In the event of an emergency, facilities must be prepared to respond to various potential dangers or crises. Facilities that work with caustic materials are required by OSHA to provide suitable facilities for quick flushing of the eyes, face and/or body. If there is an instance multiple employees could be concurrently exposed to a hazard requiring the use of drench equipment, then all emergency shower and eyewash units must be capable of running simultaneously while still meeting pressure and flow requirements. Many times the emergency shower and eyewash units run on a recirculating loop system.
When designing and laying out the piping loop for a recirculating tepid water system for a series of emergency showers, there are a number of important items to consider to maximize the performance and minimize the cost of the required tepid water delivery system.