During the hot functional test, specialists check the operability of the power unit main equipment for meeting the design documentation requirements, including compliance with operation safety standards.
All main and auxiliary equipment and the reactor plant systems are tested at the following operating parameters:
- the primary circuit temperature reaches 280 °C
- while the pressure reaches 160 atmospheres (more than 165.3 kgf /cm2)
- The stage of the hot functional test checks operation of the main and auxiliary equipment of the unit, the reactor plant systems in the design operating modes, except for nuclear fuel loading, steam supply to the turbine and power output into the grid
- This stage aims primarily to confirm the equipment and systems’ readiness for the power start-up stage and the unit safe operation during all 60 years of the design service life