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Respirator
& Respiratory Protection Training Respirator and Respiratory
training for your employees is one of the most complex safety training
topics. Using safety videos in conjunction with the SafetyInfo
Safety Library for training can help ensure you do not
skip any required training.
Respirator training must be conducted in a manner that is understandable to the
employee. Also, respirator training must be provided prior to
requiring an employee to
use a respirator.
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Respirators
Selecting the right respirator safety video depends on
the type of respirators your employees need and environment in which they
work. If you have out-dated respirator safety videos, you may not be
covering all the essential topics required by OSHA.
Our Safety Video & Software shop has all the most
current safety videos for respiratory protection and respirator safety
training.
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Employee respirator training must cover the following:
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OSHA Standard requirements
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Why a respirator is needed
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Hazard identification
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Extent of exposures
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Potential health effects
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Selection of respirators
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Respirator inspection
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Donning procedure
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Removal procedure
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Fit Test and seal check
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Proper wearing
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Improper fit, usage, or maintenance effects
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Limitations and capabilities of the respirator
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Emergency situations
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Proper cleaning, maintenance & storage
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Symptoms & signs that may limit effective use
OSHA requires that employers provide effective training
to employees who are required to use respirators. The training must be
comprehensive, understandable, and recur annually, and more often if
necessary.
The employer shall ensure that each employee can demonstrate knowledge of
at least the following:
Why the respirator is necessary and how improper fit, usage, or
maintenance can compromise the protective effect of the respirator;
What the limitations and capabilities of the respirator are;
How to use the respirator effectively in emergency situations, including
situations in which the respirator malfunctions;
How to inspect, put on and remove, use, and check the seals of the
respirator;
What the procedures are for maintenance and storage of the respirator;
How to recognize medical signs and symptoms that may limit or prevent the
effective use of respirators
Respirator retraining must be administered
annually, and when there are changes in the workplace or the type of
respirator render previous training obsolete, inadequacies in the employee's knowledge or use of the respirator indicate
that the employee has not retained the requisite understanding or skill;
or any other situation arises in which retraining appears necessary to ensure
safe respirator use.
OSHA’s respirator
standard requires that employers establish and maintain an
effective respiratory program—different hazards require
different respirators—and employees are responsible for wearing
the respirator and complying with the program.
Respirators must be used
while effective engineering controls, if they are feasible, are
being installed. If engineering controls are not feasible,
employers must provide respirators, and employees must wear them
when it is necessary to protect their health. The equipment
issued to the employee must be properly selected, used, and
maintained for a particular work environment and contaminant, and
employees must be trained in all aspects of the respiratory
protection program.
When planning a program
to control occupational illness caused by breathing air
contaminated with harmful dusts, fogs, fumes, mists, gases,
smokes, vapors, or sprays, the primary objective should be
prevention.
Responsibility for the
program must rest with one person. The program administrator must
have sufficient knowledge of the subject to supervise the program
properly. Larger plants or companies with industrial hygiene,
health physics, plant medical department, safety engineering, or
fire prevention departments should administer the program in
liaison with the pro-gram administrator. In smaller plants that
do not have industrial hygiene, health physics, safety
engineering, or fire prevention departments, the program must be
administered by an upper-level superintendent, foreman, or
qualified person to be the responsible program administrator for
the respirator program.
Any respirator program
should stress thorough training of all users. Employees must be
aware that the equipment does not eliminate the hazard. If the
equipment fails, overexposure will occur. To reduce the
possibility of failure, equipment must fit properly and be
maintained in a clean and serviceable condition.
Employers and employees
must understand the equipment’s purpose and its limitations.
The equipment must not be altered or removed by the wearer even
for a short time; despite the fact the wearer may find it
uncomfortable.
An effective respirator
program must cover the following factors:
• written worksite
specific procedures;
• program evaluation;
• selection;
• training;
• fit testing;
• inspection,
cleaning, maintenance and storage;
• medical evaluations;
• work area
surveillance;
• air quality
standards; and
• approved
respirators.
