450T HINGED MOONPOOL DOOR
2017
Available
The Moon Pool Door (MPD) is a welded-up steel structure designed for the following load scenarios:
- Hang-off load at center : 450 metric tons
- Skidded load along beams : 150 metric tons
- Evenly distr. load on grating / Wing Hatches : 2.500 kg/m²
The construction has two main beams for the same span length as the moon pool. The opening mechanism is implemented by use of two cylinders folding the door down into the moon pool. The MPD is hinged in the moon pool Aft transverse bulkhead.
Incorporated in the door’s main beam structure are sections of the skidding beams, which make the skidding beams continuous as the door is closed, and thus allowing tools and equipment to be run straight through the derrick.
The STBD and PORT sections are incorporated hinged wing hatches with grating. When the wing hatches are closed, the MPD will form a complete safe and stable working area for the operators.
Operation:
MPD can be operated from local control stand or Operator Control Cabin (OCC). The hinged and grating-covered Wing Hatches which are supported on MPD central section, can be opened and closed independent of each other. The five manually operated, small, hinged “lid covers” are normally closed during operation.
4 slots for guide line wires are fitted with internal steel rollers to protect wire during operation. 2 slots for guide rails are also incorporated into the design.
Technical specification
SWL (Hang-off at centre): 450 Te
SWL (skidding beams): 150 Te
Operation pressure: 200 bar
Hydraulic Flow: 80 l/m
Weight(approx): 30 Te
This is a part of a Subsea Well Intervention & Drillship Equipment Package. Link to more info for Listing ID: UL 07007