Design Features of the Fuel Channel to be Used in the Retubing of Pickering 3 and 4

Abstract

Increasing deuterium levels in pressure tubes, axial bearing limits and system planning constraints have necessitated the re-tubing of Pickering Units 3 and 4. The fuel channel is the key component to be replaced. Design changes which were introduced were done to primarily improve installability and reduce installation time. In addition however, some design changes were also made to incorporate improved features without jeopardizing the schedule.