Controlling Fugitive Emissions - Documents | Metso

1 Jamesbury Products for Controlling Fugitive EmissionsMetso North America2 JAMESBURY VALVE SOLUTIONSAi rMediaSampled AreaLeak ing MediaTo VOC EmissionanalyzerJamesburyVALVE SOLUTIONSF ugitive EmissionsFugitive Emissions of Volatile OrganicCompunds (VOCs) from industrial processesare tightly governmentally controlled andcontinue to be leading news stories whenissues arise. From a process, financial, safety,environmental, and public relationsstandpoint, it is clear that Controlling andminimizing Fugitive Emissions continues tobe a corporate North America,the United States Environmental Protection Agency (US EPA) isthe government agency tasked withemission regulation.

2 The US EPA works inconjunction with industry to establishallowable emission rates and facilities are granted levels ofallowable Emissions . The emission levelsmust be adhered to or there is the risk ofgovernment fines or shutdowns. In additionto the expected Fugitive Emissions from amanufacturing process, there are additionalsources of Fugitive Emissions whichcontribute to the overall facility emissionlevel. One of the primary contributors tospurious Fugitive Emissions are quarter turnand rising stem valves . While quarter turnvalves are vastly superior in emissionperformance to rising stem valves , the stempackings on valves are susceptible to leakingand contributing to the overall amount ofplant Fugitive Valve Fugitive Emission SchematicNot every quarter turn valve stem sealdesign is equal.

3 Jamesbury s engineeredball valve and Wafer-Sphere stem sealdesigns have proven superior emissionperformance over long cycle lives andtemperature excursions. In addition toyears of installed success, Jamesburyhasqualified designs to EPA Method 21, ISO15848 Class B, and TA Luft ProceduresThe US EPA has defined test methods tomeasure the concentration level of leakingmedia from processes. These values are nota direct measurement of the actual massemissions rate. The data is used in a massemissions/screeening value correlationequation to estimate mass Emissions .

4 US EPA Approved Portable VOC analyzersare used to detect the ppm leak rates. TheUS EPA has even defined specific testlocations for VALVE SOLUTIONSP latform ball valveFlange valveWafer-SphereJamesburyStem Seal Designs Limit EmissionsMain Flare Allowable VOCE missionsRecently, a US refinery was reviewed by localand federal officials for VOC VOC emission rates were set forMain Flare processes to burn off gas fromthe processes. The following values wereset: Percent of Allowable Emission Total Consumed by Leaking Valve StemsValve Stem Leakage atVOC50 ppm100 ppm500 ppm1000 VOC Emissions RatesVOCRate (lb/hr) process could have 60 valves associatedwith it.

5 The Fugitive Emissions from the valvestem packing can add up to a significantportion of the allowable emission , Jamesburyvalves are capable ofperforming at 100 ppm of valve stempacking leakage or less. Competitive testinghas shown this is industry leaking at greater rates canconsume a significant portion of theallowable emission the right valve has an impact onyour process, safety, and the right valve selection can also directlyimpact your bottom line Test Locations for ball valve (top) andbutterfly valve (bottom).Emission TestLocationEmissionTestLocationP568, Issue 12/2011.

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