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Asbestos Awareness

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Asbestos Awareness - UNC EHS

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Asbestos Awareness

  1. 1. ONLINE SELF-STUDY ASBESTOS – THE REALITY OF NATURE
  2. 2. Key Points  History of asbestos  Origin of asbestos  Characteristics of asbestos  How asbestos is used  Current asbestos products  Relevant definitions  Health effects  Regulations  UNC’s Asbestos Control Program
  3. 3. Asbestos in History  The first recorded use of asbestos- wick material for oil lamps by the Egyptians, Greeks and Romans  Name originates from the Greek for “inextinguishable” or “indestructible.”  Woven into cloth, asbestos provided resistance to fire, especially impressive for shrouds of the deceased whose cremation was open to public display.  2500 BC in Finland-asbestos was added to clay pots for greater strength. Launch Internet Explorer Browser.lnk
  4. 4.  Middle Ages Asbestos was used to insulate armor  Industrial Revolution Asbestos was used to insulate boilers, steam pipes, turbines  Twentieth century – World War II + next 30 years Asbestos was used for insulating; fireproofing; sound- proofing; decorating; strengthening Today, over 3,000 products contain asbestos throughout the US. Asbestos in History
  5. 5. What is Asbestos?  Generic name given to a fibrous variety of six naturally occurring minerals that are mined from the earth:  Chrysotile  Amosite  Crocidolite  Anthophyllite  Tremolite  Actinolite Asbestos Ore
  6. 6. What is Asbestos?  Asbestos is made up of fiber bundles.  The bundles have splaying ends and are extremely flexible.  Asbestos possesses the following qualities:  High tensile strength  Flexibility  Resistance to chemical and thermal degradation  High electrical resistance  Can be woven
  7. 7. What is Asbestos?  Asbestos is a naturally occurring mineral with thin, separable fibers.  Asbestos fibers have no detectable odor or taste.  Fibers do not dissolve in water or evaporate.  The fibers are not broken down into other compounds, and remain virtually unchanged over long periods of time (but may break into more and shorter fibers).  The fibers may remain suspended in the air for a long time and be carried long distances by wind or water before settling.
  8. 8. Asbestos Minerals Asbestos is classified into two groups:  Serpentine Group-Characterized by curly and wavy structures and can be woven.  Chrysotile: 95% of asbestos found in building products
  9. 9. Referred to as the “White Asbestos” Chrysotile
  10. 10. Asbestos Minerals  Amphibole Group- A class of asbestos that includes silicates of magnesium, iron, calcium, and sodium. Fibers are straight and brittle. Types: Amosite Anthophyllite Crocidolite Actinolite Tremolite
  11. 11. Amosite- “Brown Asbestos” Referred to as the “Brown Asbestos”
  12. 12. Tremolite
  13. 13. Crocidolite-Referred to as the Blue Asbestos Anthophyllite
  14. 14. Examples of Asbestos Mines, both Operational and Closed
  15. 15. Mt. Belvidere Mines- Vermont (abandoned) Black Lake Mine-Thetford Mines located in Québec, Canada (operational)
  16. 16. KRAC Inc.’s Joe Asbestos Mine  The last U.S. asbestos operation mined chrysotile deposits in California (San Benito County); this operation closed in 2002.  The mine had been in operation since 1963 and was the only producer of asbestos in the United States.  Products were primarily exported to Japan.
  17. 17. History of the Mines  60 mines once operated in Eastern US  1894-The first large-scale production of asbestos in Georgia (anthophyllite)  Anthophyllite asbestos was mined in Georgia, North Carolina, Virginia, Maryland, Connecticut, and Massachusetts.
  18. 18. Map Location of Asbestos Mines in North Carolina *Note: Green indicates former asbestos mine
  19. 19. Are We Using Asbestos in Products Today?
