Safety Test Review

Question 1

What does WHMIS stand for?

Answer 1

Workplace Hazardous Materials Information System

Question 2

What are the 4 routes of entry?

Answer 2

-Inhalation
-Skin Contact
-Ingestion
-Injection

Question 3

How often must you update your SDS?

Answer 3

Every 3 years

Question 4

How many sections are in the SDS?

Answer 4

16

Question 5

How does the Ministry of Education define “Duty of Care”?

Answer 5

Prudent Parent

Question 6

The ‘Fire Triangle’ is made up of what 3 components?

Answer 6

Heat, Fuel, Oxygen

Question 7

Give an example of a potential fire hazard in the shop:

Answer 7

-Flammable liquids/gases
-Oily rags
-Paper and wood products (wood shavings)
-Electrical apparatus

Question 8

Does metal burn? (give an example)

Answer 8

Yes
-Steel wool
-Magnesium (very brightly)
-Titanium

Question 9

Define/Explain: Fight or Flight (+Freeze)

Answer 9

In an emergency, you can lose 50% or more of your cognitive ability

-Chances are better of doing the right thing if you have rehearsed (fire drill)

Question 10

What does RACE stand for?

Answer 10

R emove people (students)
A ctivate Fire Alarm
C all 911
E xtinguish

Question 11

What are the contents of the 4 types of Fire extinguishers? (A, B, C, D) and for what applications?

Answer 11

A - Pressurized water
(Used for normal combustibles such as paper, wood, cloth, anything that burns or creates ash, etc.)

B - Dry chemical powder (sodium bicarbonate)
(Used for combustible liquids such as oil, gasoline, solvents and tars)

C - Carbon Dioxide (CO2)
(Used for fires involving electrical equipment or either of above classes)

D - Sodium Chloride *A bucket of sand will do in a pinch
(Used for flammable metals such as Magnesium and Titanium Sodium)

Question 12

What does PASS stand for? (when using a fire extinguisher)

Answer 12

Pull
Aim
Squeeze
Sweep

Question 13

How many feet away do you stand when using a fire extinguisher?

Answer 13

10ft away

Question 14

Where is the exit when using a fire extinguisher?

Answer 14

Exit is to your back
(so you can leave safely in the event of needing to flee/evacuate)

Question 15

What does LD50 mean? Explain

Answer 15

-Lethal Dose 50 (LD50) is the amount of an ingested substance that kills 50 percent of a test sample. It is expressed in mg/kg or milligrams of substance per kilogram of body weight.

-Measures the short-term poisoning potential (acute toxicity) of a material

Question 16

What does Lethal Concentration mean? Explain

Answer 16

Lethal concentration (LC50) of a chemical (usually in the air) that kills 50% of the test animals during the observation period (usually 4 hours)

Question 17

What are some factors from the Fight-or-Flight check list:

Answer 17

-The building is being evacuated (fire alarm is pulled)
-The fire department is being called (dial 911)
-The fire is small, contained and not spreading beyond its starting point
-The exit is clear, there is no imminent peril and you can fight the fire with your back to the exit
-You can stay low and avoid smoke
-The proper extinguisher is immediately at hand
-You have read the instructions and know how to use the extinguisher

Question 18

What is the maximum permissible peak noise? (dBC)

Answer 18

140 dBC

Question 19

What is the name of the spiral part of you ear?

Answer 19

Chochlea

Question 20

What lines the Choclea? (we are trying to protect)

Answer 20

Hairs

(flatten after exposure to exessive noise)

Question 21

Name 2 types of ear protection

Answer 21

-Earmuffs
-Earplugs / Ear caps (+disposable earplugs)

Question 22

Are all disposable earplugs created equally?
(dB rating)

Answer 22

No

-be sure to check the manufacturer rating to know you have the correct protection for your scenario.

Question 23

Explain some factors for a properly fitting earplug

Answer 23

-You need the right size plug for your ear canal;
your ears may even need two different sizes. If the plug doesn’t make a good seal in your ear canal, it won’t protect your hearing.
-If the plug feels tight at first, it’s probably
a good fit. If it feels loose, it’s too small.
-When a plug is properly fitted, your voice sounds lower and muffled as though
you were in a barrel
-Movement, talking and chewing can all loosen the plugs, so take them out
and refit them several times during the day.

Question 24

Explain some factors for a properly fitting ear muff:

Answer 24

-It must be a good fit.
- Push your hair back so the cuffs fit comfortably and make a good seal around your ear.
- Make sure the cuffs aren’t resting on anything that will break the seal and let noise in, such as a hardhat suspension band, hair band or barrette.
- If you wear glasses, try wearing the kind with thin wire temple pieces

Question 25

From James’ slides and maybe important:
‘A’ weighting, filters out the low frequencies and slightly emphasises the upper middle frequencies around 2-3 kHz.
By comparison, ‘C’ weighting is almost unweighted, or no filtering at all.

Answer 25

: )

Question 26

3 Basic elements of WHMIS

Answer 26

Labels
SDS (Safety Data Sheets)
Education

Question 27

Respiratory Protection Acronym SCBA stands for:

Answer 27

Self Contained Breathing Apparatus

helpful tip: In SCUBA, U = underwater!

Question 28

Successfully trained students should be able
to answer these 4 key questions about WHMIS/SDS:

Answer 28

-What are the hazards of the product you are using?
-How do you protect yourself?
-What should you do in case of an
emergency or spill?
-Where do you get more information on this product?