By interdam

InterDam installs the first RWS approved tunnel door!

After an extremely short design process of only 6 months and a successful full-scale fire test InterDam has the first RWS approved tunnel door. Usually, the products of InterDam are tested against the IMO cellulosic (960 degrees) or hydrocarbon (1100 degrees) fire curves. In tunnels, the Rijkswaterstaat fire curve is applicable, which is even more intense (1350 degrees) than the hydrocarbon curve.

InterDam’s R&D engineers, engineers and Operations have realized a design in this extremely short timeframe to achieve the result accepted by the client. The subject doors are designed according to opening against an extreme overpressure of more than 200 Pascal, whilst the opening force is only 100 N for people seeking a safe haven in case of emergency. Last week the first door has been installed in the tunnel by the experienced InterDam crew onsite.

InterDam, Your Shield in the Field!

Do you want more information about tunnel doors and our solutions? Please send an email to

Summer Campaign

Summer Campaign

Summer season is the perfect time to execute offshore maintenance and refurbishment activities. Offshore work at this time of year is safer and faster, that is what everybody wants, right? Over the past years we noticed that the demand for our doors, cladding and all...

InterDam’s perspective on safe tunnel doors.

InterDam’s perspective on safe tunnel doors.

The lack of space and urban needs have accelerated the digging of tunnels and underground spaces. Today the world digs 5.200 kilometers of tunnels per years. The world builds tunnels but it also need to make them safe for users.  InterDam’s perspective on safe...

Proud to be a piece of this puzzle

Proud to be a piece of this puzzle

Tyra II is Denmark’s new high-tech hub for natural gas production in the Danish North Sea. A redevelopment of the Tyra field is was necessary due to the field’s natural subsidence after many years of production. The platforms have sunk nearly 5 meters over the past 35...

InterDam B.V. Head Office

InterDam B.V.
Klompenmakerstraat 12
2984 BB Ridderkerk
The Netherlands
T: +31 (0) 180 470030

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