- Never let anybody unaware of security instructions use pneumatic plugs.

- Never enter a confined space without verifying for harmful gases.  The plugging of a live conduit may cause gas formation and accumulation.

- Control the inflation pressure and the back pressure.  Always inflate the pipe plug from a safe distance using an extension hose fitted with a pressure gauge, a pressure regulator, a preset safety valve and a shut-off valve.

- Do not rely on friction to withstand a back pressure when important material damages and people's safety are at stake.  Always secure the plug.

- Never stand close to an inflated plug without the protection of a bulkhead designed to guarantee the security in the event of a failure or dislodgment of the plug.

- Test the plug, the inflation hose and the controls before each use and keep a record of the tests.

- Refer to the pipe plug information leaflet to supplement this safety measures list.