Radiation Safety Practice Exam

Which item is commonly used for measuring density and moisture and contains radioactive material?

1. M72 LAW rocket

2. Troxler Density Moisture Tester

3. Mortar

4. PGU 20U

The correct answer is: Troxler Density Moisture Tester

The Troxler Density Moisture Tester is commonly used to measure both density and moisture in materials, particularly in construction and civil engineering. This device utilizes radioactive sources, typically isotopes like cesium-137 or americium-241, to gauge the density of materials such as soil or asphalt. The radioactive material emits energy, which interacts with the material being tested; this interaction allows the device to determine how dense the material is based on the amount of radiation that passes through it. In the context of radiation safety, the use of such devices is regulated, and operators must follow strict guidelines to ensure safety when working with radioactive sources. The unique design and purpose of the Troxler Density Moisture Tester make it an essential tool in fields requiring precise measurements of material properties, especially in environments where traditional methods may be less effective or more time-consuming.