Module M06 · Track 2 Supply & installation
Tightness testing & purging
Proving an installation is gas-tight, finding escapes and purging safely.
Start 6.1: When to test and purgeLearning outcomes
By the end of this module, learners can:
- M06.1Identify when a tightness test and purge are required, and the scope of IGEM/UP/1B.
- M06.2Carry out a let-by test, stabilisation and tightness test in the correct sequence.
- M06.3Interpret results, including how the permissible drop for an existing installation depends on its installation volume.
- M06.4Plan and carry out a safe purge, and trace escapes.
Topics
- 6.1
When to test and purge
Situations that require a tightness test or purge, and the scope of IGEM/UP/1B.
Draft - 6.2
Preparation and let-by testing
Preparing the installation, connecting the gauge and proving the supply control valve isn't letting by.
Draft - 6.3
Stabilisation and tightness testing
Stabilising the installation and carrying out the tightness test.
Draft1 artefact - 6.4
Interpreting results and permissible drops
Deciding pass or fail, and how installation volume sets the permitted drop on existing installations.
Draft - 6.5
Tracing and repairing escapes
Finding the source of an escape and making the installation safe.
Draft - 6.6
Purging
Calculating purge volumes and purging safely.
Draft1 artefact