Servicing of transformer substations is a very important process which facilitates reliable transmission and distribution of power. A part of this service is a possible emergency response.
During the service life of equipment most of defects do not appear immediately, but develop gradually. An example would be the destruction of cable terminals by high temperature. Another cause of accidents is excessive vibration, which has a gradual effect. The other causes of breakdowns are contamination of insulation, leakage of oil from transformers and circuit breakers, water contact in switchgear and controls.
Also, there are cases of negligence by operators that results in failures. The responsibility of the staff is to make decisions on restoring normal operation of equipment, while adhering to relevant requirements and regulations.
The guide to be taken when an electrical emergency arises: (Electrical Safety Regulations for Employees)
- Remove hazard to personnel and equipment, if it exists. Disable damaged equipment.
- Exclude human intervention in automatic operation of devices.
- Ensure operation of devices with power backup.
- Determine the nature and extent of damage with measuring devices.
- Inform an operator, who calls the maintenance personnel or a service crew.
With no communication with an operator on duty, the staff should eliminate or contain an accident. It is necessary to inform the neighboring facility about a shutdown of power for consumers for the duration of the emergency response.
Electric power companies are obliged to periodically organize staff training for emergency response in emergency simulators, and train employees in the basic steps of accident prevention and how to behave properly in extreme situations.