Language selection


Physical design

The physical design safety and control area covers activities such as design, fabrication, installation, modification, repair, replacement, examination, and testing of structures, systems and components (SSCs) in nuclear facilities. CNSC staff review the physical design of SSCs and any design modification to verify that the design complies with the applicable codes, standards and regulations.

This SCA includes a comprehensive design program being implemented and maintained by the licensee of each nuclear power plant. The design program includes sub-programs of pressure boundary, civil structures, safety systems, fuel, nuclear core, electrical power systems, and instrument and control systems to ensure that SSCs that are important to safety and security, and any modifications to them, continue to meet their design bases given new information arising over time and taking changes in the external environment into account.

The design program also includes sub-programs to address environmental qualification (EQ) and seismic qualification (SQ). The EQ program ensures that all required equipment in a nuclear facility is qualified to perform its safety functions if exposed to harsh environmental conditions resulting from design basis accidents. The SQ program ensures that all seismically-credited SSCs are designed, installed and maintained to perform their safety function during and/or after an earthquake event.

In support of regulatory decisions regarding physical design activities, in this category you will find research and technical information about structural integrity of SSCs, robustness of containment, fire protection approach, seismic design and qualification, CANDU safety design, fuel design, nuclear core design, failure analysis, instrumentation and control, environmental qualification, and so on.

Research and support program

Technical papers and abstracts


Health studies


Page details

Date modified: