Lead Safety Awareness Training

Report
Lead Safety Awareness
Training
29 CFR 1910.1025
By: Chaizong Lor, Safety Coordinator
Facilities Management
UW-Eau Claire
Lead Safety Awareness Training
• Training Objectives:
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Definition of Lead
Routes of Exposure to Lead
Distribution of Lead in the Body
The Effects of Lead Exposure
Lead Exposure Limit
Lead Assessment
Methods of Paint Removal
Safe Work Practices
Disposal Methods
OSHA Hierarchy of Controls
Medical Surveillance
Training Requirement
Recordkeeping
Summary
Facilities Management
UW-Eau Claire
Definition Of Lead
• A naturally occurring, bluish-gray
metal found in small quantities in the
earth’s crust and is present in a variety
of compounds. The characteristics of
lead include:
– Low melting point
– High density
– Acid and corrosion resistant
– Chemical stability
– No characteristic smell
– Does not burn and dissolve in water
Facilities Management
UW-Eau Claire
Routes of Exposure to Lead
• Inhalation (Breathing)
– Lead particles in the air.
• Ingestion (Eating)
– Lead particles on hands
transferred to food, drinks, cigarettes.
• Absorption
– Organic lead is absorbed
through skin.
Facilities Management
UW-Eau Claire
Distribution of Lead in the Body
• Lead can be retained in the body for a long
period of time
• About 95% of lead in blood is found in the red
blood cells
• About 10% is in the plasma which transfers lead
to soft tissue and bone
• Half – life of lead in body systems:
– 35 days for the body needs to eliminate one half of the lead
dose from the blood
– 40 days for the body needs to eliminate one half of the lead
dose from the soft tissue
– 20 – 30 years for the body needs to eliminate one half of
the lead dose from the bone
Facilities Management
UW-Eau Claire
The Effects of Lead Exposure
• Acute Effects
– Short term effects and it may cause the
brain to quickly develop into seizures,
coma, and death from cardiorespiratory
arrest.
• Chronic Effects
– Long term effects and it can result in
severe damage to the central nervous
system, particularly the brain.
Facilities Management
UW-Eau Claire
Lead Exposure Limit
• OSHA
– Action Level (AL)
• 30 ug/m3
– Permissible Exposure Limit
• 50 ug/m3
• HUD Guidelines
– 20 square feet (2 square meters) on exterior surfaces;
– 2 square feet (0.2 square meters) in any one interior
room or space
• Note: In the above reference, the 2 square feet in any one
interior room and 20 square feet on exterior surfaces
would be a room limit and not a component limit.
– Safe work practices are required even though
maintenance or hazard reduction activities do not disturb
painted surfaces that total more than HUD Guidelines.
Facilities Management
UW-Eau Claire
Lead Assessment
• Initial Assessment
– Sample will be taken and sent to the lab to
determine whether or not lead is present
• If it contains lead at or above 0.7 mg/cm2 of
lead or 0.06% lead by weight, contract with a
qualified lead abatement contractor.
• If below 0.7 mg/cm2 of lead or 0.06% lead by
weight and/or no lead, begin to perform the job
safely.
Facilities Management
UW-Eau Claire
Potential Lead
Contamination
If applicable historical, subjective
data exists;
Assume the presence of lead and
proceed with safe work practices based
on this subjective data
A flow chart for decision made by
the workers, supervisors and/or
Safety Coordinator
• Will work disturb < 2 square feet for interior work
Or < 20 square feet for exterior work?
YES
NO
Notify Supervisor who will have the
appropriate test performed to determine if
lead is present
Complete the Job
Engineering Control
Follow Section
6.2.1 (6.2.1.1) & (6.2.1.2)(a – c)
1st
Hazard Prevention
Control Methods
2nd
3rd
Begin to perform
The job safely
Work Practice Control
Follow Section
6.2.2(6.2.2.1)(a – e)
PPE
Follow Section
6.2.3(6.2.3.1)(a – d)
YES
Contact
Contractors
to do the job
Is Lead
Present?
NO
Complete the
Job
No further
Action required
Facilities Management
UW-Eau Claire
Methods of Paint Removal
• Acceptable Methods:
– Wet scraping or sanding.
– Chemical stripping on- or off-site
if stripes without Methylene Chloride
– Replace painting components.
– Use heat guns below 1,100
degrees F.
– HEPA vacuum.
Facilities Management
UW-Eau Claire
Methods of Paint Removal Cont.
• Prohibited Methods:
– Open flame burning.
– Heat guns above 1,100 degrees F.
– Machine sanding or blasting without HEPA
(High Efficiency Particulate Air) exhaust control.
– Paint stripping using Methylene Chloride
substances.
– Dry scraping, EXCEPT:
• Within 1 ft. of electrical outlets.
Facilities Management
UW-Eau Claire
Safe Work Practices
• Lead based work activities that are
known to exceed 30ug/m3 will be
completed by a qualified contractor.
