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Consists of CSA N290.0:26, General requirements for safety systems of nuclear power plants and CSA N290.1:24, Requirements for the shutdown systems of nuclear power plants
This Standard applies to the design, qualification, installation, operation, maintenance, inspection, and documentation of the safety systems for new and existing water-cooled nuclear power plants. Note: This Standard also applies to safety support systems as they relate to the safety systems covered by this Standard.
This Standard provides the general requirements for safety systems. This Standard is a companion document used in concert with CSA N290.1, CSA N290.2, and CSA N290.3, which outline system-specific requirements.
In this Standard, "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; and "may" is used to express an option or that which is permissible within the limits of the Standard. 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. -------------------------------------------------------------------------------------------------------------------------------- CSA N290.1:24 - Requirements for the shutdown systems of nuclear power plants Preface This is the third edition of CSA N290.1, Requirements for the shutdown systems of nuclear power plants . It supersedes the previous editions published in 2013 and 1980. Changes to this edition include the following
This Standard is one of a series of standards on reactor control systems, safety systems, and instrumentation for nuclear power plants. CSA N290.0 provides the general requirements for safety systems. CSA N290.0 is a companion document that outlines system-specific requirements and is used in concert with CSA N290.2, CSA N290.3, and this Standard. The CSA N-Series Standards provides an interlinked set of requirements for the management of nuclear facilities and activities. CSA N286 provides overall direction to management to develop and implement sound management practices and controls, while the other CSA Group Nuclear Standards provide technical requirements and guidance that support the management system. This Standard works in harmony with CSA N286 and does not duplicate the generic requirements of CSA N286; however, it might provide more specific direction for those requirements. Users of this Standard are reminded that the site selection, design, manufacture, construction, installation, commissioning, operation, and decommissioning of nuclear facilities in Canada are subject to the Nuclear Safety and Control Act and its Regulations. This Standard was prepared by the Subcommittee on Requirements for the Shutdown Systems of Nuclear Power Plants, under the jurisdiction of the Technical Committee on Reactor Control Systems, Safety Systems, Instrumentation for Nuclear Power Plants and the Strategic Steering Committee on Nuclear Standards, and has been formally approved by the Technical Committee
This Standard applies to the design, procurement, installation, commissioning, operation, testing, and maintenance requirements of reactor shutdown systems (SDSs), based on insertion of a neutron-absorbent material in the core, for existing and new water-cooled nuclear power plants (NPPs).
Notes:
This Standard is written as a companion document to CSA N290.0, which provides general requirements for the NPP safety systems, including the reactor SDS. This Standard and its companion CSA N290.0 provide the requirements for the reactor SDS.
This Standard uses the term SDS, which includes the following functions: detection, trip, actuation, and means of shutdown (MSD).
This Standard does not apply to
In this Standard, "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; and "may" is used to express an option or that which is permissible within the limits of the Standard. 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.
| SDO | CSA: Canadian Standards Association |
| Document Number | |
| Publication Date | Jan. 1, 2026 |
| Language | en - English |
| Page Count | 77 |
| Revision Level | |
| Supercedes | |
| Committee |