Development of load specifications for the design of the breeding blanket system

•Identification of single loads for the BB System.•Identification of the loads combination for the BB System.•Selection of short-list of loads combination for the Pre-Conceptual Design Review. The Breeding Blanket (BB) system with a volume of about 1700 m3 and a plasma front surface of about 1400 m2...

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Bibliographic Details
Published in:Fusion engineering and design 2020-08, Vol.157, p.111657, Article 111657
Main Authors: Spagnuolo, Gandolfo Alessandro, Boccaccini, Lorenzo Virgilio, Bongiovì, Gaetano, Cismondi, Fabio, Maione, Ivan Alessio
Format: Article
Language:English
Subjects:
Breeding blanket
Consortia
Critical components
DEMO
Load
Load specifications
Postulated initiating events
Shielding
Specifications
Structural integrity
Tritium
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Summary:•Identification of single loads for the BB System.•Identification of the loads combination for the BB System.•Selection of short-list of loads combination for the Pre-Conceptual Design Review. The Breeding Blanket (BB) system with a volume of about 1700 m3 and a plasma front surface of about 1400 m2 represents the largest In-Vessel component of DEMO reactor. Due to its position and its key functions (e.g. tritium production, thermal power removal and shielding), the BB is also one of the most critical component. The single loads acting on the BB can be of different nature (inertial, pressure, thermal and electromagnetic, for instance) and their combination may produce high stresses jeopardizing the BB structural integrity if not carefully taken into account during the design. For these reasons, within the EUROfusion consortium, the development of BB system load specifications has been pursued since the early pre-conceptual design phase. The main goals of this work are: (i) to list all relevant single loads and their combinations to be considered for the verification of BB structural integrity, and the categorization of these relevant load combinations, (ii) to identify the short list of load combinations relevant to the pre-conceptual design review phase in sight of 2020 Gate Review. Particular emphasis is also given to the most representative postulated initiating events, which drive the design of the BB, providing their respective load combination.
ISSN:0920-3796
1873-7196
DOI:10.1016/j.fusengdes.2020.111657