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Decontamination Procedures for Computers

Decontamination procedures for computers can range from regularly dusting the keyboard to using specially designed formulations to disinfect its surfaces. With viral outbreaks and other biological threats, decontaminating computers has become an area of concern, particularly in educational environments. Portable computers and those in public locations such as libraries and Internet kiosks are particularly susceptible to contamination, so regular decontamination of those computers may be necessary.

  1. Purpose of Decontamination

    • The U.S. Dept. of Labor's Occupational Health and Safety Administration recommends computer decontamination to prevent the spread of germs and the ingesting of harmful chemical substances by workers.

    Preparing for Decontamination

    • It is advisable to isolate contaminated areas if possible, depending upon the place and extent of the contamination. When possible, decontaminate the computer in place, rather than relocating it to another area. The computer should be on a clean, non-carpeted surface.

      The computer should be turned off and unplugged, and the battery, and all exterior electrical cords and cables removed. The computer should be at room temperature before cleaning it inside. An anti-static wrist strip should be used to reduce static electricity.

      Pre-cleaning a computer which has excessive dirt build-up is required so that the effectiveness of the decontamination is not diminished.

    High Efficiency Particulate Air (HEPA) Vacuuming

    • Vacuuming can remove dirt and other debris from the computer keyboard and vents, which may include spores. An electric vacuum is suitable on keyboards and the case outside, but not on the inside. Electric vacuums may create damaging static electricity. Instead, use battery powered handheld vacuum cleaners and be careful not to touch internal components. Exhaust fumes should not be allowed to enter the air and filters must be safely disposed of.

    Liquid Antimicrobial Products

    • Specially formulated liquids may be used to deactivate spores on hard surfaces of the computer, such as the case and keyboard. Pour or spray liquid antimicrobial products onto a cleaning cloth rather than putting liquid directly onto the computer surface, to prevent damage. Keyboard keys may be wiped with disinfecting and antibacterial wipes, or cotton swabs with rubbing alcohol. Try to use lint-free cloths to avoid scratches. Ensure that the computer is dried completely before turning it back on.

    Compressed Air

    • Hidden sources of computer contamination can include internal fans which draw air in. Care should be taken to clean these areas effectively; they may require an alternative type of cleaning, as per manufacturer recommendation.

      Compressed air is an alternative and sometimes, more effective method for decontamination than traditional vacuuming. The aerosol spray may dislodge particles to eradicate airborne spores which a surface cleaner could miss.

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