Emergency foot valve

[rsauk]

I have been asked to consider the inclusion of "emergency foot valve" in a storage tank (BS2654) which will contain Hydrogen peroxide.
Why is this and how will it operate. It is to be manually operated from top of tank.

 

[MJCronin]

rsauk,

Using GOOGLE I can find only a couple of reference to an "emergency foot valve"....

Both are in reference to tanker (Lorry?) truck delivery of petrochemicals. The "emergency foot valve" seem to be a spring loaded valve that the operator must stand on for liquid transfer to occur. The location would have to be on the bottom of the truck.

I do not see how this would apply to a stationary tank.

MJC