Answer: Alarm
Step-by-step explanation:
When equipment malfunction, the reason could be either from the person operating the equipment or there might be some error in the equipment.
As, soon as the equipment malfunctions, there should be an alarm initiated so that to vacant the place as there can be some accident associated with it.
In order to prevent the injury or any causality from taking place, there must be an alarm which is initiated.
Further, the proper paperwork and investigations can be done in order to study the whole case.