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 (1200 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

Dutch Ministry of Defence opens its doors to lasting safety

Dutch Ministry of Defence opens its doors to lasting safety

Recently, the Maintenance Group Groot Grijs (Dienst Instandhouding) from the Dutch Ministry of Defence and InterDam have signed a contract agreement for a maximum of 15 years for the maintenance and repair of over 2300 doors on board the Groot Grijs vessels.

Official Opening new location InterDam!

Official Opening new location InterDam!

Last Friday, InterDam celebrated officially opened the new location at Klompenmakerstraat 12 in Ridderkerk. Although the company moved to the new location in March, the celebration could not be held earlier due to the Covid regulations. With our vision to be the...

InterDam B.V. Head Office

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

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