A new 10” line was being installed and commissioned with a need for a four pig train to be detected during launch and receipt, the first pig was being launched a number of months prior to the last three pigs.
Method & Objectives
- Confirm first pig launched using acoustic and magnetic technology.
- Ensure second and subsequent pigs could be re-located an indeterminate time later
- Gauge pipeline and allow signalling of a pass / fail condition from outside the receiver