PetroMagasinet 2-2013 | Page 31

Marine Riser Tension System

Description The Marine Riser Tensioners is used on floating drilling vessels to make sure that there is reliable and continuous vertical tension inn the riser when the rig is heaving due to waves and wind .
Technical information
• Customer adapted design .
• Wire tension load : 45,35 Metric Ton ( 100 000lbf ).
• Wire travel : 15,2m ( 50 ft ).
• Media : Nitrogen-air / Water Glycol or Hydraulic oil .
• Cylinder stroke : 4000mm .
• Anti Recoil Valve / shut-of valve .
• Adjustable tension force .
• Max working pressure 207 Bar ( 3000 PSI ).
• The Riser Tensioner can be arranged as single or dual units .
• DNV – ABS Approval . www . malmorstad . no