Radiation resistance environment products

Radiation resistant rubber

■ Radiation resistant rubber
Research and development on radiation-resistant rubber is conducted in cooperation with the Japan Atomic Energy Agency, an independent administrative corporation (currently a national research and development corporation). Radiation-resistant rubber was developed in joint research for the improvement of radiation resistant rubber employed in rubber shock-absorbing materials and seals used in the high intensity proton accelerator facility (J-PARC). Examples of commercialization of the product are exhibited at the Sixth Industry-Academia-Government Cooperation Conference.
■ Characteristics of radiation-resistant rubber
  • Usable in high-intensity radiation environments.
  • Improved durability of rubber materials allows for reduced material costs.
  • Contributes to a reduction in the volume of radioactive waste materials.
  • Reduces exposure of personnel to radiation during inspection, maintenance, and replacement work.
  • Improves reliability of equipment.
  • A comprehensive product range is available (sheets, packings, seals, etc.)
■ Radiation types and characteristics
Type
Classification
α rays
Charged particle radiation
High-speed helium nuclei
β rays
Charged particle radiation
High-speed electron flow
γ and χ rays
Electromagnetic radiation
Short-wavelength electromagnetic radiation
Neutron rays
Non-charged particle radiation
Flow of neutrons comprising the atomic nucleus
■ Radiation units
    放射線の単位
  • Absorbed dose: Gray (Gy)

    • Indicates the amount of energy absorbed by a substance.
    1 Gy indicates absorption of 1 J of energy per kg of a substance.

  • Dose equivalent: Sievert (Sv)

    • Indicates the effect of absorbed radiation on the human body.

Radiation
Quality factor
β rays, γ rays, χ rays
1
Neutron ray
10
α rays
20
■ Radiation resistance of elastomers ■ Product examples

Flexible container bags

Packings and gaskets

Pressure-resistant hoses

Punched gaskets

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