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Term 1: HVAC Safety > Video Assignment Safety questions > Flashcards

Video Assignment Safety questions Flashcards

1
Q

What must you wear on all construction sites?

A

steel toe shoes

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2
Q

List three steps you should take before entering a confined space or vessel?

A
  1. pump out or drain
  2. mechanical ventilation
  3. isolate the vessel/valve off
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3
Q

When entering a confined space or vessel, what are two things the buddy or standby man should do?

A
  1. have continuous voice contact

2. respond to any unusual behaviour

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4
Q

High temperature and to a lesser degree, a combination of heat and water can cause refrigerants to break down into hydrofluoric and hydrochloric acids. If you detect a strong irritating odour you should?

A

Warn others, ;leave the area immediately and report it

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5
Q

Before putting on any_ piece of Personal Protective Equipment, you should examine it to see if there are any defects that might make it ineffective. Why does this apply particularly to respiratory devices?

a) They are usually somewhat more complicated.
b) They .must fit absolutely tight,· no leaks allowed.
c) Under certain conditions a defect could lead to
injurys
d. All of these

A

d) all of these

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6
Q

If any of your Personal Protective Equipment shows defects, is worn-out or cannot be correctly fitted, what should you do?

A

Report it to your supervisor who will have it repaired
or replaced. Do not begin work until substitute
equipment is obtained.

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7
Q

Shoes with good ____________ prevent the feet from cramping while the wearer is working on ladders

A

arch support

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8
Q

______ gloves are worn when handling hot items or welding

A

heat-resistant

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9
Q

When working with acids or chemicals which type of gloves are used?

A

Rubber

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10
Q

When diluting acid always pour down a ________ and pour

a) water into acid
b) acid into water

A

glass rod

b) acid into water

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11
Q

when working on an industrial process job site, what should be done before opening a water box?

A

check with the industrial process foreman to see what the chilled medium is

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12
Q

What two things must you do if you are injured?

A
  1. get medical treatment

2. report immediately

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13
Q

List two things you should do when arriving on a new job site?

A
  1. first aid location

2. emergency exit location

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14
Q

When working with airborne fibreglass or asbestos dust which equipment must be worn?

a) air purifying respirators
b) gloves
c) coveralls
d) head gear and foot covering
e) all

A

e) ALL

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15
Q

If you see an area identified with a radiation sign what cautions must you make?

A

Get authorization

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16
Q

Ladders must always be inspected before use, list two items:

A
  1. damaged rungs

2. damaged rails

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17
Q

the maximum working height on any ladder is _________ below the top rung

A

2 rungs

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18
Q

What can happen if you use an ohmmeter on a energized circuit?

A

damage to the meter and personal injury

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19
Q

TRUE OR FALSE
do not take ohm measurements or make continuity checks on a reciprocating compressor until you are sure all power is off to the unit, including the crankcase heater.

A

TRUE

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20
Q

Compressed air used for blowing parts clean must be regulated at a pressure of ________ pounds

A

30

21
Q

TRUE OR FALSE

when a compressed gas cylinder is not in use, the protective cap for the valve should be screwed in place.

A

TRUE

22
Q

A nitrogen cylinder pressure is over 2000 pounds. To control that kind of pressure you must use a

A

pressure regulator

23
Q

List three steps you should take before using a gantry:

A
  1. read manual
  2. do complete inspection
  3. check pins
24
Q

When would you inspect chains, cables, and slings?

A

each time before use

25
Q

TRUE OR FALSE

compressed air is dangerous. practical jokes or horseplay can not be tolerated under any circumstances

A

TRUE

26
Q

For your protection before working with electrical conductors or related equipment you must:

a) use metal ladders
b) lock open and tag all power sources and circuit to and from the equipment. test lockout by trying to start
c) call a qualified electrician

A

b) lock open and tag all power sources and circuits to and from the equipment. test lockout by trying to start.

27
Q

The acetylene cylinder is stored and use in the ___________ position only

A

vertical valve-end up

28
Q

What should you use to light oxygen-acetylene torches?

A

friction lighters

29
Q

Before doing electric arc welding, what should you do first? List 3 items:

A
  1. inspect electrical cables
  2. eye protection
  3. fire extinguisher nearby
30
Q

before using any electrical power tool check to see if:

A

they are double insulated and grounded

31
Q

TRUE OR FALSE

refrigerant cylinders should never be heated with an open flame or live steam?

A

TRUE

32
Q

Avoid contacting liquid refrigerant with the skin because?

A

It may cause freezing or frostbite

33
Q

TRUE OR FALSE

When pushing, pulling and prying, the maximum possible leverage should be used to avoid strains or injuries.

A

TRUE

34
Q

Moderately long loads should be carried ________ never on top of the shoulder

A

vertically

35
Q

List three things to do before lifting a load:

A
  1. size up the load
  2. straight back
  3. lift with legs
36
Q

What are three do not’s of lifting?

A
  1. don’t carry on shoulder
  2. don’t block line of sight
  3. don’t lift with back
37
Q

Which “3” cautions should be observed when pulling?

A
  1. you have good balance
  2. you have good leverage
  3. there is nothing behind you
38
Q

Fire extinguishers are class (A), (B), (C). Match the class with the type of fire:
___ electric equipment
___ wood, paper, trash
___ gas, oil, liquid

A

C
A
B

39
Q

Fire extinguishers require periodic maintenance. List 3 maintenance operations you should do. Apply it to all types of extinguishers.

A
  1. check pressure gauge ABC
  2. weigh gas cartridge A/C
  3. check for physical damage
40
Q

Once a reciprocating compressor is open, be careful not to let the oil come in contact with your skin, the oil may be acidic. What condition could cause this acidic conditions?

A

Motor burnout

41
Q

Anytime you’re checking a system, charging or purging a reciprocating compressor you should use:

a) Voltohmeter
b) gauge manifold
c) ohm’s law
d) halide leak detector

A

b) gauge manifold

42
Q

What two things should you do before working on a reciprocating compressor motor terminals?

A
  1. valve off compressor and release all pressure

2. ensure power is off by locking out

43
Q

Why is this statement true?

Never enter an enclosed fan cabinet nor reach into a unit while the fan is running.

A

Rotating parts could catch your clothing and cause injury

44
Q

You should insure adequate ventilation when welding or flame cutting inside an air handling unit because:

A

it prevents fumes from migrating through duct work

45
Q

Before working on dampers disconnect their:

A

Operators

46
Q

List 4 things you should do before servicing a cooling tower:

A
  1. advise customer that system will shut off
  2. stop refrigeration machine
  3. stop condensing water pump
  4. stop cooling tower fan
47
Q

You finished servicing a cooling tower. What should you do before putting it back in operation?

A

Check to make sure all persons are clear

48
Q

You need to service the interior chamber of a cooling tower. The best way to enter is thru the:

a) fan cylinder
b) side door
c) sump
d) air inlet

A

b) side door

Term 1: HVAC Safety (3 decks)

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