CSA - N285.0:23/N285.6 SERIES:23
General requirements for pressure-retaining systems and components in CANDU nuclear power plants/Material Standards for reactor components for CANDU nuclear power plants
| Organization: | CSA |
| Publication Date: | 1 January 2023 |
| Status: | active |
| Page Count: | 237 |
| ICS Code (Nuclear power plants. Safety): | 27.120.20 |
scope:
This Standard establishes requirements for pressure-retaining systems, components, and their supports over the service life of a CANDU NPP. The requirements of this Standard address
a) construction activities; and
b) in-service inspection, modification, repair, and replacement activities.
This Standard applies to all pressure-retaining systems, including their components and supports, in a CANDU NPP.
This Standard applies to containment components, but does not apply to containment structures which are covered in the CSA N287 Series of Standards.
This Standard does not apply to portable assemblies of pressurized items that are temporarily connected to a system or component to enable testing, venting, draining, calibration, or other maintenance activities, provided that they
a) do not reduce the ability of a system to perform its design safety function;
b) are under surveillance when connected and are removed upon completion of their function; and
c) are constructed to Standards deemed by the licensee to be suitable for the application.
Note: Safety analysis, environmental qualification programs, or seismic qualification may be used to satisfy the conditions in this Clause.
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 (nonmandatory) to define their application.
The values given in SI units are the units of record for the purposes of this Standard. The values given in parentheses are for information and comparison only. The units in this Standard may be converted in accordance with the ASME BPVC, Section III, NCA-1150.
Document History
