Effects of gamma irradiation on the degradation of silicone rubber by steam exposure

Seitaro Ito; Yu Miyazaki; Naoshi Hirai; Yoshimichi Ohki

doi:10.1080/00223131.2020.1815605

Effects of gamma irradiation on the degradation of silicone rubber by steam exposure

Seitaro Ito, Yu Miyazaki, Naoshi Hirai, Yoshimichi Ohki

Kagami Memorial Research Institute for Materials Science and Technology

Research output: Contribution to journal › Article › peer-review

Abstract

Silicone rubber (SiR) is an important electrical insulating material for safety-related cables in nuclear power plants. This means that SiR must withstand the irradiation of gamma rays and the exposure to high-temperature steam. However, SiR is vulnerable to hydrolysis. Therefore, for the purpose of clarifying the behavior of SiR in such environments, sheets of SiR were exposed to steam at 171 or 200°C with and without pre-irradiation of gamma rays. As a result, it has become clear that SiR can withstand the exposure to high-temperature steam more robustly if it was irradiated by gamma rays to a proper dose in advance.

Original language	English
Pages (from-to)	166-172
Number of pages	7
Journal	Journal of Nuclear Science and Technology
Volume	58
Issue number	2
DOIs	https://doi.org/10.1080/00223131.2020.1815605
Publication status	Published - 2021

Keywords

Inorganic polymer
degradation
insulation
irradiation
severe accident
silicone rubber
vapor exposure

ASJC Scopus subject areas

Nuclear and High Energy Physics
Nuclear Energy and Engineering

Access to Document

10.1080/00223131.2020.1815605

Fingerprint Dive into the research topics of 'Effects of gamma irradiation on the degradation of silicone rubber by steam exposure'. Together they form a unique fingerprint.

Cite this

@article{af5aea45fede4387ba025b54f0fa34b4,

title = "Effects of gamma irradiation on the degradation of silicone rubber by steam exposure",

abstract = "Silicone rubber (SiR) is an important electrical insulating material for safety-related cables in nuclear power plants. This means that SiR must withstand the irradiation of gamma rays and the exposure to high-temperature steam. However, SiR is vulnerable to hydrolysis. Therefore, for the purpose of clarifying the behavior of SiR in such environments, sheets of SiR were exposed to steam at 171 or 200°C with and without pre-irradiation of gamma rays. As a result, it has become clear that SiR can withstand the exposure to high-temperature steam more robustly if it was irradiated by gamma rays to a proper dose in advance.",

keywords = "Inorganic polymer, degradation, insulation, irradiation, severe accident, silicone rubber, vapor exposure",

author = "Seitaro Ito and Yu Miyazaki and Naoshi Hirai and Yoshimichi Ohki",

note = "Funding Information: This research was performed under the research entrusted by Secretariat of Nuclear Regulation Authority in Japan. Publisher Copyright: {\textcopyright} 2020 Atomic Energy Society of Japan. All rights reserved.",

year = "2021",

doi = "10.1080/00223131.2020.1815605",

language = "English",

volume = "58",

pages = "166--172",

journal = "Journal of Nuclear Science and Technology",

issn = "0022-3131",

publisher = "Atomic Energy Society of Japan",

number = "2",

}

TY - JOUR

T1 - Effects of gamma irradiation on the degradation of silicone rubber by steam exposure

AU - Ito, Seitaro

AU - Miyazaki, Yu

AU - Hirai, Naoshi

AU - Ohki, Yoshimichi

N1 - Funding Information: This research was performed under the research entrusted by Secretariat of Nuclear Regulation Authority in Japan. Publisher Copyright: © 2020 Atomic Energy Society of Japan. All rights reserved.

PY - 2021

Y1 - 2021

N2 - Silicone rubber (SiR) is an important electrical insulating material for safety-related cables in nuclear power plants. This means that SiR must withstand the irradiation of gamma rays and the exposure to high-temperature steam. However, SiR is vulnerable to hydrolysis. Therefore, for the purpose of clarifying the behavior of SiR in such environments, sheets of SiR were exposed to steam at 171 or 200°C with and without pre-irradiation of gamma rays. As a result, it has become clear that SiR can withstand the exposure to high-temperature steam more robustly if it was irradiated by gamma rays to a proper dose in advance.

AB - Silicone rubber (SiR) is an important electrical insulating material for safety-related cables in nuclear power plants. This means that SiR must withstand the irradiation of gamma rays and the exposure to high-temperature steam. However, SiR is vulnerable to hydrolysis. Therefore, for the purpose of clarifying the behavior of SiR in such environments, sheets of SiR were exposed to steam at 171 or 200°C with and without pre-irradiation of gamma rays. As a result, it has become clear that SiR can withstand the exposure to high-temperature steam more robustly if it was irradiated by gamma rays to a proper dose in advance.

KW - Inorganic polymer

KW - degradation

KW - insulation

KW - irradiation

KW - severe accident

KW - silicone rubber

KW - vapor exposure

UR - http://www.scopus.com/inward/record.url?scp=85092445944&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85092445944&partnerID=8YFLogxK

U2 - 10.1080/00223131.2020.1815605

DO - 10.1080/00223131.2020.1815605

M3 - Article

AN - SCOPUS:85092445944

VL - 58

SP - 166

EP - 172

JO - Journal of Nuclear Science and Technology

JF - Journal of Nuclear Science and Technology

SN - 0022-3131

IS - 2

ER -

Effects of gamma irradiation on the degradation of silicone rubber by steam exposure

Abstract

Keywords

ASJC Scopus subject areas

Access to Document

Other files and links

Cite this