High Capacity Suction hatch for suction anchor installation / retrieval
SubseaDesign suction hatches are highly efficient during the subsea operation. It is supplied prepared for welding into suction anchor top and can be delivered with pipe outlet to interface with a suction system.
It can also be delivered with integrated suction stab receptacle.
features and benefits
- ROV friendly operation
- Integrated locking mechanism
- Sealing arrangement accepts both suction and overpressure
- Compact design
interfaces
- Prepared for welding into suction anchor top
- Can be delivered with pipe outlet to interface with suction system
- Can be delivered with integrated suction stab receptacle
- Can be delivered with temporary bottom to allow for pressure testing after welding into suction anchor
- Can be delivered with anodes to protect hatch for the service life
- Delivered with electrical strapping
Hatch with electrical strapping for long term service
Hatch with integrated stab receptacle
Template during installation with SubseaDesign delivered suction hatches
how it works
During installation, the hatch is secured in opened position. After suction anchor landing and self-penetration, the ROV will remove the securing mechanism. Thehatch then closes by freefalling. The ROV will operate the handles to closed positions.
During suction anchor retrieval the suction hatch will be opened when the suction anchor is ready to be lifted out of the ground. The operation handles will be released, and the hatch is rotated with the assistance of a lift wire to surface.
technical data
| Design code | ISO 13628 |
| Size | 700 mm diameter |
| Weight | 452 kg |
| Design suction pressure | 20 bar |
| Design over pressure | 20 bar |
| Max. water depth | No limitation |
| Lifetime | 25 years |
| Coating | Typical Norsok system 7, or as required |
