Company Structure and Staff Print

The enterprise has a well-developed and effective infrastructure, which provides for the entire production process: from the designing, fabrication and testing of products to their complete delivery to customers with subsequent maintenance during the entire life cecle.

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Design Division

The Design Division performs system-level development of various type reactor plants and their main components, develops design documentation.

Design divisions perform:

  • Development and multi-optional optimization of design solutions;
  • Computational analysis and justification of design solutions, characteristics and modes of operation;
  • Analysis and generalization of the running plants operating experience;
  • Field supervision of manufacture, installation and operation of the developed products;
  • Development and implementation of IT in the enterprise management processes.

 

Main departments of design division:

 

Development of NSSS components` layout and flow scheme

 

Development of reactor and reactor core mechanical designs  

Development of basic equipment:

  • Circulating pumps
  • Heat exchangers
  • Steam generators
  • Valves
  • Control and protection system actuators

Development of fuel handling and process equipment  

The Design Division is a big team of highly qualified experts: designers, mechanical engineers, physicists, heating engineers, metallurgists, electronic engineers, technologists, programmers. They widely use modern computers and efficient software including three-dimensional CAD-systems, which ensure the development of complex engineering systems and equipment with optimization of design solutions and thorough justification of operating parameters, characteristics and modes.

Department for Design Scientific and Technical Validation

 

To thoroughly analyze and scientifically and technically validate reliability and safety of developed equipment, systems and entire nuclear plants at the development stage, a special Department for Design Scientific and Technical Validation (DSTV Department) composed of several hundred highly-qualified specialists was established in JSC “Afrikantov OKBM”.

The DSTV Departments for:

  • Reactor physics
  • Thermohydraulics
  • Strength
  • Reliability
  • Safety
  • Dynamics

The history of the DSTV Department goes back to the 1950s when NPPs for the first nuclear-powered icebreaker and generation II submarines were being developed, which required self-sustained scientific and technical supervision of development and validation of unique special-purpose mechanical equipment designs. 
Industry-recognized schools of physics, thermal physics, thermotechnics, strength analysis and dynamics were established at OKBM at that time. 

The tasks of the DSTV Department include: 

  • Analysis and validation of neutronic characteristics, design and composition of reactor cores, effectiveness of reactivity control systems, neutron monitoring conditions and tools, and nuclear safety in normal operating conditions, design basis and beyond design basis accidents, including a postulated severe core meltdown accident, as well as development of programs and support of reactor core tests at test facilities and operating reactors;
  • Analysis of thermal physical characteristics of fuel assemblies and reactor cores in normal operating conditions and in accidents, optimization and validation of design solutions aimed at intensifying the exchange;
  • Analysis and validation of radiation protection performance in normal operating conditions and in accidents, analysis of dose rates during RP operation and handling of radioactive sources, analysis of radiological consequences of accidents including a postulated severe fuel meltdown accident, analysis and validation of localizing systems performance, and validation of nuclear object arrangement;
  • Analysis of RP dynamics in normal maneuvering modes, in case of equipment failures and outages, in design basis and beyond design basis accidents, including extreme postulated accidents, validation of automated reactor plant control algorithms, development of requirements for automation of adjacent systems and entire object, support of automation systems development and tests, development of reactor plant computer simulators and virtual power units.
  • Analysis and validation of strength of all reactor plant equipment and system elements accounting for relevant loads and operation modes, development of requirements for inspection and test methods, development of recommendations on design optimizations aimed at strength assurance, analysis of design behavior under vibration, impact and thermo cyclic loads, development of methods for predicting remaining life of equipment and respective technical tools;
  • Analysis of processes in the reactor and containment in accidents with primary system depressurization, analytical validation of reactor plant safety and emergency core cooling systems design and performance. 

The above objectives are achieved using a large complex of computer codes. The majority of these codes was developed in JSC “Afrikantov OKBM”, verified by the results of extensive benchmark and full-scale tests and operational databases, and certified according to the safety rules for the relevant range of parameters of developed reactor plants.

Industrial improved-estimation codes and CFD codes find expanding application in engineering practice. Best foreign codes were mastered and are widely used as alternative to analyze neutron physics, radiation protection, strength, thermal hydraulics and safety. 

The DSTV Department works in close cooperation with leading scientific institutions such as RRC “Kurchatov” Institute, IPPE, RAN IBRAE, VNIIEF, NIKIET, TsKTI and RAN IMash.

Production Facilities

 

The production facilities of JSC "Afrikantov OKBM" are provided with modern manufacturing equipment to ensure production of prototypes of the equipment under development, test facilities, individual types of equipmentfor the Russian fleet, nuclear power industry and non-nuclear general-purpose equipment.
The total area of production facilities equals 24764 m2, the manpower is over 900 workers. There are more than 530 units of technological equipment including 270 metal cutting machines, 20 press-forging plants, over 40 welding plants, over 30 units of heating and molding equipment.

