Industrial plant valves play a critical role in environmental impact. Valves can emit two main types of emissions. The first one, and most important, is fugitive emission to the atmosphere caused by the aging and wear of valve components and also bad Maintenance management.
Leakage from valve gland is by far the most common emission. They account for more than 99% of overall valve emission. Leakage by flanged joints is also possible, although less likely.
VALVE INFLUENCE ON PLANT FUGITIVE EMISSIONS
In the nineties, the EPA estimated that a typical (refinery) or chemical plant can emit 600 to 700 tons per year of VOCs from leaking equipment, such as valves, connectors, pumps, sampling connections, compressors, pressure-relief devices, and open-ended lines. Furthermore, the EPA studies have estimated that valves and connectors account for more than 90% of fugitive emissions from leaking with valves being the most significant source.
The documented study demonstrates the importance of paying greater attention to the management of emissions from industrial valves and offers specific solutions.
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