  20. 20. Current Asbestos Production (Asbestos Trade Data 2007) Top Five Producers (metric tons): Russia 925,000 China 380,000 Kazakhstan 300,000 Brazil 243,230 Canada 236,185 Top Five Users (metric tons): China 626,099 India 302,139 Russia 280,019 Kazakhstan 108,951 Brazil 93,780 Source: USGS
  21. 21. Answer: YES! Floor tile box cover received at UNC 2007
  22. 22. This product was manufactured in China 2007 for Planet Toys in NYC and the fingerprint powders contain asbestos .
  23. 23. Contains asbestos per Asbestos Disease Awareness Organization 2007
  24. 24. Clay contains asbestos per Asbestos Disease Awareness Organization 2007 Manufactured in China for Omnimodels in Jacksonville, Fla.
  25. 25. 3M Duct Tape contains asbestos per Asbestos Disease Awareness Organization 2007 Note: Manufactured in Canada for 3M. -3M reports the content is <1%
  26. 26. DAP Spackling Paste contains asbestos per Asbestos Disease Awareness Organization 2007
  27. 27. Roofing Sealant contains asbestos per Asbestos Disease Awareness Organization 2007
  28. 28. Asbestos Yarn made in China Used as caulking, sealing and heat insulation materials on thermal installations and heat conduction systems operated at temperatures up to 282-582 fahrenheit. And also used for making other asbestos products. Dust free yarn: Composed of around 99% asbestos fiber and 1% chemical powder, color: White, temperature: 550 degrees F Dusted yarn: Composed of 70-85% asbestos fiber and 15-25% cotton fiber, color:
  29. 29. Asbestos Millboard made in China Made from high grade asbestos fiber, used for making fire screens, protecting walls, lining furnaces and anything that requires heat and fire protection. It can also be used as electrical insulation.
  30. 30.  Argentina  Australia  Austria  Belgium  Bulgaria  Chile  Croatia (2005)  Czech Republic (2005)  Cyprus (2005)  Denmark  Egypt  Estonia (2005)  Finland  France  Gabon  Germany  Greece (2005)  Hungary (2005) • Oman • Poland • Portugal (2005) • Romania • Saudi Arabia • Seychelles • Slovak Republic • Slovenia • South Africa • Spain • Sweden • Switzerland • United Kingdom • Uruguay Nations that Ban All Forms as of 2009 (USA not included!) • Honduras • Kuwait • Jordan • Japan • Italy • Ireland • Iceland • South Korea • Latvia • Lithuania (2005) • Luxembourg • Malta (2005) • Netherlands • New Caledonia • Norway *Reference: International Ban Asbestos Secretariat- updated 08/27/09/Exemptions for minor uses are permitted in some countries
  31. 31. Definitions Asbestos Containing Materials (ACM): Any materials containing more than 1% asbestos.
  32. 32. Definitions  Friable Asbestos Containing Material (ACM): When dry, may be crumbled, pulverized, or reduced to powder by hand pressure…including damaged non-friable materials such as floor tiles
  33. 33. Definitions of Asbestos Containing Building Materials (ACBM):  Thermal System Insulation (TSI): ACM applied to pipes, fittings, boilers, breeching, tanks, ducts or other structural components to prevent heat loss or gain.  Surfacing Materials (SM): Material that is sprayed, troweled-on or otherwise applied to surfaces (such as acoustical plaster on ceilings and fireproofing materials on structural members, or other materials on surfaces for acoustical, fireproofing, and other purposes)
  34. 34. Definitions of Asbestos Containing Building Materials (ACBM):  Miscellaneous Materials (MM): Interior building material on structural components, structural members or fixtures such as floor and ceiling tiles, and does not include surfacing material or thermal system insulation.
  35. 35. Definitions PACM- Presumed Asbestos Containing Materials means TSI and surfacing materials found in buildings constructed no later than 1980. Photo depicts spray-applied fireproofing (SAF) material in Mitchell Hall (this material has since been abated and replaced with a non-asbestos SAF)
  36. 36. Surfacing Material Spray-Applied Fireproofing Material Sprayed-on, troweled-on or otherwise applied to surfaces.