When OSHA or employers
require respirator use, employers are required to have written
operating procedures for the safe and proper use of respirators.
Users must be familiar with these procedures as well as with
available respirators and their limitations. In workplaces with
no hazardous exposures, but where there is voluntary respirator
use, certain written program elements may be necessary to prevent
potential hazards associated with respirator use.
Employers must evaluate
whether respirator use itself may harm employees. If so,
employers must medically evaluate employees and, if necessary,
restrict use, as well as comply with program elements. Employers
must inform employees voluntarily using respirators of basic
information in Appendix D of OSHA’s Respiratory Protection
standard.
The effectiveness of a
company’s respirator program must be evaluated regularly and
the written operating procedure modified as necessary to reflect
the evaluation results. The use of a labor-management team may be
effective for the periodic evaluation.
Choosing the Correct
Respirators
Choosing the right equipment involves determining what the hazard
is and its extent, choosing approved equipment, and ensuring that
the device is certified. Equipment must be used pursuant to the
conditions accompanying the certification.
Chemical and physical
properties of the contaminant, as well as the toxicity and
concentration of the hazardous material and the amount of oxygen
present, must be considered in selecting the proper respirators.
The nature and extent of the hazard, work rate, area to be
covered, mobility, work requirements and conditions, as well as
the limitations and characteristics of the available respirators
also are selection factors.
Air-purifying
respirators use filters or chemical absorbing canisters to remove
harmful substances from the air. They range from simple
disposable masks to sophisticated devices.
Air-purifying
respirators do not supply oxygen and may not be used in
oxygen-deficient atmospheres or in ones that are immediately
dangerous to life or health (IDLH).
Atmosphere-supplying
respirators are designed to provide breathable air from a clean
air source other than the surrounding contaminated work
atmosphere. They range from supplied-air respirators and
self-contained breathing apparatus (SCBA) to complete
air-supplied suits. The time needed to perform a given task,
including the time necessary to enter and leave a contaminated
area, is one factor that determines the type of respiratory
protection needed. For example, SCBAs, gas-masks, or
air-purifying chemical-cartridge respirators provide respiratory
protection for relatively short periods whereas a type of
atmosphere-supplying respirator that supplies breathable air from
an air compressor through an airline can provide protection for
extended periods of time. Particulate filter air-purifying
respirators can provide protection for long periods without the
need of filter replacement only if the total concentration of
atmospheric particulates is low. Where there are higher
concentrations of contaminants, however, an atmosphere-supplying
respirator such as the positive-pressure supplied-air respirator
(SAR) offers the advantage of better protection and longer
duration. The use of SARs also avoids the need to be concerned
about determining filter breakthrough times, change schedules, or
using end-of-service-life indicators (ESLI) for airborne toxic
materials, a factor that must be considered when using
air-purifying respirators. SARs also cause less discomfort than
air-purifying respirators because the wearer need not overcome
filter resistance when inhaling.
Air-purifying
respirators present minimal interference with the wearer’s
movement. Atmosphere-supplying respirators, however, may restrict
movement and present potential hazards.
For example, SARs with
their trailing hoses, can limit the area the wearer can cover and
may present a potential hazard where the trailing hose can come
into contact with machinery. Similarly, an SCBA—a respirator
that includes a back-mounted, compressed-air cylinder—presents
both a size and weight penalty. This may restrict climbing and
movement in tight places, and carrying the added weight of the
air cylinder presents an additional burden. Another factor to
consider when using respirators is the air-supply rates. The
wearer’s work rate determines the volume of air breathed per
minute. The volume of air supplied to meet the breathing
requirements is of great significance when using
atmosphere-supplying respirators such as self-contained and
air-line respirators that use cylinders because this volume
determines their operating life. The useful service life of these
respirators under even moderate working conditions may be
significantly less than under conditions of rest. The peak
airflow rate also is important in the use of a constant-flow SAR.
The air-supply rate should always be greater than the maximum
amount of air being inhaled in order to maintain the respiratory
enclosure under positive pressure.
