Aker Solutions
Pusnes mooring systems™
Photographer: Tor Resser
Aker Solutions
Mooring systems 2010
For more than one hundred years and thousands of ships Aker Solutions is a leading global supplier of marine and offshore products and services, and is recognised worldwide as a leader in the design, engineering and supply of innovative Pusnes deck machinery™ and Pusnes mooring and loading systems™ for marine and offshore applications. Aker Solutions’ aim is to be the preferred partner, based on our ability to understand our customers business and add value to their projects. Close co-operation with classification societies and maritime authorities, combined with innovative design, quality products and worldwide lifecycle service, makes Aker Solutions the perfect partner for your marine and offshore projects.
3
4
Mooring systems 2010
Aker Solutions
Safe and secure
Blind Faith semisubmersible being transported to the Gulf of Mexico where it was installed in 2008. Pusnes R amWinches™ and chain fairleads for 127mm R4S chain were installed at the yard in Norway before sail-away.
Pusnes RamWinches™ installed onboard the Nansen, the world’s first truss spar. The winches are designed to endure submerged conditions prior to upending.
Pusnes RamWinches™ on the Devil’s Tower spar platform in the Gulf of Mexico at a depth of 1720m.
Aker Solutions has supplied Pusnes offshore mooring systems™ since 1968 and is recognised worldwide as an innovative designer and manufacturer of on-vessel mooring equipment for the offshore market. Many types of winches, fairleads and chain stoppers have been developed over the years.
we meet new challenges and provide equipment designed for safe and secure operation under the most demanding scenarios. Our mooring systems onboard vessels in hurricane-affected areas, such as the Gulf of Mexico, have on several occasions sustained the brutal forces these severe weather conditions can deliver.
Aker Solutions believes that commitment to continued research, studies and development has strengthened our position as a leading international company on a worldwide basis. Exploration and production in harsh climate areas requires innovative thinking. Together with our proven technology
Innovative and proven technologies at competitive prices, as well as proximity to the market are both important factors for ensuring future competitiveness. We have worldwide production capabilities that allow timely support of quality products to an ever-changing global market.
Aker Solutions
Mooring systems 2010
Pull-in winches and equipment
A typical riser pull-in arrangement onboard an FPSO.
Pull-in winch is a general term used to describe the various types of winches involved in pull-in operations, such as the riser pull-in and mooring line pull-in. Various ancillary equipment, for instance trolleys and turndown sheaves are often involved in operations such as the riser pull-in.
A 200 tonne lateral pullin winch onboard Total’s Greater Plutonio FPSO off the coast of West Africa.
A 100 tonne lateral pull-in winch onboard Chevron’s Blind Faith semi-submersible in the Gulf of Mexico.
5
6
Mooring systems 2010
Aker Solutions
Mooring winches Aker Solutions mooring winches have evolved from steam-driven ship winches back in the late1800s to the state-of-the-art electric and high-pressure hydraulic winches of today. Our offshore product range comprises anchor windlasses, chain jacks, traction winches, combination winches and rope/ wire winches. Custom control and monitoring systems provide precise handling and management of a single winch or an integrated system of winches.
Anchor windlass for a 145mm chain onboard the Snorre B production platform in the North Sea. The windlass consists of four cable lifters with a single electric drive/gearbox and two fail-safe band brakes per cable lifter. Brakes can be released using stored energy (accumulator) in an emergency situation. Wire winch on the crane barge Saipem 7000. This is the largest mooring winch drum Aker Solutions has designed and manufactured to date. The drum can accommodate 3000m of 96mm wire.
Aker Solutions
Mooring systems 2010
7
Chain jacks - Pusnes RamWinches™ - became a popular choice for the mooring of production vessels after their introduction in 1997. Compact size and low weight contributed to this winch being used on virtually all spar platforms in the Gulf of Mexico, and increasingly for semis, as pictured here onboard the Independence Hub. Most of the spar RamWinches™ are designed to endure submerged conditions during transportation of the hull (up to several months).
State-of-the-art anchor windlasses an 84mm chain installed onboard the Aker Barents drilling rig. Designed especially with the strict requirements for safe and reliable operations in mind.
The mobile windlass is a concept designed to operate multiple mooring lines within the same area. Normally, one windlass is skidded along a special foundation to operate one mooring line at a time. The unique design includes an air or hydraulic chain hoist system with trolley to handle the chain during the skidding operation. This same system is used to skid the windlass into position.
The Greater Plutonio FPSO off the coast of West Africa with Pusnes mooring equipment™ onboard.
8
Mooring systems 2010
Aker Solutions
Fairleads and chain stoppers Pusnes fairlead chain stopper™ from Aker Solutions being installed on the Dalia FPSO. These fairlead chain stoppers are installed on a number of FPSOs and semisubmersibles. The compact design, low weight and hull-mounted location contribute to lower topside deck weight. This unique design allows for chain locking in a long pivoting stopper arm on the side of a vessel’s hull, below the waterline. This constrains maximum loads to a limited area. Additionally, chain wear, static and fatigue stresses are greatly reduced. Pusnes eccentric fairlead chain stoppers™ installed onto the hull of the Pazflor FPSO. These fairlead chain stoppers are of a slightly different design where the chain approaches the guide wheel directly and not through the vertical rotation axis.
3D graphic representation of Pusnes fairlead chain stopper™.
