hrs operation |
5 yrs or 5,000 hrs operation |
2 |
5.0 to < 15.0 |
37 kW and above |
2007 |
7.8 |
0.27 |
5.0 |
10 yrs or 20,000 hrs operation |
5 yrs or 10,000 hrs operation |
2 |
15.0 to < 20.0 |
37 kW to < 3,300 kW |
2007 |
8.7 |
0.50 |
5.0 |
10 yrs or 20,000 hrs operation |
5 yrs or 10,000 hrs operation |
2 |
15.0 to < 20.0 |
3,300 kW and above |
2007 |
9.8 |
0.50 |
5.0 |
10 yrs or 20,000 hrs operation |
5 yrs or 10,000 hrs operation |
2 |
20.0 to < 25.0 |
37 kW and above |
2007 |
9.8 |
0.50 |
5.0 |
10 yrs or 20,000 hrs operation |
5 yrs or 10,000 hrs operation |
2 |
25.0 to < 30.0 |
37 kW and above |
2007 |
11.0 |
0.50 |
5.0 |
10 yrs or 20,000 hrs operation |
5 yrs or 10,000 hrs operation |
3 |
30 and above |
37 kW and above |
No Tier 2 emissions standards have been set for Category 3 commercial
marine vessels. |
No Tier 2 emissions standards have been set for Category 3 commercial
marine vessels. |
No Tier 2 emissions standards have been set for Category 3 commercial
marine vessels. |
No Tier 2 emissions standards have been set for Category 3 commercial
marine vessels. |
No Tier 2 emissions standards have been set for Category 3 commercial
marine vessels. |
No Tier 2 emissions standards have been set for Category 3 commercial
marine vessels. |
KEY: CO=carbon monoxide; disp=displacement; g/kW-hr=gram per kilowatt-hour;
hrs=hours;kW=kilowatt; NOx=nitrogen oxides; PM=particulate matter; THC=total
hydrocarbons; yrs=years.
a Tier 2 emissions standards established by Congress apply to commercial
compression-ignition (diesel) engines with a power rating of at least 37 kW.
Both propulsion and auxiliary engines are covered under these standards, but
land-based engines used in portable auxiliary equipment must meet standards
for land-based engines. Smaller compression-ignition engines are covered under
a separate rule. The U.S. Environmental Protection Agency (EPA) also intends
to regulate recreational marine diesel engine emissions under a separate rule
and is establishing provisions to allow exemptions for category 1 and 2 engines
used as auxiliary engines in U.S.-flagged vessels engaged in foreign trade or
overseas operations at least 75 percent of the time (i.e., operation will occur
more than 320 nautical kilometers outside the United States, not including trips
between U.S. ports in Alaska, Hawaii, the continental United States, or its
territories).
b MARPOL Annex VI nitrogen oxide (NOx) standards (international
standards adopted by the International Maritime Convention on the Prevention
of Pollution from Ships) are referred to as Tier 1 emissions standards. These
standards apply to any diesel engine over 130 kW installed on a vessel constructed
on or after Jan. 1, 2000 and to any engine that undergoes major conversion after
that date. MARPOL standards are currently voluntary for ships engaged in domestic
travel but will be required for ships engaged in foreign trade with countries
that ratify MARPOL standards. Although they have not yet been ratified by the
United States, the EPA encourages engine manufacturers to make compliant engines
and encourages owners to purchase them. If ratified by the United States, MARPOL
Annex VI NOx standards will be retroactively effective Jan. 1, 2000.
c Emissions standards are based on displacement/cylinder and rated
power. The three standards categories are as follows:
Category 1 (< 5 liters displacement/cylinder and rated power >=37 kW):
These engines are typically used as propulsion engines on relatively small commercial
vessels (fishing vessels, tugboats, crewboats, etc.). They are also used as
auxiliary engines on vessels of all sizes and applications.
Category 2 (>= 5 liters displacement/cylinder to < 30 liters displacement/cylinder
and rated power >=37 kW): The largest engines that are widely used as propulsion
engines in harbor and coastal vessels in U.S. waters. These engines also provide
auxiliary power on very large vessels. Many of these engines are of similar
size and configuration as locomotive engines or use comparable emissions control
technologies.
Category 3 (>= 30 liters displacement/cylinder and rated power .=37kW):
These are very large high-power engines that are used almost exclusively for
propulsion on vessels engaged in international trade.
d Manufacturers must demonstrate that the engine or engine family
will meet all standards for its useful life. Certification for useful life is
accomplished by testing a sample of engines. The warranty period applies to
each engine manufactured. The manufacturer of each engine must provide a warranty
to the ultimate purchaser or owner (and each subsequent purchaser or owner)
that the engine is designed, built, and equipped so as to conform at the time
of sale with Tier 2 standards and is free from defects in materials and workmanship
that would cause the engine to fail to conform to these standards for the warranty
period. Furthermore, this warranty cannot be shorter than any mechanical warranty
on the engine and must be at least one half of the useful life period.
SOURCE:
Federal Register, Vol. 64, No. 249, Dec. 29, 1999, pp 73,299 to 73,373,
and U.S. Environmental Protection Agency, Office of Air and Radiation, personal
communication, Aug. 28, 2001.
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