week 3 (chapters 5-7) Flashcards

1
Q

why are synthetic slings popular among the power delivery industry?

A

they are non-conductive

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2
Q

what are the three configurations of synthetic, wire rope, and chain slings?

A

vertical/choke/basket

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3
Q

the working load limit of a a sling depends on its?

A

configuration

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4
Q

a choke is worth about half the weight of a ________ confirmation

A

vertical

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5
Q

a basket is worth about twice as much as a ________ configuration?

A

vertical

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6
Q

you should use a _______ configuration only when a _______ configuration is not possible? why is this the case?

A

choker/basket………reduces the strength of the sling

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7
Q

when a sling is rigged form each corner of a piece of equipment to the lifting eye, this is called?

A

a bridle

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8
Q

using a choker has what benefits?

A

allows the sling to bite down
minimizes slip/travel

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9
Q

why is the basket configuration the strongest?

A

it divides the weight between each eye

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10
Q

what is the most common material used to make synthetic slings?

A

nylon

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11
Q

slings with missing name tags must be immediately _______ ___ ________?

A

removed from service

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12
Q

what does the name tag on a sling provide?

A

WLL of choker, basket, and vertical configurations

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13
Q

what are the 6 types of web slings?

A

type 1) triangle choker
type 2) triangle to triangle
type 3) flat eye and eye
type 4) twisted eye and eye
type 5) endless
type 6) reversed eye

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14
Q

sling with two different sized triangle eyes on each end……

A

Type 1) triangle choker

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15
Q

triangle metal eyes on each end of the same size

A

type 2) triangle to triangle

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16
Q

eyes woven in each end and can be used in ether of the three configurations?

A

type 3) flat eye to eye

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17
Q

eyes at each end….BUT, have eyes sewn at right angles for chokers and baskets?

A

type 4) twisted eye and eye

18
Q

continuous loop……………….

A

type 5) endless

19
Q

multiple widths of webbing help edge to edge stitched together through the middle/wear pads/high strength……?

A

type 6) reversed eye

20
Q

synthetic slings should be _____ before each use?

A

inspected

21
Q

synthetic slings are made the same as _____ ________ and therefore wear the same?

A

synthetic ropes

22
Q

do not subject synthetic slings to _______?

A

heat

23
Q

never consider synthetic slings to have _______ properties?

A

insulating

24
Q

cover up _____ _______, and ________ before the use of a sling?

A

sharp edges, corners

25
Q

when not in use, synthetic slings must be stored clean dry and out of the sun due to ______?

A

damage from UV light

26
Q

a sling with a knot in it has an efficiency rating of?

A

0%

27
Q

strand laid single leg, eye to eye IWRC 6x19 describes what?

A

wire rope sling

28
Q

chains have what common uses?

A

securing loads
providing rigging attachment points
lifting and moving poles and other equipment

29
Q

chains that are used for lifting, rigging, or hoisting must be a minimum of?

A

grade 80 alloy

30
Q

chains used for setting poles are marked CO or CP, what do these abbreviation mean?

A

describes the master link and choke configuration
CO = choke, oblong link
CP = choke, pear shaped link

31
Q

what are the two types of shackles used in the power delivery industry?

A

material and rigging

32
Q

which shackle uses a screw pin, which uses a cotter pin?

A

rigging……..material

33
Q

a sling in a vertical configuration has a tension that is _____ to the load weight?

A

equal

34
Q

as the sling angle decreases, the tension on each sling ______ substantially

A

increases

35
Q

what is the formula for solving sling tension?

A

sling tension= length/height x weight/# of slings

36
Q

load capacities, boom position, operational zones, and notices/warnings are all found where?

A

load angle chart

37
Q

why must workers always refer to the boom operational charts before operating a boom vehicle?

A

because operational zones vary greatly

38
Q

what is the STRONGEST position for a boom?

A

highest angle, fully retracted

39
Q

the ability for a digger Derick to lift an object within its max capacity depends on what two factors?

A

hook radius
sheave height

40
Q

booms of material handlers, (backhoe), are designed for use in almost any combo of angles but only when_________?

A

truck is level

41
Q

aerial lifts have ______ _______ to allow ground personnel to operate the eqip from the ground.

A

override controls

42
Q

when using a backhoes digging boom, all workers must stay _______ of the backhoe unless authorized by the operator

A

out of the swing radius