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Ontario Power Generation (OPG) is Ontario-based Electricity Company responsible for generation and sale of electricity in Ontario, utilizing hydroelectric, thermal, and nuclear generating stations [1]. Safety is the number one priority for the nuclear power generation process including nuclear waste management. The Nuclear Waste Management Division (NWMD) at OPG is responsible for the short and long term handling and storage of low and intermediate level waste, as well as spent nuclear fuel. In order to store nuclear waste and consumed ion exchange resins, NWMD has designed special Stainless Steel Resin Liner Containers (SSRLs), Figure 1. For all lifting and stacking scenarios over the container’s service life, a factor of safety against yielding of 3 is required. NWMD desired to investigate the waste container components including container walls, square welds joining the container body, and the top ring fillet welds that currently do no meet the proposed safety requirement and determine the best cours of corrective action for any areas not having a sufficient factor of safety.
Michael Benoit, a 2nd year Mechanical Engineering co-op student from the University of Waterloo, was asked to determine the stress at points of concern on the container and evaluate corrective actions for points which do not have the necessary factor of safety [2].
Figure 1 - Stainless steel resin liner container [2]
The teaching objective for this case study is force analysis of structures and structural components, equilibrium of deformable bodies, stress and strain concepts.
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Contact Waterloo Cases in Design Engineering
Steve Lambert
Tel: (519) 888-4728
Email: steve@uwaterloo.ca
The University of Waterloo acknowledges that much of our work takes place on the traditional territory of the Neutral, Anishinaabeg, and Haudenosaunee peoples. Our main campus is situated on the Haldimand Tract, the land granted to the Six Nations that includes six miles on each side of the Grand River. Our active work toward reconciliation takes place across our campuses through research, learning, teaching, and community building, and is co-ordinated within the Office of Indigenous Relations.