Exam Prep Flashcards

1
Q

List the characteristics of a hazardous Material

A

Chemical or biological agents
Prevalent in the workplace
Has a history of causing occupational disease
Tend to be recognized by most workers/public
Have received significant media coverage
Perceived risk often higher than actual risk
Often governed by prescriptive regulation
Subject to regulatory oversight
Often produce anxiety in the workplace
Exposure control strategies generally well developed
Transportation highly regulated

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

List & describe the four functions of a manager.

A

POLC (aka PLOC)

Plan work
Organize work
Lead the team in the work
Control the work

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Briefly describe the roles of federal and provincial/territorial governments in regulating hazardous materials.

A

The Canadian Constitution assigns responsibility for regulating certain things to provincial/Territorial governments and certain other things to the federal government.

Provincial
Safety of workers exposed to HM
Disposal of HM within the province

Federal
Safety of workers exposed to HM in federally regulated workplaces
HM disposal outside of Canada
Transport of HM by road/rail/ship/aircraft (note, road transport is delegated to provincial ministry)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Describe an exposure control plan as required by Canadian OHS law.

A

(a) a statement of purpose and responsibilities;
(b) risk identification, assessment and control;
(c) education and training;
(d) written work procedures, when required;
(e) hygiene facilities and decontamination procedures, when required;
(f) health monitoring, when required;
(g) documentation, when required.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Define hazardous material

A

HM is not defined in any Canadian OHS law. Other sort-of-related terms like hazardous product, controlled product and designated substance are defined in OHS law but not HM.

Canadian OHS laws are filled with regulations related to prevention of adverse worker exposure to materials that are hazardous to their health.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

List the elements of a WHMIS program.

A

Worker Education & Training
Supplier Labels
SDS

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Describe the information elements of WHMIS as a results of completing a standard WHMIS education course.

A

Basic understanding of the WHMIS program in the workplace

How to recognize and use WHMIS information

Major hazards of products in the workplace

Rights and responsibilities of employers and workers

Required contents of labels and SDS sheets including how to understand pictograms and terms.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Compare and contrast WHMIS education and WHMIS training.

A

WHMIS education teaches workers about the WHMIS system and hazards. The focus is on the WHMIS system.

WHMIS training trains workers how to safely work with the hazardous materials and what to do in the event of a problem. Training is specific to the materials and work being done.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Define acute

A

Sudden onset, brief duration, or short exposure.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Define carcinogen

A

A hazardous material that may cause cancer.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Define “chemical name”

A

A scientific designation of a substance made according to a set of rules and internationally recognized.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Define chronic

A

Gradual/prolonged onset, long-term duration, or repeated exposures.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Define corrosive material

A

A material that is liable to destroy or damage another material by chemical action.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Define IDLH

A

Immediately Dangerous to Life or Health
Used related for respirator selection.
The airborne concentration that poses a threat of death or permanent adverse health effects upon exposure.

Workers must have means of escape from environment in case of respirator failure.
When levels greater than IDLH, highly reliable breathing apparatus required.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Define skin irritatants

A

A material that may cause an allergic skin reaction after contact with skin.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Define skin irritatant

A

A hazardous product that may cause reversible damage to the skin such as redness, itching, or swelling.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

What are the four WHMIS test questions?

A

What are the hazards of the product?

How are you protected from those hazards?

What do you do in case of an emergency?

Where can you get further hazard information?

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

What important information can be found on an SDS sheet?

A

Material hazards.

Recommended controls (engineering, administrative, PPE).

First aid and spill response recommendations.

Additional: disposal information, contact information, manufacturer information.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

List differences between WHMIS 1988 and WHMIS 2015.

A

Different symbols/pictograms

MSDS are now SDS with new standard format

There is a new classification system for controlled/hazardous products.

There is a new grouping system for hazards.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

Name the most common forms of asbestos and types of asbestos-containing materials found in Canadian workplaces.

A
Chrysotile (most common)
Amosite
Crocidolite
Tremolite
Actinolite
Anthophyllite

Floor tiles, ceilings, brake pads, insulation, ship building.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

List diseases associated with overexposure to asbestos fibres.

A

Pneumoconiosis and cancer (mesothelioma, lung cancer, GI cancer).

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

Describe the methods most commonly used to manage asbestos-containing material in place.

A

Inventory of ACM

Decision on fate of ACM (manage or remove/abate)

Managing in place

Removal/abatement

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

What is asbestos?

A

Asbestos is a commercial term that includes six regulated asbestiform silicate minerals (silicon + oxygen).

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

What percentage of asbestos in a material does WorkSafeBC require for it to be designated as asbestos-containing?

A

1% per course (0.5% per OHS reg).

