Presentation on theme: "University of Maryland Department of Environmental Safety"— Presentation transcript:
1University of Maryland Department of Environmental Safety Lead AwarenessUniversity of MarylandDepartment of Environmental SafetyTERMINAL OBJECTIVES (The purpose of this training):To inform state employees about the potentially hazardous nature of asbestos containing materials, their locations in the various campus buildings, what the state program is doing about asbestos, and the procedures to be followed in the event that an asbestos hazard is suspected.To train employees who work in areas or positions where the potential for asbestos exposure is increased, but whose activities do not require disturbing such materials, in hazard recognition and the proper procedures and reporting mechanisms to be followed in the event that a hazard is suspected, or when they encounter asbestos during their work.To meet training requirements of Maryland Executive Order of November 1987 (superseding that of April 1983 establishing the Maryland Asbestos Program and pertaining to the establishment of the Maryland Asbestos Oversight Committee, etc.).Martin Wizorek, Manager – Occupational Safety and Health
3What is Lead? Heavy metal at room temperature Bluish-gray Low melting pointPliableCorrosion resistantCan form lead compounds
4In what products was lead commonly used? Gasoline (phase-out began 1980)SmeltingLead batteries (25-78% of all lead used in U.S.)Paints and coatingsSolderAuto manufacturingPrintingTetra ethyl lead phase out began in 1980Other construction products : liners, shielding, water-proofing, etc.
5HistoryLate 1950’s – Paint manufacturers started to voluntarily reduced lead content of most paint for residential use.1978 – CPSC limits paint for residential use to 600 ppm (essentially, lead-free paint).However, lead paint for non-residential use is still sold.
6So where is lead paint found? Homes built before 1950Everywhere – inside and outside (all coatings)Homes built betweenProbably outside, may be insideTrims, doors, windows, kitchens, bathrooms, etc.Homes built betweenMay be outside, less likely inside***Before 1978 we assume lead!!!
7What is “lead paint” EPA/HUD/DHS Definition 1.0 mg/cm2 5000 ppm 0.5% Maryland Definition0.7 mg/cm2OSHA and MOSH DefinitionAny detectable amount
9Buildings on Campus & Year Built Date BuiltLast RenovatedRossborough Inn1798Morrill Hall18981994Taliaferro Hall19092003Calvert Hall19131984Skinner Building19171992Baltimore Hall19201986West Education Annex1922Turner Hall19231964LeFrak Hall1928Energy Plant19311957
10Buildings on Campus & Year Built Date BuiltLast RenovatedRitchie Coliseum19321996Shoemaker BuildingFrancis Scott Key HallPreinkert Hall1952St. Mary's Hall1987Holzapfel HallAnne Arundel Hall19371991H.J. Patterson Hall1967Agriculture Shed1938Horse Barn
11Buildings on Campus & Year Built Date BuiltLast RenovatedSheep Barn1938Cattle BarnMicrobiology Building19391988Service Building1940Washington Hall1986Howard HallMarie Mount Hall1980Symons Hall2000Main Administration Building1964Altogether, there are 169 numbered buildings on campus that were constructed prior to 1979.
12Examples of the presence of lead-based paint at the University of Maryland
13Francis Scott Key Hall Exterior white door and door trim
14Francis Scott Key Hall Cream colored door trim (white door and wall are non-LBP)
15Cole Field House Interior window sill (men's room)
16Cole Field House Exterior door trim (note deterioration) Notice the deterioration
24Ways in which lead enters the body Inhalation - Breathing lead fumes or dust. This is the most common route of entry in the workplace.Ingestion - Swallowing lead dust via food, cigarettes etc.
25Health EffectsLead which is inhaled or ingested gets into the bloodstream.Can be circulated throughout your body.
26Health EffectsSome is excreted while some remains in organs and body tissues.If exposure continues, the amount stored in your body will increase if you are absorbing more lead than your body is excreting.
27Chronic Health Effects During prolonged chronic exposure, many body systems can be affected by lead, including:BrainKidneysMusclesBonesBlood forming organsReproductive systems
28Chronic Health Effects (Resulting from High Lead Exposure and Absorption Into Body) Severe damage to blood forming, nervous, urinary and reproductive systemsLoss of appetite, metallic taste in the mouth, anxiety, constipation, nausea, pallor, excessive tiredness, weakness, insomnia, headache, nervous irritability, muscle and joint pain or soreness, fine tremors, numbness, dizziness, hyperactivity and colic (with severe abdominal pain, lead linePerson is easily irritated and may become aggressive
29Chronic Health Effects Reproductive systems of both men and women may be affectedDecreased sex drive, impotence and sterility in menMiscarriage and stillbirth in women whose husbands were exposed to lead or where they were exposed
30Chronic Health Effects Children born of parents who were exposed to excessive lead are more likely to have birth defects, mental retardation, behavioral disorders or die during the first year of childhood
31Other Chronic Health Effects HypertensionLead exposure has been consistently associated with increases in blood pressure in studies conducted in both workers and the general population.Blood lead levels of less than 20 μg/dL sometimes are associated with increases in blood pressure.
32Other Chronic Health Effects Decreased kidney functionLow to moderate levels of lead exposure also have been associated with adverse changes in kidney function.This association may be even worse in people who have other risk factors for kidney disease, such as hypertension or diabetes.
33Acute Health EffectsAcute health effects only appear when worker is exposed to extremely high amounts of leadAcute encephalopathy (disorder or disease of the brain) may develop quickly followed by seizures, coma and death from cardio-respiratory arrestAgain, highly unusual, but not impossible
34THIS IS FROM VERY HIGH LEAD EXPOSURE!!! "The Dangles" was an occupational hazard for printersTHIS IS FROM VERY HIGH LEAD EXPOSURE!!!
