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Controlled Ageing and Plant Life Management

Investments in nuclear energy can be valorized only by the subsequent efficient long-term operation. Plant Life Management (PLiM) therefore represents a very sophisticated system of care for complex technologies of various types.

Our services are focused on the implementation of the VVER-type NPP life cycle management program to ensure long-term operation beyond the original design lifetime. We implement the projects for operators in our and foreign markets with regard to the documentation of the power plants and valid legislation (in the country of the operator as well as the European ones).

We deal with the aging management problem and extend the lifetime of the equipment over the long term, provide the aging management of specific devices and we are the author of a number of certified programs and methodologies. In projects with a link to management and lifetime assessment, we represent the Czech Republic in the international organizations of the IAEA, NEA - OECD and the EU.

Areas of program implementation include, in particular, the maintenance of a database of Design Bases, controlled aging programs and operational controls, an assessment of the risk assessment of pressures due to thermal shock and thermohydraulic analyses.

Our Services

  • Design Bases – Replenishing, maintaining and updating the database
  • Creation of evidence-based documentation in accordance with the required normative technical documentation (NTD)
  • Assessment of device strength and lifetime including device condition prediction for dominant degradation mechanisms
  • Equipment qualification
  • Computations of the device response to operating conditions using the finite element method (statics, heat conduction, fracture mechanics, dynamics including seismicity and rapid processes such as swirling of torn pipeline systems)
  • Editing and design of management programs (lifetime management program, controlled aging programs)
  • Assesment of risks caused by pressure-thermal shocks
  • Thermohydraulic analysis for strength analyses
  • Design of supporting database applications
  • Implementation of technical and economic studies of energy equipment
  • Construction and production of necessary experimental devices

Our laboratories

  • For environmental qualification
  • Cobalt irradiators
  • Monitoring properties and characteristics of equipment materials


  • Instron universal blasting machines
    Shuttle hammers
  • Instrument hardness tests
  • Measurement of dimensions
  • Microscopic analysis of broken bodies.


  • Autoclaves for evaluation of materials under operating conditions
  • Light scanning electron microscopes
  • Hot and semi-hot cells for the evaluation of the properties of irradiated / radioactive materials



Division of Integrity and Engineering Engineering

  • Address:  ÚJV Řež, a. s., Hlavní 130, Řež, 250 68 Husinec, Czech Republic
  • Phone: +420 266 173 670
  • Fax: +420 220 940 519
  • E-mail:
Our services include legislative and operational support for all phases of the construction, operation and decommissioning of nuclear facilities. Our partners are investors, operators and state supervisors.