Portable emission measurement systems

The type approval of the engine rather than the complete vehicle introduces difficulties for current and future heavy-duty vehicles, as they are equipped with advanced after-treatment systems. In such cases the complete engine, after-treatment system and electronic control system have to be set-up in the laboratory for type approval to take place. To avoid this complication, type approval of the complete vehicle at the Euro VI level can be performed on the road using portable emission measurement systems (PEMS). Regulation 582/2011 specifies the technical details of the measurement. 

Use of portable emissions measurement systems (PEMS) for validation and development of passenger car emission factors. 18th International Symposium Transport and Air Pollution. May 18-19, 2010, Duebendorf, Switzerland... 

Weiss M, Bonnel P, Kiihlwein J, Provenza A, Lambrecht U, Alessandrini S, Carriero M, Colombo R, Fomi F, Lanappe G, Le Lijour P, Manfredi U, Montigny F, Sculati M (2012) Will Euro 6 reduce the NOX emissions of new diesel cars - Insights from on-road tests with Portable Emissions Measurement Systems (PEMS). Atmos Environ. doi 10.1016/j. atmosenv.2012.08.056... 

Atmospheric vapor, gas, or liquid releases or spills within a process facility occur every day. They are a major cause of catastrophic incidents. In order to provide an inherently safer facility the common release of vapors or gases to the atmosphere or liquids should be prevented or eliminated wherever practical. Not only does this improve the safety of a facility, it also decreases the amount of fugitive emissions or liquids that occur therefore decreasing any potential harm to the environment. Containment of waste gases, vapors, and liquids, human surveillance, increased testing, inspection and maintenance, gas detection (fixed systems and portable devices), and adequate vapor dispersion features are all measures to lessen the probability of an incident occurring. 

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