Higher breathing
resistance of air-purifying respirators under conditions of heavy
work may result in distressed breathing. A person working in an
area of high temperature or humidity is under stress. Additional
stress, resulting from the use of a respirator, should be
minimized by using one having a minimal weight and a minimal
breathing resistance when these can be fitted properly to the
wearer.
Some type of warning as
to the remaining service is available for SCBAs and for some
chemical canister respirators. This may be a pressure gauge or
timer with an audible alarm for SCBAs or a
color-end-of-service-life indicator (ESLI) on the cartridge or
canister. The user should understand the operation and
limitations of each type of warning device. Since many gas masks
and chemical-cartridge respirators have no
ESLI indicators for
their remaining service life, the employer or employee will need
to do service life calculations. It is important, therefore, that
new canisters and cartridges be used at the beginning of each
work shift.
Fit Testing
Full facepieces,
half masks, quarter masks and even the different brands of the
same type of respirator marketed, have different fit
characteristics. No one respirator will fit everyone. Employers
need to have sufficient sizes and models available to achieve
proper fit.
Corrective eyeglasses
worn by employees also present a problem when fitting
respirators. Special mountings are available to hold corrective
lenses inside full facepieces. If corrective lenses are needed,
the facepiece and lenses must be fitted by a qualified individual
to provide good vision, comfort, and proper sealing.
The user must receive
fitting instructions including demonstrations and practice in how
to wear the respirator, how to adjust it, and how to determine if
it fits properly.
Although respirators are
designed for maximum efficiency, they cannot provide protection
without a tight seal between the facepiece and the face of the
wearer. Consequently, beards and other facial hair can
substantially reduce the effectiveness of a respirator. The
absence of dentures can seriously affect the fit of a facepiece.
To ensure proper respiratory protection, a facepiece must be
checked each time the respirator is worn. This can be
accomplished by performing either a positive-pressure or
negative-pressure user seal check. Detailed instructions for
performing these tests can be found in Appendix B-1 of the OSHA
standard.
The effectiveness of the
fit of the facepiece can be tested two ways: qualitatively and
quantitatively. Qualitative fit testing involves the introduction
of a harmless odoriferous or irritating substance into the
breathing zone around the respirator being worn. If no odor or
irritation is detected by the wearer, a proper fit is indicated.
Quantitative fit testing
offers more accurate, detailed information on respirator fit. It
can involve introducing a harmless aerosol to the wearer while he
or she is in a test chamber, the measurement of the ambient
particulates in the air, or taking controlled negative-pressure
measurements. While the wearer performs exercises that could
induce facepiece leakage, the air inside and outside the
facepiece is then measured for the presence of an aerosol,
ambient particulates, or pressure change, to determine any
leakage into the respirator.
Care of Respirators
All respirators must be inspected for wear and deterioration of
their components before and after each use. Special attention
should be given to rubber or plastic parts that can deteriorate.
The face-piece, especially the face seal surface, headband,
valves, connecting tube, fittings, and canister must be in good
condition. A respirator inspection must include a check of the
tightness of the connections.
SCBAs must be inspected
at least monthly. Air and oxygen cylinders must be fully charged
according to the manufacturer’s instructions. Regulator and
warning devices must be checked to ensure their proper function.
Records must be kept of inspection dates and findings. Chemical
cartridges and gas mask canisters must be replaced as necessary
to provide complete protection. The manufacturer’s
recommendations must be followed. Mechanical filters must be
replaced as necessary to avoid high resistance to breathing.
Repairs must be made only by experienced persons using parts
specifically designed for the respirator. The manufacturer’s
instructions should be consulted for any repair, and no attempt
should be made to repair or replace components or make
adjustments or repairs beyond the manufacturer’s
recommendations.
A respirator that has
been used must be cleaned and disinfected before it is reissued.
Emergency-use rescue equipment must be cleaned and disinfected
immediately after each use.
