CSA N294:09 (R2019)

Preface This is the first edition of CSA N294, Decommissioning of facilities containing nuclear substances. This Standard was developed in response to a need for direction on decommissioning consistent with Canadian and international recommendations. It incorporates current best practices and existing regulatory requirements. This Standard also draws on the decommissioning experience of the Canadian nuclear industry. Scope 1.1 This Standard applies to the decommissioning of licensed facilities and other locations where nuclear substances are managed, possessed, or stored. Notes: (1) Users are responsible for determining the extent to which this Standard applies to a given facility or location and for consulting the associated regulatory requirements. (2) Annexes E, F, and G contain recommended approaches for the decommissioning of mine waste rock and mill tailings, complex sites, and small facilities other than Class I or II, respectively. 1.2 This Standard does not apply to the decommissioning of facilities or equipment involving only (a) naturally occurring radioactive material (NORM); (b) technologically enhanced, naturally occurring radioactive material (TENORM); or (c) radiation-emitting devices, including those consumer and medical devices regulated under the Radiation Emitting Devices Act and similar industrial radiation-emitting devices regulated by the provinces. Note: This Standard provides guidance that might be useful for facilities covering the materials and equipment specified in this Clause. 1.3 In CSA Standards, "shall" is used to express a requirement, i.e., a provision that the user is obliged to satisfy in order to comply with the standard; "should" is used to express a recommendation or that which is advised but not required; "may" is used to express an option or that which is permissible within the limits of the standard; and "can" is used to express possibility or capability. Notes accompanying clauses do not include requirements or alternative requirements; the purpose of a note accompanying a clause is to separate from the text explanatory or informative material. Notes to tables and figures are considered part of the table or figure and may be written as requirements. Annexes are designated normative (mandatory) or informative (non-mandatory) to define their application.