What is the acceptable range for reading a survey meter in industrial radiography?

In industrial radiography, the acceptable range for reading a survey meter is crucial for ensuring safety and compliance with regulations. The correct range, which is 2 mR/hr to 1 R/hr, allows for effective monitoring of radiation levels that workers and the surrounding environment may be exposed to during radiographic operations.

This range is typically suitable because it encompasses the levels of radiation that might be encountered in industrial settings where radioactive sources are used for testing purposes. It starts at a lower level (2 mR/hr) that is appropriate for low-background areas, ensuring sensitivity to detect even small changes in radiation due to equipment use or leaks. The upper limit of 1 R/hr is high enough to include readings that are common during standard operations, but still within a limit that indicates a need for caution and possible intervention if consistently observed.

By using a survey meter within this specified range, radiographers can accurately assess radiation exposure, warn personnel of potential hazardous situations, and implement safety measures as necessary.