NAA Respiratory

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NAA Respiratory Protection Program and Training
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On line Info

• http//www.osha.gov/html/respirator.html

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Respiratory Hazards

• Grinding operations-metal, plant
• Welding
• Pesticide Applications
• Ethylene oxide
• Rescue Operations
• Formaldehyde use
• Confined Space

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Restrictions and Requirements for Respirators

• Have a Respiratory Protection Plan
• Conduct fit testing plus with routine fit check
• No respirator will not be used when facial hair
  or abnormalities interfere with seal
• Respirators must be worn conscientiously
• All units must be MSHA/NIOSH approved

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Restrictions and Requirements

• Always leave work area if failure of unit is
  suspected
• Always use the highest protection factor
  available as a safety margin
• Rely on canister change schedules and not solely
  warning properties

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Engineering, Administrative, Personal Controls
SOPS Substitution Shift Change Training
Hoods ventilation spray booths
Use respirator Medical program care of RP
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Any Respirator is Useless

• IDLH- useless
• inappropriate canister
• no physiological effects (taste,odor)
• Environmental factors
• Wearer variability
• Poor canister change out

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Reasons for General Respiratory Selection

• Dusts/Fumes/mists
• Maintenance procedures
• Organic vapors
• Pesticide dust and sprays
• Formaldehyde
• Radionuclides
• Oxygen Deficient Atmospheres

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Powered Air Purifying RespiratorPAPR
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Hooded PAPR
Good for Beards Eye Glass Users Comfort in
heat Patient Care
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Half Face Respirator
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Full Face Respirator
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Comparisons/Positive Considerations of APRs

• Provides minimal interference with wearer
  movement
• Units with ESLI provide safety measure
• best when used with chemicals that have adequate
  warning qualities
• cost effective
• In low particulate atmosphere, provide protection
  for long time

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Limits of APRs

• Worker fatigue due to filter resistance
• not for IDLH atmospheres
• not for confined space entry
• not for atmospheres with unknown contaminants
• high relative humidity can be problematic
• face leaks can result in inhalation

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Limits of Supplied Air Respirators (SARS)

• Use for short periods of time
• Relatively high cost and maintenance
• restricts movement

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Comparisons/Positive Considerations

• Affords entry into unknown atmospheres
• SARs with air compressor provide extended periods
  of protection
• Affords entry into total concentrations of
  particulate that are high
• Sensory warning properties of toxins plays minor
  role with SCBA

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Methods of Donning and Fit Test

• General Dos and Donts
• Performance of respirator inspection and review
  of parts
• Donning and doffing procedures for negative half
  face respirators
• Negative and positive pressure test
• Film

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Dos and Don'ts

• Never don a respirator unless you are fit to wear
  one
• Never don a respirator without inspecting it
  first
• Do wear only the size/model that was fit tested
  for you
• Do have a shaven face for good seal

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Dos and Donts

• Weight fluctuations of 10 pounds or more,
  pregnancy, facial scars will deter your
  fit-retest for fit
• Appropriate sanitation and storage is mandatory

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Performance of Respirator Inspection/Review of
Parts

• Each unit consists of
• face piece
• headbands
• Gaskets
• Inhalation and exhalation valves
• Filter

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Inspection Point One- Facepiece

• Check for deterioration or distortion of the face
  piece
• Check visibility of mask and clips for eyeglasses
• Check for stripped threads

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The Headbands/Harness

• Check the elasticity of the bands, rubber
  deterioration
• Exhalation valve must lie flat against its seat,
  no chips, nicks or tears should exist
• Check for dirt or soap residual and remove any
  found
• Remove this valve to fully inspect and replace
  after inspection

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Powered Air purifying Respirator Packs

• Ensure your unit is fully charged with powercord
  connections checked

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Donning procedures for Negative Pressure
Respirators

• 1. Respirator, when mounted over face, is paced
  over the bridge of the nose with straps loose,
  bottom rests against chin
• 2. The cranial headband, the longest on top, is
  placed over top of head, short band around neck

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Donning Procedures Continued

• Headband is adjusted by moving the slides until
  facial seal is snug
• Do the cranial headband first, and then pull side
  straps simultaneously with equal strength
• When hooded coveralls are worn, pull hood up
  first before placing respirator on head.

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Positive and Negative Fit Testing Exercise

• Inhalation Test
• 1. Seat the mask by rapidly moving head from
  side to side and up and down, while taking deep
  breaths.
• 2.Place palms on open end of canister, press
  firmly with even pressure and inhale. Respirator
  should collapse with no leaks

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Exhalation test

• To test the respirator during exhalation, close
  off the exhaust valve with palm of hand and
  exhale gently.
• Note pressure should build inside of mask without
  leaks around face seal

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Methods of Qualitative and Quantitative Fit Tests

• Qualitative fit test involves the introduction of
  harmless sweet substance in the breathing zone of
  the wearer- it is determined if the person can
  taste
• Involves the introduction of an aerosol to the
  wearer while in test chamber. Air concentration
  inside an outside mask is measured to determine
  leaks

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Doffing(Removal) the Respirator

• Important to note that doffing the unit must be
  part of overall decontamination process
• 1. Remove gross contamination
• 2. Remove contaminated clothing
• 3. Shower/respirator in bag
• 4. Respirator is cleaned separately

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Maintenance and Storage of Respirators

• Routinely inspect respirators before and after
  each use and after cleaning and maintenance to
  ensure unit is in proper working order
• Replace parts as necessary and do not combine
  different manufacturer parts
• Employees are responsible for the day to day
  cleaning and maintenance of their device.

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Cleaning, Washing, Sanitizing, Maintaining and
Storing

• Respirators shall be cleaned and sanitized after
  each use
• Remove canister and discard
• Immerse respirator in 120 degree F solution of a
  germicidal detergent in water. Scrub with brush.
  Clean exhalation valve
• Rinse , sanitize, air dry
• Store in plastic bag in cabinet

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Summary
Item to Inspect Possible
Defects Head band/neck strap Fray,
loss elasticity Facepiece
Distorted, cracked Valves
Condition of rubber
Improper
seating Cartridge
Damaged, outdated
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Recommendations

• Avoid respiratory use in solitary situations,
  when possible, have others nearby
• When using SARs and SCBA's it is MANDATORY to
  have standby or buddy
• If a respirator wearer is overcome, shows signs
  of suspect stress, remove individual from
  contaminated area (with protection)

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Protection Factors

• Half face respirator
• Full Face
• Positive Pressure-Full face
• Positive Pressure- Full face with airline

• 10x
• 50x
• 100x
• 1000x

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Protection Factor
Concentration outside mask Concentration inside
mask
10 C outside divided by PEL 10 C out
divided by .2f/cc 10 X/.2 therefore 2f/cc is
allowable in mask 8 hours/day x2 f/cc x 25,000
cc x 60 min/day 2.4 million fibers
(.2 PEL asbestos)
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Protection Factors
Use conservative respirator selection PF of 50
means you can be be exposed to an atmosphere
concentration 50 times higher than the PEL
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Canisters Expected PSU
Pre-filter ( P-100) for particulate on top and
the yellow cartridge ( organic) bottom (closest
to unit)
Covers pesticides, paints with oil mist, epoxies
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Disposable Respirators
Use one with an Exhalation valve if possible Use
charcoal prefilter with nuisance organic for
handling manure samples ( not for pit
entry) suitable for painting ( PF 10 ) Examples
are the 3M 8247 (nuisance organic with
particulate
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