2320 Personal Protective Equipment Flashcards

1
Q

Compare/contrast protective headgear CSA classes G, E, and C.

A

All CSA Z94.1 headwear is:

  • resistant to blunt-force impact
  • resistant to penetration by pointed objects
  • avoid degradation in heat & bright light
  • passively retained on the head
  • must identify electrical performance class inside shell

Class C = conductive
Class G = general use (resistance of 2,200 V)
Class E = electrical trades (resistance of 20,000 V)

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2
Q

What are the 7 CSA classes of eye and face protector?

A
1, Spectacles
2, Goggles
3, Welding helmets
4, Welding hand shields
5, Non-rigid hoods
6, Face shields
7, Respirator facepieces
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3
Q

Discuss CSA grade 1 and 2 protective footwear.

A

CSA Grade 1 protective footwear provides maximum toe impact protection, with sole penetration protection.

Grade 2 provides toe impact protection (lower level protection than grade 1) and sole penetration protection (equal protection to grade 1)

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4
Q

What is a reasonable process for the selection of high-visibility garments for use in the workplace?

A

1, Determine the nature of the work/hazards.
(directing traffic under 30kph)

2, Review regulation/standard to determine minimum requirement
Type 1, 2, 3?

3, Consult workers/supervisors to determine most appropriate style
(if multiple types acceptable, which is preferred?), (which colour better, orange vs lime green?), (what about differing weather conditions?)

4, Work with suppliers to source garments that comply with regulations and meet workers needs

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5
Q

What are the CSA Z94.2 HPD classes?

A

Based on sound attenuation, HPDs are placed into three classes, A, B, and C.

A, attenuates 10dB at 125Hz, up to 33 dB at 8000Hz. 31dB at 1000Hz.

B, attenuates 5dB at 125Hz, up to 23dB at 8000Hz. 21dB at 1000Hz.

C, is not required to attenuate sound until 1000Hz, at which time it must attenuate 11dB, up to 13dB at 8000Hz.

**there are two special extra classes, AL and BL.
These are used for devices that qualify as category A or B AND provide at least 20dB attenuation at 125Hz (low frequency protection)

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6
Q

What is the required process for selecting the class, grade and style of hearing protection for workers?

A

Bigger is not better. Too much protection interferes with work and reduces compliance. Too little protection, fails to protect.

1, perform noise exposure monitoring to determine hazard.

2, Use standard to select appropriate class/grade of protection.

3, Identify suitable options based on work and workplace (temperature, activities)

4, consult with JOHSC/workers/supervisors for input/preference.

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7
Q

Explain the need for a professionally managed PPE program in the workplace.

A

The appropriate PPE needs to be identified for the hazards of the work.

PPE can interfere with work and comfort. Use when not needed may reduce compliance.

Workers need to know how PPE protects them, and what the limits are. Otherwise they may think they have more protection than they do.

PPE must be maintained, cared for and replaced to ensure it is functioning properly.

If workers and supervisors are not educated/trained in appropriate selection and use of PPE, then they will not choose to use the appropriate PPE.

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8
Q

What 5 indicators suggest an organizations PPE is not effectively managed?

A

1, PPE decisions are made by the purchasing department, primarily based on cost.

2, Workers are routinely asked to wear PPE, although risk assessment shows that it is not necessary.

3, Workers have little knowledge about their PPE limitations when asked.

4, There is little evidence of a program for PPE upkeep and maintenance.

5, Managers and supervisors are unaware that there are critical choices to be made in the selection of basic PPE (headgear, footwear)

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9
Q

What are typical PPE requirements in Canadian OHS regulations?

A

1, Workers may be required to provide PPE against natural elements

2, All other PPE must be provided by the employer, at the employer’s cost.

3, Employers must be knowledgeable about hazards and the range of PPE available. PPE selection must be chosen based on this information.

4, Most PPE must meet CSA standards, or another acceptable standard.

5, Employers require a program for maintenance/repair/replacement of PPE.

6, Employers must educate workers about limitations of PPE.

7, A written PPE program should be developed for all PPE. It is required for certain types of PPE.

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10
Q

List some CSA standards for PPE.

