Method of detecting and outputting radiation dose rate information

A method of providing to a worker during an operation wherein the worker is situated within a Radiologically Controlled Area (RCA) continually updated information pertaining to the operation, the method comprising:

• detecting a number of measured dose rates at a number of times during the operation, each measured dose rate of the number of measured dose rates being representative of a rate at which the worker is exposed to ionizing radiation at a corresponding time of the number of times;
• periodically determining, based at least in part upon the number of measured dose rates, a measured accumulated dose at each time of the number of times that is representative of the accumulated exposure of the worker to ionizing radiation since the beginning of the operation;
• for each time of the number of times:
• subtracting the corresponding measured accumulated dose from an allowable maximum dose to determine a corresponding actual available dose that is representative of a corresponding additional accumulation of exposure of the worker to ionizing radiation that is permissible during the operation, and
• determining, based at least in part upon the corresponding actual available dose and a measured dose rate from among the number of measured dose rates, a corresponding actual time remaining until the worker will have been exposed to the allowable maximum dose;
• and
• outputting at one or more times of the number of times on a visual display a visible output that includes indicia which is representative, at least in part, of the actual time remaining.