  37. 37. Spray-Applied Ceiling Material This photo depicts spray-applied ceiling material in Daniels Student Store and Brauer Hall. This material was removed in both buildings prior to renovations. Similar material still exists in Carrington Hall.
  38. 38. Surfacing Material Ceiling surfacing material located in Kenan Laboratories
  39. 39. Spray-Applied Fireproofing Material
  40. 40. Surfacing Material Plaster wall material located in Bowman Gray Pool in Woollen Gymnasium
  41. 41. Wall Surfacing Material Wall surfacing material located on the block walls of Carrington Hall, Hinton James Residence Hall, and Morrison Residence Hall.
  42. 42. Thermal System Insulation Material applied to pipes, fittings, boilers, breeching, tanks, ducts, or other interior structural components to prevent heat loss or gain or water condensation.
  43. 43. Thermal System Insulation Delaminated TSI in the wall cavity at Wilson Hall. The renovation did not include the removal of TSI in the walls.
  44. 44. Note the debris from delaminating pipe insulation This type of contamination should be reported to EHS immediately at 962-5507.
  45. 45. Miscellaneous Materials All other materials that are not surfacing or thermal system insulation 9” floor tile Transite pipe for fumehood exhaust system
  46. 46. Miscellaneous Materials Suspended ceiling tiles Transite lining (asbestos) in fumehood
  47. 47. Miscellaneous Material Joint compound associated with drywall located in buildings such as Davie Hall, Kenan Laboratories, Med Wings, and NCSEAA Building.
  48. 48. Miscellaneous Materials Asbestos containing sub-floor material located in the Steele Building.
  49. 49. Can fire-rated doors contain asbestos? Answer: Yes, This is fire door insulation.
  50. 50. The Many Uses of Asbestos  Fireproofing  Decorative Purposes  Thermal Insulator  Condensate Control  Acoustical Insulator
  51. 51. Review the next slide to identify all the potential locations of asbestos containing materials within a home
  52. 52. Other Sources  Asbestos may be released to water from a number of sources, including erosion of natural deposits, corrosion from asbestos-cement pipes, and disintegration of asbestos roofing materials with subsequent transport into sewers.  Airborne exposure to asbestos may occur through the erosion of natural deposits in asbestos-bearing rocks, from a variety of asbestos-related industries, or from clutches and brakes on cars and trucks.
  53. 53. Health Effects The primary health effects from asbestos exposure relate to the lung and respiratory system.
  54. 54. Health Effects The potential for harm from asbestos depends on:  Fiber size and type  Length of exposure  Concentration of respirable fibers  Individual susceptibility  Influence of other factors
  55. 55. The risks of disease may be greater for fibers longer than 5 microns (µm) in (1 inch = 25,000 microns) Most fibers are removed from the lungs within a few hours. Long and/or thin fibers that reach the deepest parts of lung may stay for years or may never be removed.
  56. 56. Respiratory System  Larynx (upper part of windpipe)  Trachea (tube)  Bronchial tree  Bronchus (large air passage to the lung)  Bronchioles (fine air passage)  Alveoli (air sac)
  57. 57. Body’s Defense Mechanisms:  Nasal Hairs  Cilia  Mucus  Mucociliary Escalator (Cilia and mucus create combined system)  Macrophage
  58. 58. Nasal Hairs  A human’s nasal hairs are the first line of defense in the respiratory system.  Nose hairs act as a defense against harmful environmental pathogens such as dust, germs, and particulates.  The nasal hairs filter out particles greater than 10 µm in diameter.
  59. 59. Cilia and Mucociliary Escalator  The second line of defense are the tiny hair-like bodies called cilia that work like brooms to sweep out germs, mucus, and dirt/asbestos from your lungs. Note how the purple invader has been trapped in the mucus and is being pushed upward towards the throat.
