Transmission Class Flashcards
These underground transmission circuits carry 115kV of electricity
High-pressure gas-filled
These types of underground transmission circuits carry 230kV of electricity
High-pressure oil-filled
This Circuit starts and ends at a substation
Hybrid circuit
Cross-linked polyethylene (XLPE) conductors are used in which circuit type?
Hybrid circuits
What are the three types of underground transmission circuits?
Hybrid
High-pressure has-filled
High-pressure oil-filled
What are the four components of every fall protection system?
Body support
Connectors
Anchorage
Rescue plan
When you are working on a dead end and your hoist is supporting a human load, what is your hoist good for?
85% of WLL of the hoist
When climbing a tower and you stop, what should you do?
Immediately attack work positioning strap and/or shock absorbing lanyard adjusted as short as possible
When you basket a wire rope sling and you reduce the angle from 90 to 30 degrees, what does it do to the WLL of the sling?
Reduces the WLL by 50%
When cleaning non ceramic insulators with a pressure washer, what’s the max pressure allowed, and what distance must you be away from insulator?
600psi, 10’ away
When Carrying non-ceramic insulators make sure to keep _________?
The bending of each end within 30° of horizontal while carrying a long load
What is MWD of 115kv in single layer fr?
48”
When working on 115kv and your MWD is 40”, what do you have to be in?
DLFR
What is your arc flash boundary on 115kv?
12’
How far should you place barricades from grounded vehicles?
Minimum of 10’
What statement is false about non-ceramic insulators?
They are stronger, and not as fragile as porcelain insulators
Which type of splice has a greater WLL for a wire rope sling in the vertical basket position: hand tucked, mechanical, or swaged?
Swaged
According to TD – 1009P – 01, if you cannot maintain tension in work positioning strap, what must you do?
attach to the structure with the fall arrest lanyard adjusted as short as possible
Which end should you attach the shock absorbing lanyard to?
Into the dorsal D ring on back of harness
If you are stringing wire within 20 feet of an energized circuit what must you do?
Install rope nets or guard structures. Cut out reclosing relay (nontest)
Which type of splice on a 1” vertical wire rope sling has the highest WLL?
Swaged (8.4)
What is the WLL of a Lindsey 6800/10H stringing block?
5000 lbs
Assuming that the workers or energize conductors are not isolated or insulated, what must be installed when crossing over or under conductors energized in excess of 300 volts?
Rope nets or guard structures
What must you look for when inspecting a temporary pole mounted work platform?
Cracks, loose bolts, missing keepers, and clean insulation points
