This one-day course covers VOC emission calculation methods based on the algorithms specified in AP-42 Chapter 7 and API Technical Report 2568, November 2007 and some local agency guidance. Mr. Rob Ferry, who has been involved in the development of the emission factors in AP-42 Chapter 7 for more than 37 years, will work with his Trinity colleagues to instruct the course.
The course provides a detailed look into air emissions from storage tanks and provides insight on best practices for emissions calculations. The equations for estimating routine standing and working losses will be covered for ambient tanks as well as for tanks that are heated and/or insulated. Detailed discussion will also address the estimation of emissions from MSS events (i.e., floating roof landings and tank cleanings). Additional topics include estimation of flashing losses from production field tanks, calculation of maximum short-term (lb/hr) emission rates, determination of effective throughput from liquid level data, and determination of heating cycles. Finally, the course provides recommendations on how to improve tank data quality and the accuracy of emissions estimates, thereby mitigating the potential for regulatory pitfalls.
The course also reviews the proposed changes to AP-42 Chapter 7 that were posted by EPA on July 25, 2018, and the expected impact of these changes on estimated emissions.