35CONFIRM PRESENCE/ NON-PRESENCE OF LEAD CONTAINING MATERIALS
36Lead IdentificationDepartment personnel should contact the Department of Environmental Safety (DES) prior to the disturbance of painted surfaces unless it is known with certainty, either through documentation or testing, that the surface does not contain lead
37Lead IdentificationDES will use direct reading instrument (XRF) to determine if lead is present in any of the surfaces to be modified or demolished.
38How is lead exposure measured? PEL: You are allowed to be exposed up to the Permissible Exposure Limit established by OSHA of 50 ug/m3 (micrograms per cubic meter of air) based on an 8-hour time weighted average.Action Level: OSHA established an Action Level of 30 μg/m3 based on an 8 hour time weighted average.
39The All-Important Action Level If lead is present in any quantity in your workplace, OSHA has directed that an “initial determination” must be made by taking air samples while workers are performing their job that may result in airborne lead exposureThe AL for lead is 30 µg/m3.If the results are below the AL, no further monitoring is necessary for that job, and the workers are not considered to be significantly lead exposed.
40Air Sample Results (As performed by DES for Various Occupations) ActivityAverage(ug/m3Range(ug/m3)CommentsHousekeeping0.11ND-.34Full shift samplesCarpentry3.9ND-36Doors, windowsPainting0.2ND-0.5Windows, exterior columns, radiatorsPlastering0.18ND-0.6Removal & Replacement of of drywall & plasterMaintenance0.8ND-3.7Air filter replacement
41ConclusionsBased on the results, typical maintenance tasks would not result in exposures above the AL.Some activities, such as power sanding on painted surfaces, resulted in short-term exposures. However, these short-term exposures were still below the PEL.
42Awareness of Lead Standard OSHA Regulations state:Where there is a potential exposure to airborne lead at any level, the employee must be informed of the contents of OSHA 29 CFR , Appendix A & B.Because you may be exposed to lead, even in small quantities, the next three slides describe the contents of Appendix A & B
43Appendix ASubstance IdentificationHealth Hazard Data
44Appendix B Permissible Exposure Limit (PEL) Exposure Monitoring Methods of ComplianceRespiratory ProtectionPersonal protective EquipmentHousekeepingHygiene Facilities
45Appendix B Medical Surveillance Medical Removal Training and InformationSignsRecord keeping
46Health Exam Requirements (Applicable to Lead Workers only)
47Lead Medical Surveillance OSHA standards require biological monitoring and medical surveillance for all employees exposed to levels of lead above the action level of 30 µg/m3 for more than 30 days per yearThe blood lead level of all employees who are exposed to lead above the action level is to be determined at least every six months.The frequency is increased to every two months for employees whose last blood lead level was above 40 µg/100 g
48Health Protection/Medical Surveillance Obtain a Blood Lead Level (BLL)Maintain blood lead levels to below 40 micrograms per 100 grams of whole blood (40 µg/100g).Recommend a level below 30 µg/100g for workers who intend to have childrenBlood lead measurements show the amount of lead circulating, but not the amount stored in tissue.
49Lead Medical Examination A medical examination is given to lead workers:AnnuallyImmediately, if an employee has developed signs or symptoms commonly associated with lead poisoningWhenever an employee desires medical advice regarding lead exposure and the ability to procreate a healthy childImmediately if the employee has demonstrated difficulty in breathing during a respirator fitting test or during respirator use
50Lead Poisoning Prevention (For the Non-Lead Worker) Minimizing exposure to lead is the key to minimizing health effects
51Housekeeping/Work Practices When working with products that contain lead, such as lead-based paints and lead blocks:Use exhaust ventilation to capture dust/fumes whenever possible;HEPA vacuum dust-covered work surfaces; dry sweeping or compressed air is prohibited; wet methods may be used;Do not eat, drink, smoke or apply cosmetics in areas where lead/lead dust is present;Wash hands and face after lead work;Wear protective clothing to avoid getting dust on your clothes and then bringing it home to spouse and children.
52Lead Dust ControlRecommend that HEPA vacuum be used to pick up lead paint of other lead dust.
53Lead Dust ControlYou must use caution if you perform any of the following activities where lead containing coatings or paint are presentIt would be a good idea to coordinate these activities with DES to assure lead exposure is controlledmanual demolition of structuresmanual scrapingmanual sandingheat gun applicationspower tool cleaningrivet bustingweldingcuttingtorch burningabrasive blastingcleanup activities where dry expendable abrasives are usedabrasive blasting enclosure movement and removal
54Prohibited Lead Removal Methods The contractor performing abatement of lead-based paint may not use the following methods to remove the paint:Open flame burningDry sanding (unless used with a HEPA vacuum)Open abrasive blastingUncontained hydro-blastingMethylene chloride for interior use (exception, methylene chloride may be used in interior work areas for localized touch-up)Dry scrapingHeat gun operating at or above 1,100°F
55Approved Lead Control Methods Wet scrapingChemical strippingHeat Gun
56Approved Lead Control Methods ReplacementAny component part of a building may be abated by replacement with a part free of lead-containing substancesFor instance, the lead-painted component (such as a doorframe or a window frame) is removed entirely and in one piece.
57Could I find lead outside of campus? If your home was built before 1978, it may contain lead based paint. Hobbies: stained glass, home remodeling or painting, recreational target shooting, melting lead for fishing weights, lead glaze in ceramics.Non-occupational exposures: backyard scrap metal recycling, leaded crystal tableware, cookware, folk remedies, pica, mine tailings, beauty products (eye make up, certain hair dyes).