Ionising Radiation Regulations (IRR17) details that a critical examination must be carried out if there are radiation protection implications arising from the way in which an article is being, or has been, erected or installed.
Shielding verification, also known as shielding integrity testing, is a method of determining the level and integrity of installed shielding by explicitly using radiation sources prior to final commissioning. This is particularly important for new facilities and those where a change of use is planned.
Shielding verification is typically performed using a small mobile radiation source that emits radiation of a similar energy to the final use case. A key advantage of using a mobile radiation source is that it is not constrained to a particular location and can be positioned where necessary to test specific areas and safely demonstrate that the shielding design intent has been achieved.