Reference No: A0095

In-Core Guide Tube Repairs

The control rod guide tube is a safety component which ensures timely control rod drop. Wear may occur on the guide plates, in which case guide tube replacement is required. Framatome offers solutions for guide tube removal and replacement. Our customers can choose to replace a guide tube either with a new tube or with a refurbished tube. Two guide tubes can also be switched. The work is performed underwater during a normal outage while the upper internals are on their stand. The operators work from the refuel bridge or an auxiliary platform.

  • Challenge solving benefit Challenge solving benefit
  • Operator competitiveness benefit Operator competitiveness benefit
  • Safety excellence benefit Safety excellence benefit
  • Efficiency of operation benefit Efficiency of operation benefit
  • Expertise benefit Expertise benefit
  • Challenge solving benefit
  • Safety excellence benefit


Bottom Mounted Instrumentation nozzle plugging
Brushing machine for in-core instrumentation sensor drive cables
Grinding of in-core instrumentation nozzles
In-core detectors maintenance risk mitigation : DISVP
In-core maintenance tools and consumables
POLAIR: all in one tool for in-core instrumentation maintenance (dose reduction)
Thimble tube brushing machine and extension cleaning brush
Thimble tube cutting device