Leo's HVAC Tip: Lock Out/Tag Out/Block Out
Locking Out On Large Jobs
Locking Out On Residential Jobs
Blocking OutLarge fans should be blocked with a piece of wood even if the power is off. Air moving through the system can cause a fan to move.
Adapted from Safety for the Indoor Environment Technician by Leo Meyer, from the Indoor Environment Technician's Library series; www.lamabooks.com.
Publication date: 04/04/2005