High Volume Gas Escape Toolkit
High Volume Gas Escapes (HVGE), although uncommon, pose a risk to individuals and infrastructure in their vicinity. HVGEs are often caused by third party damage, but it is the GDN’s responsibility to remedy the situation safely and quickly.
![HVGET splash](https://steer.filecdn.uk/media/headers/_1000xAUTO_crop_center-center_none/HVGET_splash.png?v=1718294082%2C0.5%2C0.5)
In effect, there are three issues that need responding to:
• Removing risk of explosion etc. to public and contractors.
• Mitigating the consequences of the loss of gas.
• Ensuring continuation of supply to customer.
![DSCF0989](https://steer.filecdn.uk/media/_1000xAUTO_crop_center-center_none/DSCF0989.png?v=1718294084%2C0.7104%2C0.3361)
Developing the solution
SGN commissioned Steer to develop appropriate tools for addressing these challenges.
A workgroup of over 40 relevant participants was assembled to support the project. Steer worked to develop a long list of solutions, considering different pipe damage and methods of application. These ideas were explored through a combination of testing and workgroup engagement. This iterative, operational-led design continued refining the concepts into "tool families", aimed at the most common incidents with a strong potential for success.
![DSCF0981](https://steer.filecdn.uk/media/_1000xAUTO_crop_center-center_none/DSCF0981.png?v=1718294087%2C0.5%2C0.5)
The HVGE Toolkit
The final delivered solution was a HVGE Toolkit, containing three different tools and a common control hub.
THE BOSIE
A remote means of placing a repair clamp over the exposed and damaged pipe.
THE FROG
A remotely placed external patch with internally locking legs to fix the cover in place over the pipe.
THE BUNG
This has two variants; the first aimed at severed small bore pipes such as standpipes and services, and a second aimed at torn out fitting leaving a regular circular aperture.
![DSCF0873](https://steer.filecdn.uk/media/_1000xAUTO_crop_center-center_none/DSCF0873.png?v=1718294090)
For More Information
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