BASICS OF HIGH-PRESSURE MEASURING AND REGULATING STATION DESIGN Class No.1010

摘要

This paper presents a review of the criteria necessary for designing high-pressure natural gas measuring and regulating stations.For the purpose of this discussion,high pressure is assumed to be gauge pressure values above typical distribution mainline pressures(greater than 60 psig).Therefore,it is most applicable to station designs with gathering,midstream,and transmission operations.The design engineer has many factors to consider when designing a metering facility.These factors must include considerations for their impact on measurement accuracy,facility capital cost,environmental stewardship,public stewardship,and long-term maintenance cost.The successful designer will seek to achieve high accuracy at an appropriate capital cost,while minimizing the risks of environmental hazards,public nuisance,such as noise,and maintenance requirements.Regardless of the haste with which a meter station is constructed,it is most commonly in operation for many years.It is not unusual for a facility to be in place for more than 30 years.Considering this,each facility must meet the purpose for which it is intended,regardless of whether gas flow rates might increase or decrease over time.It is,therefore,prudent for a designer to consider the potential for facility expansion or flow rate reduction and how that might affect the facility design.Later modifications are likely to be costlier than the initial construction.