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Divisione Nucleare Progetto Project PDS-XADS <strong>AnsaldoEnergia</strong> Identificativo Document no. XADS 20 TRIX 009 Rev. Rev. 1 Cl. ris. class Pagina Page 9 XADS components/systems is provided to better understand the Master Logic Diagram constructed in the Sections from 3.3 to 3.6. Reactor System Provides the generation of energy from nuclear fission, and geometry for the thermohydraulic processes to take place. Provides neutron-shielding structures. Encloses the reactor coolant; provides Core supporting structures; provides a cover for the Reactor Vessel, inclusive of the mechanisms for fuel manipulation; provides a redundant barrier to contain the primary coolant in case of leakage (Guard Vessel). Reactor Coolant System Provides the lead-bismuth eutectic circulation to remove the energy from nuclear fission and beam radiation, as well as the means for transferring energy from the primary coolant to the secondary systems. Accelerator Beam Transport System Provides the transportation of the proton beam inside the Reactor Vessel. Reactor Proton Beam Target System Provides the interface between the proton beam and lead-bismuth spallation target, along with the related cooling functions. Primary Cover Gas System Provides storage, supply, circulation, confinement, and pressure control of the primary cover gas, and the gas for the in-Vessel enhanced circulation. Provides the radiological control and the decontamination of the primary cover gas. Provides the chemistry control of the reactor coolant. Target Enhanced Circulation System Provides a constant injection of Argon directly into the mass of the target coolant, to maintain the conditions required for sustaining the target coolant flow rate during normal plant operations. Reactor Integrated Purification System Provides the in-Vessel-integrated purification of the reactor coolant. Reactor Coolant Filling System DNU 020/1
Divisione Nucleare Progetto Project PDS-XADS <strong>AnsaldoEnergia</strong> Identificativo Document no. XADS 20 TRIX 009 Rev. Rev. 1 Cl. ris. class Pagina Page 10 Provides the Reactor with liquid LBE for initial filling. Provides for refill of the target system. Reactor Vessel Air Cooling System Provides the means for passive decay heat removal through air convection and radiation from the Guard Vessel in case of Secondary Coolant System unavailability. Secondary Coolant System The system provides the heat transport from the primary coolant to the external environment via the Air Coolers. Containment System Mainly includes components that are part of the Reactor Building structure, like foundation basemat, walls, hatches, mechanical and electric penetrations, etc. It provides a barrier against the release of radioactive products to the environment. It includes hatches for personnel and materials. Reactor Building HVAC System Provides filtration, recirculation, temperature and pressure control of the atmosphere in the Reactor building and purification of the air from airborne radioactivity before release to the stack. Plant Protection and Monitoring System Provides the acquisition of safety grade field signals, the generation of beam trip signals and subsequent Accelerator scram, the actuation of the safeguard system logic, and drives the operation of safety components. Core Instrumentation System Provides the Instrumentation and data Elaboration for an on-line evaluation of Keff. Core (Exit) Temperatures Monitoring System Provides Core exit temperature signals to monitor the adequacy of Core cooling functions. Failed Fuel Detection System Detects a fuel clad leak and provides information for locating the failed element. DNU 020/1
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