Transmission wage progression Flashcards
Cribbing is used to…….
Spread the strain over a large area
How must you rig on a tower when raising and lowering conductor?
Rig to the cage or leg first
When using a wire rope sling on objects with sharp edges, you must _________
Install padding to protect the wire rope from sharp edges
Typing a knot in a wire rope sling is ________
Never allowed
Grading rings are used to __________
Prevent corona noise and to protect the insulators rubber material from damage caused by high voltage stress.
How are alloy steel chain slings marked?
The size grade and rated capacity are listed on a permanently affixed, durable identification tag.
When you are setting up rigging on steel towers, wooden blocks are commonly used for ______
Cribbing
You are stringing a 1k span of conductor, and your current tension is 6,800 lbs, what will happen to the sag if you decrease the tension.
The sag will increase
What is the minimum anchorage for a tower?
A 2” x 2” angle iron, it must be secured by two 1/2” bolts or one 5/8” bolts
You are lifting a set of suspension insulators into position with a 1/2-inch Spec No. 1-1 rope. The insulators weigh 350 pounds and the rope has a working load limit of 800 pounds. The lift is going smoothly, but when the insulators are almost in the correct position, the rope breaks dropping the insulators to the ground. When the rope is examined, it appears to have damaged sometime before this job. Which of the following conditions most likely caused the accident?
Using worn or abused equipment
What should you do when a chain has a link that is not moving freely within an adjacent link?
Immediately remove the chain from service
Non-ceramic (or polymer) insulators should be stored _________
In a dry, clean area
What must you look for when inspecting a temporary pole-mounted work platform (diving board)?
Cracks, loose bolts, and missing keepers
When climbing to a work location on a latticed metal pole, what climbing technique should you see?
Climb maintaining three points of contact at all times
Complete the following sentence with the best answer. Grounding tailboard form is used to document the grounding scheme to be followed…….
For every job requiring protective grounding
What is the maximum load capacity of a temporary pole-mounted work platform (diving board)?
One person, with a maximum load of 500 pounds
You are working on a kingpin insulator on a wooden pole, what type of fall arrest system must you use?
12 ft shock absorbing lanyard
Complete the following statement with the correct answer. Protective grounding…….
Proves the circuit de-energized at the worksite
You are stringing a 1000 ft span of conductor. You decide to decrease the sag by 14 inches. What will happen to the tension in this case?
The tension increases
How is the working load limit of a hook affected when the load is off center in the hook?
The working load limit is reduced
When inspecting hardware (metal) on your FRE what are you not looking for?
Cuts and tears
When using a wire rope along on an object with sharp edges, you must _________
Install padding to protect wire rope from sharp edges
MWD for 480 volts
12”
What kind of clothing do you wear while operating solid blade 3 fused disconnects
DLFR
MWD for 500kv
135”
What is not true about non-ceramic insulators
Non-ceramic or polymer insulators are stronger and not as fragile
Which conductors do you ground first?
Lowest or nearest
When cleaning non-ceramic insulators, what pressure and how far away?
Min of 10 ft and 600 psi
What gloves do you wear when working with 50-300 volts
00 gloves
230kv insulators…………
Get one 11” grading ring on the hot end
What happens when you decrease slings from 90 degrees to 30 degrees
Reduces by 50%
Grade 30=
Grade 43=
Grade 70=
Grade80=
30 proof coil
43 high test
70 transport
80 alloy
When do you use a diving board?
When all other means of access are impossible
What is the multiplier for 22kv xlp-pvc?
12
4” conduit and you’re pulling 1000 kcmil triplex
25%
How much insulation do you remove for #6-350 kcmil single set screw terminals?
2 1/4”
On a riser from top of U shaped molding to communication level measurement?
36”
After you train cable
Allow for sufficient slack for movement of elbow
What does the air tester not test for?
Helium
Calculation ?? Something about 60 degree bridal with two legs
It’s 3/8 wire sling
Grade 80 chain requires……
Permanently Fixed ID tag
How do you tell block size?
