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 anodes to protect hatch for the service life
- Delivered with electrical strapping
SUCTION HATCH models
⌀ 660 mm, 6 bar
⌀ 914 mm, 6 bar
⌀ 762 mm, 10 bar
⌀ 610 mm, 12 bar
⌀ 660 mm, 20 bar
Technical data
| Design code | ISO 13628 |
| Pipe size | 660 mm diameter |
| Height (open) | 360 (1198) mm |
| Width | 893 mm |
| Length | 1138 mm |
| Weight | 453 kg |
| Pressure rating | 20 bar |
| Max. water depth | No limitation |
| Coating | Typical Norsok system 7, or as required |
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. The hatch then closes by freefalling. The ROV will operate the handles to closed position.
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.
Document | Download link |
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Product datasheet | click here |
