Solution for secondary circuit of NPP
We offer the delivery of a new or modernized system for controlling the secondary circuit technologies of a nuclear unit (I&C NO). The system complies with current legislative requirements in terms of ensuring nuclear safety, operational reliability, and operator and maintenance convenience. It also meets strict qualification requirements.
It provides control and information functions, enabling the collection of all operational and diagnostic data from connected measuring circuits, actuators, and other devices. It is implemented on the SandRA platform using Z100 and Z200 hardware components. It performs safety functions of categories A, B, and C according to ČSN EN 61226. It is communicatively integrated with the Unit Control and Information System (UCIS).
The system processes and verifies data, enables online diagnostics, and performs periodic testing of device functions. The data is subsequently transferred to the unit diagnostic and information system.
Individual parts of the system are part of the third, second, and first lines of defense-in-depth.
The secondary circuit control system supplied by ZAT a.s. currently ensures reliable and safe control of the primary circuit technology of the VVER440-type reactor. At the same time, we are ready to apply the system to other VVER power outputs and various types of large and small reactors, based on specific requirements.
Other solutions for secondary circuit
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