Alimak - Offshore Lifts for Men and Materials

Alimak has been supplying Rack and Pinion lifts to the offshore industry since 1974 when it installed its first unit on an Aker H-3 design semi-submersible. Today about 500 Alimak lifts have been delivered into this specialized market. They are installed on derricks, flare towers, in hull columns, outside platform modules and underneath helicopter decks. The lifts replace potentially hazardous stairways and ladderways to provide convenient access to pump and machine rooms and other critical areas.

The following is a list of recent orders:

KVITEBJØRN DERRICK PERSONNEL LIFT

A 450kg personnel lift for the derrick of Kvitebjørn fixed steel production platform. The lift will be explosion protected for Zone 2 operation and will be equipped with an ALC full collective car operating system. The total lifting height is 29m.

VALHALL STEEL JACKET

Two Alimak access lifts with 1,200kg lifting capacity will be installed on this oil drilling rig in the North Sea. The lifts will be fitted on the outside of the rig and travel a distance of 11m and 18m respectively. Delivery is scheduled for the end of 2001.

MAERSK SEMI-SUBMERSIBLE CONTRACTOR

Built by Keppel FELS in Singapore, the new Maersk semi-submersible will operate in the Caspian Sea starting 2003. There will be two Alimak access lifts in the hull columns with a lifting height of 30m and a transport capacity of 500kg.

SNORRE B

Three Alimak lifts are installed in the hull columns of the Snorre B semi-submersible. The twin-masted lifts have a capacity of 6,000kg and are the biggest lifts that Alimak has ever supplied to the offshore industry. When used in normal operation, the capacity will be restricted to 1,500kg at a speed of 0.65m/sec. By downrating the speed to 0.3m/sec the necessary 6,000 kg capacity can be achieved to transport pumps up the leg for overhaul. The lifts are provided with variable frequency drive (VFC). The lifting height of the lifts is 40m and there are four landings into the stairway.

ADVANTAGES OF ALIMAK RACK AND PINION LIFTS

• Lift concept developed for rough industrial environments
• Simple and cost efficient installation
• No separate machine room
• No lift-well or hoistway trunk needed
• Simple interface to structure
• Narrow installation profile
• Suitable drive system for curves and inclines
• Explosion protected lifts for hazardous areas
• Operation not affected by rolls, pitches or heaves
• Easy to retrofit to existing structures
• Can also be installed outside platforms

EXPLOSION PROTECTED LIFTS

Alimak supplies explosion protected lifts for use in hazardous areas Zone 2 or Zone 1 with gases Group IIBT4 or IICT4 as per IC79 (similar to Class 1, Div.2 Group B,C or D according to NEC of USA). The electrical equipment complies with international standards IEC 79 and European standards EN 50014 through EN 50020. All fixed cables are approved by organisations like DNV, Lloyd's, ABS, USCG and Bureau Veritas.

RETROFITS

Alimak lifts can easily be installed on existing rigs that are brought in for upgrade.

ISO 9001 QUALITY

Alimak obtained ISO 9001 certification in 1993. We have also obtained third party project certification by independent agencies such as Lloyd's, DNV and ABS.

Alimak engineers have long and vast experience from projects with high demands and are able to handle special project through all stages. They are trained and organised to provide project plans and risk analyses, carry through approval and inspection procedures and deliver correct, complete documentation on time.

WORLDWIDE ORGANISATION

Alimak sells and services Rack and Pinion lifts in more than 60 countries around the world. This means that spare parts and skilled service personnel are at hand at the nearest seacoast, wherever the platform is working.