Emissions checks are tests to determine the emissions produced through combustion, including those from vehicles and industrial plants. A sniffer device is used to measure the gases and particulates present in emissions, and emissions standards are in place to reduce pollution. If emissions are too high, corrective action must be taken. Disputes or retests may be requested, but until new results are obtained, the original results will stand.
An emissions check is a test that is performed to determine the nature of the emissions produced through the combustion process. People most commonly think of emissions controls in the context of testing motor vehicles to determine whether or not they meet government-set emissions standards. However, emission checks can also be performed on exhaust gases produced in industrial plants, with the goal of monitoring plant efficiency and determining whether or not the plant meets government standards.
During an emissions check, a device known as a sniffer is connected to an emissions outlet such as the tailpipe of a car. The device provides information on which gases and particulates are present in the emissions produced and in which concentrations. The device can inform the technician whether the emissions to be monitored have passed or failed emissions standards, or the technician may need to consult a table of government and industry standards to put the emissions information into context.
For vehicles, an emissions inspection is often required before the vehicle can be successfully registered with the Department of Motor Vehicles. If the emissions are found to be too high, the problem causing the high emissions will need to be corrected so the vehicle can be retested. Emissions standards for vehicles are designed to reduce the amount of harmful emissions caused by vehicles on the road, to improve air quality standards, and to reduce the damage to the natural environment caused by vehicle emissions.
Even the emission standards for factories are designed to reduce pollution. In regions where factories are enrolled in cap and trade schemes to reduce greenhouse gas emissions, emissions testing is used to determine where the factory falls within the framework of the system and to see whether or not it is violating emissions standards. If a company exceeds the amount of emissions it allows, it will have to buy or trade emissions credits with another company. Companies with emissions controls that indicate they are emitting less than the legal limit will receive trade or sale credits.
If people feel the results of an emissions check are incorrect, they may be able to dispute the results or request a retest. Performing emission checks correctly can be a bit tricky, and using the wrong or improperly maintained equipment can skew the results. However, until new new test results prove otherwise, the test results will be considered a failure of the emissions standard.
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