Tools

Installation and purge volume

Step 1 of 4

Choose the meter

From Table 7 of IGEM/UP/1B.

About this tool

Draft: not yet checked

Pick the meter, tap in the length of each pipe size as you walk the property, and get the installation volume (IV) and the purge volume (PV), and whether IGEM/UP/1B applies.

A training and checking aid

This tool doesn't replace the current standards, the manufacturer's instructions or your own competence. Always check the result against them before you rely on it.

Sources

  • IGEM/UP/1B, Tightness testing and direct purging of small installations, Edition 4, Communication 1903 (Appendix 7 (A7.1, A7.3, Tables 7 and 8), 6.2.2, 6.3.2(e), 2.2 and 1.3). The volume of each meter and of 1 m of each pipe size and material, the method (meter plus pipe plus fittings), the 10% allowance for fittings that can't be calculated, the purge volume (1.5 times the IV), the 0.02 m³ point where natural gas must be ignited at a burner and the 0.035 m³ limit of the standard's scope. The standard's four worked examples, and the examples in clause 2.2 Note 6, are used to test the tool.

Learn how it works: Lesson 6.6: Purging (working out the volume)

Add it to your home screen

On an iPhone or iPad, tap Share, then Add to Home Screen. On Android, open the browser menu and choose Install app or Add to Home screen. It then opens like an app.

This tool works out the installation volume and, on request, the purge volume and how to purge natural gas. It does not include the test criteria (the permitted pressure drop).

Purge volume

The working