  60. 60. Cilia and Mucociliary Escalator  The cilia are continually beating, pushing mucus up and out into the throat.  The mucociliary escalator is a major barrier against infection.  This system is able to filter out particles between 2-10 microns (µm) in diameter.
  61. 61. Effects of Nicotine from Cigarette Smoke  Nicotine in cigarettes causes a paralysis of the cilia.  Without the cleansing function of the cilia, air contaminants are breathed farther into the lungs, staying longer in contact with the lung tissue.  Thus, a person who smokes cigarettes loses a major defense mechanism of the respiratory system.
  62. 62. Effects of Nicotine  Smoking cigarettes combined with exposure to asbestos creates a synergistic effect and increases the cancer risk 50 to 80 times more than from asbestos exposure alone. Illustration of a non-small cell cancer
  63. 63. Alveoli Alveoli are small air sacs in the lungs, as small as a grain of sand. There are billions of alveoli in the lungs. The purpose of alveoli is to supply de-oxygenated blood with a supply of oxygen through gas exchange.
  64. 64. Macrophage  Particles finding their way into the alveoli are less than 2 microns (µm) in diameter.  Within the alveoli are macrophages--large white cells—moving about in search of particles to consume. Macrophage means “big eater”. Note: A human hair is 40 to 120 microns (µm) in diameter.
  65. 65. Macrophage  The macrophages ingest unneeded or dangerous substances in the blood or tissue. They digest organic substances. They simply store minerals such as silica and asbestos that they can’t digest.  Storage of silica and asbestos fibers leads to inflammation and the development of scar tissue.
  66. 66. Notice the asbestos fibers have a barbed fishhook look. They can break off into smaller fibers like splinters from wood.
  67. 67. Asbestosis Characterized by fibrotic scarring of the lung. This is a restrictive lung disease which reduces the capacity of the lung.
  68. 68. Asbestosis  A chronic and progressive lung disease caused by inhaling asbestos fibers over a long period of time.  It takes 5- 15 years to develop  Lung inflammation from fibers causes scarring (fibrosis) and stiffening of the lung. Oxygen exchange decreases.
  69. 69. Asbestosis  Symptoms – shortness of breath, cough, chest tightness  The higher the dust levels the more likely asbestosis will occur and with greater severity.
  70. 70. Lung Cancer  Asbestos is only one of many causes of lung cancer.  A cigarette smoker who works with asbestos is 80 times more likely to get lung cancer than the non-smoker population.  Symptoms: persistent cough, weight loss, cough up blood  It takes 20-30 years to develop
  71. 71. Mesothelioma  Cancer of the chest cavity lining (mesothelium), or the lining of the abdominal cavity  It takes 30-40 years to develop  Most cases are attributed to the amphibole form of asbestos (ie. Libby, Montana)
  72. 72. Mesothelioma  Symptoms: shortness of breath, chest pain, weight loss  Has occurred in people without direct occupational exposure but exposed to low quantities of dust
  73. 73. Is There a Safe Level of Exposure to Asbestos?  The level of exposure that may cause health effects is not known.  It is therefore important to keep exposure to asbestos fibers as low as possible and precautions must always be taken.
  74. 74. . The US Acting Surgeon General Steven Galson stated April 1, 2009, "I urge every American to become aware of the public health issues of asbestos exposure and the steps they can take to protect their health. There is no level of asbestos exposure that is known to be safe and minimizing your exposure will minimize your risk of developing asbestos-related disease."
