Environment (radiation)

D-values are used by the Environment Agency (EA), SEPA and the UK police advisers (CTSA) to determine the source category and appropriate security measures for sealed sources, where this cannot be assessed directly from the use/practice. D (Danger) values are in TBq, and the quotient A/D (where A is the activity of a source in TBq) are used to determine source category. In the UK some sources are already categorised for security and this will then take precedence over A/D. For those into dosimetry calculations and assessments behind D values, section 3 onwards explain in detail how the values are derived.

'New' guidance (2013) for businesses and individuals who have to handle naturally occurring radioactive substances (NORM). Guidance not intended for anyone who is using NORM for its radioactive, fertile or fissile properties. This resource is still valid but may be updated in time due to an updated UK wide radioactive substances exemption document released in August 2018. [Also applies in Wales and Scotland]

Essential resource for anyone in Wales who needs to apply for, comply with or revoke a permit made under the Environmental Permitting (England & Wales) Regulations 2016. This will cover the use of sealed radioactive sources, unsealed radioactive materials and the accumulation and disposal of radioactive waste. You might notice that the documents are more or less identical to the English versions, but devolution dictates that this is now managed by Natural Resources Wales (NRW).

Essential resource for anyone in Scotland who needs to apply for, comply with or revoke an authorisation made under the Environmental Authorisations (Scotland) Regulations 2018. This will cover the use of sealed radioactive sources, unsealed radioactive materials and the accumulation and disposal of radioactive waste. You may notice that this scheme is similar to that run under the Radioactive Substances Act 1993 (RSA93).

If you are having fun using the Pollution Inventory Electronic Data Capture System (PIEDC) to submit annual radioactive waste returns, then this guidance document is well worth a read :)

Essential resource for anyone in England who needs to apply for, comply with or revoke a permit made under the Environmental Permitting (England & Wales) Regulations 2016. This will cover the use of sealed radioactive sources, unsealed radioactive materials and the accumulation and disposal of radioactive waste.