A

CSA Z94.1 - Industrial Protective Headgear

CSA Z94.2 - Hearing Protection Devices, performance, selection, care, and use

CSA Z94.3 - Industrial eye and face protectors

CSA Z94.4 - Selection, use, and care of respirators

CSA Z195 - Protective footwear

CSA Z195.1 - Selection, care, and use of protective footwear

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11
Q

What are the eight hazards that CSA eye and face protectors protect against?

A
1, Flying objects
2, Flying particles/dust
3, Molten material and sparks
4, Chemical splash
5, Abrasive blasting material
6, Glare and stray visible light
7, Optical radiation (UV, light, infrared) - moderate reduction
8, Optical radiation - large reduction
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12
Q

What are the 6 hazards that CSA Z195 footwear protection may protect against?

A
1, Toe impact
2, Sole penetration
3, Metatarsal impact
4, Electrical shock
5, Electrical charge build-up
6, Chainsaw cut

footwear will protect against two or more, but never all of the 6 hazards

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13
Q

What are the 6 hazards that CSA Z195 footwear protection may protect against?

A
1, Toe impact
2, Sole penetration
3, Metatarsal impact
4, Electrical shock
5, Electrical charge build-up
6, Chainsaw cut

footwear will protect against two or more, but never all of the 6 hazards

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14
Q

How are protective footwear identified?

A

The footwear must have a sewn on label depicting designated markings that indicate the specific protections.

The same information must be printed on the inside of the shoes/boots.

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15
Q

What is the difference in safety equipment with comparable safety ratings when there is a significant price difference.

A

The price may indicate additional features, comfort, or durability. It does not indicate that the equipment is more or less protective than a cheaper alternative with the same safety rating.

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16
Q

Should protective headgear (hard hats), and high visibility clothing be worn at all times by all workers on a work site?

A

Not necessarily. Protective equipment should be worn when indicated by hazard assessments and risk evaluations.
When PPE is worn, it should be worn for a reason and the worker should understand what that reason is and what the limits of the protection are.

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17
Q

What legislation governs PPE?

A

Provincial OHS regulations usually reference known standards, such as CSA standards. Sometimes regulators will develop their own standards instead of or in the absence of pre-existing standards.

BC OHSR Part 8, Personal Protective Clothing and Equipment

also, work activity specific legislation (such as BC OHSR part 18, traffic control - section 18.9 & 18.10)

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18
Q

What are the WorkSafeBC Standard types of high visibility garment?

A

Type 1, vest/shirt/similar

Type 2, jacket/coat/coveralls/similar

Type 3, harness/harness affixed to another garment (such as a harness stitched to a vest)

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19
Q

Discuss OHS regulations for HPDs.

A

All Canadian OHS regulations have similar provisions for Hearing Protection Devices.

HPDs may only be used when all reasonable engineering and administrative controls have been implemented and noise levels remain above exposure limits.

A professional process must be used to select HPD that are appropriate for the amount and type of noise present.

BC OHS Regulation, Part 7

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20
Q

List four CSA Z94.2 recognized HPD devices.

A

Earplugs

  • foam/rolldown
  • pre-moulded
  • formable
  • custom moulded
  • semi-insert/canal cap (superaural)

Earmuffs

  • headband
  • hardhat attached

Helmets (such as for pilots)

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21
Q

How does the CSA assign a class or grade to hearing protection?

A
The class of a HPD is based on the dB attenuated, based on the sound frequency in Hz.
A being the highest protection, C the lowest.

The grade of a HPD is based on the attenuation achieved with 84% of workers (evaluating fit). Grade 0 is the lowest, and grade 4 is the highest protection.

22
Q

What are the CSA Z94.2 HPD grades?

A

If 84% of workers, when fitted with the device achieve ≤9dB sound reduction outside, then they device is grade 0.

If 84% of workers, when fitted achieve ≥22dB sound reduction, then the device is grade 4.

Grade 1 is 10-13
Grade 2 is 14-17
Grade 3 is 18-21

23
Q

How is hearing protection rated in the USA?

A

Noise Reduction Rating, in dB.

24
Q

How much noise is OK?

A

Sound below 70dB may be too low. If overprotection reduces sound to this level, then it may interfere with work.

Ideally, sound levels should be 75-80dB.

Sound greater than 85dB carries an increasing risk of hearing loss.

25
Q

What is the “permeation rate”?

