.... The values applied to the foregoing parameters are specified for each specific model. reservoir simulation emr southwest gas corporation pressure system information fluid modeling node diameter customer load subsystem error internal diameter source node electronic mapping equation...

...: for the low pressure systems the grade X70 steel (API 5L Spec.) has been selected. For the high pressure systems, a higher strength steel (X80) has been preferred to the X70, to limit the required wall thickness at a maximum value of 1.3 inch (33 mm), that is the maximum wall thickness of pipes supplied...

... INTRODUCTION The "N.V. Nederlandse Gasunie" is a company which buys, sells and transports natural gas. The company operates a gas transmission network of over 6000 miles length. The network is divided in two distinct parts: a high pressure transmission system and a low pressure system which...