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Customised technical doors
Sealed door - Cassiopée

Sealed door - Cassiopée

Air / watertight door

Interchangeability with ANDROMEDE Cassiopée 6000 - 10000

Range : hatch, 1 leaf, 2 leaves

Airtight : 5000 Pa

Watertight : jusqu’à 10 mCE

Seismic load : up to 9g

Industry and references

This type of door is intended to nuclear, petrochemical and construction industries.

These doors are installed in Flamanville 3, Olkiluoto 3 and Taishan EPR NPPs as well as inresearch center of CEA (Cadarache) and French NPPs.

Technical information

• Steel sheet on both sides with coating finish, 1 leaf or 2 leaves or 2 leaves + transom, assembled by welding

• The frame is composed of different sizes angle brackets in painted steel, fitted with connectors for sealing into concrete

• The frame can be shared with fire resistant/watertight doors (CASSIOPEE - ANDROMEDE),which allows the interchangeability of doors

• Opening by adjustable hinges (2 or 3/leaf according to the dimension)

• Water and airtight gasket in cellular EPDM

• Pressure rated (air and/or water) both sides


• Embedding of the frame in the 1st or 2nd phase of concreting by leaving a recessof 200 x 200 mm at the rim

• Possibility to weld the frame on pre-sealed anchor plates or peg into concrete


• Manual lever lock (2 to 4/ leaf, according to dimension)

• Removable central mullion for double leaves door


• Finishing: galvanization Z600 and/or 3 layers of decontaminable painting • Door closer
• Decompression cup
• Up to 1,5m water column

• Position switch (open/closed)
• Coupling of locks
• Lock with panic function / electromechanical lock for access control
• Blast protection (Up to 350 mbar)
• Burglar protection (CR4 according to EN 1627-1630) on hinge plates side

Our references

Do you want to create a door based on an existing configuration?

Don't hesitate to contact us: our representatives are at your disposal to help you choose the technical door that will perfectly meet your needs and safety performance requirements.