In CANDU reactors inlet feeder pipes carry cooling water from the inlet header to each fuel channel. Outlet feeder pipes then carry heated water from each channel to the outlet header and onto the steam generator. The feeder pipes are an essential component of the Primary Heat Transport System (PHTS) and their integrity is of paramount importance to the safe and efficient operation of the reactor.

Feeder inspections provide essential information to operators and regulators about the remaining wall thickness of the feeders and about the development of any flaws, enabling them to ensure their integrity. These challenging inspections are an essential component of ongoing safe reactor operation.

Each CANDU contains hundreds of feeder pipes, which are located in close proximity to each other in a feeder cabinet where radiation fields are high. To properly inspect feeders, remote or semi-remote tooling must be used to navigate within the physically restrictive operating environment in the feeder cabinet, and then that tooling must accurately deploy sensitive non-destructive evaluation tools to assess the condition of components and detect both flaws and pipe thickness.

We offer a suite of feeder inspection tools that are used during outage execution including the Feeder Scanner System, Feeder Visual Inspection System (FVIS), the 6-pack ultrasonic probe and the Grayloc Area Inspection Tool (GAIT).

Why Us?

  • Better, Faster, Cheaper

    Our tools allow you to get more accurate results while spending less time acquiring those results and their overall lifecycle costs give you the lowest cost option for getting the work done.

  • Maintaining Critical Path

    Faster inspections help reduce outage durations, allowing for a faster return-to-service for the reactor. Reliable tooling ensures everything goes to plan.

  • Complete Fitness-For-Service Solutions

    You can buy the toolset, buy the toolset and have us service it for you, or you can get us to do the inspection. We also analyze the results and provide details on the fitness-for-service and anticipated service life providing a complete fitness-for-service solution.

  • Dose Reduction

    Remote feeder inspection tooling promotes ALARA by maximizing distance and minimizing time in the feeder cabinets. The easy quick deployment and speed of data collection of our automated tooling further reduce the exposure of the support team.