A method for scheduling and rescheduling interventions by an operator in an environment exposed to radiation, in particular to ionising radiation, implementing a system, including: a. a supervision centre comprising a processor memory means, display means and means for accessing a network; b. an individual detector, in particular a radiation meter, linked to the operator, capable of obtaining a measurement of the exposure intensity, and including means for addressing said measurement on the network intended for the supervision centre; d. means for geolocating the individual detector, comprising an identification means linked to said detector, in particular a radio frequency tag; f. a connection terminal, connected to the network, and available to the operator; g. a scheduling file, saved in the memory means and comprising the list, the duration, the location and the sequencing of the tasks of the operator; h. a fixed detector (121, 122) capable of measuring an exposure intensity, connected to the network, of fixed location in the environment and targeting an area of said environment; said method comprising steps of: i. acquiring a map called initial map of the intensity of exposure in the environment and saving it in the memory means; ii. acquiring at a first frequency the information from the individual detector associated with the geolocation information of said detector and saving them in a history file; iii. processing the data contained in the history file by the processor and obtaining: iii.a an update of the map at a second frequency less than the first frequency and saving this update; iii.b an update of the operator exposure information at a third frequency less than the first frequency, saving this update in an operator tracking file; iv. displaying the updated data on the display means of the supervision station. V. acquiring an initial scheduling and saving it in the scheduling file; vi. acquiring a measurement of the exposure intensity in the area covered by the fixed detector at a fourth frequency; vii. updating the map using information acquired in step vi); characterised in that the processing step iii) comprises grouping the measurements by operator, by location and by date and the processing of the measurements by group thus obtained, and comprises a step of summing the exposure over time, starting from a date of origin, in order to determine, the amount of ionising radiation to which the operator has been exposed until a final summation date, and comparing the exposure of the operator with respect to the task carried out and the tasks yet to be carried out. a. a supervision centre comprising a processor memory means, display means and means for accessing a network; b. an individual detector, in particular a radiation meter, linked to the operator, capable of obtaining a measurement of the exposure intensity, and including means for addressing said measurement on the network intended for the supervision centre; d. means for geolocating the individual detector, comprising an identification means linked to said detector, in particular a radio frequency tag; f. a connection terminal, connected to the network, and available to the operator; g. a scheduling file, saved in the memory means and comprising the list, the duration, the location and the sequencing of the tasks of the operator; h. a fixed detector (121, 122) capable of measuring an exposure intensity, connected to the network, of fixed location in the environment and targeting an area of said environment; i. acquiring a map called initial map of the intensity of exposure in the environment and saving it in the memory means; ii. acquiring at a first frequency the information from the individual detector associated with the geolocation information of said detector and saving them in a history file; iii. processing the data contained in the history file by the processor and obtaining: iii.a an update of the map at a second frequency less than the first frequency and saving this update; iii.b an update of the operator exposure information at a third frequency less than the first frequency, saving this update in an operator tracking file; iii.a an update of the map at a second frequency less than the first frequency and saving this update; iii.b an update of the operator exposure information at a third frequency less than the first frequency, saving this update in an operator tracking file; iv. displaying the updated data on the display means of the supervision station. V. acquiring an initial scheduling and saving it in the scheduling file; vi. acquiring a measurement of the exposure intensity in the area covered by the fixed detector at a fourth frequency; vii. updating the map using information acquired in step vi);