At the end of July, the standard testing of an ShDS-2 discrete signals cabinet and an ShKr-21 cross cabinet was carried out at the site of PJSC “SRPA “Impulse”.

Functions of ShDS:

  • shaping signals of control and monitoring of state of actuators of shut-off, air-operated isolating, regulating valves and electric motors;
  • shaping discrete output signals to adjacent systems;
  • inputting discrete signals from adjacent systems.

ShDS discrete signals cabinets can be used in pairs to increase reliability with the redundancy (backup).

A ShKr cross cabinet is used for quick and reliable connection of circuits of two mutually redundant ShDS cabinets to circuits of actuators.

Representatives of State Scientific and Technical Center for Nuclear and Radiation Safety, ZNPP, LLC “Testing Laboratory “EUTEST”, and PJSC “SRPA “Impulse” took part in the testing.

The commission has considered the submitted testing materials in a complete scope, as well as performed additional experimental testing.

The positive results of the carried out testing of ShDS-2 and ShKr-21 confirmed that this equipment meets the design and technological documentation, the requirements of the normative documents, including SOU NAEK 100:2016.

SRPA “Impulse” is a leading Ukrainian designer, manufacturer, and supplier of highly-reliable instrumentation and control systems for nuclear power engineering and railways.
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