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service, maintenance, and repair > tools, safety, dwv > Flashcards

tools, safety, dwv Flashcards

1
Q

a water jet machine can provide up to _____ psi of working pressure

A

3500

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2
Q

a right angle drill has a _____” check size

A

1/2

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3
Q

a _____ is the preferred tool to use when tightening water supply connections to the faucet behind fixtures

A

basin wrench

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4
Q

the maximum tube size for which electric soldering torches can be used is

A

3”

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5
Q

a ____ wrench would be preferred when assembling a 1/2” to 3 “ pipe inside a small wall cavity

A

offset pipe wrench

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6
Q

a ____ is used to measure the amount of current in an electrical circuit

A

ammeter

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7
Q

the lower section of an extension ladder is called a ______

A

bed section

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8
Q

when flaring copper tube with an impact flaring tool, the collar must be ____ the tube end in order to make a proper flare

A

flush to

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9
Q

_____is packed into the cast iron hub before the lead is applied

A

oakum

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10
Q

when pouring a cast iron joint, the layer of lead should be _____

A

1” thick

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11
Q

a _____ wrench should be used to assemble, without marring, pipe with finished chrome plating.

A

strap

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12
Q

a ____ is a tool used to cut external threads on pipe

A

die

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13
Q

a ____ is a tool that is used to make victaulic joints

A

pipe groover

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14
Q

soldering is performed with temperatures less than _____ degrees

A

840

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15
Q

tubing benders are used on _____ copper tubing

A

annealed

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16
Q

expanding tools and crimping tools are used on

A

pex

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17
Q

a _____ drill is used to drill holes in concrete

A

hammer

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18
Q

a ____ is used on concrete

A

masonry bit

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19
Q

before an operator can behind to use a powder actuated tool, the operator must____

A

have passed the exam on the safe operation of the tool

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20
Q

______ is the most dengerous common gas becaquse it gives no warning to its victims and is slightly lighter than air

A

carbon monoxide

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21
Q

a ____ is a test instrument used to measure the pressure of gases and vapors in a closed system

A

manometer

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22
Q

the main advantage can of using a clamp on ammeter is _____

A

measurements can be taken without opening the circuit

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23
Q

plumbers use liquid _____ to freeze pipes

A

nitrogen

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24
Q

right angle drills can cut holes up to _____”

A

4-5/8”

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25
Q

a _____ is a circular saw that is attached to a small table and pivots at its rear

A

chop saw

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26
Q

an injured individual experiences shock when_____

A

injury is severe and the body vital functions are threatened by a lack of blood or when the major organs and tissues do not receive enough oxygen

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27
Q

self contained breathing apparetus must be inspected ____

A

monthly

28
Q

_____ is not recommended for safely operating power equipment

A

ensuring the power switch is in the ON position before connecting equipment to a source

29
Q

a class A fire extinguisher is identified by ____

A

the color green inside the triangle symbol

30
Q

the angle of repose varies on a job site when

A

types of soil change

31
Q

granular soil is ___

A

soil consisting of gravel , sand , or silts with little or no clay content

32
Q

a ____ is a vertical steel H beam that is driven into the ground and designed to hold wood lagging

A

soldier pile

33
Q

confined spaces do not include ____

A

trenches less than 4’ in depth

34
Q

section _____ of an SDS contains information about proper handling and storage of a material

A

7

35
Q

____ is not advised if a fuel gas cylinder is found leaking around the valve stem

A

keeping the cylinder in the working area

36
Q

what is required on a confined space entry permit

A

names of employees, air sampling instruments, life saving equipment,

37
Q

an extension cord with a capacity of ___ Amps is suitable for most power tools

A

15

38
Q

the most common type of electrical shock hazard is a ____

A

ground fault

39
Q

a sanitary waste system should not be used for waste ____

A

from storm water drains

40
Q

respiratory protection is required to protect against ____

A

airborne chemical hazards

41
Q

a class ____ fire extinguisher should be used on an electrical fire

A

c

42
Q

graywater system is an onsite water treatment and recycling system that uses wastewater generated from?

A

washing machines, showers, bathtubs, and sinks

43
Q

graywater can be used in _____

A

water closets, urinals, trap seal primers, and directly connected underground irrigation systems

44
Q

on a sewage pump, the float level for the high water alarm should be set ___ above the highest level for pump activation depending on the depth of the sump pump

A

6 - 12”

45
Q

a pipe repair clamp can be used to repair a pipe that ____

A

has a pinhole

46
Q

a transition coupling is used for ____

A

forming a leak proof joint between two sections of drain piping

47
Q

a ____ valve is used to prevent the backflow of sewage into a building

A

backwater

48
Q

a ____ cutter head is recommended when sand is present in the lines

A

space

49
Q

when no cleanout is present and rodding from a waste arm underneath a sink is the best access a ____ drain cutting head is best suited for this application

A

drop head auger

50
Q

care must be used when water jetting a ____ pipe

A

poly vinyl chloride

51
Q

an _____ valve does not require any power and is less prone to being blocked by debris than any other backwater valve

A

automatic knife valve (backwater)

52
Q

a ____ cannot be used to supply a gray water system

A

water closet

53
Q

_____ is the process of attaching two ends of plastic pipe together using heat and pressure

A

butt fusion

54
Q

a _____ is a water tight pit or receptacle into which liquid or liquid carried waste is drained

A

sump

55
Q

the method of drain cleaning that uses high pressure water directed through hardened steel or a brass nozzle to open and clean drain lines is called ____

A

water jetting

56
Q

_____ is a condition that occurs when a pump attempts to compress air trapped in the discharge pipe and does not move any water

A

air lock

57
Q

a _____ pump is used to pump graywater or other non organic liquids from sinks and washing machines into building drains

A

laundry

58
Q

a ____ is an extension from the building storm drain to a public storm sewer or other point of disposal such as a retention or detention pond

A

building storm sewer

59
Q

the ____ system is the portion of a plumbing installation designed to maintain atmospheric pressure within the installation

A

venting

60
Q

a ____ is a pipe fitting with a removable plate or plug that provides access to the plumbing or other drainage pipes for inspection and removal of materials

A

cleanout

61
Q

what types of testes and be used to determine leaks in the venting system

A

water

air

smoke

62
Q

______ are air pressure activated, one way mechanical vents that are used to replace conventional pipe venting

A

air admittance valves (AAV)

63
Q

a ____ valve is a plumbing valve that permits fluid flow in only one direction and closes automatically to prevent backflow

A

check valve

64
Q

sump pump and sewage ejectors should be thoroughly inspected

A

annually

65
Q

a _____ is a device that rests on the surface of a liquid and actuates a valve or switch in a plumbing system

A

float switch

66
Q
A

service, maintenance, and repair (3 decks)

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