In the RIW System, the Network Operator is responsible for selecting one Contractor in Charge for each Project. Where the Contractor in Charge is also the Principal Contractor (for OHS purposes), there will still only be one Contractor in Charge in the system. 

Where the Project is being delivered by a Joint Venture and the Contractor in Charge is an accredited rail transport operator, but the Joint Venture wishes to nominate a Principal Contractor (for OHS purposes), this can still take place.

However, within the RIW System, the Contractor in Charge is whoever was selected by the Network Operator at the creation of the Project.  Please refer to our article on How does a Network Operator set up a project in the RIW system?