Length of the shell
When crossing over or under conductors energized in excess of 300 volts
Install rope nets
Lindsey 6200/18
18”
Kellum grip
WLL 1,300
Hoist ? Supporting a ladder with a person
2550
Before installing grounds
Install barriers
How far does a down guy go from an arm?
8”
Where do you find post type insulators with clamp type?
Table 6
Short span urban max?
275 ft
350 feet span at 25 degrees F
7.3
ARC flash boundary 115kv
12 feet
Eye splice reduces rope by
10%
After climbing a tower/steel pole and you stop……
Hear it see it check it
Question about having adjacent hot lines
Putting protective rubber
Rule 708 in green book
Always put cover over the hole
Choking wire rope reduces it by ______%
25%
Fall arrest is good for ________ lbs?
5000
What does not affect sag?
Corrosive environment
Not a hazard nor do you need tailboards for?
Having a water discharge form
Cross linked poly conductors are used in?
Hybrid circuits
When storing insulators, put them on _______
Supporting plate that covers the distance of the whole insulator
Make sure hot sticks are free of cracks and grease to prevent _______
Carbon tracking
Approved chemicals on rubber devices?
Salcom and talcom powder
What to look for when inspecting slings?
Missing rating tags
Hazard with Wiggins voltage detector?
Other probe is always hot
Loose hardware in panel?
Could create arc flashing or fire
When using an extension ladder. How much should the ladders overlap each other?
3 feet
When you are working on a dead end ladder and your hoist is supporting human load, what is your hoist good for?
85% of WLL of hoist
When carrying non ceramic insulators make sure to keep ________
The bending of each end within 30 degrees of horizontal while carrying a long load
What is the mwd of 115kv in single layer fr
48”
When working on 115kv and your mwd is 40” what must you be wearing?
DLFR
Which type of splice has a greater WLL for a wire rope sling used in the basket position?
Swaged
What size wire rope sling do you need for weight between 3800-5800 in choker position?
5/8
Which end should you attach the shock absorbing lanyard to?
Into the dorsal D-ring on your tower harness
What is the model number for a swivel type 13 Miller with 1/4” wire rope?
BB-13
What is the WLL of a strong block, Lindsey 6800/10H?
5,000 pounds
Approved voltage for 120 volts?
114-126
What is considered secondary?
600 volts and below
Red tags are for
Secondary
Location tags need……
Next sectionalizing device
Picture of lead splice
Notify PIC
When using extension ladder, be sure to overlap the two sections of ladder by……..
3 feet
If rigging to raise conductor
You must rig to cage and the tower leg
Multi point method include
Source grounds and personal grounds
To be a qualified PG&E grounding observer, you must
Pass the PG&E grounding program
Hazards when working transmission circuits that are adjacent/ and or parallel
Induced voltage
What type of block do you need for a metal shell multi-sheave block when using 1/2” rope
4” block
Two or more vehicles connected to a grounding scheme
Must be connected to a single bonding point
WP2327-04 Chains must be inspected
Yearly
Smallest shackle used to lift 10000 lbs.
7/8
Testing 21kv de-energized but get a hot reading
Notify PIC, stop the job
Grounding at your work location
Single point grounding
4.2 grounding manual? Grounding 4 ACSR 21 kv with 115 overhead, what option do you use?
Option 1
Operating a vehicle that has become energized
Do not connect an additional ground
Bare minimum equipment used for barricades
4 cones
1500’ span length for 1113 AAC Marigold conductor, and you have to figure out what size hoist is required to lift conductor
Weight is 1567.5 lbs. and requires a 1 ton hoist
How far should you place barricades from grounded vehicles/ equipment
A minimum of 10’
What statement is true regarding personal grounds
Personal grounds do not need to be rated for fault duty
What is PG&E responsibilities for underground transmission circuits
Checking pressures and inspecting lines
What type of grounding is required on a hybrid underground transmission circuit
EPZ grounding
What is the definition of fault duty
The maximum amount of energy available in a circuit
