More images of Offshore Access System obtainedNews // June 19, 2006
The heave compensated OAS is extended from Smit Kamara.
Personnel use the OAS to safely gain access to a rig.
Offshore Shipping Online has obtained more images of the unique Offshore Access Systems (OAS) fitted aboard Smit Kamara, Smit's newly delivered vessel built by Keppel Singamarine.
The OAS is being marketed by Amec in the UK and developer Fabricom in the Netherlands.
The Offshore Access System (OAS) is a specialist piece of equipment, intended to connect a moving vessel with a rigid offshore installation to allow the safe transfer of personnel in sea states of up to two and a half metre significant wave height.
Although the advanced technology of the OAS provides an extendable and stable gangway between the service vessel and the platform, the benefits which this brings to the customer are much more significant.
Reducing safety risks, reducing operating costs, and increasing productivity are all central to the OAS solution, said Amec, noting that it believes the OAS has many benefits, including:
• Safety risk to Normally Unmanned Unit (NUI) crews decreased by 50 per cent.
• NUI productivity increased by 70-80 per cent.
• Operating costs associated with helicopters significantly reduced.
• Multi-location NUI manning is the norm. 2-3 NUI’s per day easily achieved.
• Accommodation, workshops and transport from the vessel which can also be the standby vessel.
• ROV work is liquidated at the same time as maintenance, from the same vessel.
• Helicopter shuttling all but eliminated.
• Same day operational interventions to NUI’s, with potentially a 1-2 hour response time.
• Lost time due to fog a thing of the past.
• Work never has to be sent back to the beach. Gratings, spools, valves, handrails and structural steel all hot-worked in situ.
The OAS is designed as a stand-alone system, requiring only an electro- or diesel-hydraulic power supply and a foundation surface preferably on the aft deck of the ship.The position can be adjusted to the specific requirements of the ship or to the connection method to the offshore structure. A landing platform also needs to be installed on the offshore structure, generally at or just above spider deck level – with access to the topsides via the leg ladders or spider deck stairways.