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.
SOURCES:
Federal Register, Vol. 64, No. 249, Dec. 29, 1999, pp 73,299 to 73,373
U.S. Environmental Protection Agency, Office of Air and Radiation, personal
communication, Aug. 28, 2001.
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