Transcript Protecting Yourself

Level C
 Limited level of respiratory and skin
protection from airborne hazards
 Full-face canister respirator (APR)
 Chemical-protective clothing with
hood
 Inner and outer gloves
 Chemical-resistant shoes
 Optional items like hard hat, boot
and glove covers, and possibly a
five-minute escape pack
Level D
 No respiratory and limited skin protection
 Disposable coveralls
 Safety shoes
 Safety glasses or goggles
 Hard hat
 Gloves
 Optional: five-minute escape pack for
emergency egress
Limitations of PPE
Impairs mobility, vision, and communication
Incompatible with other PPE
Problems with mask fit (facial hair, dentures,
glasses, caps, 10% body weight change)
Heat stress
Can cause physical and psychological stress
Hinders work performance and active work
time
Respiratory Protection
Atmospheric hazards
Gases/Vapors
Particulates
Oxygen deficiency
Mask Fit Tests
Quantitative
Pass/fail pressure test using test agent
Qualitative
Smoke test
Types of Respirators
Air-purifying respirators (APR/PAPR)
Continuous flow respirators
Atmosphere-supplying respirators (SAR)
Air-Purifying Respirators
Utilize “purified” ambient air through a
filtering element or absorbent cartridge
Negative pressure respirators
Air-Purifying Respirators
 Limitations
Atmosphere that is “Immediately Dangerous to Life
and Health” (IDLH)
Entry into area or confined space where exposure
conditions have not been characterized
Inadequate warning properties of identified gases or
vapors
Unknown service life of sorbent materials in
respirator cartridges
High relative humidity
Air-Purifying Respirators
 Disadvantages
Limited duration of protection
Limited protection
Constant monitoring
Detectable hazards only
Characteristics
Chemical cartridges
Mechanical filters
Air-Supplying Respirators
 Air-line with escape SCBA
 Self-contained breathing apparatus
(SCBA)
 Limitations
The maximum MSHA/NIOSH approved
hose length is 300 feet
Mobility impairment
The air lines are vulnerable to damage,
contamination, or degradation
The worker needs to retrace steps when
leaving the work area
Someone needs to supervise and monitor
the air supply
Continuous Flow Respirators
Powered-air purifying respirator (PAPR)
Continuous flow of filtered air to the
facepiece
Air-Purifying Respirators
Warning properties are
essential
to safe use of air-purifying
respirators since they allow
detection of contaminant
breakthrough should it occur
Air-Purifying Respirators
RESPIRATOR CARTRIDGES/FILTERS
COLOR
APPROVED FOR
Black
Organic Vapors
Yellow
Organic Vapors and Acid Gases
White
Acid Gases
Green
Ammonia and Methylamine
Purple
HEPA, Dusts, Fumes and Mists
Orange stripe for Dusts, Fumes and Mists in
combination with vapor or gas
Air-Purifying Respirators
APF
Respirator
10
Half-facepiece Respirator with Vapor
Cartridge or Filter
Full-facepiece Respirator with
Vapor Cartridge or Filter
Full-facepiece Supplied Air Respirator
operated in Pressure - demand mode.
Full-facepiece Self-contained
breathing apparatus operated in
Pressure demand mode
50
1,000
1,000 to
10,000
Decontamination
Purpose
To protect workers from contaminants
Removes or neutralizes contaminants that
have accumulated on personnel and
equipment
Protective clothing
Respiratory protection equipment
Tools and instruments
Vehicles
Other fixed facility equipment
Decontamination
Types of Contamination
Surface- Remains on the surface
Permeated- Go into or through
Decontamination
Rate of Permeation Factors
Contact time
Concentration
Temperature
Contaminant Molecule Size
Physical State of Contamination
Decontamination Methods
Physical removal
Chemical removal
Combination methods
Equipment Decontamination
Degree of contamination
Non-cleanable parts
Discarded
Equipment Decontamination
Hand tools
Tables, shelves and pallets
Large equipment