What should be done with automatic sprinkler heads after hot work?

After completing hot work, covering automatic sprinkler heads with a damp cloth is the correct procedure. This helps protect the sprinkler heads from any possible sparks, heat, or debris that could damage them or inhibit their function. The damp cloth serves as a barrier, significantly reducing the risk of a fire or other hazards related to the hot work being conducted.

Covering the sprinkler heads is particularly important because any damage or obstruction to these devices can prevent them from operating effectively in the event of a fire. It ensures that they remain in working condition, ready to activate and suppress any fire incidents promptly.

In contrast, leaving the sprinklers uncovered could expose them to ignition sources or physical damage, while painting them can obstruct their operation and potentially interfere with their thermal activation. Removing them permanently is not an option, as this would eliminate necessary fire protection. Therefore, the use of a damp cloth is a sensible and effective precaution to maintain the integrity of the fire protection system while performing hot work.