If you get paid for the month, you accrue 2.5 days of leave for that month. When I got out I took this into consideration for setting my terminal leave date.
Health Protection is a term used to encompass a set of activities within the Public Health function. It involves: Ensuring the safety and quality of food, water, air and the general environment.
Radiation Protection is a general term applied to the profession / science related to protecting man and the environment from Radiation hazards. Strictly speaking it should represent all forms of radiation (e.g. Ionising and Non-Ionising) but is mostly applied to ionising radiations.