United States Air and Radiation EPA420-F-99-044
Environmental Protection December 1999
Agency
Office of Mobile Sources
vvEPA Technical
Highlights
Responsibilities for Marine Vessel
Operators with EPA-Certified Diesel
Engines
The U.S. Environmental Protection Agency's (EPA's) final rule for
commercial marine diesel engines rated over 37 kilowatts (kW) sets
emission standards that apply to new engines used in the United States.
These standards take effect for new engines manufactured starting in
2004, 2005, or 2007 depending on the size of the engine. This fact sheet
informs marine vessel operators of their responsibilities under the final
rule.
Which engines are affected by the new emission
standards?
In general, emission standards and related requirements start for new
commercial marine diesel engines manufactured in 2004 or later for
engines with displacement less than 2.5 liters per cylinder. This corre-
sponds to a power rating of about 600 kW for a 12-cylinder engine.
Standards begin to apply for bigger engines that are manufactured in
2007 or later. In some limited cases, the standards also apply to remanu-
factured or other used engines. We allow certain exemptions and
flexibilities for a wide variety of situations. See the "Scope of Applica-
tion" fact sheet (EPA420-F-99-047) for more information about when
standards apply for individual engines. We plan to set emission stan-
dards for recreational marine diesel engines in the near future.
> Printed on Recycled Paper
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The emission limits of MARPOL Annex VI apply to engines before the
EPA standards start. Also, EPA standards do not apply to engines with
displacement over 30 liters per cylinder, so the MARPOL Annex VI
limits continue to apply to these engines after the EPA standards start.
See the fact sheet on MARPOL Annex VI (EPA420-F-99-038) for more
information.
do I to
Every certified engine needs a label showing that it meets the require-
ments that apply to it. The label includes several things, including the
model year and useful life of the engine and its tune-up specifications
and adjustments. The label may also show that the engine is certified
only for certain applications or for a certain fuel.
apply to
Engines with a label must be rebuilt to their original configuration. See
the fact sheet on rebuilding diesel engines (EPA420-F-99-045) for
additional information.
is
If you disable the engine's emission control system or make other
changes to the engine that increase its emissions, you could be guilty of
tampering with a certified engine. You can make changes to the engine
without violating the requirements if you have a reasonable basis to
believe that you are not increasing the engine's emissions. This should
generally include emission test data showing emissions levels before and
after the change.
do the
The engine manufacturer must provide a warranty for emission-related
components for the period specified on the engine label. If they provide
you with a longer warranty (either written or negotiated) for components
unrelated to emission controls, that longer warranty period also applies
to all your emission-related components. Emission-related components
generally include anything the manufacturer has added to the engine to
meet emission standards.
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Do the I my
engines?
The manufacturer may not require you to use specific parts or repair
facilities, but it is still your responsibility to maintain your own engines.
The manufacturer will have maintenance instructions showing what is
needed to ensure that the engine and its emission control systems will
work properly. If you don't do these things, high emission rates could
occur and the manufacturer's warranty may no longer be valid.
I
Companies may certify their parts to show that the engine will still meet
our requirements, but we don't require it. If you select or install parts that
disable or seriously compromise the engine's emission control system,
this may be an engine tampering violation. This could result either from
low-quality parts or from parts that are designed to optimize engine
performance at the expense of emission control.
For
See 40 CFR 94 for additional details. For more information on commer-
cial marine diesel engines, visit the Office of Mobile Sources' web site
at:
http://www.epa.gov/oms/marine.htm
You can also contact Bob Montgomery at:
U.S. Environmental Protection Agency
Office of Mobile Sources (6403 J)
401 M Street SW
Washington, DC 20460
(202) 564-9287
e-mail: montgomery.robert@epa.gov
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