Measuring and estimating of fugitive emissions in normal operations (Case study Fars Gas Company)

Abstract

The purpose of this article is to determine the fugitive emissions in normal operations of Methane from the natural gas distribution networks in Fars Province. The methods which are used for calculating or measuring the emission coefficient are: Measuring the flow of fugitive emission gas form instruments using the Hi-Flow Sampler device, Using PHAST software in order to calculate fugitive emission gas from some of the instruments, Engineering calculations based on instruments specifications and operational conditions. With the results that came up in this project, the amount of greenhouses gasses (methane and carbon-di-oxide) that leaked from Fars Province distribution networks is equaled to 0.542 percent of incoming gas into this province. The biggest emission amount is 64.17% which is belonging to users’ instruments and also the biggest emission amount is 99% which is belonging to normal operational conditions. Fugitive emission with the amount of 90% is the most usual kind of emission. Finally, different ways of reducing the emission will be introduced.

Keywords

• Fugitive emissions
• Normal operations
• Leakage
• Emission factor
• Activity coefficient