Building a Next-Generation Nuclear Fuel Transporter

About The Project

In more than a decade working with Ontario Power Generation (OPG), MEDATech has upgraded as well as designed and implemented a maintenance plan for OPG’s Dry Storage Container (DSC) transporters. We recently delivered a new DSC transporter, completely built in house, that includes upgrades to improve steering, visibility, lift precision, and emissions performance.

Project background

OPG operates a fleet of DSC transporters to move spent nuclear fuel to storage facilities. Starting in 2019, MEDATech refurbished a number of them, including LT series transporters, as well as the TOR (a truck-style transporter). We were also asked to develop a comprehensive maintenance plan that would keep transporters in good working order and in compliance with stringent industry regulations. 

When OPG needed an additional transporter that maintained operator familiarity while resolving long-standing design limitations, they reached out to MEDATech for the complete build.

Challenges

Match existing performance. The new machine needed to operate exactly like existing LT series machines so that operators could switch between an existing transporter and a new one without needing to learn a new set of controls.

Address known issues. Steering, operator visibility, and lift consistency had been identified as problem areas to improve in the new build.

Control cost and scheduling. One important goal was to complete a new build at a reasonable cost, on a limited timeline.

Solution

Steering system Legacy units featured a single-cylinder steering system that would often bind under load. We added a second steer cylinder and redesigned the system to eliminate binding and improve handling.

Camera and visibility package Since operator visibility is limited due to the transporter’s height, MEDATech added high-definition front, rear and side cameras, providing full-coverage sightlines and an enlarged field of vision.

Tier 4 diesel engine A Tier 4-compliant diesel engine offers reduced emissions, while delivering power output similar to that of older pre-tier models.

Even-lift cylinder system MEDATech introduced a new even-lift control system using three smart cylinders with linear encoders. The closed-loop system keeps loads levelled automatically, without the need for drift and manual adjustments required on legacy units.

Results

The new transporter meets all performance requirements while delivering improved lift control, visibility, steering, and emissions compliance. Despite a few schedule impacts, the build was completed on on-time and on budget.  Commissioning is underway and OPG is considering upgrades to their four existing units to match the new standard.