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Safety

Electrical Safety

In the high-tech environment of the clinical laboratory, electrical safety is paramount. The dense concentration of analyzers, centrifuges, and computers - often operating near conductive liquids - creates a significant risk for fire and electrocution. Preventing these hazards requires strict adherence to power management protocols (Lockout/Tagout), discipline in wiring practices (avoiding extension cords/daisy chains), and a prepared response for accidents

Lockout/Tagout, Extension Cords, & Daisy Chains

Lockout/Tagout (LOTO) This is a critical safety procedure used during equipment maintenance to prevent accidental startup. It involves isolating the energy source (unplugging or flipping a breaker) and placing a physical Lock and a warning Tag on the switch

  • Purpose: Ensures that a centrifuge or track system does not activate while a laboratory scientist’s hands are inside the machinery
  • Rule: The key to the lock is held only by the person performing the work

Extension Cords and Daisy Chains Mismanagement of power cords is a leading cause of laboratory fires

  • Extension Cords: Permitted only for temporary use (e.g., <90 days). They must not be used as permanent wiring for analyzers. Cords must be inspected for cracks and must retain their grounding prong (the third pin)
  • Daisy Chaining: The practice of plugging one power strip into another is strictly prohibited. This increases electrical resistance and heat, creating a high risk of melting and fire
  • Protocol: High-wattage equipment (refrigerators, centrifuges) must be plugged directly into wall outlets

Accident Response

Electrical accidents involving shock or electrocution require a specialized response to protect the rescuer

  • The Hazard: A victim being shocked may be unable to let go of the source due to muscle tetany. A rescuer who touches them will also be electrocuted
  • The Response
    1. Do Not Touch: Never touch the victim with bare hands while they are in contact with the source
    2. De-energize: Immediately unplug the device or flip the main circuit breaker
    3. Disengage: If power cannot be cut, use a non-conductive object (wooden broom, plastic bin) to push the victim away from the source
    4. Treat: Check for pulse/breathing immediately (CPR/AED) and treat for burns/shock
  • Medical Follow-up: Any electrical shock, no matter how minor, requires mandatory medical evaluation due to the risk of delayed cardiac arrhythmia