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Integrated design of breeding blanket and ancillary systems related to the use of helium or water as a coolant and impact on the overall plant design
- Source :
- Fusion engineering and design, 173, Article: 112933, Fusion Engineering and Design
- Publication Year :
- 2021
- Publisher :
- Elsevier Ltd, 2021.
-
Abstract
- Currently, for the EU DEMO, two Breeding Blankets (BBs) have been selected as potential candidates for the integration in the reactor. They are the Water Cooled Lithium Lead and the Helium Cooled Pebble Bed BB concepts. The two BB variants together with the associated ancillary systems drive the design of the overall plant. Therefore, a holistic investigation of integration issues derived by the BB and the installation of its ancillary systems has been performed. The issues related to the water activation due to the 16N and 17N isotopes and the impact on the primary heat transfer systems have been investigated providing guidelines and dedicated solution for the integration of safety devices as isolation valves. The tritium retention and the permeation rates through the blanket and its ancillary systems have been also assessed taking into account different operating points both for the BB and ancillaries and comparing, when possible, the releases with the operating and safety limits. Moreover, the issues related to the tritium start-up inventory as well as the uncertainties on the Tritium Breeding Ratio (TBR) due to the integration of the auxiliary systems within the Vacuum Vessel have been also studied. Finally, the impact of the BB concepts on the safety systems like the Vacuum Vessel Pressure Suppression System is described with a particular focus on the different measures that should be implemented according to the considered concept. All these aspects are then taken into account to drive future developments during the Concept Design Phase.<br />peer-reviewed
- Subjects :
- Technology
Nuclear engineering
integration issues
Breeding blanket
Integration issues
Water activation
Tritium management
VVPSS
chemistry.chemical_element
Isolation valve
System safety
Blanket
Tritium
01 natural sciences
010305 fluids & plasmas
0103 physical sciences
Fusion reactors -- Design and construction
General Materials Science
010306 general physics
water activation
Settore ING-IND/19 - Impianti Nucleari
Helium
Civil and Structural Engineering
Integrated design
breeding blanket
tritium management
Mechanical Engineering
Water -- Thermal properties
Coolant
Nuclear Energy and Engineering
chemistry
Heat transfer
Environmental science
Helium -- Thermal properties
Plant design
ddc:600
Power-plants -- Design and construction
Subjects
Details
- Language :
- English
- ISSN :
- 09203796
- Database :
- OpenAIRE
- Journal :
- Fusion engineering and design, 173, Article: 112933, Fusion Engineering and Design
- Accession number :
- edsair.doi.dedup.....44cb4aaedbab23068c713872e15db98e