DECON meaning

DECON describes an “immediate dismantling” approach to nuclear decommissioning: contaminated plant, equipment, structures and affected areas of the site are promptly dismantled and removed, and remaining materials are decontaminated so the site can be released for unrestricted use. The term is industry shorthand (originating with US practice) rather than a defined term in UK or Irish legislation, but it is widely used in strategies, contracts and regulatory submissions. Key features include early post‑shutdown dismantling; characterisation and segregation of radioactive materials; consignment of low‑level radioactive waste to licensed/permitted disposal routes (for example, the UK Low Level Waste Repository or other authorised facilities); and decontamination to clearance levels that support delicensing and environmental permit surrender, alongside remediation to achieve the agreed end state. Usage is broadly consistent across England & Wales, Scotland, Northern Ireland and Ireland. In the UK, oversight typically involves the Office for Nuclear Regulation and the relevant environmental regulator (Environment Agency, SEPA, NRW or NIEA), with the Nuclear Decommissioning Authority setting strategy for civil sites. In Ireland, the Environmental Protection Agency regulates radioactive substances; while there are no nuclear power stations, DECON principles may apply to facilities using radioactive materials. Practically, DECON is chosen to secure earlier hazard reduction and site...