ACR Technology for CANDU® Enhancements
International Conference on the Future of Heavy Water Reactors - 2011 October 02-05

Presented at:
International Conference on the Future of Heavy Water Reactors
2011 October 02-05
Ottawa, Canada
Session Title:
HWR Technology

Stephen Yu (CANDU Energy)
Ranjit Singh (CANDU Energy)


The ACR-1000® design retains many essential features of the original CANDU plant design. As well as further-enhanced safety, the design also focuses on operability and maintainability, drawing on valuable customer input and OPEX. The engineering development of the ACR-1000 design has been accompanied by a research and confirmatory testing program. This program has extended the database of knowledge on the CANDU design.

The ACR-1000 design has been reviewed by the Canadian regulator, the Canadian Nuclear Safety Commission (CNSC) which concluded that there are no fundamental barriers to licensing the ACR-1000 design in Canada after completing three phases of the pre-project design review. The generic PSAR for the ACR-1000 design was completed in September 2009. The PSAR contains the ACR-1000 design details, the safety and design methodology, and the safety analysis that demonstrate the ACR-1000 safety case and compliance with Canadian and international regulatory requirements and expectations.

The ACR technology developed during the ACR-1000 Engineering Program and the supporting development testing has had a major impact beyond the ACR program itself:

  • Improved CANDU components and systems;
  • Enhanced engineering processes and engineering tools, which lead to better product quality, and better project efficiency; and
  • Improved operational performance

This paper provides a summary of technology arising from the ACR program that has been incorporated into new CANDU designs such as the EC6®, or can be applied for servicing operating CANDU reactors.

Individual Conference-Paper Copies (Electronic Where Available):

  • For CNS members, the first 5 copies per calendar year are free, and additional copies are $10 each.
  • For non-members, the price is $25 for the first Conference-paper copy in a request, and $10 each for additional copies of papers in the same conference and in the same request.
  • Contact the CNS office to order reprints.