What type of devices must be installed for rooftop appliances requiring service?

When it comes to rooftop appliances that require service, installing a fall restraint system is crucial for ensuring the safety of workers. Fall restraint devices are designed to prevent a worker from falling off an edge while performing tasks on a rooftop. These systems typically involve the use of equipment like body belts or lanyards that are anchored to a secure point, allowing the technician to move freely while still being protected from potential falls.

This setup is particularly important on rooftops where the risk of falling is heightened due to height and possible unprotected edges. A fall restraint system is preferred over other options because it allows workers to safely conduct maintenance or repairs without the risk of falling, thus reducing the chances of severe injury.

While options like fall barriers, safety harnesses, and protective railings provide safety measures, they serve different purposes or may not be as effective in the specific context of servicing rooftop appliances. For instance, fall barriers and protective railings generally act as passive protective measures to impede access to dangerous edges rather than actively keeping workers secure. Safety harnesses, while important in certain contexts, must be used in conjunction with fall arrest systems to be effective, which is not the primary focus when servicing rooftop appliances that require constant access.