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Intro To Environmental Health And Safety > Respirator > Flashcards

Respirator Flashcards

1
Q

When are respirators needed?

A
  • use only when engineering controls
  • in an oxygen deficient atmosphere
  • When chemical permissible exposure limits (PEL) are exceeded
  • When required by a pesticide label
  • in situations where air contamination is suspected, but levels are unknown (confined spaces, large, chemical spills, hazardous waste sites)
  • When you require it by company policy
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2
Q

What is oxygen deficiency?

A
  • oxygen deficiency can occur in confined or enclosed spaces, during fires or large chemical releases
  • Normal air contains 21% oxygen
  • an area with oxygen conte below 19.5% is considered oxygen deficient
  • Only a supplied air, respirator can protect against the effects of oxygen deficiency
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3
Q

What are permissible exposure limits (PELs)?

A
  • most chemicals and dust have limits in the air that will cause adverse health effects if exceeded
  • if airborne levels cannot be reduced below these limits by other means, respirators must be provided to protect exposed employees
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4
Q

What are they types of respirators?

A
  1. Air purifying respirators
  2. Powered air purifying respirators
  3. Airline respirators
  4. Self contained, breathing apparatus (SCBA)
  5. Escape respirators
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5
Q

What are air purifying air respirators?

A

filters, air through cartridges or filtering face pieces (dust masks)

  • traps air contaminants in a cartridge or filter when the wearer inhales
  • Particulate respirators capture dust, mist, and welding fumes
  • Chemical cartridge respirators capture gases, and vapors
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6
Q

What are the limitations of air purifying respirators?

A
  • the right cartridge for the right contaminant
  • Cartridges must be changed periodically
  • Respirators provide protection up to 10 or 100 times the PEL. Cannot be
    used beyond its rated protection factor
  • cannot be used in oxygen deficient
  • Cannot be used for unknown concentrations
  • Cannot be used for chemicals with poor warning properties
  • Not adequate in major leak/spills or for certain highly toxic chemicals
  • half face cartridge and dust mask operators only provide protection to level 10 times above the chemical or dust permissible limit known as assigned protection factors, (APF)
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7
Q

What are air purifying respirators?

A

filters, air through cartridges with assistance of a blower.

  • an air purifying respirator that uses a blower to force the ambient air
    through air purifying elements to the inlet covering
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8
Q

What are airline respirators?

A

provides unlimited, clean air from a compressor

  • clean air comes from a compressor or tank and provides the highest
    protection to user

*less air

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9
Q

What are self contained breathing apparatus’s (SCBA)?

A

provides 30 to 60 minutes of
clean air from a tank

  • clean air comes from a compressor or tank and provides the highest
    protection to user

*more air

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10
Q

When are supplied respirators required?

A
  • oxygen deficiency
  • High levels of toxic chemicals in the air – above “IDLH” levels
  • Other conditions of high levels of highly toxic chemicals in the air
  • Firefighting
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11
Q

What is the air quality for supplied respirators?

A
  • air for tanks or from compressors must be grade D air
  • Tank air is purchased from vendors
  • compressor supply air for airline respirators
  • Low pressure compressors may not provide adequate amount of air
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12
Q

What are plant air compressors?

A
  • be careful – these do not provide clean air without a filter system
  • Oil lubricated compressors are especially hazardous. You must test for carbon monoxide or have a high temperature alarm.
  • locate air intake away from engine exhaust, which can contaminate
    breathing air
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13
Q

What are escape respirators?

A

provides air for escape on a small bottle
-a respirator intended to be used only for emergency exit
-Can either be attached to airline respirator system or carried

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14
Q

What are assigned protection factors?

A

The number of times above the exposure limit for which a given respirator provides protection

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15
Q

Why/when are medical evaluations required for using an air respirator?

A
  • must provide a medical evaluation to determine employees ability to use a respirator, before fit testing and use
  • Annual review of medical status is not required
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16
Q

What are the basic steps for a medical evaluation for respirators?

A
  • Confidential, medical questionnaire
  • Employee completes it and sends it directly to medical provider
  • Medical provider decides if medical exam needed
  • The results are only to determine if respirators can be worn
17
Q

What are the rules for making sure a respirator fits properly?

A
  • prior to assignment, and after medical evaluation
  • Testing must be done before first wearing a tight fitting respirator
  • tight-fitting respirators must fit properly to leaks around the edges
  • Checking, fit of respirator on individual employees
  • Beards are not allowed when wearing a tight fitting respirator because
    they will leak
  • Annual fit testing requirement
18
Q

What is the maintenance & cleaning for respirators?

A
  • must be cleaned and inspected and maintained regularly
  • Maintenance and repair are essential for proper functioning
  • Store and a clean, dry place
  • Cartridges are not cleaned only disposed of. Regular cleaning is especially
    important in dusty conditions.
19
Q

What is a respirator program?

A
  • develop a written program with work site specific procedures, when respirators are necessary or required by the employer
  • Must provide respirators, training, and medical evaluations at no cost to the employee
20
Q

What is program evaluation for respirators?

A
  • must conduct evaluations of the workplace as necessary to ensure effective implementation of the program
  • Must regularly consult employees required to use respirators to assess their views on program effectiveness and to identify & correct any problems
21
Q

When is respirator use not required?

A
  • employee may provide: employees request or permit to use their own, if
    employer determines such use will not create a hazard
  • Must make sure employee is medically able to use the respirator, and does
    not present a health hazard
22
Q

What are the record keeping requirements for respirators?

A
  • records of medical evaluations must be retained & made available (29 CFR 1910.1020
  • a record of fit test must be established and retained until the next fit test is administered
  • a written copy of the current program must be retained
  • written materials required to be retained, must be made available upon request to affected employees & OSHA
23
Q

What are the responsibilities of employees using respirators?

A
  • use respirators in accordance with instructions received in training class
  • Maintain, clean, inspect and store respirators as instructed in class
  • Report any malfunction of your respirator to your supervisor
  • Immediately discontinue use of respirator malfunctions, and immediately go to an area with respirable air
24
Q

What are the responsibilities of supervisors when it comes to respirators?

A
  • ensure personnel use respirators and accordance with instructions, received in training class
  • Ensure respirators are clean, disinfected and stored in a clean sanitary condition
  • Ensure respirators are in good working condition
25
Q

Why are respirators the last choice?

A
  • they can be hot, uncomfortable, and make it hard to see or communicate
  • They can be hard to breathe through
  • They are easily remove in contaminated air
  • They can leak, wear out or be the wrong kind
26
Q

How do you avoid using respirators? (use 1 or more)

A

Stage 1:
-eliminate use of chemical
-substitute with a less toxic chemical

stage 2:
-ventilation
-dust suppression with water
-isolate or enclose the chemical processes
-other processing change
-respirators should be used only if these methods are not feasible, or don’t reduce exposure

Intro To Environmental Health And Safety (19 decks)

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