Tungsten Alloy Shielding For Radiation Pasteurization

Tungsten alloy shielding for radiation pasteurization is used for shielding the radiation released from the process of radiation pasteurization. Radiation pasteurization is a technology that uses ionizing radiation to kill the causative agent (including virus) to achieve the purpose of toxicity elimination. Its radioactive source is Co60 radioactive source which can release γ rays from a decay. The pests and bacteria hided in the fruits and vegetables would suffer from the physiological function changes and lost the ability to grow and develop after being exposed to these γ rays. So far, radiation pasteurization is widely used for the disinfection of various kinds of medical apparatus and instruments, such as catheters, cannulas, bandages, dressings, suture materials, surgical instruments, injection equipments, blood transfusion equipments, artificial kidney dialyzer, biological tissues for transplantation. It also can be used in pharmaceutical, food, agricultural products and customs, etc.

Co60 is a radioactive isotope of cobalt with a half-life of 5.27 years. Co60 decays by beta decay to the isotope nickel-60. The activated nickel nucleus emits two gamma rays with energies of 1.17 and 1.33 MeV. After entering a living mammal, some of the Co60 are taken up by tissues, mainly the liver, kidneys, and bones, where the prolonged exposure to gamma radiation can cause cancer. Low levels of gamma rays cause a stochastic health risk, which for radiation dose assessment is defined as the probability of cancer induction and genetic damage. High doses produce deterministic effects, which is the severity of acute tissue damage that is certain to happen.

Tungsten alloy shielding for radiation pasteurization is mainly used for shielding the β and γ radiation  released from the process of radiation pasteurization. Tungsten alloy shielding mainly uses high gravity alloy which has the characteristics of high density and innocuity. Therefore tungsten alloy shielding for radiation pasteurization has excellent shielding performance to shield  the β and γ radiation  generated during the process of radiation pasteurization, to avoid resulting in radiation damage. In addition, tungsten alloy shielding for radiation pasteurization is more environmentally friendly than some traditional shielding materials, such as lead, and will not pollute the environment. 

• < Prev
• Next >