The project aimed to rehabilitate a critical section of the fire main network at the Tihange Nuclear Power Plant without excavation or interruption of plant operations.
Due to the pipeline's location beneath an active high-voltage transformer and the requirement for continuous internal pressure, a trenchless solution was essential to ensure safety and reliability.
| Medium | Diameter | Pipe material | Repair Length | Pipe Conditions | Rehabilitation Method |
| Fire main water | DN 300 mm (11.8") | steel | 300 meters (984 feet) | DN300 steel fire main with active leakage, located beneath an operating 380 kV transformer, requiring continuous pressurization and no access for excavation. | TUBETEX W |
Critical fire protection pipeline essential for nuclear plant safety
Leakage located under an active 380 kV transformer
Transformer could not be shut down
No access permitted to the area during operation
Fire main network had to remain under pressure at all times
Excavation was not possible
High safety and reliability requirements
Technology: CIPP (Cured-In-Place Pipe)
Product: TUBETEX W
NordiTube proposed a trenchless rehabilitation solution using the TUBETEX CIPP liner, allowing the damaged fire main pipe to be repaired without excavation and without interrupting plant operations.
The TUBETEX liner was selected because it:
Withstands internal pressure
Can navigate pipe bends
Meets strict industrial and safety requirements
Successful rehabilitation of a critical fire main pipeline
No excavation required
No interruption to power plant operations
Maintained continuous internal pressure
Safe rehabilitation under an active high-voltage transformer
Long-term structural integrity restored
Demonstrated reliability of TUBETEX CIPP technology in high-risk industrial environments
