For cargo spaces – 30% of the volume of the largest cargo space.
- For machinery spaces – 40% of the largest machinery space. This is excluding engine casing. 35% if including engine casing.
- For machinery spaces – 85% of the gas discharged in 2mins.
- Two separate controls. One control for opening the valves for the pipelines supplying the gas and the other control for releasing the gas.
- Controls should be inside a release box well marked according to the space they release the gas in.