Description
Castrol Anvol CF 22 is water based hydraulic fluid specifically formulated for use in all elements of floating Drilling and Production unit Motion Compensation systems, including heave compensators and riser, guide line and pod line tensioners. Castrol Anvol CF 22 is also suitable for use as the operating fluid in closed loop Blow-out Preventer (BOP) control systems. Because of their excellent fire and explosion resistance, water-glycol fluids are the preferred hydraulic medium for motion compensation systems. To provide the maximum assurance of safety, Castrol Anvol CF 22 also meets strict requirements with respect to compression ignition. The fluid passes the 50:1 compression ratio requirement as specified in MIL-H-22072. Castrol Anvol CF22 has viscosity-temperature characteristics which enable it to be used in motion compensation and BOP systems across the full range of ambient conditions encountered without adverse effect on system response, even when operating at low temperatures. Because of the risks associated with the location of Motion compensation and BOP systems, the use of lubricants in these systems is subject to the requirements of the OSPAR Harmonised Mandatory Control Scheme.All components have been tested to meet OSPAR requirements. Being based upon water and glycol, Castrol Anvol CF 22 disperses in sea water which makes its components available for biodegradation. Castrol Anvol CF 22 is not miscible with mineral oil and when changing from mineral oil based products to Castrol Anvol CF 22, the system should be drained thoroughly and all accumulators should be fully discharged to eliminate mineral oil residues. Flushing with potable water before refilling with Castrol Anvol CF 22 is recommended. More detailed advice on changeover procedures is available upon request.
