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Principle for dating materials using radioactive isotopes

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For example, to inspect new oil or gas pipelines, special film is taped over the weld around the outside of the pipe.

The height of the coal in a hopper can be determined by placing high energy gamma sources at various heights along one side with focusing collimators directing beams across the load.

Radioisotopes have the supreme advantage that they can be taken to the site when an examination is required – and no power is needed.

However, they cannot be simply turned off, and so must be properly shielded both when in use and at other times.

The attributes of naturally decaying atoms, known as radioisotopes, give rise to their multiple applications across many aspects of modern day life (see also information paper on The Many Uses of Nuclear Technology).

Radioisotopes are used by manufacturers as tracers to monitor fluid flow and filtration, detect leaks, and gauge engine wear and corrosion of process equipment.