In an African mine, a safety door was built about 500 metres below surface to protect the below part from water intrusion.
The door, 5 x 5 square metres, needs to close in case of an emergency. To seal this door, 3 inflatable seals are used, activated with max. 50 bars water pressure closing of the theoretical water column of max. 500 metres.
To facilitate this solution, we made the seals as strong as possible and shipped it from the Netherlands to Africa by container transport. The installation and testing was done by a team of mineworkers and our own technical team.