A nuclear reactor, a core element of a nuclear power plant, is designed for self-control and the maintenance of chain nuclear reactions, and makes use of heat energy from nuclear fission within the reactor. Doosan Heavy Industries & Construction provides reactor model APR1400, a 3rd-generation and Korean standard nuclear power plant, and the AP-1000 from Westinghouse to Korea, the U.S., the UAE, China and other countries.
A reactor vessel is designed to withstand high temperatures and high pressures in order to provide a space for containing nuclear fuel and chain reaction. It contains reactor internal components with a bottom head welded at the lower part of its cylindrical body.
The reactor vessel closure head assembly is a flanged hemispherical component bolted to the vessel by studs, nuts and washers to facilitate refueling and inspection.
The steam generator operates between the primary and secondary coolant loops. The heat generated by the nuclear fission in the reactor core is delivered to the coolant in the primary loop. The heat is transferred between the two loops, converting water into steam and delivering it to the turbines.
- Moisture separator (for standard steam generators)
- AS01 moisture separator (for replacement steam generators)
- Tube support plate (horizontal)
- Improved axial tube support plate (for replacement steam generators)
- Auxiliary feedwater system (for standard steam generators)
- Upper tube bundle supports
- Steam dryer
- Steam outlet nozzle (for standard steam generators)
Nuclear Reactor Coolant Pump
A nuclear reactor coolant pump is installed at the primary system of the nuclear power plant. The large capacity vertical pump is a key part of the nuclear steam supply system and delivers the heat generated by nuclear reaction to the steam generator by compulsively circulating the high-temperature and high-pressure coolant.
- Provide the motive force for circulating the coolant in the reactor coolant system
- Primary heating of reactor coolant
- Reactor coolant pressure boundary
- Maximum operational reliability is required as the stoppage of RCP leads the stoppage of a nuclear plant
A boiler is used to burn fossil fuel to produce high-temperature, high-pressure steam needed in power generation plants or other industries. It consists of the steam pressure vessel, a circulation system, a combustion unit where the fuel is burned, a ventilation unit supplying the combustion air and discharging the exhaust gas and other auxiliary units.
he technology and experience we have gained while designing, manufacturing, installing and maintaining and repairing boilers for clients worldwide have enabled us to build an extensive boiler portfolio that includes large-capacity drum, once-through and fluidized-bed models for power plants as well as various models for industrial use. We also boast the technology to design eco-friendly models that are highly efficient and capable of removing toxic substances from exhaust gas.
A turbine rotates blades inside with hot, high-pressure steam created by the steam generator or HRSG(Heat Recovery Steam Generator), and runs the power generator with the turning force. Doosan Heavy Industries & Construction provides steam turbines designed and manufactured in-house, and is technologically recognized around the world for producing the first gas turbine in Korea, which is considered the centerpiece of power generation technology.
Steam turbines convert heat energy into rotational energy as the blades are driven by the high-temperature, high-pressure steam generated by the high-capacity power plant boilers. They can be classified as high-, medium- and low-pressure models.
Doosan Heavy Industries & Construction entered the steam turbine business in 1978, starting with a 200 MW model for the Seocheon Power Plant. Currently, we are capable of designing and manufacturing steam turbines with the specific capacities required for any thermal or nuclear power plant.
Doosan Heavy Industries & Construction applies an online quality control system for every process in the manufacturing of steam turbines, from materials procurement to finished product. The know-how we have acquired in the manufacturing and installation of steam turbines to date is applied to design models with ever-higher reliability.
Doosan Skoda Power : Turbines(English)
Pressurized air from the compressor is mixed with fuel, ignited and burned to generate high temperature gas which rotates the turbine. It is the key equipment in combined cycle/ cogeneration power plants. With the growing interest in environmental preservation and power generation load issues in recent years, demand for gas turbines with high performance, reliability, fuel diversity and toxic emissions reduction has been increasing.
A core part of a power plant, generators produce electricity by electromotive force from the turning force delivered by a turbine. Doosan Heavy Industries & Construction is capable of manufacturing high-capacity steam turbines, gas turbines, and power generators for diesel engines with a capacity of 30MW to 1000MW, which can cover diesel power generation or even nuclear power generation.
The company is now capable of supplying a wide range of generators that meet diverse needs of global power generation system markets.
- Air-cooled generators
- Hydrogen-cooled generators
- Hydrogen/water-cooled generators
Plant Instrument Control System
Doosan Heavy Industries & Construction provides comprehensive electronic and instrumentation solutions optimized for the material purchasing, design, manufacturing, implementation, pilot operation and services of a power plant.
Man Machine Interface System
Utilizing its extensive nuclear power plant construction experience, Doosan Heavy Industries & Construction designs and installs various instrument control systems that help to operate these nuclear power plants more safely and efficiently.
Industrial Electrical & Control System
Doosan Heavy Industries & Construction has the capability to design and manufacture all electrical instrumentation and control systems for power plants, water plants and other industrial plants.
Doosan HF Controls : Plant Instrument Control System (English)
Other Nuclear Power Related Facilities & Components
In addition to the main nuclear equipment, Doosan Heavy Industries & Construction provides CSB lift rig, UGS lift rig, pool seal, ICI support system, control element drive mechanism, integrated head assembly, etc. needed for the operation of nuclear power plants.
Bulk Handling System
Doosan Heavy Industries & Construction provides bulk handling systems to domestic and overseas coal-fired thermal power plants, steel mills, cement plants and other industrial plants. The systems are installed at the docks of power plants or other industrial plants to transport bulk materials such as coal, iron ore and limestone.
Doosan Heavy Industries & Construction has secured the best technology and resources and provides best-in-class services for the auxiliary facilites of power plants – such as intakes, sea water purification facilities, Air Preheaters, Electrostatic Precipitators, Flue Gas Desulfurizers, Condenser, LP/HP Feed Water Heater, Deaerator, Condenser Tube Cleaning System, Debris Filter & Moisture Separator Reheater.
Air Pollution Control
Air pollution control systems are used to remove air pollutants such as sulfur dioxide, nitrogen oxides and dust contained in the flue gas emitted from thermal power plants or industrial facilities. Environmental facilities are installed from the rear to the stack of boilers. An air pollution control system consists of a DeNOx system (SCR) that removes nitrogen oxides by contacting flue gas with a catalyst, an Electrostatic Precipitator (ESP) that uses electrostatic force to remove dust, and a Flue Gas Desulphurisation (FGD) unit that removes sulfur dioxide from the flue gas by atomizing alkaline solutions such as limestone slurry or seawater into the flue gas. Doosan Heavy Industries & Construction is domestically and globally recognized for its OEM technology and delivery experience..
Doosan Power System : Air Pollution Control (English)