Applicability of steam-explosion retardant for molten nickel and tin at high-temperature

Masahiro Furuya, Takahiro Arai

Research output: Contribution to conferencePaper

Abstract

Steam explosion has been a potential threat to containment boundary during severe accident in light water reactors. Polyethylene glycol (PEG) aqueous solution is an effective triggering retardant for both spontaneous and external-triggered steam explosions. In order to investigate steam explosion controllability at high temperature and for high meting-point metal, experiments are extended for molten nickel and tin up to 1800oC. Steam explosion was suppressed for both molten tin and nickel in a 0.1 wt% PEG (molecular weight of 4×106 g/mol) aqueous solution. The stability of PEG was investigated with gel permeation chromatography, ion chromatography, and high-performance liquid chromatography. The results indicated that PEG may be precipitated in the liquid side without producing byproducts and suppress steam explosions even for the molten jet at 1800 oC.

Original languageEnglish
Publication statusPublished - 2017 Jan 1
Externally publishedYes
Event17th International Topical Meeting on Nuclear Reactor Thermal Hydraulics, NURETH 2017 - Xi'an, Shaanxi, China
Duration: 2017 Sep 32017 Sep 8

Conference

Conference17th International Topical Meeting on Nuclear Reactor Thermal Hydraulics, NURETH 2017
CountryChina
CityXi'an, Shaanxi
Period17/9/317/9/8

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Keywords

  • Additives
  • Cloud-point phenomenon
  • Polyethylene glycol
  • Retardant
  • Steam explosion
  • Triggering

ASJC Scopus subject areas

  • Nuclear Energy and Engineering
  • Instrumentation

Cite this

Furuya, M., & Arai, T. (2017). Applicability of steam-explosion retardant for molten nickel and tin at high-temperature. Paper presented at 17th International Topical Meeting on Nuclear Reactor Thermal Hydraulics, NURETH 2017, Xi'an, Shaanxi, China.