CASE STUDY: RIG DECOMMISIONING, A DIFFERENT APPROACH

CUSTOMER LOCATION: SOUTHEAST, ASIA SHIPYARD

SCENARIO: CUSTOMER NEEDED AN ALTERNATIVE METHOD TO DISMANTLE RIGS. THE CUSTOMIZATION NEEDED:

1. Ability to dismantle rigs from bottom to top as opposed to the traditional, yet expensive route of dismantling top to bottom. 
2. A way to maneuver the leg section so it would be in position for a crane to lift it out of the water

SOLUTION: 2 25T SUBSEA HOISTS

• Include waterproof design that protects all moving parts and bearings
• Made extremely durable; including corrosion-resistant chain, housing and fully enclosed gear box
• Used corrosion-resistant offshore paint, classified C5-M (very high corrosivity - marine) per ISO 12944

SPECIAL FEATURES OF THE CUSTOMIZED SUBSEA HOISTS:

• 30 meter operational depth
• Operates in a vertical or horizontal position
• Manifold includes overload protection and quick-down valves acting as limit switches
• Accepts up to 50 bar (750 psi) pressure in return line and provides fluid hammer protection