[Code of Federal Regulations]
[Title 40, Volume 18]
[Revised as of July 1, 2003]
From the U.S. Government Printing Office via GPO Access
[CITE: 40CFR94.7]

[Page 593-594]
 
                   TITLE 40--PROTECTION OF ENVIRONMENT
 
         CHAPTER I--ENVIRONMENTAL PROTECTION AGENCY (CONTINUED)
 
PART 94--CONTROL OF EMISSIONS FROM MARINE COMPRESSION-IGNITION ENGINES--
Table of Contents
 
 Subpart A--General Provisions for Emission Regulations for Compression-
                         Ignition Marine Engines
 
Sec. 94.7  General standards and requirements.

    (a) Marine engines and vessels may not be equipped with a defeat 
device.
    (b) An engine may not be equipped with an emission control system 
for the purpose of complying with emission standards if such a system 
will cause or contribute to an unreasonable risk to public health, 
welfare, or safety in its operation or function.
    (c) You may not design your engines with emission-control devices, 
systems, or elements of design that cause or contribute to an 
unreasonable risk to public health, welfare, or safety while operating. 
For example, this would apply if the engine emits a noxious or toxic 
substance it would otherwise not emit that contributes to such an 
unreasonable risk.
    (d) Manufacturers shall ensure that all engines subject to the 
emission standards of this part are equipped with a connection in the 
engine exhaust system that is located downstream of the engine and 
before any point at which the exhaust contacts water (or any other 
cooling/scrubbing medium) for the temporary attachment of gaseous and/or 
particulate emission sampling equipment. Use good engineering judgment 
to locate the connection. This connection shall be internally threaded 
with standard pipe threads of a size not larger than one-half inch, and 
shall be closed by a pipe-plug when not in use. Equivalent connections 
are allowed. Engine manufacturers may comply with this requirement by 
providing vessel manufacturers with clear instructions explaining how to 
meet this requirement, and noting in the instructions that failure to 
comply may subject the vessel manufacturer to federal penalties. Vessel 
manufacturers are required to comply with the engine manufacturer's 
instructions.
    (e) Electronically controlled engines subject to the emission 
standards of this part shall broadcast on engine's

[[Page 594]]

controller area networks engine torque (as percent of maximum torque at 
that speed) and engine speed.

[64 FR 73331, Dec. 29, 1999, as amended at 67 FR 68341, Nov. 8, 2002; 68 
FR 9782, Feb. 28, 2003]