Electricity

Question 1

Internal substations must be against an outer wall, separated from all other parts of building by walls/doors with what fire rating.

Answer 1

4 Hrs

Question 2

What are the initial actions at a wind turbine incident?

Answer 2

1/ liaise with on-site personnel.
2/ request power to be isolated
3/ request blades are “ locked out” and seek confirmation it’s happened

NB. Locking out blades does not remove electrical risk

Question 3

Info re electricity premises authorised person.

Answer 3

1/ available 24/7
2/ attendance time up-to 2hrs
3/ carry relevant id and liaise with IC on arrival

Question 4

What distance should ground and aerial appliance monitors be kept away from live conductors?

Answer 4

Should not be used within 30m of live conductors

Question 5

What distance must ladders and aerials be kept away from Overhead power lines.

Answer 5

Advice must be sought from authorised person and

NOT used within 10m

Question 6

any fire in the nacelle or high up in a wind turbine will necessitate a cordon. What size should the cordon be.

Answer 6

Depends on height of turbine

However 300m recommended as a starting point

Question 7

What are electrical gloves rated to

Answer 7

3300 Volts

Question 8

Safe distances when working near overhead power lines.
Branch
Monitor
Ladders person
Aerials 
Carrying out rescue

Answer 8

Branch=20m
Monitor =30m
Rescues= 5m
Ladders/aerials = 10m (20 if training)