REGDOC-2.5.4 - Design of Uranium Mines and Mills: Ventilation Systems, Version 1.1 (English, PDF)

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2026-05-06

REGDOC-2.5.4, Design of Uranium Mines and Mills: Ventilation Requirements, aims to help persons address the requirements for submitting ventilation-related information when applying for a CNSC licence to prepare a site for and construct, operate or decommission a uranium mine or mill. Provincial and territorial mining regulations for ventilation apply, unless exceeded by the requirements for nuclear safety noted in this document. This regulatory document is also intended to help applicants for a uranium mine or mill licence understand their operational and maintenance obligations for ventilation systems.

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