Transcript Lead Safety Awareness Training
Lead Safety Awareness Training
29 CFR 1910.1025
By: Chaizong Lor, Safety Coordinator
Facilities Management UW-Eau Claire
Lead Safety Awareness Training
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Training Objectives:
– 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
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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
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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.
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Distribution of Lead in the Body
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Lead can be retained in the body for a long period of time
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About 95% of lead in blood is found in the red blood cells
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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
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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.
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Lead Exposure Limit
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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.
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Lead Assessment
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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.
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If applicable historical, subjective data exists;
Assume the presence of lead and proceed with safe work practices based on this subjective data
Complete the Job Hazard Prevention Control Methods 1 st 2 nd 3 rd Begin to perform The job safely Potential Lead Contamination A flow chart for decision made by the workers, supervisors and/or Safety Coordinator
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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
Engineering Control
Follow Section 6.2.1 (6.2.1.1) & (6.2.1.2)(a – c)
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
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Methods of Paint Removal
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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.
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Methods of Paint Removal Cont.
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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.
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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.
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Avoid creating and spreading dust
– 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.
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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.
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Safe Work Practices Cont.
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Vacuum Work Area From High to Low
– 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.
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Safe Work Practices Cont.
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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.
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Disposal Methods
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Class I
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Low Lead Waste Class II
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Architectural Components (Paint Tightly Bonded
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Class III
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Concentrated Lead Waste Class IV
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Other Waste
Facilities Management UW-Eau Claire
OSHA Hierarchy of Controls
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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
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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
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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
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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
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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
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Recordkeeping
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Objective Data Information from Lab Test demonstrating a particular product, material, procedure, operating or activity that does not contain Lead.
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Exposure Date
– At least 30 years
Medical Surveillance
– Duration of employment plus 30 years.
Facilities Management UW-Eau Claire
Summary
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Employees should not perform lead work activities if the exposure is:
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> 2 square feet for interior work
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> 20 square feet for exterior work
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> .7mg/cm2 of lead or 0.06% lead by weight
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> 30ug/m3 (OSHA Action Level)
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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
??
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