  75. 75. Health Effects: Common Misconceptions Asbestos has not been shown to increase the risk of:  Asthma  Allergic reactions  Headaches
  76. 76.  If you would like to quit smoking, here is what you do:  Step 1 – Call the North Carolina Quitline 1-800—QUIT-NOW (1-800-784-8669) to register for free counseling. The NC Quitline will provide you with some coaching sessions, help you develop a plan to quit, provide you with reading materials, and be available for counseling.  Step 2 – If you want a prescription for the OTC Nicotine Patch (patches are free), call the University Employee Occupational Health Clinic (6-9119) to set-up an appointment. Note: If you want an alternative treatment, contact your personal healthcare provider.  Step 3 – Take your prescription to the local participating network pharmacy. Smoking Cessation
  77. 77.  If the Nicotine Patch was ineffective, you can request a prescription medication such as Chantix. Please note that prescription medications are priced per the BCBS Insurance Plan.  Call the UEOHC to schedule an appointment with the Smoking Cessation Nurse at 6-9119. Smoking Cessation
  78. 78. Tragedy in Libby, Montana Historical case in the United States that shows the effects of asbestos exposure within a community that impacted both children and adults.
  79. 79. Libby, Montana  Libby, Montana is a community that suffers from the effects of airborne asbestos that created a death toll that continues to rise.  Fibrous and asbestiform amphibole minerals (Tremolite) with vermiculite were mined and milled near the town from 1923 to 1990.  A majority of the community was contaminated by asbestos including school yards, trees, fields, homes, etc.  June 17, 2009, EPA issued a Public Health Emergency (PHE) at the Libby Asbestos Superfund under the Comprehensive Environmental Response, Compensation, and Liability Act (or Superfund) that conditions at the site constituted a Public Health Emergency.
  80. 80. Libby, Montana –Attic Insulation
  81. 81. Who Regulates Asbestos in the United States?  The Environmental Protection Agency  AHERA  NESHAP  The Occupational Safety and Health Administration  Construction Standard  General Industry Standard
  82. 82. Who Regulates Asbestos in the United States?  The Department of Transportation  State Agencies/NC-DHHS  Local Municipalities
  83. 83. Who and What Defines an Asbestos Containing Material? According to EPA and OSHA, an asbestos containing material (ACM) is defined as any material which contains more than 1 percent asbestos. However, OSHA released an interpretation of this definition in November 2003.
  84. 84. OSHA Letter of Interpretation OSHA provided a letter of interpretation concerning the definition of ACM and additional requirements.  Letter Dated: November 24, 2003  The letter states that asbestos work practice requirements and prohibitions must be observed regardless of the exposure levels and of the percentage of asbestos (percentages <1%) in the installed construction materials are: 29 CFR 1926.1101(g)(1)(ii).
  85. 85. OSHA Letter of Interpretation The letter states that work practice procedures and requirements must include the following:  Wet methods  Prompt cleanup and disposal  Air monitoring for exposure assessments
  86. 86. OSHA Letter of Interpretation Prohibitions include the following: Prohibits the use of high-speed abrasive disc saws Prohibits compressed air use to remove asbestos Prohibits employee rotation as a means of reducing employee exposure to asbestos.
  87. 87. OSHA Classes of Asbestos Work OSHA divides work practice procedures into four classes: Class I: The removal of thermal system insulation (TSI) & Surfacing materials (SM) (Applies to projects involving the removal of more than 25 linear feet or 10 square feet)
  88. 88. OSHA Classes of Asbestos Work Class II: The removal of miscellaneous materials (MM) (Applies to projects involving the removal of materials other than TSI or SM and may include such materials as asbestos-containing wallboard, floor tile and sheeting, roofing and construction mastics)
  89. 89. OSHA Classes of Asbestos Work Class III: Repair & maintenance of TSI & SM (Applies to removal activities that restrict the amount of material disturbed, meaning the quantity of asbestos containing material that would fit in one glovebag or one waste bag)
  90. 90. OSHA Classes of Asbestos Work Class IV: Maintenance & custodial work Contact with the material can occur, but no disturbance of the material (such as breakage of a floor tile) is allowed. Note: With Class IV work, you can contact asbestos containing material, but you cannot disturb it.
  91. 91. What Do We Mean When We Say “Airborne Asbestos Fibers”?
