Posted By Mark Damrel The Principal Contractor is constructing a large factory and installing plant and equipment (robots, conveyors etc.) . Commissioning falls under CDM but when is commissioning complete? We have considered that machine guarding testing, slow running at 10% speed and low voltage testing is commissiioning. A section of the factory is then fenced and handed over to the client. That section ceases at this stage to become a construction site under CDM. The client then teaches the robots and carries out trial manufacturing runs. Any work carried out by the Principal Contractor after handover of a section is carried out under the clients permit to work system. Have we got it right?

Posted By Mark Damrel Ken thank you for your response. The matter of which sets of regulations apply and which enforcing authority is in control concerns us. It is also we think critical that we have a clear line of authority in both the construction site situation and the factory site situation. The competence for running the construction site we think is with the principal contractor. The competence for running machinery in trial runs and production lies with the manufacturing client.