MINE462 Health and Safety

Sandra Ranson
Quiz by Sandra Ranson, updated more than 1 year ago
Sandra Ranson
Created by Sandra Ranson over 3 years ago
141
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Description

MC and T/F questions from 2012/2013 and 2013/2014

Resource summary

Question 1

Question
Under the Ontario Occupational Health and Safety Act, an employer must supply their workers with safety boots and hard hats if the job requires it.
Answer
  • True
  • False

Question 2

Question
A company with 250 employees had 6 LTIs last year. What is the LTIFR?
Answer
  • 2
  • 2.4
  • 3
  • 12
  • 15

Question 3

Question
The TLV-C or CEL can be exceeded...?
Answer
  • Once per day
  • Once per hour
  • Only for 15 minutes at a time
  • Never

Question 4

Question
A gold mine uses cyanidation as a part of the gold extraction process. What kind of wastewater conditions would you expect in the tailings?
Answer
  • Acid rock drainage
  • High pH water, free cyanide and cyanide compounds
  • Low pH water, dissolved metal ions
  • Suspended solids

Question 5

Question
Identify the substance that may create acute lung hazard conditions if found in high concentration in the air
Answer
  • Nitrogen gas
  • Radon gas
  • 95% relative humidity (saturated) air
  • Carbon monoxide

Question 6

Question
Hydrogen sulfide gas has a distinctive odor that is noticeable at high concentrations (>5%)
Answer
  • True
  • False

Question 7

Question
Radon has a half life of approx 4 days. How much of the original material of a radon sample will be left after 24 days?
Answer
  • 1/4
  • 1/16
  • 1/32
  • 1/64
  • 1/128
  • 1/256

Question 8

Question
Most common cause of workplace injury?
Answer
  • Struck by object
  • Slips and falls
  • Bending/climbing/twisting
  • Repetitive motion
  • Contact with hot objects

Question 9

Question
Which of the following is a confined space
Answer
  • Ball Mill
  • Pressure vessel
  • Mine drift
  • Refuge station
  • Ball mill AND Pressure vessel
  • Mine drift AND refuge station

Question 10

Question
Pale face + cool/moist skin + dizziness = ?
Answer
  • Heat exhaustion
  • Heat stroke
  • Heat syncope
  • Dehydration

Question 11

Question
Rights of the worker include?
Answer
  • Right to know about dangers in the workplace and what to do
  • Right to formulate a safety policy for the workplace
  • Right to participate in keeping the workplace safe
  • Right to supervise other workers
  • Right to refuse unsafe work

Question 12

Question
The only workers who are not covered by the Occupational Health and Safety Act are transient agricultural laborers.
Answer
  • True
  • False

Question 13

Question
The three principal states of "occupational health" that must be satisfied (ie no departures from well-being) are:
Answer
  • Surveillance
  • Mental
  • Occupational
  • Social
  • Physical
  • Ergonomic

Question 14

Question
A biologic reaction that occurs within the lungs due to exposure to toxic hazards can create a breakdown of the walls of the alveoli, resulting in enlarged air spaces within the alveoloar region and decreased lung capacity to effectively diffuse oxygen into the blood. This disease is called:
Answer
  • Asbestosis
  • Emphysema
  • Silicosis
  • Smoker's lung
  • Bronchitis

Question 15

Question
In Ontario, who is responsible for establishing a Joint Health and Safety Committee
Answer
  • Employer
  • Ministry of Labour
  • Union
  • Worker

Question 16

Question
What would be the preferred choice for controlling or removing a noisy air compressor?
Answer
  • Wear earplugs while operating the compressor
  • Operate the machine remotely with the compressor in the shop
  • Install the compressor in insulated housing away from the shop

Question 17

Question
Which of the following is/are not an ergonomic hazard
Answer
  • Lifting heavy objects
  • Slippery floors
  • Poor lighting in a work area
  • Ladder with a broken rung
  • Keyboard at improper height

Question 18

Question
Which are not mechanisms of direct entry of toxic substances to the body?
Answer
  • Inhalation
  • Sedimentation
  • Injection
  • Centrifuging
  • Ingestion

Question 19

Question
Allergic contact dermatitis is an inflammatory skin disease caused by contact allergens and sensitized skin.
Answer
  • True
  • False

Question 20

Question
What condition is anemia?
Answer
  • Too many white blood cells
  • Too many red blood cells
  • Too few white blood cells
  • Too few red blood cells

Question 21

Question
Long term exposure to low levels of CO can cause what?
Answer
  • Heart attacks and strokes
  • Drowsiness, headaches, and unconsciousness
  • Liver and kidney damage
  • Lung cancer

Question 22

Question
What is the base assumption of animal testing?
Answer
  • It is more reliable than human testing
  • There is an exposure threshold below which no adverse health effects are observed
  • Rats and mice are more sensitive to chemical hazards than humans
  • Rats and mice are representative of human physiology

Question 23

Question
LD50 is the airborne/inhaled concentration that kills 50% of the animal tested
Answer
  • True
  • False

Question 24

Question
A coal mine explosion requires coal dust in the air in order to occur.
Answer
  • True
  • False

Question 25

Question
Where is methane gas likely to be found in a coal mine?
Answer
  • Near the roof of a chamber
  • Near the floor of a chamber
  • Only if an explosion occurs
  • Nowhere near any chamber

