Operation of turbine engines is well known and involves the use of a combustor in order to combust a fuel and therefore provide rotary power for the prime mover engine. Turbine engines are used in a wide variety of situations and the present invention has particular applicability to stationary engines utilised for electrical power generation and providing power for pumping operations etc. It will be understood that turbine engines are utilised in situations such as oil platforms where a local electricity generator and possibly pumping operations are required. In these situations generally natural gas drawn from production will be used in normal operation. However, during construction of the platform and during periods of no gas production the turbine engine must still remain operational at least to provide an electrical power source. Of particular advantage in situations such as oil platforms where there is little space is the high thermal efficiency of turbine engine with low emissions and package size. In such circumstances turbine engines are generally optimized for gas combustion and it is difficult to provide dual fuel operations due to the limited package space available for the fuel injection arrangement as well as costs if intrusive techniques are required to convert between fuels.