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Current Affairs

UV-C technology

Date: 16 July 2021 Tags: Miscellaneous

Issue

For neutralizing airborne SARS CoV-2 virus, UV-C disinfection technology will be set up in the Parliament during the upcoming session.

 

Background

SARS CoV-2 virus has the ability to spread easily and many technologies have been tested to neutralize them.

 

Details

  • Central Scientific Instruments Organisation (CSIR-CSIO) is behind the development of UV-C air duct disinfection system.

  • The system does not need new facilities but can be installed in existing air ducts. They neutralize virus in air using UV rays, depending on the size of the room.

  • The UV rays are concentrated on aerosol particles and have found their usage in close door settings such as halls, auditoriums, AC buses, class rooms etc.

 

Ultra Violet (UV)

  • UV radiation is a part of light that is emitted by the Sun. It is not visible to human eye as its wavelength is lower than visible range.

  • The light is further divided into UV-A, UV-B and UV-C. The UV-A and UV-B are received on Earth but UV-C is completely filtered by ozone layer.

  • UV-C has ability to cause eye damage and skin burns. UV-B can cause skin cancer whereas UV-A can alter the DNA of middle layer of skin cells.

 

Effectiveness of UV-C

  • UV-C rays have been used as disinfectant in hospitals, water treatment and food manufacturing process since long time due to their neutralizing abilities.

  • These rays can destroy the protective layer of the virus and kill them. The exact intensity and duration for destroying the virus is yet to be found.

 

Safety of humans

There is clear instruction to avoid direct contact with UV-C radiation. They can damage eyes and cause skin burns if exposed to.