REACTOR:
Maintenance service
- Disassembly and assembly of auxiliary elements
- Reactor vessel opening and closing
- Reactor internals removal
Repair service
- Replacement of guide tube pins in the lower internals
- Repair of studs and threaded holes
- Inspection, cleaning and repair of reactor vessel and reactor vessel head flanges
- Cutting and Welding
Other activities
- Extraction of irradiated samples
- Replacement of guide tubes
- Visual inspection of the vessel and internals
- Foreign object search and retrieval
- Tooling and equipment maintenance (bolt tensioning and threading, flange cleaning, etc.)
STEAM GENERATORS AND PRESSURIZER:
Maintenance service
- Opening and closing of manholes
- Inspection, opening and closing of the pressurizer
- Gaskets replacement
- Bolts tensioning
Repair service
- Removal of seized bolts and installation of helicoils
- Flange machining and repair
- Tube plugging (expanded and welded)
- Assembly of Nozzle Dams
Other activities
- Pressurizer heaters replacement
- Primary and secondary side inspection
- Steam generator sludge lancing
- Measurement of bolt elongation by UT
MAIN PUMPS:
- Assembly and disassembly of reactor coolant pumps and motors.
- Inspection and cleaning of components (seals, bearings, thermal barrier).
- Overhaul of associated equipment (oil lift pump, exchangers, instrumentation, etc.)
- Overhaul and change of seals.
- Overhaul of pump and motor bearings (radial and thrust).
- On-site component repair and machining.
- Inspection, cleaning and repair of bolts and housings.
FUEL:
New and spent fuel handling.
Drive shaft assembly coupling and decoupling.
Fuel inserts handling (rod control cluster assemblies, thimble plugs, burnable poisons).
Refuelling equipment check-up:
- Handling and fuel crane.
- Fuel transfer system.
- Associated tools (drive shaft assembly coupling, inserts handling.)
Fuel inspection:
- Leak detection by sipping and UT
- Visual inspection of fuel assemblies.
Fuel repair:
- Repair (MFRS and RTN).
- Fuel reconstruction.
- Ultrasonic fuel cleaning.
FUEL CASKS MANAGEMENT:
Container loading (ENSA-ENWESA Group):
- Handling of the casks before loading.
- Loading of spent fuel into casks.
- Closing of the cask, draining and drying process.
- Leak test.
- Cask handling and transport to temporary storage.
SPECIAL REPAIR AND OTHER ACTIVITIES:
System modifications:
- Cutting, machining and welding of equipment and systems.
- Replacement of piping.
- Design modifications.
Collaboration with ENSA:
- Laboratories (metallurgical, mechanical testing, welding, metrology, instrumentation and robotics).
- Calculation, design and development engineering.
Decommissioning activities:
Radiation protection supervision.
Welding:
- TIG, MIG and SMAW welding processes.
- Approved welding procedures.
- Qualified welders.
- Heat treatment equipment.
- Non-destructive testing and visual inspection levels 2 and 3.
Special interventions:
- Repairs and welding in Nuclear Power Plants.
