FPSO Case Study

Riser Pull-in Winch Overhaul

Critical asset maintenance, without impacting production


A North Sea operator was looking to efficiently and safely extend the life of the equipment on-board their FPSO through maintenance and refurbishment works. One of them was a riser pull-in winch, requiring an overhaul following a period of no operation.

MDL Solution

Following the initial scope of work which originally only covered a survey of the winch, MDL performed a complete refurbishment of the unit in-situ, without taking it ashore. This included the winch strip down, service and re-assembly; function testing; winch wire re-spooling; as well as recertification of the Ex-rated HPU, including CompEx sign-off.


MDL took care of the complete Project Management of the refurb, alongside the development of method statements, procedures; lift planning, commissioning, load testing and development of a 5-year maintenance and testing programme. Once the equipment was reinstated, MDL expert offshore crew operated the winch to perform the riser pull-in.

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