Nuclear power plant equipment
Valve actuators, pump units and filter-ventilation systems for nuclear power plants.
Functional characteristics
Functional characteristics of NPP shut-off-valve actuators, pump units and filter-ventilation units per DSTU 2773-94, SOU-N EE 20.302:2020 and SOU NAEK 100:2022.
Insulation resistance and dielectric strength
Insulation-resistance measurement and dielectric-strength testing of circuits to frame and between circuits per DSTU 4178-2003 and SOU-N EE 20.302:2020.
Torque and thrust force
Rated torque, maximum (breaking) and thrust force, full stroke and actuator operating time per DSTU 2773-94 and SOU-N EE 20.302:2020.
Pneumatic-drive tightness
Tightness of detachable joints and piston seals, and strength/tightness of parts under pressure per DSTU 2773-94 and GOST 30635-99.
Seismic resistance (SOU NAEK 100:2022)
Seismic-resistance testing per DSTU 6098:2009, DSTU EN 60068-2-57:2022 and SOU NAEK 100:2022 (severity levels 1–5) — operability confirmation under seismic events.
Operability at −50…+65 °C and salt-mist exposure
Equipment operability at −50…+65 °C per DSTU 8280:2015 and salt-mist exposure testing per DSTU IEC 60068-2-52.