Why do some people get new badges every month; while others get replacements at 2 month intervals?
DPH regulations establish monitoring requirements; people in positions or assignments that may cause them to exceed one-tenth (10%) of the applicable limits are badged monthly. Other people (most Research applications or uses) do not need the increased frequency to detect conditions that could lead to radiation exposures above our limits; in this case, users are issued badges every 2 months.