Waste management scenario in the hot cell and waste storage for DEMO

Youji Someya, Kenji Tobita, Satoshi Yanagihara, Masatoshi Kondo, Hiroyasu Utoh, Nobuyuki Asakura, Kazuo Hoshino, Makoto Nakamura, Yoshiteru Sakamoto

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

Management strategy of radioactive waste generated in periodic replacement may be important in the point of view of fusion reactor design, because it has a large impact on the design of the hot cell and waste storage in the plant. In the replacement period of a fusion power reactor, the assembly of blanket or divertor modules needs to be removed from the reactor in order to minimize remote maintenance in the vacuum vessel and to attain reasonable plant availability. In the hot cell, the modules will be removed from the back plate of the assembly. Here, note that the active cooling must be done by a way that does not cause contamination of the hot cell environment due to dispersion of tritium and tungsten dust. In this sense, the cooling scenario is adopted that the existing pipe of cooling water in the assembly is connected to a different cooling water system in the hot cell. On the other hand, it is assumed that the structural material (F82H) of the blanket and divertor is not recycled due to its high contact dose rate. It should be crushed into small pieces to reduce volume of the waste and required storage space. In this paper, the basic idea of the waste management scenario and the conceptual design in the hot cell and waste storage for DEMO has been proposed.

Original languageEnglish
Pages (from-to)2033-2037
Number of pages5
JournalFusion Engineering and Design
Volume89
Issue number9-10
DOIs
Publication statusPublished - 2014 Jan 1
Externally publishedYes

Fingerprint

Waste management
Radioactive Waste
Cooling
Water cooling systems
Tungsten
Tritium
Fusion reactors
Cooling water
Conceptual design
Radioactive wastes
Dust
Contamination
Fusion reactions
Pipe
Availability
Vacuum

Keywords

  • DEMO
  • Hot cell
  • Radioactive waste
  • Waste storage

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Nuclear Energy and Engineering
  • Materials Science(all)
  • Mechanical Engineering

Cite this

Someya, Y., Tobita, K., Yanagihara, S., Kondo, M., Utoh, H., Asakura, N., ... Sakamoto, Y. (2014). Waste management scenario in the hot cell and waste storage for DEMO. Fusion Engineering and Design, 89(9-10), 2033-2037. https://doi.org/10.1016/j.fusengdes.2014.04.059

Waste management scenario in the hot cell and waste storage for DEMO. / Someya, Youji; Tobita, Kenji; Yanagihara, Satoshi; Kondo, Masatoshi; Utoh, Hiroyasu; Asakura, Nobuyuki; Hoshino, Kazuo; Nakamura, Makoto; Sakamoto, Yoshiteru.

In: Fusion Engineering and Design, Vol. 89, No. 9-10, 01.01.2014, p. 2033-2037.

Research output: Contribution to journalArticle

Someya, Y, Tobita, K, Yanagihara, S, Kondo, M, Utoh, H, Asakura, N, Hoshino, K, Nakamura, M & Sakamoto, Y 2014, 'Waste management scenario in the hot cell and waste storage for DEMO', Fusion Engineering and Design, vol. 89, no. 9-10, pp. 2033-2037. https://doi.org/10.1016/j.fusengdes.2014.04.059
Someya Y, Tobita K, Yanagihara S, Kondo M, Utoh H, Asakura N et al. Waste management scenario in the hot cell and waste storage for DEMO. Fusion Engineering and Design. 2014 Jan 1;89(9-10):2033-2037. https://doi.org/10.1016/j.fusengdes.2014.04.059
Someya, Youji ; Tobita, Kenji ; Yanagihara, Satoshi ; Kondo, Masatoshi ; Utoh, Hiroyasu ; Asakura, Nobuyuki ; Hoshino, Kazuo ; Nakamura, Makoto ; Sakamoto, Yoshiteru. / Waste management scenario in the hot cell and waste storage for DEMO. In: Fusion Engineering and Design. 2014 ; Vol. 89, No. 9-10. pp. 2033-2037.
@article{5d31413741b14540b18ada2cb7aee588,
title = "Waste management scenario in the hot cell and waste storage for DEMO",
abstract = "Management strategy of radioactive waste generated in periodic replacement may be important in the point of view of fusion reactor design, because it has a large impact on the design of the hot cell and waste storage in the plant. In the replacement period of a fusion power reactor, the assembly of blanket or divertor modules needs to be removed from the reactor in order to minimize remote maintenance in the vacuum vessel and to attain reasonable plant availability. In the hot cell, the modules will be removed from the back plate of the assembly. Here, note that the active cooling must be done by a way that does not cause contamination of the hot cell environment due to dispersion of tritium and tungsten dust. In this sense, the cooling scenario is adopted that the existing pipe of cooling water in the assembly is connected to a different cooling water system in the hot cell. On the other hand, it is assumed that the structural material (F82H) of the blanket and divertor is not recycled due to its high contact dose rate. It should be crushed into small pieces to reduce volume of the waste and required storage space. In this paper, the basic idea of the waste management scenario and the conceptual design in the hot cell and waste storage for DEMO has been proposed.",
keywords = "DEMO, Hot cell, Radioactive waste, Waste storage",
author = "Youji Someya and Kenji Tobita and Satoshi Yanagihara and Masatoshi Kondo and Hiroyasu Utoh and Nobuyuki Asakura and Kazuo Hoshino and Makoto Nakamura and Yoshiteru Sakamoto",
year = "2014",
month = "1",
day = "1",
doi = "10.1016/j.fusengdes.2014.04.059",
language = "English",
volume = "89",
pages = "2033--2037",
journal = "Fusion Engineering and Design",
issn = "0920-3796",
publisher = "Elsevier BV",
number = "9-10",

