Spot Sample Witness Simulator

Spot Sample Witness Simulator gives trainees a chance to practise and demonstrate the Purge, Fill and Empty Method for collecting gas pipeline samples.

Learn the equipment

In the Welcome Scene, you learn about the equipment used to collect an adequate and reliable gas sample, including a double-valve cylinder and an extension tube, often called a pigtail. On-screen written procedures guide you through setting up the collection system and following the proper sequence for collecting a sample.

Practise sample collection

After practising, select Next from the menu to enter a rural pipeline scene and demonstrate Spot Sample Witnessing with the Purge, Fill & Empty Method. First, check and verify the pipeline system pressure. A duplicate scene features a different pipeline pressure, which calls for a different number of purges to collect the sample properly.