5.4.1 The emission of gaseous components by the
engine submitted for testing shall be measured by the methods described
in appendix 3 of this Code which describe
the recommended analytical systems for the gaseous emissions.
5.4.2 Other systems or analysers may, subject to the
approval of the Administration, be accepted if they yield equivalent results to that of
the equipment referenced in 5.4.1. In establishing equivalency it shall be demonstrated
that the proposed alternative systems or analysers would, as qualified by using
recognized national or international standards, yield equivalent results when used to
measure marine diesel engine exhaust emission concentrations in terms of the
requirements referenced in 5.4.1.
5.4.3 For introduction of a new system the determination
of equivalency shall be based upon the calculation of repeatability
and reproducibility, as described in ISO 5725-1 and ISO 5725-2, or
any other comparable recognized standard.
5.4.4 This Code does not contain details of flow,
pressure, and temperature measuring equipment. Instead, only the accuracy
requirements of such equipment necessary for conducting an emissions
test are given in 1.3.1 of appendix 4 of
this Code.
5.4.5
Dynamometer specification
5.4.5.1 An engine dynamometer with adequate characteristics
to perform the appropriate test cycle described in 3.2 shall be
used.
5.4.5.2 The instrumentation for torque and speed
measurement shall allow the measurement accuracy of the shaft power within the given
limits. Additional calculations may be necessary.
5.4.5.3 The accuracy of the measuring equipment shall be
such that the maximum permissible deviations given in 1.3.1 of appendix 4 of
this Code are not exceeded.