Respirators must be
stored to protect against dust, sunlight, heat, extreme cold,
excessive moisture, or damaging chemicals. Protection against any
mechanical damage also should be provided. Respirators should be
stored so that facepieces and exhalation valves will rest in a
normal position to prevent the rubber or plastic from reforming
into an abnormal shape.
Respirators may be
washed in a detergent solution and then disinfected by immersion
in a sanitizing solution. Cleaner-sanitizers that effectively
clean the respirator and contain a bactericidal agent are
commercially available. The bactericidal agent frequently used is
a quaternary ammonium compound. Strong cleaning and sanitizing
agents and many solvents can damage rubber or elastic respirator
parts. Such materials must be used with caution or after
consultation with the respirator manufacturer.
Medical Evaluations
Persons assigned to tasks that require the use of a respirator
must be physically able to perform the work while using the
respirator. The local physician or licensed health care
professional must determine what health and physical conditions
are pertinent. The respirator user’s medical status must then
be reviewed periodically. When respirators are worn in toxic
atmospheres, the individual’s body burden may be evaluated
using appropriate laboratory tests. These may include urine,
blood, or fecal analysis and other techniques to determine the
intake and excretion of toxic substances. The findings of these
tests, when correlated with other exposure data, such as air
sampling data for wearers of such equipment, can serve as an
indication of the effectiveness of the program.
Positive evidence of
exposure must be followed up with appropriate surveillance of
work area conditions to determine if there is any relationship to
inadequate respiratory protection or a need for additional
engineering controls.
Surveillance must be
maintained of the conditions in the work area and of the degree
of worker exposure or stress (combination of work rate,
environmental conditions, and physiological burdens of wearing a
respirator). Changes in operating procedures, temperature, air
movement, humidity, and work practices may influence the
concentration of a substance in the work area atmosphere. These
factors necessitate periodic monitoring of the air contaminant
concentration. In instances where work is of such short duration
that time to carry out the testing exceeds the time on the job,
reasonable estimates of exposure are allowable.
In situations where the
environment is or may be immediately dangerous to life or health
(IDLH), employers must ensure that one employee or, when needed,
more than one employee is located outside the dangerous
environment and that visual, voice, or signal line communication
is maintained between the employees in the IDLH atmosphere and
employee(s) outside. In interior structural firefighting
situations employers must ensure that at least two employees
enter the structure and remain in visual or voice contact with
one another at all times. Also, at least two employees shall be
located outside to provide effective emergency rescue.
Equipment and
Air-Quality Standards
Respiratory protective devices must be approved by the National
Institute for Occupational Safety and Health (NIOSH), for the
contaminant or situation to which the employee is exposed.
Compressed air, compressed oxygen, liquid air, and liquid oxygen
used for respiration must be of high purity. Oxygen must meet the
requirements of the United States Pharmacopoeia for medical or
breathable oxygen. Breathable air must meet at least the
requirement for Grade D breathable air de-scribed in Compressed
Gas Association (CGA) Commodity Specification G-7.1-1989.
Compressed oxygen must
not be used in open circuit SCBAs or SARs that have previously
used compressed air. Oxygen must never be used with airline
respirators.
Breathable air may be
supplied to respirators from cylinders or air compressors. For
testing cylinders, see Shipping Container Specifications of the
Department of Transportation (49 CFR Part 178). Containers of
breathable gas must be clearly marked (see National Institute for
Occupational Safety and Health, 42 CFR Part 84 requirements).
Further details on the sources of com-pressed air and its safe
use can be found in the CGA pamphlet G-7.1-1989, mentioned above.
The compressor for
supplying air must be equipped with the necessary safety devices
and alarms. Compressors must be constructed and situated to avoid
any entry of contaminated air into the system and must be
equipped with suitable in-line, air-purifying sorbent beds and
filters installed to ensure air quality.
If an oil-lubricated
compressor is used, it must have a high-temperature or carbon
monoxide alarm or both. If only the high-temperature alarm is
used, the air from the compressor must be tested frequently for
carbon monoxide. Airline couplings must be incompatible with
outlets for other gas systems to prevent accidental servicing of
airline respirators with non-respirable gases or oxygen.
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