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CSA N287.6:22

Pre-operational proof and leakage rate testing requirements for concrete containment structures for nuclear power plants
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CSA N287.6:22

Pre-operational proof and leakage rate testing requirements for concrete containment structures for nuclear power plants

PUBLISH DATE 2022
CSA N287.6:22
Pre-operational proof and leakage rate testing requirements for concrete containment structures for nuclear power plants
Preface

This is the fifth edition of CSA N287.6, Pre-operational proof and leakage rate testing requirements for concrete containment structures for nuclear power plants. It supersedes the previous editions, published in 2011, 1994, 1980, and 1978. The major changes to this edition include the following

  • terminology was clarified by modifying definitions to align with common definitions and other nuclear standards;
  • personnel qualification requirements were added;
  • requirements for entry into containment were added;
  • requirements for leakage rate calculations and associated instrumentation were clarified;
  • documentation requirements were clarified;
  • alignment to N287.7 was improved; and
  • the requirements of Annex C were clarified. This Standard reflects Canadian regulatory requirements, the operating experience of the Canadian nuclear industry, and international practices. The Standard was originally written for CANDU® reactors but can be used for other concrete containment structures as applicable. Note: CANDU (CANada Deuterium Uranium) is a registered trademark of Atomic Energy of Canada Limited (AECL). The CSA N-Series Standards provide 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. This Standard specifies examination and testing requirements that will ensure that concrete containment structures are built using techniques and work practices that meet the quality and standards commensurate with the safety principles necessary to comply with the Canadian nuclear safety philosophy. This Standard is part of the CSA N287 series of Standards, which provides the requirements for concrete containment structures for nuclear power plants. These Standards were initiated in response to a recognition by the utilities and industries concerned with nuclear power plant structures in Canada of a need for consistent standards for the design, construction, and testing of concrete containment structures for nuclear power plants. The CSA N287 series of Standards consists of eight Standards. The objectives of each Standard are summarized as follows:
  • CSA N287.1, General requirements for concrete containment structures for nuclear power plants, specifies general requirements for the design, construction, testing, commissioning, and in-service examination and testing of concrete containment structures for nuclear power plants and is directed to the owners, designers, manufacturers, fabricators, and constructors;
  • CSA N287.2, Material requirements for concrete containment structures for nuclear power plants, specifies requirements for materials used for concrete containment structures;
  • CSA N287.3, Design requirements for concrete containment structures for nuclear power plants, specifies requirements for the design of concrete containment structures;
  • CSA N287.4, Construction, fabrication, and installation requirements for concrete containment structures for nuclear power plants, specifies construction, fabrication, and installation requirements for concrete containment structures for nuclear power plants;
  • CSA N287.5, Examination and testing requirements for concrete containment structures for nuclear power plants, specifies examination and testing requirements that apply to the work of any organization participating in the construction, fabrication, or installation of concrete containment structures for nuclear power plants;
  • CSA N287.6, Pre-operational proof and leakage rate testing requirements for concrete containment structures for nuclear power plants, specifies requirements for proof by demonstration, before first criticality, that the design and construction of a concrete containment structure are satisfactory with respect to quality and performance as demonstrated by achieving the specified requirements of CSA N287.6, including commissioning the leakage rate target;
  • CSA N287.7, In-service examination and testing requirements for concrete containment structures for nuclear power plants, specifies uniform requirements whereby, through systematic and periodic examination, the structural and leak-tight integrity of concrete containment structures can be assessed as demonstrated by achieving the specified requirements of CSA N287.7, including the operational leakage rate target; and
  • CSA N287.8, Aging management for concrete containment structures for nuclear power plants, provides aging management requirements for concrete containment structures for nuclear power plants and is directed to the owners/operators, designers, manufacturers, fabricators, and constructors. Users of this Standard are reminded that the design, manufacture, construction, commissioning, operation, and decommissioning of nuclear facilities in Canada are subject to the provisions of the Nuclear Safety and Control Act and Regulations.

The Canadian Nuclear Safety Commission might impose additional requirements to those specified in this Standard

Scope
1.1

This Standard specifies requirements for pre-operational proof testing (PPT) of concrete containment structures and integrated leakage rate testing (ILRT) of the containment boundary. Concrete containment structures includes the following structural and non-structural elements

  1. concrete
  2. reinforcement (pre-stressed and non-pre-stressed)
  3. steel (e.g., liner, embedded parts, anchors)
  4. non-metallic liners and coating systems
  5. joint sealants and water stops
  6. and elements necessary to support the containment structure (e.g., foundations)
1.2

The requirements for containment components are addressed in CSA N285.0. Containment components may be tested coincident with the containment structures as specified in this Standard.

1.3

This Standard is used in concert with the other CSA N287 series of Standards, as applicable.

1.4

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, 2022
Language en - English
Page Count
Revision Level
Supercedes
Committee
Publish Date Document Id Type View
Jan. 1, 2022 CSA N287.6:22 Revision
Jan. 1, 2011 N287.6-11 (R2021) Reaffirmation
Jan. 1, 2022 CSA N287.6:F22 Revision
Jan. 1, 2011 N287.6-F11 (C2021) Reaffirmation