Vent stack

How PMC developed a lightweight portable instrument for venting gas 

The challenge 
PMC set themselves the challenge of designing a lightweight and portable venting device to be used across the transmission and distribution network. 

Designed as a safety and environmental initiative, the objective was to standardise high pressure venting procedures across the business. 

The solution 
The design had to be robust enough to take field use and be pressure rated, but light enough that it can be lifted manually. As part of the design process, PMC had to use maximum pressures, flows and volume of gas to calculate the weight needed on each foot to keep the vent still in all conditions. 

Whilst the vent stack is lightweight and collapsible it is tested for pressure of up to 141 Bar. 

There have been a total of 155 vent stacks made so far and these have been used across all networks.