EAJWG (Emergency Arrangements Joint Working
group) describes an operator‑convened forum used in nuclear practice to plan, coordinate and review a site’s nuclear emergency arrangements and their interface with off‑site responders. It is not defined in legislation or case law; rather, it is a sector term used to support compliance and effective governance.
In Great Britain, an EAJWG typically helps a nuclear site licensee meet duties under Licence Condition 11 (Emergency arrangements) and the Radiation (Emergency Preparedness and Public Information) Regulations 2019 (REPPIR 2019), including cooperation with local authorities and emergency services, maintenance of the site emergency plan, public information, and exercising. In Northern Ireland, the same approach aligns with REPPIR (Northern Ireland) 2019. In Ireland, usage is broadly similar, supporting the operator’s role within the State’s radiological emergency planning framework and national plans. Across these jurisdictions, the term’s practical meaning is consistent.
Key features usually include cross‑functional membership (emergency planning, operations, safety, security, communications and legal/compliance), routine liaison with off‑site planning groups, review of hazard and consequence assessments, exercise planning and lessons‑learned oversight. Practically, the EAJWG provides a documented governance mechanism (terms of reference, minutes and action tracking) that demonstrates cooperation, readiness and continuous improvement to the regulator (e.g. ONR/HSENI) and other...