The IGEM/UP/1B Toolkit — Installation Volume, Purge Volume & Tightness Testing
The IGEM/UP/1B Toolkit — Installation Volume, Purge Volume & Tightness Testing
A guided calculator and tightness testing tool for domestic gas engineers, built to IGEM/UP/1B Edition 4.
What it does:
You have a choice of 5 options on the main screen.
1. This helps you calculate Installation Volume (IV) and purge volume (PV) of a system. Thats it.
2. This helps you calculate the IV then walks you through a full let-by, stabilisation and tightness test, with built-in timers, of a NEW installation.
3. This helps you calculate the IV then walks you through a full let-by, stabilisation and tightness test, with built-in timers, of an EXISTING installation, then checks against the correct Maximum Permissible Pressure Drop (MPPD) for the job.
4. Carry out a quick tightness. Let-by, Stabilisation, Test. Ensures you are using correct pressures and durations.
5. If you have already carried out a tightness test, this will help you calculate the IV, then check it against the MPPD
It covers both Natural Gas and LPG, new and existing installations
Generates a complete, professional job record — company and engineer details, test results, and photos — ready to save or print as a PDF on site. You can also share the basic info by sending to WhatsApp.
If you're in a dark spot, you can toggle between light and dark mode using the button at the top right of the screen.
How it works:
Opens straight in your phone's browser — no app store, nothing to install
Needs an internet connection once, to activate your license — after that, it works completely offline, even with no signal on site
Add it to your home screen for one-tap access, just like a normal app
This tool covers domestic Natural Gas and LPG tightness testing using fuel gas as the test medium. Testing with air, and medium pressure installations, have been left out to keep the tool simple and focused. If you'd like either of these added, get in touch through this page and we'll look at building it in.