COMMENTS 5
Stage V - what impact will it have on your generator sets?
Aidan Turnbull Editor
ince the introduction of emission standards in 1996 a great deal been achieved. For example, a modern engine is 95% cleaner compared with an engine from the period of the first emission limits. Stage V is mainly used to reduce particulate number and the
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amount of soot is now regulated by weight. For Stage IV this is fixed at 0.025 grams. The result is that manufacturers primarily filter out the large particles while some small particles may still be emitted. In Stage V also the amount of soot particles is now regulated. This forces manufacturers to focus on small particles. To comply with Stage V manufacturers are expected to combine the SCR system and a particulate filter. At present, a so-called open soot filter is mostly used. That will soon be a closed particulate filter. So it is not necessary to switch to, for example, an electric drive. Will there be a Stage VI emission standard in the future? This
may happen but it's expected to apply only a small category in the highest performance class. For Stage V no interim standard will be introduced, as
between Stage III and IV was the case. We go in one step from IV to V. It is likely the European Commission will reconsider at a later point in time if the Stage V requirements are sufficient and whether a Stage VI is required at all. On pages 35 & 35 of this edition of WIP Paul Moore,
Managing Director at Dieselec Thistle Generators and Jonny Rodgers, Director and Consultant at NOxProtekt, consider the important ramifications of Stage V compliance. In their feature they make it clear that for operators, if your generating equipment is within the scope of the Directive, then
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you are obliged to apply for a permit, monitor emissions outputs as per the advised schedule, keep a log of running hours and log evidence of fuel types used. If abatement is required to achieve levels, you must be able to demonstrate that this was in continuous operation, maintain a deviation log, and keep records for six years. Fortunately, this process is to be tailored to be ‘user-friendly’ and comes with accompanying guidance to enable owners & operators to submit the registration and permitting via an online register.
The guidance for the revised Environmental Permitting
Regulations and compliance with the MCPD is currently under consultation and will be published in the summer of 2018.
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