Rosenberg Worley Norway and Bluewater Energy Services B.V. are currently upgrading the Vår Energi Jotun A FPSO to extend the life of the Balder area in the Norwegian part of the North Sea.
The turret refurbishment will be engineered and designed by BES and being performed in Dubai yard while the FPSO will be handled in the Rosenberg Worley Stavanger Yard.
Into the new turret a number of 61 main actuated valves will be installed, including the 6 Nos’s of high pressure and high integrity Mokveld Choke valves.
The 61 No’s of valves will be powered and controlled by the Main HPU which was purchased by BES at DAC Technologies BV in the 3rd quarter of last year with a delivery request to be delivered in middle of April 2021.
The HPU has been engineered, designed, delivered and mounted as hanging configuration, to be connected to the rotating FPSO Turret, the total weight of the HPU is around 10 Tonnes.
HPU is supplied with 2 No’s main pumps, 2 No’s tanks (Main and return tank) SS316 piston accumulator with capacity in order to stroke each valve for one stroke without the need to power up the system and a sliding lifting beam construction on top of the HPU in order to remove parts from the HPU in case of any maintenance required.
The design of the HPU has been verified by DNV, while both Rosenberg and Vår Energi were available during the inspections and factory acceptance tests.
The upgraded Jotun A FPSO is expected production start in the second half of 2022.