JSC Atomenergoprom Annual Report
JSC ATOMENERGOPROM / ANNUAL REPORT / 68
The Division has adopted unique technologies for mechanical assembly of equipment for the turbine is-
land with VVER-1200 reactors for Akkuyu NPP (Turkey).
The following technologies have been developed and introduced as part of project implementation:
Equipment manufacture for a low-speed steam turbine island for NPPs with VVER-1200 and VVER-TOI
reactors;
Equipment manufacture for a high-speed steam turbine island for NPPs with VVER-1000 and VVER-
1200 reactors, including unique technologies for the drilling of deep holes in MSR33, HPH34 and LPH35
vessels and for the press-fitting of heat exchange tubes into them;
Manufacture of MSRs with cross-fin tubes.
Technologies under development include: equipment manufacture for the turbine island for the pilot
BREST-OD-300 unit with a lead-cooled fast neutron reactor, as well as for the BN-1200 unit with a so-
dium-cooled fast neutron reactor, including unique technologies for the press-fitting of heat exchange
tubes into reactor vessels with a high-pressure liquid jet.
Overlay welding machine
The calculation that has helped to validate the 'leak-before-break' (LBB) concept by eliminating the inter-
mediate weld at the junction of the main coolant line (MCL) and the reactor coolant pump (RCP) has been
made. The application of this approach in design and the selection of materials ensures that a component
with a through-wall crack will not be completely destroyed. An existing stable leak in a component can be
detected well before the crack becomes critical in terms of instability.
The spherical body of the RCP is to be made with internal weld overlay cladding. The switch has been
necessitated by the introduction of requirements for the application of the LBB concept in Russian and
international scientific and technical documentation. Certification tests of steel have shown that its prop-
erties are highly stable: its impact strength and mechanical characteristics do not change significantly after
prolonged exposure and meet the relevant requirements.
For the weld cladding of the inner spherical surface of the RCP sphere body, an overlay welding machine
has been purchased. It was put into pilot operation at the end of 2022.
New pump type (RCP-1753)
Life tests (with a total duration of 5,000 hours) of the prototype of a new type of pump unit, RCP-1753,
developed using cutting-edge technologies, have been succesfully completed. Its main feature is the
water lubrication system for all pump and electric motor components, which eliminates the use of oil in
the reactor compartment, thus significantly improving the fire safety of the reactor unit and the NPP as a
whole. The purpose of the life tests was to confirm the reliability of the RCP-1753 pump during continuous
operation and to verify the possibility of its shutdown for 72 hours under conditions that fully simulate an
emergency loss of power at an NPP power unit.
This design has a number of advantages and improved characteristics compared to previous types of pump
units, especially in terms of reliability and efficiency, and is unique in the world.
Gas and petrochemical industry
In the reporting period, Europe's first and the world's third test bench for critical liquefied natural gas
(LNG) equipment was put into operation. The development of a line of LNG pumps was initiated, and a
project was launched to develop and manufacture LNG loading arms and spiral heat exchangers for LNG
production using mixed refrigerants. The development of equipment for the domestically developed Arc-
tic Cascade 2 natural gas liquefaction process was started.
Floating power units (FPUs)
FPUs have considerable commercial potential not only in Russia. Compared to other power generation
sources, FPUs have a number of advantages: they are environmentally friendly and help to address the
electricity pricing issue by ensuring a stable long-term cost of electricity. In addition, they can also be used
to provide heat supply to various facilities.
Contribution to the technological sovereignty
of the Russian Federation
Nuclear power engineering facility with an HTGR
The global trend towards decarbonisation and carbon neutrality in energy supply for industry, transport and
utilities can be supported through the development of hydrogen energy.
The use of energy from nuclear reactors is currently one of the main areas of focus in the global transition
to hydrogen energy.
Replacing imported software tools and services for product life cycle man-
agement and process control
A project has been launched to replace imported solutions for an automated information system for re-
quirements, change and configuration management (AIS RCCM). The system makes it possible to manage
engineering data (the regulatory framework, project requirements, technical documentation) at various
stages of the life cycle of supplied equipment, track data versions, establish relationships, configure access
rights, etc. The AIS RCCM is an integrated information environment of the Mechanical Engineering Division
enabling customers and manufacturers to share technical data.
Digitisation of engineering information management processes can help to speed up the implementation
of ongoing projects and significantly improve their quality. In addition, this approach is mandatory for the
implementation of certain current overseas NPP construction projects.
33. Moisture separator-reheater.
34. High-pressure heater.
35. Low-pressure heater.
PERFORMANCE OF DIVISIONS
PERFORMANCE OF DIVISIONS
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