If I need to cross a simple controlled radiation area to get from one supervised radiation area to another, do I need to wear an operational dosimeter (DMC) ?

While passing from one supervised radiation area to another through a simple controlled area, no operational dosimeter (DMC) is required. This applies as well if you need to work in a simple controlled area. The operational dosimeter is only required in Limited Stay Controlled Radiation Areas, as indicated on the classification signs.