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Dangote CALM Buoys SPM-C1 & SPM-C2

 
 
Dangote CALM Buoys SPM-C1 & SPM-C2 Image
 
 

Scope of Work

SOFEC was responsible for the engineering, procurement and construction of five (5) CALM Buoys and associated anchor chain legs, PLEMs, piles, hoses, mooring hawsers, and all ancillaries in accordance with Oil Companies International Maine Forum (OCIMF) Guidelines. The project was executed primarily by SOFEC’s Singapore team with support from the Houston office.

The two (2) Crude Oil buoys are capable of transferring up to 80,000 Barrels Per Hour (BPH) of Crude oil to a calling tanker of up to 320,000 DWT. They are used to import feed stock to the refinery.

The Multi-Product buoys are capable of transferring up to 25,000 BPH of segregated refined products to calling tankers of up to 160,000 DWT. These buoys are used to export ethanol, gasoline, diesel, jet fuel and kerosene. Each of the export product lines on these multi-product buoys shall be dedicated to a single type of product.

The buoys are classed by American Bureau of Shipping and were constructed in SE Asia.

Dangote CALM Buoys SPM-C1 & SPM-C2 Location Image
 
 

SOFEC was responsible for the engineering, procurement and construction of five (5) CALM Buoys and associated anchor chain legs, PLEMs, piles, hoses, mooring hawsers, and all ancillaries in accordance with Oil Companies International Maine Forum (OCIMF) Guidelines. The project was executed primarily by SOFEC’s Singapore team with support from the Houston office.

The two (2) Crude Oil buoys are capable of transferring up to 80,000 Barrels Per Hour (BPH) of Crude oil to a calling tanker of up to 320,000 DWT. They are used to import feed stock to the refinery.

The Multi-Product buoys are capable of transferring up to 25,000 BPH of segregated refined products to calling tankers of up to 160,000 DWT. These buoys are used to export ethanol, gasoline, diesel, jet fuel and kerosene. Each of the export product lines on these multi-product buoys shall be dedicated to a single type of product.

The buoys are classed by American Bureau of Shipping and were constructed in SE Asia.

Dangote CALM Buoys SPM-C1 & SPM-C2 Location Image
 
 

General Description

Client Name:Dangote Petroleum
Contract Award:August 2016
Installation Date:July 2020
Application:Import Crude Oil
Flow Capacity:80,000 BPH
 
 

Project Specifications

Water Depth:SPM-C1: 36m (118ft) SPM-C2: 40m (131ft)
Tanker Size:320,000 DWT
Buoy Dimension12.5mØ x 5.3m
Fluid Swivel Type:Inline Swivel
Hose System:Dual 24-in. Double Carcass
Hawser System:Dual Single Leg (non-grommet) 55m long, braided nylon
Anchor Leg System:6 x 1 configuration, 76mmØ, Studless Gr. R3, 312m long
Anchor System:Driven anchor piles
 
 

Design Environmental Criteria

 
 

Operational

Significant Wave Height:2.8m (9ft)
Wind Velocity:10.1m/s (19.6 knots)
Surface Current:0.67m/s (1.3 knots)
 
 

Survival

Significant Wave Height:3.9m (12.8ft)
Wind Velocity:12.8m/s (24.8 knots)
Surface Current:1.0m/s (1.9 knots)
 
Download Spec Sheet
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