I work as a Clinical Educator in one of the largest dialysis center & training centre here in saudi arabia and we have a lot of nurses from other hospitals come in for training. And i say 5 weeks is definitely not enough. Our orientation and training program lasts for 3 months (practical) & 1 month lectures (theory). Its not just enough to learn how to operate & troubleshoot your dialysis machines, but understanding the theories e.g. basics & principles of dialysis, H.D apparatus, care and use of vascular access, anti coagulation, common complications in H.D, infection control, and a lot more...would make you a better-educated and more effecient dialysis nurse.