• Only perform minor lead work activities
such as:
– Repairs to (or installation of new) electrical
outlets and switches.
– Replacement of plumbing fixtures.
– Creations of holes in walls to run pipes through.
– Spot repairs of painted walls ceilings, trim and
molding prior to painting.
Note: 2 square feet or less in any one interior
room, hallway or stairwell or totaling no more
than 20 square feet for exterior surfaces.
Facilities Management
UW-Eau Claire
Safe Work Practices Cont.
• Avoid creating and spreading dust
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Mist surfaces with water before sanding or scraping.
Mist work area with water.
Keep dust contained to the immediate work area.
Prepare surfaces for painting by using wet sand and
wet scrape.
– Fill holes and cracks
– Use wet abrasive sponge or wet-dry sandpaper if
needed to feather edges.
• Protect Occupants and Workers.
– Keep occupants and students away until after clean up.
– Wear proper respiratory protection for lead dust.
– Wear a hat to help keep dust out of hair when painting.
Facilities Management
UW-Eau Claire
Safe Work Practices Cont.
• Work Clean
– Clean the work area often so that you do not spread
lead dust.
• Clean up work areas after all work.
– Keep workers clean; don’t take dust home.
– Do not blow off or shake out your work clothes to
remove dust.
– If painted surfaces are disturbed, clean up very
carefully.
– Use HEPA vacuum to clean work areas.
– Ensure the vacuum is used and emptied in an
appropriate manner which minimizes the re-entry of
lead into the work spaces.
Facilities Management
UW-Eau Claire
Safe Work Practices Cont.
• Vacuum Work Area From High to Low
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Use HEPA Vacuum all horizontal surfaces – slowly.
Start with walls, tops of doors, window troughs.
HEPA Vacuum at least two feet beyond contained area.
Vacuum floor under work area – use corner tool in
corners, cracks of trim, and between floor boards.
• Wet Clean from high to low
– Wet rag with detergent then wring out.
– Mist surface or rag as you clean.
– Change cloths and rinse water often or use disposable
wipes.
– Clean the floor last.
Facilities Management
UW-Eau Claire
Safe Work Practices Cont.
• Cleaning Floors
– Mist and Scrub
• At start of cleaning, soak mop in
detergent water then mist small
area with detergent before mopping.
• Scrub with mop.
– Squeeze out and wash
• Squeeze mop into empty bucket then
rinse in rinse water – rinse often.
• Mop small areas at a time.
– Rinse with clean water and new mop head.
– Dispose of waste.
Facilities Management
UW-Eau Claire
Disposal Methods
• Class I
– Low Lead Waste
• Class II
– Architectural Components (Paint Tightly
Bonded)
• Class III
– Concentrated Lead Waste
• Class IV
– Other Waste
Facilities Management
UW-Eau Claire
OSHA Hierarchy of Controls
• Engineering Controls
– Substitution
– Process/Equipment Modification
– Isolation and Ventilation
• Work Practice Controls
– Housekeeping – maintain surfaces as
free as practicable of lead accumulation
– Personal Hygienic Practices
– Supervision
– Administration Controls
Facilities Management
UW-Eau Claire
OSHA Hierarchy of Controls
• Work Practice Controls Cont.
– Mist before drilling and cutting
– Pry and pull to reduce lead dust
– Mist surrounding work area to keep dust
down
Facilities Management
UW-Eau Claire
OSHA Hierarchy of Controls
• Personal Protective Equipment
– Disposable or cleanable work gloves
– Coveralls with foot covering
– Goggles or face shields
– Dust mask approved for lead abatement work
Facilities Management
UW-Eau Claire
Medical Surveillance
• All employees who are or may be exposed
above the action level for more than 30
days per year
• All medical examinations and procedures
are performed by or under the supervision
of a licensed physician
• All medical surveillance shall be provided
without cost to employees and at a
reasonable time and place
Facilities Management
UW-Eau Claire
Training Requirement
• Employees who perform activities
which may potentially disturb
lead < HUD Guidelines
• Where there is a potential exposure
to airborne lead at any level, and the
work is classified as demolition,
repair or maintenance
• Annually
Facilities Management
UW-Eau Claire
Recordkeeping
• Objective Data
• Information from Lab Test
demonstrating a particular product,
material, procedure, operating or
activity that does not contain Lead.
• Exposure Date
– At least 30 years
• Medical Surveillance
– Duration of employment plus 30 years.
Facilities Management
UW-Eau Claire
Summary
• Employees should not perform lead work
activities if the exposure is:
– > 2 square feet for interior work
– > 20 square feet for exterior work
– > .7mg/cm2 of lead or 0.06% lead by weight
– > 30ug/m3 (OSHA Action Level)
• Always follow safe work practices and
wear appropriate PPE.
• Paint waste removal should be handled
with appropriate manner.
Facilities Management
UW-Eau Claire
Any Questions
??
Facilities Management
UW-Eau Claire

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