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
Q

Recognized occupational causes of pneumoconiosis

A

Silicosis
Asbestosis
Other

26
Q

What is required to inventory ACM?

A
Determine:
What kinds of ACM are present
Where?
Quantity?
Condition of the ACM.
27
Q

When should asbestos be abated (removed)?

A

When ACM risk is high and easily accessible to workers or the public. Examples commonly include fire insulation because it was extremely friable.

When ACM has a moderate or high risk and enclosure or encapsulation is not feasible.

When the perceived risk of ACM is unacceptable and abatement will address worker or public concerns.

28
Q

What is white asbestos?

A

Serpentine minerals - Chrysotile are known as white asbestos.
It is the most commonly used asbestos (~90% of world use).
Wavey/curly fibers.

29
Q

What is amphibole asbestos?

A

The other 5 asbestos fibers
Amosite, crocidolite, tremolite, actinolite, anthophyllite.
Straight, rod-like fibers.

30
Q

What are the three most common types of asbestos?

A

Chrysotile (white asbestos)
Amosite (brown/grey asbestos)
Crocidolite (blue asbestos)

31
Q

How is testing performed to test for asbestos?

A

Bulk sampling.

  • Safe collection technique/sealing
  • Sent to lab (1-10g)
  • polarized microscopy
32
Q

How is asbestos classified in Canadian OHS law?

A
Form of ACM
Type of asbestos fibers
Percentage of asbestos in material
Friability of ACM
Amount and location of the ACM

This all determines whether it is low/medium/high risk.

33
Q

List five sources of inorganic lead and work activities where exposure may occur.

A

Lead-acid batteries, automotive repair

Lead solder - Jewlers or electricians soldering

Lead containing ore - foundry/refinery workers

Firearm ammunition - Police, shooting ranges

Lead paint, panels, tiles, piping - Demolition/renovation/lead abatement workers

34
Q

Explain how lead dust and fume enters a workers’ body.

A

Inhalation and ingestion.

Breathing dust or fumes
Lead contaminated food/drink
Nail biting with lead on hands and other habits of putting objects in mouth

Organic lead can be absorbed through the skin (some pesticides)

35
Q

Describe the health effects of acute and chronic exposure to inorganic lead.

A

The health effects from lead are the same regardless of the source or route of exposure.

Early lead toxicity symptoms are non-specific and can be difficult to recognize.

Acute toxicity can cause lethargy, headache, hyporexia, metallic taste.

Chronic toxicity can cause abdominal pain, constipation, muscle/joint pain, memory problems.

Lead toxicity can cause neuropathy, GI Dz, renal Dz, reproductive Dz. Also carcinogenic.

36
Q

List and describe the elements of a lead exposure assessment.

A

1, Identification of sources of inorganic lead in the workplace.

2, Observation of work activities to determine which practices expose workers to lead inhalation or ingestion.

3, Hierarchy of controls. Where exposure cannot be eliminated, air monitoring and surface sampling necessary to determine exposure levels.

4, Health monitoring, often including blood sampling, should be implemented where practicable.

37
Q

What is organic lead? what is inorganic lead?

A

inorganic or elemental lead is just lead. Organic lead is a combination of lead and carbon.

38
Q

List 5 common products manufactured using lead.

A

Lead-acid batteries

Lead-paint on roads

Lead-containing weapons/ammunition

Decorative glass

Protective coating on underwater cables

39
Q

Differentiate fumes vs vapours.

A

Vapours are gaseous. Solids heated turn to liquid and then gas. A gas rising from a heated liquid is a vapour.

Fumes are small solid particles suspected in the air. Smoke is a fume.

When lead is heated, it melts, some lead may be vapourized and turn into a gas. In the air, the lead vapour cools and forms particles in the air - now a fume.

40
Q

Removal of which two hazardous materials does WorkSafeBC require 48 hours notice in advance?

A

Asbestos and lead.

41
Q

List two physical forms of lead that can enter a worker’s body.

A

Fine dust and fumes.

42
Q

List 5 similarities between asbestos and lead OHS regulations

A
  • Exposure control plan requirements
  • Air monitoring requirements
  • Highly prescriptive methods of removal
  • Removal risk classification levels
  • Notice of project requirements
43
Q

List 5 legal methods for the removal of lead-based paint/coatings.

A
Chemical strippers
Manual scraping
Heat guns
Water jet blasting
Dry ice blasting
Specific dry abrasive blasting
Wet abrasive blasting
44
Q

What is a toxic process gas?

A

A gas that meets criteria in Canadian federal HPR (Hazardous Product Regulation).

