Network analysis and design of natural gas distribution in Narshingdi

Abstract

A lot of effort has been directed for gm; network design in this country. Among the existing pipdincs, the proposed gas network will be considered as part of the national system. However, the design procedures in complexity of new applications arc growing. One of the objectives of this proje<::twork is to fmd out the techniques of improving gas flow through the network to the customer. Especially the causes of system loss, weaknesses of controlling system, maintenance system and the customer suffiring will also be addressed. Regarding the redesign of gas network in Narsingdi district, a new idea minimi~ing the faults of the existing pipeline is implemented. In this project work, a financial profile has been built for finding net present value (NPV), benefit cost ratio (BCR) and internal rate of return (lRR) on the basis of 20 )'ear project life. The design re.~ults arc compared benveen existing pipe lines and proposed pipe lines. SCADA (supervisory control and data acquisition), to reduce system loss by modt,'TO technology supported controlling instrument, was used and is the heart of the gathering opL'Oltion. Environmental impact have been considered in the proposed gas network. The result ofEIA, negative effect on total environment is very negligible but the positive effect ofEiA for the proposed ga~ network is beneficial. The proposed gas network that includes new a~pocts of designing may be fruitful for new network designing pwpose in our ga~ distribution sector.