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Investigation of Low Cost Sensor-Based Leak Detection System for Fence Line Applications
Jiao, W., E. Thoma, H. Brantley, B. Squier, Bill Mitchell, E. Escobar, M. Modrack, AND S. Amin. Investigation of Low Cost Sensor-Based Leak Detection System for Fence Line Applications. Presented at 108th Annual Conference of the Air & Waste Management Association, Raleigh, NC, June 23 - 26, 2015.
This is an extended abstract for the 2015 AWMA conference in Raleigh NC. The subject is low cost fence line sensor systems developed by EPA ORD
With recent technological advances, low-cost time-resolved sensors may become effective tools to support time-integrated passive sampling strategies by helping to decipher origin of emissions in real-time. As part of the Petroleum Refinery Risk and Technology Review, New Source Performance Standards rule, the US EPA is proposing use of two-week passive sorbent tube fence line monitoring for benzene. A prototype low-cost sensor-based, stand-alone air measurement (SAM) network, called SEnsor NeTwork INtelligent Emission Locator (SENTINEL), was developed by EPA’s Office of Research and Development and deployed near a refinery in South Philadelphia. The sensor network consists of a base station and one solar-powered remote station, measuring non-speciated air pollutant concentrations using passive photoionization detectors (PIDs), with sensors for temperature, pressure, and humidity and a 3-D sonic anemometer for wind field diagnostics. Logged at one second intervals, data from the remote station is transferred over a short range network to the base station where it can be accessed remotely via cellular modem. In addition to system design and current sensor performance characteristics, time-series analysis providing insights into source identification under different meteorological conditions will be presented. The limitations of the current design and recommendations for future improvements will also be discussed.
Record Details:Record Type: DOCUMENT (PRESENTATION/ABSTRACT)
Organization:U.S. ENVIRONMENTAL PROTECTION AGENCY
OFFICE OF RESEARCH AND DEVELOPMENT
NATIONAL RISK MANAGEMENT RESEARCH LABORATORY
AIR POLLUTION PREVENTION AND CONTROL DIVISION
EMISSIONS CHARACTERIZATION AND PREVENTION BRANCH