Turbine generator plant

Among these, Direct Cycle Gas Turbine Generation Plant recently attracts attention as the next stage power generation plant due to its excellent thermal efficiency. 

In the case of plants located deep in rock, the studies and the solutions implemented follow either one of the following two possibilities location of the turbine-generator system at depth close to the reactor cavern or location of this system on the surface. Indeed, the turbine-generator system is less vital to safety than the reactor, the auxiliary building and the fuel building. Figure 21-2 shows the layout of the cavern power station SENA with the turbine-generator plant located on the surface. 

Two PRISM reactor modules are paired to form one power block. A PRISM power block is shown in Figure 6.1. The power block suppUes steam for one 622 MWe turbine generator. Plant electrical output can be tailored to local needs by the modular addition of power blocks. 

Description of the turbine generator plant and systems (details to be given if innovative equipment is to be used)... 

The novelty of the MASLWR turbine generator plant system is in its factory fabrication and modularity. As mentioned in the previous part, the turbine generator module is similar to the condenser and reactor module in that its relative size and weight allows for it to be completely factory fabricated and shipped to the plant on rail or truck. Another benefit of the small scale of the turbine module is that it can be located inside the reactor building, helping consolidate the power cycle and reducing the threat of sabotage. It can also be swapped out for maintenance or repair without a loss to downtime. 

The choice of a candidate turbine generator plant for the UNITHERM NPP depends on the plant capacity and operation mode (electricity generation or cogeneration) as requested by its users. It is planned to use standard turbine equipment, for example, manufactured by the Kaluga Turbine Works (AO KTZ) [II-6], These turbine-generators use steam of low parameters. 

The floating nuclear power plant will use a turbine generator plant based on the design developed by the Joint Stock Company LMZ and modified to meet shipboard reactor requirements (see Fig. IV-2). 

The main performance data of the turbine generator plant are given in Table IV-9. 

TABLE IV-9. PERFORMANCE DATA OF THE TURBINE GENERATOR PLANT... 

The main plant components (vessels, reactor installation, turbine generator plant, control consoles and systems, electric system, auxiliary and standby power supplies) are mounted, tested and commissioned at an interior shipyard. 

The FNPP has a turbo-generator unit intended for mounting the turbine generator plant and auxiliary systems. The arrangement of the turbine generator plant is longitudinal. 

The abbreviation ABV in Russian stands for nuclear, modular, water . Modular means it is possible to assemble a nuclear power plant of large functional factory-made units including the reactor unit and turbine generator plant. 

Application of a double-flow condenser enhances the reliability of the whole turbine generator plant because in case of failure of one flow channel, the second provides 100% power operation. 

The water heater is intended to preheat heating-system water before it is supplied to the steam heaters of the district heating coolant, by making use of heat of the heating steam condensate. The condensate, cooled in the water heater, is dumped to the turbine generator plant. 

A conventional two-circuit scheme is used to remove core heat the core is cooled by water of high purity, which also acts as a moderator. Hot coolant is cooled in a once-through steam generator (SG) where slightly superheated steam, supplied through the main steam line to the turbine-generator plant, is generated. 

The 4S-LMR plant layout is illustrated by Fig. XV-12. The area required to construct a reactor building including the turbine generator plant has been estimated as 25 mx50 m. 

Autonomous heat removal from the reactor installation disconnected from turbine-generator plant... 

The PBWFR concept [XXVII-1] is an evolution of the concept of a direct contact Pb-Bi fast breeder reactor (PBWR) proposed in [XXVII-2]. It is a pressure vessel type reactor, in which sub-cooled water is fed into the hot Pb-Bi coolant above the core, resulting in a direct contact boiling, as shown in Fig. XXVII-1. Boiling bubbles rise due to buoyancy effect, which also works as a lift pump for Pb-Bi circulation. The generated steam passes through the separator and the dryer to remove Pb-Bi droplets, and then flows to the turbine-generator plant. The outlet steam is superheated by 10°C to avoid the accumulation of condensate on a free Pb-Bi surface in the reactor vessel. 

A scheme of the turbine generator plant selected for the current version of a small NPP with the MARS reactor (intended for electricity generation) is shown in Fig. XXVIII-7. 

Turbine-generator plant this is a new component, not tested in the MSRE. Hastelloy N is a Nickel-based alloy suitable for steam atmosphere, and the miniFUJI plant could be used to demonstrate the operation of a super-critical turbine system, including load-following capability, the reliability of structural materials for the steam generator, etc. 

Commercially available equipment could be used for a supercritical turbine generator plant of the FUJI. As it was already mentioned, a combined system of the FUJI and the Free Piston Stirling Engine, the FUJI-STR, is being examined [XXX-34]. 

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