Question 26

Question
The W65 Self-Rescuer works in CO gas environments how?
Answer
  • Filters out CO
  • Provides oxygen
  • Transforms CO into C and O2
  • Transforms CO into CO2
  • Covers nose and mouth from CO exposure

Question 27

Question
Why is radon gas dangerous?
Answer
  • Toxic to breath
  • Short lived but energetic progenies
  • Progenies adhere to dust particles that lodge themselves in the lungs
  • Widely present in many homes

Question 28

Question
Exposure to UV rays can lead to what?
Answer
  • Baldness
  • Dandruff
  • Cataracts
  • Acne
  • Skin irritation

Question 29

Question
Which process would NOT aid evaporative cooling of the body
Answer
  • Inducing excessive dripping of sweat
  • Reduce body surface area covered by clothing
  • Reduce humidity in the surrounding area
  • Increase the velocity of airflows in the workplace

Question 30

Question
Which factor does not contribute to the severity of an arc flash?
Answer
  • Available current
  • Distance to the electrical source
  • How long to shut off the current
  • Weather

Question 31

Question
What is the JHSC not responsible for?
Answer
  • Hearing concerns of workers and health and safety representatives
  • Making a policies regarding health and safety practices in the workplace
  • Providing a process to identify health and safety issues
  • Making recommendations in regards to health and safety issues

Question 32

Question
Ministry of Labour Inspectors do not have the power to do what?
Answer
  • Inspect workplaces without warning
  • Issue orders to correct dangerous conditions
  • Investigate work refusal complaints
  • Make improvements to company health and safety practices

Question 33

Question
Which of the following is not a supervisor responsibilities?
Answer
  • Informing workers of job hazards or dangers
  • Making sure workers use safety and protective equipment when required
  • Making sure workers follow the law and company safety policy
  • Making sure management has adequate representation of the JHSC

Question 34

Question
Order the worker refusal process properly: [blank_start]Step 2:[blank_end] Worker representative from Health and Safety Committee is called [blank_start]Step 4:[blank_end] Ministry of Labour inspector is called [blank_start]Step 3:[blank_end] Supervisor investigates safety hazard [blank_start]Step 1:[blank_end] Work is refused to to a perceived safety hazard
Answer
  • Step 1:
  • Step 2:
  • Step 3:
  • Step 4:
  • Step 1:
  • Step 2:
  • Step 3:
  • Step 4:
  • Step 1:
  • Step 2:
  • Step 3:
  • Step 4:
  • Step 1:
  • Step 2:
  • Step 3:
  • Step 4:

Question 35

Question
What are supervisors responsible according to the Internal Responsibility System?
Answer
  • Training workers in OHS
  • Making sure workers follow the law and company safety rules
  • Keeping records of work injuries
  • Telling workers about job hazards

Question 36

Question
What is an employer not legally obliged to provide?
Answer
  • Training
  • Health and Safety policy
  • Uniforms
  • Safety guards on machinery
  • Health benefits

Question 37

Question
In Ontario, workplaces with less than 20 workers must have a Worker Health and Safety Rep that is selected by the workers.
Answer
  • True
  • False

Question 38

Question
For a due diligence defense, and OHS system must be in place and operating effectively. Which of the following meets the requirements for an effective OHS system?
Answer
  • Hiring employees who have experience in a particular activity
  • Posting notices of safety rules on the JHSC bulletin board
  • Encouraging employees to work safely
  • Monitoring the workplace to ensure compliance

Question 39

Question
The absorption rate of toxic substances through the skin is greater on the forehead than on the abdomen.
Answer
  • True
  • False

Question 40

Question
The TLV-TWA for nuisance dusts in the workplace is 10 mg/m3. What would be the STEV and CEV
Answer
  • STEV = 10 mg/m3, CEV = 20 mg/m3
  • STEV = 20 mg/m3, CEV = 35 mg/m3
  • STEV = 30 mg/m3, CEV = 50 mg/m3
  • STEV = 40 mg/m3, CEV = 80 mg/m3

Question 41

Question
Sulphide ores are [blank_start]an explosive[blank_end] hazard. Radon gas is [blank_start]a carcinogenic[blank_end] hazard. Lead is [blank_start]a toxic[blank_end] hazard. Silica is [blank_start]a fibrogenic[blank_end] hazard. Limestone is [blank_start]a nuisance[blank_end] hazard.
Answer
  • an explosive
  • a carcinogenic
  • a toxic
  • a fibrogenic
  • a nuisance
  • a carcinogenic
  • an explosive
  • a toxic
  • a nuisance
  • a fibrogenic
  • a toxic
  • a carcinogenic
  • an explosive
  • a nuisance
  • a fibrogenic
  • a fibrogenic
  • a toxic
  • a carcinogenic
  • a nuisance
  • an explosive
  • a nuisance
  • a toxic
  • a fibrogenic
  • an explosive
  • a carcinogenic

Question 42

Question
A mine drift with ventilation flow of 15 m3/sec and a radon progeny concentration of 0.6 WL. What airflow is required to dilute it to 0.33 WL.
Answer
  • 5 m3/sex
  • 10.9 m3/sec
  • 20.7 m3/sec
  • 45.3 m3/sec
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