Category 1, 2, or 3 for acute toxicity and is used in one of the following:

1, Part of an industrial process
2, Refrigeration
3, Material treatments (such as disinfection systems)

Specifically:
Anhydrous ammonia, chlorine gas, and sulfur dioxide.

45
Q

What is Process Safety Management?

A

Important:
“PSM is an analytical tool used to prevent the release of substances defined as highly hazardous chemicals”

It is the formal process of assessing and controlling OHS issues created by process lines.
(Developed by OSHA)

Typical examples would include large scale industrial processes where each individual component has a direct impact upon the other components. This can lead to hazards when there is a change to any 1 component of the overall process.

46
Q

What elements make up a typical process safety management plan?
Name at least 6.

A
Process Safety Information
Process Hazard Analysis
Operating Procedures
Training
Contractors
Mechanical Integrity
Hot Work
Management of Change
Incident Investigation
Compliance Audits
Pre-startup safety review
Emergency planning and response
Trade secrets
Employee participation
47
Q

What are common uses of ammonia in the workplace?

A

Refrigeration
Fertilizer
Component in industrial production.

48
Q

What are the effects of overexposure to ammonia?

A

Irritation of nose and throat.

Coughing, shortness of breath, tightness of chest.

Burns to the eyes, nose, throat (anywhere with moisture).

Pulmonary edema.

49
Q

What is the federal HPR?

A

Hazardous Product Regulation

Federal legislation that is related to WHMIS and toxic process gas. This regulation is referenced for definitions in BC OHS Regulation.

50
Q

What is a process flow diagram?

A

A display of the relationship between major equipment/processes.

A simple diagram that depicts processes and how they are related in a larger design. It does not provide details of how each process functions or specifically how different components are connected (rather it shows that they are and in what direction).

Commonly used in chemical and process engineering.

51
Q

What is a piping and instrumentation diagram/drawing?

A

A P&ID is a diagram that shows specifically how different components in an industrial process are connected and controlled.
There are standards symbols for these schematics.

52
Q

What is anhydrous ammonia?

A

NH3.

A gas at room temperature, often stored under pressure as a liquid.

Anhydrous = without water (no water added)

Aqueous ammonia is ammonia with water (such as household ammonia cleaner). Risks associated with aqueous ammonia are relatively low.

53
Q

Discuss how ammonia refrigeration system safety is governed by OHS and related laws in BC.

A

Ammonia refrigeration systems are a concern because they contain large quantities of anhydrous ammonia, they are typically in large urban areas, and they are complex mechanical systems with potential for failure.

WorkSafeBC has a combination of performance-based and prescriptive regulations for all toxic process gases

Technical Safety BC has detailed prescriptive regulations for boilers, pressure vessels, and refrigeration systems. These include:

  • Mandatory standards of equipment design
  • Mandatory standards of equipment installation
  • Qualified operators and maintenance staff
54
Q

What workplaces and work processes commonly use chlorine?

A

Disinfectant (swimming pool, water treatment plant, sewage treatment, community water supplies)

Also used in some manufacturing:
Pulp/paper industry, pool chemical products, cleaning products, mining processes, bleach manufacturing, plastics manufacturing.

55
Q

What are health effects of chlorine overexposure?

A
  • Nose/throat irritation
  • Pulmonary edema
  • Coughing, shortness of breath, dyspnea
  • Onset of chronic asthma
  • Corrosive burns (skin/eyes)
  • Cold injuries with liquid contact
56
Q

How are bulk quantities of chlorine usually transported?

A

Large pressurized containers on rail cars or tank trailers.

Alt - large volume pressure cylinders.

57
Q

What is required for day-to-day safe work procedures when working with chlorine?

A

OHS and public safety regulators have regulations that require/enforce:

Design standards for equipment
Design standards for facilities
Qualification for workers
Safe work procedures for work and emergency response
Exposure control plans
58
Q

What is anhydrous chlorine?

A

Chlorine, Cl is a diatomic molecule. Meaning that there are two atoms in one molecule: Cl2.

It is a gas at room temperature, and often stored under pressure to store in liquid form (anhydrous chlorine).

Sodium hypochlorite is a solid powder that can be dissolved into water to make bleach. Some chlorine gas is released from sodium hypochlorite/bleach in quantities that are generally considered to be safe.

59
Q

What is the Transport Canada Emergency Response Guide?

A

The ERG is a reference guide that categorizes hazardous materials and gives important information on each category.

The information provided for each category is reliable and useful for the development of safe work and emergency procedures.

60
Q

What certification/training is legally required for persons working with chlorine in Canada?

A

There are several good certification/training programs in Canada.
These programs are not required by any prescriptive legislation.
Legislation does require that workers be “qualified” and so due diligence requires that these programs of an equivalent be used.