Aker Solutions has an excellent reputation for supply of high-quality, long-life fairleads and chain stoppers. They are designed for operation in all climate zones and the harsh environments found both above and under water. Our latest fairlead designs include appurtenances that allow for the removal and re-installation of fairleads underwater at the vessel’s offshore location. We have also designed the special tools needed for this operation. In recent years, a popular choice for offshore production mooring has been the innovative Pusnes fairlead chain stopper™. This unique fairlead combines the flexibility of a flag-type fairlead with the holding ability of a chain stopper.
Aker Solutions
Mooring systems 2010
9
Pusnes eccentric chain fairlead™. These fairleads are known for their robustness and virtually maintenance-free life. Recent designs allow diverless installation/replacement. The eccentric chain fairlead has become the preferred choice for both drilling and production vessels. These can also be designed for wire or chain/wire combination. Photo from Visund production platform.
Pusnes eccentric chain fairleads™ mounted on the hull of ExxonMobil’s Diana spar in the Gulf of Mexico in 1999. This was the first of many deliveries of mooring equipment to the spar platforms in the Gulf of Mexico by Aker Solutions.
Pusnes bellmouth chain stopper™ provides a simple means of chain holding in benign areas where the mooring line can run straight off the deck. The stopper is designed for the full breaking load of the chain. In addition, a mobile tensioning device has been designed to move from stopper to stopper. A portable hydraulic power unit can be delivered to power the tensioning device.
Pusnes bull’s eye chain fairlead™ is the grandfather of fairleads for offshore drilling rigs. Although we see a shift towards eccentric chain fairleads, bull’s eye fairleads still serve a purpose when the mooring line needs to be held close to the hull. These can also be designed for wire or chain/wire combination.
10
Mooring systems 2010
Aker Solutions
Power supply and control systems A typical high-pressure hydraulic power unit with three pumps. The cooling of hydraulic oil can be done via seawater, freshwater, or an air system.
Both high-pressure hydraulic and AC/DC electric power can be used to drive the various types of offshore mooring winches. The hydraulic power units (HPU) are a stateof-the-art design that provides a dependable source of power and performance in harsh and varying offshore environments. High-pressure hydraulics in a “ring main” system enables use of smaller pipe diameters and shorter pipe lengths. Pusnes offshore winches™ from Aker Solutions are normally controlled by modern programmable logical controllers (PLC) in separate cabinets, where all status/alarm messages can be transferred to a designated control room. Graphic terminals with clear color displays act as an interface between operator and equipment.
Local control console for operating Pusnes RamWinches™ onboard the Blind Faith semi.
Graphic display built into an operation panel for Pusnes Windlasses™ installed on the Aker Barents drilling rig. Each windlass is driven by a 450kW electric AC motor.
Aker Solutions
Mooring systems 2010
Lifecycle services Aker Solutions has a worldwide lifecycle network which supplies customers with spare parts, service and support whenever and wherever the need occurs. Aker Solutions´ lifecycle services unit offers fast and efficient delivery of spare parts and skilled personnel for commissioning, maintenance and repair work. Beneficial equipment upgrades and modification of existing equipment and systems are also provided. Pusnes academy™ The Pusnes academy™, located in Arendal, was officially opened in January 2009. The academy is equipped with top class modern facilities e nsuring the perfect learning environment. The Pusnes academy™ offers a number of product specific operator courses which include theory, operation and hands-on experience. Tailored courses are available upon request.
Lifecycle services locations for Pusnes mooring and loading systems™.
Arendal (Norway)
Busan (South Korea) Houston (USA)
Dubai (UAE)
Guangzhou (China)
Singapore
Macae (Brazil)
11
| 0023
Aker Solutions mooring and loading systems: Head office
South America
Asia
Aker Pusnes AS Service Box 732 4808 Arendal NORWAY Tel: +47 37 08 73 00 Fax: +47 37 08 65 50 pusnes@akersolutions.com
Aker Solutions do Brazil Ltda. Rodovia Amaral Peixoto km 162 – ZEN Rio das Ostras, RJ BRAZIL Tel: +55 22 2273 9010 Mobile: +55 22 9283 5650 pusnes.brazil@akersolutions.com
North America
Middle East
Aker Pusnes Korea Co., Ltd. 837, Daera-Ri, Gijang-Eub Gijang-Gun Busan 619-903 SOUTH KOREA Tel: +82 51 720 6200 Fax: +82 51 720 6230 Mobile: +82 10 6583 7748 office@pusnes.co.kr
Aker Solutions 2103 City West Blvd, Suite 400 Houston, TX 77042 USA Tel: +1 713 270 2679 Fax: +1 713 272 4070 Mobile: +1 832 630 0112 pusnes.houston@akersolutions.com
Aker Solutions Plot No. 33, Port of Fujairah P.O. Box 2501 Fujairah UNITED ARAB EMIRATES Tel: +971 9 228 2338 Fax: +971 9 228 1898 Mobile: +971 50 433 7750 pusnes.dubai@akersolutions.com
© 2010 Aker Solutions All rights reserved.
Aker Solutions Pte.Ltd. 25, Benoi Lane SINGAPORE 627800 Tel: +65 6303 4465 Fax: +65 6303 4456 Mobile: +65 9231 6890 pusnes.singapore@akersolutions.com
www.akersolutions.com/pusnes
Aker Solutions c/o Bee Fortune Co. Ltd. Tower 1, Flat A, 23F 268 Zhong Shan Da Dao Tianhe District Guangzhou CHINA 510660 Tel: +86 20 8231 5211 Fax: +86 20 8231 1200 beechan@vip.163.com Aker Pusnes AS Subsidiaries Aker Porsgrunn AS www.akersolutions.com/steeringgear Woodfield Systems Ltd. www.akersolutions.com/loadingarms