}

TY - JOUR

T1 - Waste management scenario in the hot cell and waste storage for DEMO

AU - Someya, Youji

AU - Tobita, Kenji

AU - Yanagihara, Satoshi

AU - Kondo, Masatoshi

AU - Utoh, Hiroyasu

AU - Asakura, Nobuyuki

AU - Hoshino, Kazuo

AU - Nakamura, Makoto

AU - Sakamoto, Yoshiteru

PY - 2014/1/1

Y1 - 2014/1/1

N2 - Management strategy of radioactive waste generated in periodic replacement may be important in the point of view of fusion reactor design, because it has a large impact on the design of the hot cell and waste storage in the plant. In the replacement period of a fusion power reactor, the assembly of blanket or divertor modules needs to be removed from the reactor in order to minimize remote maintenance in the vacuum vessel and to attain reasonable plant availability. In the hot cell, the modules will be removed from the back plate of the assembly. Here, note that the active cooling must be done by a way that does not cause contamination of the hot cell environment due to dispersion of tritium and tungsten dust. In this sense, the cooling scenario is adopted that the existing pipe of cooling water in the assembly is connected to a different cooling water system in the hot cell. On the other hand, it is assumed that the structural material (F82H) of the blanket and divertor is not recycled due to its high contact dose rate. It should be crushed into small pieces to reduce volume of the waste and required storage space. In this paper, the basic idea of the waste management scenario and the conceptual design in the hot cell and waste storage for DEMO has been proposed.

AB - Management strategy of radioactive waste generated in periodic replacement may be important in the point of view of fusion reactor design, because it has a large impact on the design of the hot cell and waste storage in the plant. In the replacement period of a fusion power reactor, the assembly of blanket or divertor modules needs to be removed from the reactor in order to minimize remote maintenance in the vacuum vessel and to attain reasonable plant availability. In the hot cell, the modules will be removed from the back plate of the assembly. Here, note that the active cooling must be done by a way that does not cause contamination of the hot cell environment due to dispersion of tritium and tungsten dust. In this sense, the cooling scenario is adopted that the existing pipe of cooling water in the assembly is connected to a different cooling water system in the hot cell. On the other hand, it is assumed that the structural material (F82H) of the blanket and divertor is not recycled due to its high contact dose rate. It should be crushed into small pieces to reduce volume of the waste and required storage space. In this paper, the basic idea of the waste management scenario and the conceptual design in the hot cell and waste storage for DEMO has been proposed.

KW - DEMO

KW - Hot cell

KW - Radioactive waste

KW - Waste storage

UR - http://www.scopus.com/inward/record.url?scp=84905991969&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84905991969&partnerID=8YFLogxK

U2 - 10.1016/j.fusengdes.2014.04.059

DO - 10.1016/j.fusengdes.2014.04.059

M3 - Article

AN - SCOPUS:84905991969

VL - 89

SP - 2033

EP - 2037

JO - Fusion Engineering and Design

JF - Fusion Engineering and Design

SN - 0920-3796

IS - 9-10

ER -