A

The rate at which a chemical passes through a glove or clothing material.

26
Q

What is “breakthrough time”?

A

The elapsed time between contact with a chemical on the outside of a glove/garment and the time that the chemical is first detected on the inside.

Example, acetone has a fast breakthrough time with nitrile gloves, but a slow breakthrough time with butyl rubber gloves.

27
Q

Where can an OHS professional find information on the most suitable material for protection against chemicals?

A

The best information is found on the SDS sheet.

There are also a variety of published guides that can supplement the SDS.

28
Q

What are the 5 classes of materials for protective gloves/garments?

A

1, Natural rubber (latex)
2, Synthetic rubber (butyl, neoprene, nitrile, viron)
3, Synthetic polymers (Tyvek, Silvershield, CPF)
4, Polyvinyl alcohol (PVA)
5, Other materials (Polyvinyl chloride, PVC)

29
Q

What are the 4 main hazard types to consider for protective gloves and clothing?

A

Chemical hazards

Biological hazards

Physical hazards (temperature, vibration)

Mechanical hazards

30
Q

Discuss considerations for protective gloves/clothing against biological agents.

A

Typically gloves/clothing to protect against biological agents are used in medical workplaces. As such, there is a need to protect against bodily fluid exposure and cuts/punctures. There is a need to allow for manipulation of fine instruments.

Natural latex used to be the material of choice, but it is now synthetic nitrile rubber due to people with allergies.
Vinyl is popular as an inexpensive option, although the properties lead to a poorer fit.

31
Q

Discuss considerations for protective gloves against physical vibration hazards.

A

Vibration can cause HAVS (Hand-Arm Vibration Syndrome).

Many gloves marketed as anti-vibration do not do what they claim, and some increase risks.

There are standards for anti-vibration gloves, but they are not referred to in any North American legislation (they are in areas of Europe).

32
Q

Discuss gloves to protect against cuts and abrasions.

A

Leather, heavy cotton, and mixtures of both are most commonly used to protect against cuts and abrasions.
The standard ‘work glove’.

Stainless steel can be incorporated into gloves to protect more against cuts, particularly with metal work, meet cutting, and other higher risk activities.

Kevlar has become an alternative/popular inexpensive material that protects against cuts and puncture without absorbing a lot of water.

Protective gloves may have grips added, such as dots/strips of neoprene to improve grip. Especially with Kevlar gloves because the material is slippery.

33
Q

Discuss leg protective devices.

A

Commonly called chaps, or chainsaw pants.

There is no Canada-wide standard for leg protective devices. BC has it’s own standard in part 8 of the OHSR, which some other regulators recognize.

Chaps often work by containing loosely woven fibers behind a barrier that, when broken, rapidly bind the teeth of a chainsaw while also forming a barrier between the chain and the leg.

34
Q

What are the four general categories of hazard that respirators might protect against?

A

Chemical agents

Biological agents

Ionizing radiation attached to particulate material

Oxygen deficiency

35
Q

What is an APR respirator?

A

An Air Purifying Respirator uses a filter or cartridge to clean air before it is breathed in.

36
Q

What are the types of respirator?

A

APR, non-powered

  • half-face
  • –filtering facepiece (mask is filter)
  • –elastomeric (uses filters/cartridges)
  • full-face
  • –always elastomeric

APR, powered (PAPR)

  • half-face elastomeric
  • full-face elastomeric
  • hood
  • helmet
  • loose-fitting facepiece

Air-supplying respirators

  • Supplied-air (airline)
  • Self-contained breathing apparatus (SCBA)
  • Combination, supplied with auxiliary self-contained supply

Escape Respirators
(may be APR or ASR)

37
Q

Discuss filters and cartridges for respirators.

A

Filters a made of a fibrous material that traps particles as you breathe. This mechanically filters the air.

Cartridges contain sorbent materials, chemicals, or both.

Sorbent materials (activated charcoal) bind to contaminants to remove them from the air. Chemicals react with specific air contaminants to alter their composition.

Some respirators can be fitted with multiple cartridges for multiple functions.

38
Q

What is NIOSH?

A

National Institute for Occupational Health and Safety (US agency)

39
Q

What respirators are approved for use in BC?

A

All respirators must be NIOSH approved and unmodified unless they have been specifically approved by WorkSafeBC use.

