Fairfield Energy had a plug and abandonment (P&A) tower installed on the Dunlin Alpha platform. They had identified major delays from previous campaigns were a direct result of the aged platform crane’s reliability and the downtime associated.
Brimmond Group were approached to provide a temporary lifting solution to support wellhead operations and remove any reliance on the platform cranes. The platform presented complex challenges due to its ageing assets and platform cranes de-rated ship to platform lift capacity of 9.5te.
Brimmond Group provided a rental modular 175txm marine crane package capable of 21.47 metres outreach. The crane was provided in modules that would remain within the platform cranes lifting capacity and was fully assembled in-situ by our experienced team of offshore technicians. To minimise the use of the platform cranes during assembly the package was supported by a frame with sections being lifted into positions using spreader bar frame.
The crane was installed on a skidding system and acted as an auxiliary crane to the platform’s main cranes. This helped reduce the workload of the platform’s cranes by taking on some of the day-to-day lifts and P&A related lifting activities. The package supported Fairfield Energy for the duration of hire by Brimmond Group technicians and operators with level Stages 1 & 2 in accordance with BS7121 Part 11.
Scope of Supply
- Outreach 7.08 - 21.47 metres
- 5.00 tonne winch double reeved for 10.00 tonne
- Standard crane system fully converted for use within a Zone 2 Hazardous Environment
- Installed with Zone 2 remote control system QTY 2.00 x 45kW Electric HPU
- DNV 2.7-1/EN12079 certified frame
- QTY 3.00 Technicians 5-7 days assembly time with no HSE incidents and no safety issues recorded