What information is represented by the notation *#/# on a survey map?

The notation *#/# on a survey map specifically indicates dose rates at contact and at 30 cm distance. This notation is commonly used in radiological surveys to provide a clear understanding of the radiation levels present in specific locations. The first part of the notation typically represents the dose rate measured at a point of contact, showing the immediate radiation exposure one might receive when very close to a source. The second part indicates the dose rate measured from a standard distance of 30 cm away from the source, which accounts for the attenuation of radiation with distance.

Understanding this notation is crucial for assessing the safety and health risks associated with radiation exposure in various environments, particularly for radiation workers who must navigate areas of potential radiation exposure. Having clear information on dose rates helps in making informed decisions regarding safety protocols and protective measures in workplaces where radioactive materials are present.