WorkSafeBC does not accept single-strap “dust masks”. They must all have two or more straps for secure fit.

40
Q

Discuss particulate filters

A

NIOSH filter types:

N = not oil resistant
R = oil resistant (OK for 1 shift with oil)
P = oil-proof (OK for more than 1 shift with oil)
Efficiency:
95 = 95%
99 = 99%
100 = 99.97% (aka HEPA)
High-Efficiency Particulate Air filter
41
Q

List four examples of contaminants where WorkSafeBC requires HEPA filter respirators.

A

Asbestos
Lead
Hantavirus
Cadmium

42
Q

What are TWA and ceiling limits?

A

The ceiling limit is the absolute maximum concentration (ppm) of a substance that a worker may be exposed to.

The TWA, Time-Weighted Average, is the maximum average concentration that a worker may be exposed to over an 8-hour period.

43
Q

When should an air-supplying respirator be used?

A

When there are high levels of contaminant.

When contaminants are highly toxic.

When the contaminant has poor warning qualities and end-of-life cartridge indicators for APR are unavailable.

When cartridges/filters are unable to effectively remove the contaminant (nitrogen dioxide, nitric oxide, nitrous oxide)

44
Q

Discuss respirator Protection Factor (PF)

A

aka APF, Assigned Protection Factor

NIOSH and ANSI perform standard tests to measure the ability of a respirator to reduce contaminants.

The PF (protection factor) is the ratio between contaminant in exposure air and purified air.

If contaminant is 100ppm, and purified is 10ppm, then the ratio is 100:10, 10:1. PF =10.

If contaminant is 1000ppm, and purified is 10ppm, then the ratio is 1000:10, 100:1. PF =100.

If contaminant is 50,000ppm, and purified is 100ppm, then the ratio is 50,000:100, 500:1. PF =500.

45
Q

What are the two basic types of respirators?

A

Air purifying

Air supplying

46
Q

What are the two basic types of AS respirator?

A

Airline

SCBA

47
Q

Discuss regulations for respirators.

A

Respirators are often highly regulated in provincial OHS regulations. Part 8, BC OHSR.

Respirators must meet published standards, also selection of respirators and it testing must also meet published standards.

There are no Canadian agencies that approve respirators, and NIOSH is usually used.

48
Q

List the steps to choosing a respirator.

A

1, Hazard identification

2, Check hazard concentration

3, Compare hazards/concentrations with exposure limits

4, Check IDLH concentration

5, Check hazard properties and select possible respirator types
(eye irritant? skin irritant?)
[use SDS to help]

6, Check APF (assigned protection factors)

7, Compare APF needed, to APF of identified respirators

8, Compare MUC (maximum use concentration) to the contaminant concentration.

9, Identify the general class of respirator required (ASR vs APR)

10, What is the state of the contaminant? (gas/vapour, particulate, both)

11, What are the warning properties of the contaminant? (smell, etc.)

12, Select the appropriate filter/cartridge.

13, Are there any special requirements?

  • worker comfort
  • work activity needs
  • worker with corrective lenses
49
Q

What is a respirator MUC?

A

Maximum Use Concentration

Determined by multiplying the respirator’s APF (assigned protection factor) by the TWA.

This indicates the maximum contaminant the respirator is demonstrated to be effective against.

50
Q

Discuss user seal or fit checks for respirators.

A

Every time a worker uses a respirator, they should conduct user seal check (aka fit check).

Both a negative and positive pressure test should be performed, unless the respirator resign prevents one of these being done.

Negative Check
Block the valves etc. and inhale slightly. Hold for 10s. Ensure no leaks.

Positive Check
Block valves etc. and exhale slightly. Hold for 10s. Ensure no leaks.

51
Q

Discuss Mask Fit Testing

A

Qualitative and quantitative tests possible. Required at least annually.

Quantitative requires special equipment to measure concentrations of contaminant in/out of mask.

Qualitative more common. Three main methods.
1, Odour Test
Banana oil - tests cartridges, not filters
(vapour, not irritating, pleasant odour, easy to use, can be a problem with latex allergy)

2, Irritation Test
Irritant Smoke
(fume, easy to use, highly irritating)

3, Taste Test
Bitrex and Saccharin
(Messy, a test hood is required)