ASNT Industrial Radiography Radiation Safety Practice Test

What is the required accuracy range for a survey instrument used in industrial radiography?

1. ±15%

2. ±10%

3. ±25%

4. ±20%

The correct answer is: ±20%

In industrial radiography, the requirement for the accuracy of survey instruments is essential to ensure safe practices and effective monitoring of radiation exposure. The correct accuracy range for survey instruments used in this context is ±20%. This level of precision is designed to provide sufficient reliability in measurements, allowing radiation safety personnel to assess the potential exposure levels accurately. Having an accuracy of ±20% implies that the instrument can produce reliable readings within that margin, which is crucial for making informed decisions regarding safety protocols and compliance with regulatory standards. This accuracy helps in ensuring that the operators and other personnel involved in radiography are protected from unnecessary radiation exposure. In industrial applications, a ±20% accuracy range strikes a balance that accommodates the typical variances encountered in operational environments while still providing adequate confidence in the measurements obtained. Therefore, adherence to this standard is vital for effective radiation safety management in industrial radiography settings.