Production sectors and operations performed:


Blanking operations:

  • plasma-arc and gas-plasma cutting of sheet blanks of stainless steel (thickness under 150 mm) and carbon steel (thickness under 200 mm):
  • bending of sheets up to 50 mm thick;
  • molding of blanks and intricate shapes of
    stainless-steel, heat-resistant steel, special alloys and bronze;
  • cutting of blanks from rolled stock and forgings up to 800 mm in diameter on the belt-cutting machines.


 

Machining operations:

  • machining of articles up to 6.3 m in diameter and 10m long on multi-purpose metal-working machines;
  • high-performance machining on lathes, vertical mills, turning/milling centers and NC machines;
  • fabrication of high-precision shapes on the spark-erosion wire-cutting and laser equipment;
  • fabrication of electric motor stators with a complex of electric engineering activities;
  • fabrication of electronic and electric equipment for industrial purposes;
  • long-hole drilling and boring of holes up to 250 mm in diameter and 4000 mm long;
  • fabrication of industrial rubber articles;
  • fabrication of gear wheels, gear shafts, and worm couples
 

 

Thermal treatment and protective coats

 

  • hermal treatment of parts and blanks in vacuum and protective gas atmosphere;
  • thermochemical treatment of parts: cementation, nitriding, aluminizing and chromizing with subsequent nitridation;
  • deposition of chemical coatings on metallic articles: phosphatizing, oxydation, galvanization, anodic treatment, silver plating, chemical
    passivization, chromium-wurtzite coating.

 

Welding operations:

  • manual arc welding with coated electrodes;
  • automatic and manual arc welding;
  • semiautomatic and automatic submerged-arc welding;
  • electron beam welding;
  • contact welding;
  • manual electric-arc deposition of sealing surfaces on valves;
  • vacuum soldering with silver-containing solders, soldering of Kovar to ceramics in a hydrogen environment.

 

 


Assembly operations:

  • assembly of heavy-weight equipment (up to 100 t) at special sections, on beds and building berths,
    providing high cleanliness of inner cavities. 

 

 Inspection operations:

  • non-destructive testing of welded joints and metal by physical methods (ultrasonic, radiation, capillary);
  • analysis of chemical composition and mechanical properties of materials, including intercrystalline corrosion tests;
  • hydraulic strength tests under pressure as high as 60 MPa;
  • vacuum tests for leak-tightness;  

The ongoing production complex restructuring and modernization program stipulates mastering
of new modern technologies, procurement of high-precision high-performance process equipment, introduction of modern inspection tools, and establishment of new production sectors.

Scientific Research and Testing Complex





The Scientific Research and Testing Complex (SRTC) is equipped with state-or-the-art experimental facilities and research installations and provides experimental investigations of neutronic, thermohydraulic, mechanical and lifetime characteristics, as well as representative tests, of the equipment under development. 

 Experimental facilities in the SRTC can be used for testing nuclear reactor core elements, high-pressure vessels, wide range of heat exchanging equipment including steam generators with steam parameters of up to 550 ºC and 16 MPa, pumps with the capacity of up to 20000 m3/h, gas circulators, all kinds of pipe valves, precise electromechanical equipment, actuators, manipulators and other mechanisms for nuclear power and other branches of industry.

Test activities:

  • control rod drives and fuel handling complexes;
  • valves and safety devices;
  • circulating pumps, related friction units and shaft seals;
  • heat exchangers and steam generators.

Research activities:

  • neutronic characteristics;
  • reactor core and steam generators thermal physics;
  • physical and chemical processes in NPP circuits;
  • static and dynamic strength of constructions;
  • diagnostics of machinery and structures.

The RTC also incorporates:
A Test Center accredited with the Certification Center GOST R (accreditation certificate No. ROSS.RU.0001.22.AC01 dated March 03, 1998) and with the Certification System for equipment, products and technologies used in nuclear plants, radiation sources and storage facilities (accreditation certificate No. RU.0001.01.AE 00.52.22.0002 dated November 15, 1999). The Test Center conducts certification tests.
A Certification Expert Center accredited with the Certification System for equipment, products and technologies used in nuclear plants, radiation sources and storage facilities (accreditation certificate No. ROSS RU.0001.01.AE 00.52.31.0003 dated November 15, 1999). The Certification Expert Center prepares experts' reports on the possibility of issuing a certificate of conformity.

 

BOOKLETS

  1. OKBM
  2. PRODUCTION COMPLEX
  3. RESEARCH TESTING COMPLEX