Incidents Involving Electricity Flashcards
Examples of electricity company premises include what?
- Power stations
- Sub - stations
- Distribution cables / equipment
- Fenced enclosures
- Wind Turbines
At a premises where a sub station has been provided within a building, the transformer chamber / sub station will be situated where?
Against an outer wall
What are the specific hazards related to electricity?
6 answers
- Electric Shock
- Fire
- Explosion
- Hazardous Gases or Liquids
- Trip Hazards
- Insulating Materials
Fire fighting at wind turbine sites should only commence once what has happened?
It has been confirmed by onsite personnel that the blades have been “locked out”
During an incident involving electricity what should crews not do if they see warning signs restricting access?
Crews MUST NOT pass warning signs retricting access until responsible person is in attendance
What must be included in any messages requesting attendance of a representative at either a National Grid pylon or an Energy Operator premises?
Unique markings / identification plates
What should crews focus their efforts on while waiting for a responsible person at an incident involving electricity?
Protecting the surrounding risks
How many hours willl substations sited within buildings provide fire protection for?
4 hours
What are the safe distances from overhead cables when using ground and aerial appliance monitors?
30 metres
When working in close proximity to overhead power cables, aerial appliances, ladders and work not involving the use of hoses should be kept at what distance away?
at least 10 metres
When working in close proximity to overhead power lines in dense smoke or flames firefighters should position themselves or their equipment where?
Within a ‘corridor’ 10 metres either side of the overhead power line.
What is the recommended cordon size when attending incidents involving wind turbines?
300m diameter
What is the additional hazard encountered when dealing with battery banks at an Uniterruptible power supply?
The batteries will remain live untiil they have been drained of their power.
What must be done prior to attemting a rescue or retrieval of a person in contact with electrical apparatus?
The power supply must be shut down
LFB electrical gloves will provide adequate protections if the voltage is below what?
3300v
