In-Core Guide Tube Repairs

A0095

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.

Sub-products

A0107

Bottom Mounted Instrumentation nozzle plugging

A0106

In-core maintenance tools and consumables

A0104

POLAIR: all in one tool for in-core instrumentation maintenance (dose reduction)

A0100

In-core detectors maintenance risk mitigation : DISVP

A0099

Thimble tube brushing machine and extension cleaning brush

a0099-p-us-g-en-665-03-18-thimble-tube-cleaning-machine

A0098

Thimble tube cutting device

a0098-p-us-g-en-661-03-18-thimble-tube-cutter

A0097

Brushing machine for in-core instrumentation sensor drive cables

A0096

Grinding of in-core instrumentation nozzles

Related solutions

Outage services

You can prevent risk of technical issues causing delays and drift of outage costs by relying on experienced teams with a wealth of expertise. Framatome’s highly-skilled teams deploy proven, innovative technologies and solutions backed by service-proven knowledge of utilities’ objectives for reactor maintenance, inspections, fuel reloading operations, and outage management optimization. Our solutions ensure our customers avoid costly outages and outage extensions.

aging cables containment control rods corrosion decontamination engineering services fuel (un)loading/storage hot workshop incore/excore inspection/nde loose part main component maintenance modernization/upgrade monitoring & diagnostics qualification/testing reactor cavity repair replacement RPV spent fuel steam generators training valves/actuators welding