A scheduled major overhaul with modernization elements has begun at the first power unit of the Smolensk NPP. The work started after the unit was taken out of service according to the schedule and is aimed at extending the equipment's service life and increasing its reliability.
In the reactor compartment, specialists have begun the fourth stage of work on managing the core's resource characteristics. During this industry-unique operation, engineers are restoring the reactor's graphite masonry – a key element whose condition determines the safe and stable operation of the unit. After this stage is completed, the core's service life will be extended without reducing operational parameters.
In the turbine hall, power engineers replaced the stator of the first turbogenerator – one of the most technically complex and critical parts of the electrical machine. The installation of the new assembly required high precision and adherence to special technological procedures.
In parallel, the impulse-safety valves of the intermediate steam superheating system were modernized. The updated fittings will provide more reliable protection for the turbine unit from pressure drops and improve the thermal efficiency of the unit.
After the repair and comprehensive tests are completed, the power unit will be returned to operation with updated technical characteristics. The scheduled repair is proceeding as planned, without deviations from the schedule.
