THERMAL-STRUCTURAL AND SHOCK EVENT EVALUATIONS OF THE FUELING PELLET INJECTION SYSTEM FOR ITER

Oscar Martinez, Sumalatha Yaski, Sarah Smith, Kara Godsey, David Rasmussen, Gary Lovett

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

The United States is among seven partner nations in a collaborative effort to design, build, and demonstrate fusion’s ability to become a large-scale carbon-free energy source. Each country has its own domestic agencies that contribute directly to the ITER project. US ITER, which is a US Department of Energy Office of Science project managed by Oak Ridge National Laboratory, is developing world-class engineering solutions to the design, construction, and assembly of the burning plasma experiment that can demonstrate the scientific and technological feasibility of fusion. US ITER’s scope includes completing the preliminary and final design, qualifying materials and processes for manufacture and testing, executing manufacturing, and delivering the fueling pellet injection system (FPIS) to the ITER site for assembly. The US-ITER FPIS system is designed to inject cryogenically frozen pellets of deuterium–tritium into the plasma. The FPIS has two main functions: (1) providing a steady supply of deuterium and tritium fuel and (2) mitigating the impact of edge localized modes on the plasma-facing components. The FPIS will have the capability to reside in three port cells within a tritium second barrier containment cask. Each pellet cask contains three flight tubes linking with penetrations on the torus cryopump housing and vacuum vessel: two for the magnetic high-field side pellet injection and one for the magnetic low-field side pellet injection. This paper presents the results of the thermal-structural analyses of the FPIS flight tube structural components when subjected to various loads such as electromagnetic loads; nuclear heating; and seismic, operational, and dynamic shock events. The resulting temperatures and stresses under combined conditions satisfied the design criteria to ensure the safe and reliable operation of the FPIS flight tubes within the vacuum vessel.

Original languageEnglish
Title of host publicationDesign and Analysis
PublisherAmerican Society of Mechanical Engineers (ASME)
ISBN (Electronic)9780791888483
DOIs
StatePublished - 2024
EventASME 2024 Pressure Vessels and Piping Conference, PVP 2024 - Bellevue, United States
Duration: Jul 28 2024Aug 2 2024

Publication series

NameAmerican Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP
Volume2
ISSN (Print)0277-027X

Conference

ConferenceASME 2024 Pressure Vessels and Piping Conference, PVP 2024
Country/TerritoryUnited States
CityBellevue
Period07/28/2408/2/24

Funding

This work was supported by the US-ITER DA, which is a US Department of Energy Office of Science project managed by Oak Ridge National Laboratory.

Keywords

  • ASME
  • ITER
  • LS-DYNA
  • Pellet injection
  • fatigue

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