Izvestia Vysshikh Uchebnykh Zawedeniy. Yadernaya Energetika

The peer-reviewed scientific and technology journal. ISSN: 0204-3327

A new generation information controlling system for refueling machine

10/02/2017 2017 - #03 Modelling processes at nuclear facilities

Korobkin V.V. Povarov V.P.

DOI: https://doi.org/10.26583/npe.2017.3.09

UDC: 681.513.2

Largely, the development of the new fuel handling and refueling complex at unit № 1 of Novovoronezh NPP II is specific in the thorough integration of the information controlling system (ICS) and the refueling machine (RM) electrical equipment package into a single complex. The structure of the multilevel multiprocessor and multinetwork ICS provides for a high fail and functional safety and meets the single failure principle even during operation in a single channel mode. The RM control during refueling involves the human operator who is supported by an intellectual interface. The operator decides on particular control actions for the RM and the complex as the whole, monitors the control process and makes decisions on prevention of abnormal and emergency situations.

New information technologies make it possible to use a combination of modern means and methods of collecting information to obtain new quality information about the state of an objects or process, algorithms for processing this information, and making decisions on managing the RM on this basis.

Essentially, the ICS is a distributed system which implements the entire control cycle and contains information, processing and controlling portions. The communication devices in each portion are responsible for the exchange of data among components through a complete graph or via a shared bus.

The development result is the RM ICS of a new generation which differs from its current counterparts in innovative procedural, algorithm, hardware/software and process design solutions leading to a shorter time and increased safety of nuclear fuel handling operations at a VVER type reactor. Simultaneously, the RM ICS introduction improves the unit’s capacity factor by about 1.66% which ensures the output and supply to consumers of extra electricity.

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information controlling system nuclear plant functional safety nuclear fuel refueling machine decentralization of control functions single failure human factor