EC-6 (Enhanced Candu) meaning

In legal and commercial practice for nuclear projects, EC‑6 (Enhanced CANDU) denotes a specific vendor reactor design: a 700 mwe‑class, heavy‑water moderated and heavy‑water cooled pressure‑tube reactor capable of operating on natural uranium fuel. The expression is not defined in legislation or case law; it is a descriptive technical term used in vendor proposals, EPC and fuel‑cycle contracts, and in planning, licensing and regulatory submissions. heavy water (D2O) acts as an efficient neutron moderator, slowing fission neutrons and enabling the CANDU design’s use of natural uranium—distinctive among commercial reactors. The EC‑6 can also use alternative fuels, including recovered uranium from reprocessed light‑water reactor fuel, low‑enriched uranium, plutonium mixed‑oxide (MOX), thorium and certain actinides. Legal significance: an EC‑6 project in Great Britain would require a nuclear site licence under the Nuclear Installations Act 1965, Office for Nuclear Regulation permissions (safety, security and safeguards), environmental permits, radioactive waste and transport consents, and robust decommissioning and liability arrangements. Fuel choices may alter safeguards obligations, waste classification and export controls. Usage is consistent across England & Wales, Scotland and Northern Ireland, though policy on new nuclear differs; in Ireland, nuclear electricity generation is not permitted under current legislation.