Jebel Dhanna #1 CALM
Scope of Work
SOFEC designed, constructed, and installed a CALM Buoy system to accommodate up to 450,000 dwt tankers.
General Description
| Client Name: | Abu Dhabi Company for Onshore Oil Operations (ADCO) |
| Contract Award: | March 1995 |
| Installation Date: | December 1995 |
| Application: | Crude Oil Export |
Project Specifications
| Water Depth: | 20.7m (68ft) |
| Tanker Size: | 450,000 dwt |
| Dimension: | 11mØ x 4.5m |
| Floating Hose: | 2 x 20-in. |
| Underbuoy Hose: | 2 x 20-in. Chinese Lantern |
| Hawser System: | 14-in. Single grommet |
| Anchor Leg System: | 6 x 3-in. ORQ |
| Anchor System: | 13mt Drag anchors |
Design Environmental Criteria
Operational
| Significant Wave Height: | 1.3m (4.3ft) |
| Wind Velocity: | 14m/s (27.2 knots) |
| Surface Current: | 0.3m/s (0.58 knot) |
Survival
| Significant Wave Height: | 2.2m (7.2ft) |
| Wind Velocity: | 22.3m/s (43.3 knots) |
| Surface Current: | 0.3m/s (0.58 knot) |
Comments
This SOFEC designed export CALM system was installed in 21m water depth. This included an extension of the existing 42-in. sealine and removal of the existing CBM. This was the third project in which SOFEC was involved in the replacement of a CBM system with a more efficient SPM system.