Castrol Offshore said its GreenField lubricants is likely to remain the only products fully tested to environmentally-responsible standards set by Norwegian authorities through 2011. Changes to Norwegian Activities Regulations introduced on January 1st 2010 require discharged lubricants and chemicals, used in closed systems in amounts of more than 3000kg a year per facility, to be registered for use offshore. Applications including crane hydraulics, thrusters, drilling system hydraulics and mooring winch gears, require Harmonised Offshore Chemicals Notification Format (HOCNF) registered products. Castrol Offshore proactively registered its products before the January 1st 2010 deadline. NEMS database.