How does nuclear density testing work?

The device determines the density of the material by counting the number of photons emitted by a radioactive source (cesium-13) that are read by the detector tubes in the base of the meter. A time interval of 60 seconds is normally used for the counting period. While in direct transmission mode, the sensor (located on the back of the nuclear density meter) measures the amount of gamma radiation emitted by the source rod. In short, the less radiation the sensor detects, the higher the density of the material.

This is why it is important to select the correct depth of penetration of the source rod, since a lower depth will allow more radiation to reach the sensor than if it were deeper in the same material. Nuclear meters use radioactive sources to identify the thickness, density, or composition of a wide variety of materials or surfaces. Medical, Industrial and Academic Uses of Nuclear Materials Regulations, Guidance and Communications This website has links to NRC regulations and guidelines for the medical, industrial and academic uses of nuclear materials. All workers who use nuclear meters should receive specialized training to understand how to handle and use nuclear indicators.

Leave Message

All fileds with * are required