• Proceedings of the Korean Society of Marine Engineers Conference
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• 2011.10a
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• pp.114-116
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• 2011

By 33 CFR 154.828 regulation, a liquid seal must be installed on the inlet to vapor destruction unit in vapor control system. However, install and maintenance of liquid seal are subject to many problems in ship environment. Therefore, US Coastguard, which is the governing body of the regulation, have prepared another clause in the regulation for the exemption from previous clauses. In this paper, relevent regulation is reviewed, together with the requirements for exemption from liquid seal installation. A previous example case is also studied to propose how safety assessment for the alternative safety devices replacing liquid seal should be performed.

• Proceedings of the Korean Society of Marine Engineers Conference
• /
• 2011.10a
• /
• pp.117-117
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• 2011

• Proceedings of the Korean Society of Marine Engineers Conference
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• 2011.10a
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• pp.111-111
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• 2011

• Journal of Korean Society of Environmental Engineers
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• v.38 no.8
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• pp.435-443
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• 2016

In this study, MACT (Maximum Achievable Control Technology) application effect was evaluated for minimization of benzene fugitive emission in petrochemical industry. Although fugitive emission for benzene in the nation was regulated by the Clean Air Conservation Act from 2015, the US EPA already has introduced MACT standard to minimize its emission with up-to-date technology since 1995. EPA Emission Factor (AP-42) and EPA MACT Standard Guideline were used to assess MACT application effect. As a result, For MACT application it could reduce benzene emission up to 98% (average) comparing with uncontrolled facility, while the national regulation could achieve about 95% (average) reduction which is slightly lower than MACT. However there is no control measure in the national regulation to reduce benzene emission for vessel loading even though MACT standard requires preventive facility such as VRU (Vapor Recovery Unit). For further reduction of benzene emission, it needs to be mandatory for operation of VRU when benzene product is loaded in vessel. These efforts could contribute to achieve the global level for benzene emission management in national petrochemical industry.