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Updated on January 24, 2013

Gasworks Software Introduction

Gasworks is a program designed for the gas industry.

It allows the user to create sophisticated gas pipeline designs, and measure the flow, velocity, and the sizes of the pipes that will be required to allow the gas to flow through safely. In Gas infrastructure designs there is a maximum pressure drop that parts of the gas infrastructure can legally drop to. This allows a constant pressure to be maintained within the infrastructure.


There is two types of gas infrastructure parts, and they are called mains, and services. Mains, are the spines, that will run down roads, or cross large amounts of land. Services are smaller pipes that branch off from the mains. The mains carry all the gas to everybody who has services connected to the supply.

There are many companies licensed to lay gas infrastructure pipes, but they must be maintained for their life expectancy, and the job of this will fall to a company who is the adopting network. This is mostly, the actual main network owner of large amounts of gas infrasture in the area already.

If you have a map of a city or street that you want to examine what gas pipeline infrastructre will be needed then you can import your image into gasworks using a .dxf import feature. Once you map is on your gasworks screen you can now set the correct scale of the image. This will mean that when you draw your pipelines along the streets it will be the correct size and length.

Gasworks is like a simple auto cad program, and it really only has options that you will mostly use. It doesn't have a whole lot of options that you will never use, so once you are familiar with the gasworks interface, you can easily understand the program.

First of all you will need to find our what gas infrasture you are actually connecting to. This is measure in a diameter measurement, anywhere from 63mm to 315mm. You also need to select which size of fitting you will need for the connection to the parent main, that your new main will be connecting to. You Will have to start to draw your mains segments, and draw them down your street, and then draw in your services for any houses or shops.

Gasworks will automatically connect your service to your mains section, and calculate your flow through them.

Once you have created your gasworks design, you can now solve the model, which means that gasworks uses a set of mathematical formulas to calculate what speeds the gas will flow at, where your pressure drops are, and what size of pipes you will need to safely push the gas through. A list of these formulas are:

  • AGA 3 Orifice Metering Of Natural Gas And Other Hydrocarbon Fluids
  • AGA8 Compressibility Factors of Natural Gas and Other Hydrocarbon Gases
  • AGA GPTC Guide For Gas Transmission and Distribution Piping Systems
  • AGA NX19 Manual For Determination of Supercompressibility Factors For Natural Gas
  • API 520 Sizing Selection and Installation of
    Pressure-Relieving Devices in Refineries
  • API 1102 Steel Pipelines Crossing Railroads and Highways
  • ASME B31.8 Gas Transmission And Distribution Piping Systems
  • GPA 2172 Calculation of Gross Heating Value (etc) for Natural Gas Mixtures from Compositional Analysis
  • GE/TD/3 Recommendations On Transmission And Distribution Practice
  • ICC International Mechanical Code
  • ISA S75.01 Flow Equations for Sizing Control Valves
  • ISO 5167 Measurement of fluid flows by means of pressure differential devices

Once your design has been complete you can now instruct your on site work force to order the part required, and when the pipe is connected up, your drawing will be submitted to the network owners to provide a plan for reference so that any future infrastructure work can be carried out safely with an accurate picture of where the existing infrastructure is in your area.

If you have ever wondered why a gas supply takes so long to arrange this is the reason, there is lots of back end administration and design work required before even as single dig can start. If you want a gas supply, order one with a 6 month timescale to guarantee you receive it in a timely manor. If you need a gas supply within 30 days, expect to not achieve this, this is alot of legal paperwork that has to be tied up and that alone will take 30 days.


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