  92. 92. Definitions for Airborne Asbestos Fibers  OSHA Regulations state that a fiber must be > 5 microns (μm) in length and have a length to width aspect ratio of 3:1. The aspect ratio of 3:1 means the fiber is three times as long as it is wide. See diagram.  The method used to analyze air samples for the determination of airborne asbestos concentrations is the NIOSH 7400 Method using Phase Contrast Microscopy (PCM).  Sample results are reported in fibers per cubic centimeter of air (f/cc).
  93. 93. Phase Contrast Microscopy (PCM)  PCM cannot distinguish asbestos fibers from non- asbestos fibers; thus, the counting rule is applied to all fiber-like dust particles. View under PCM Microscope
  94. 94. Definitions for Fibers of Airborne Asbestos  US EPA under the AHERA Regulations requires analysis of air samples using Transmission Electron Microscopy (TEM). NOTE: TEM can distinguish between asbestos and non-asbestos fibers.  TEM analysis is based upon six regulated asbestos materials displaying characteristic morphology, chemistry, and/or  Crystal structure  >0.5 μm in length  Minimally, 5:1 (length to width) aspect ratio  Samples are reported in structures per millimeter square (s/mm2)
  95. 95. TEM Microscopic View Magnified 1000X and Represents 5 µm
  96. 96. An employer must ensure that no employee is exposed to an airborne concentration of asbestos in excess of:  0.1 f/cc as an 8 hour time weighted average (TWA). This is referred to as the Permissible Exposure Limit or PEL.  1.0 f/cc over a 30 minute sampling period. This is referred to as the Excursion Limit. OSHA Regulatory Requirements
  97. 97. Public Area Standard Upon successful completion of an asbestos abatement project, air monitoring is performed to ensure that airborne concentrations for asbestos within the project area are below:  0.01 f/cc (by PCM) EPA standard  70 structures/mm2 (ave. by TEM) AHERA standard NCDHHS Regulatory Requirements
  98. 98. What Does Fibers/CC Mean and What Do These Levels Mean?
  99. 99. How many asbestos fibers does the OSHA PEL allow us to breathe in an 8 hour day?  OSHA allows 2,880,000 fibers to be inhaled each shift by workers (based on 0.1 f/cc (OSHA PEL), (using a breathing rate of 10 liters/min.)  The standard was developed to reduce the risks associated with the development of Asbestosis. The risks still exist for the development of Asbestos Lung Cancer and Mesothelioma at lower airborne dust levels.  There is no safe level of asbestos exposure!
  100. 100. How Does UNC Comply With the Regulatory Requirements of EPA and OSHA?  Manages the asbestos containing materials (ACM) in UNC buildings to minimize exposures to personnel and the environment;  Ensures that all removal and disposal of ACM complies with all local, state, and federal regulations; and,  Maintains records of surveys, monitoring activities, maintenance activities involving ACM, and personnel exposure.
  101. 101. Asbestos Building Information and Asbestos Control Program Web Address: http://ehs.unc.edu/oeh/asbestos/
  102. 102. Identifying Asbestos on UNC’s Campus By visiting The Department of Environment, Health and Safety’s website www.ehs.unc.edu, you can review the asbestos building information. Follow these directions: 1. Type in www.ehs.unc.edu 2. Click on Industrial Hygiene in the pick menu on the left side of the web page 3. Click on Asbestos in the pick menu on the left side of the web page
  103. 103. Identifying Asbestos on UNC’s Campus 4. In the center of the page, click on Asbestos Building Inspection Reports 5. You will be prompted to enter your Onygen/Password or your PID number 6. Click “OK” 7. An alphabetized listing of the buildings will appear. Research the building in question.
  104. 104. Current Listing of Asbestos Ceiling Tiles on Campus Note: This listing is the most current information; however, a comprehensive ceiling tile inspection has not been performed throughout the campus.
  105. 105. Buildings on Campus with Spray- Applied Ceiling Material  Alumni Building-ME rooms on all floors  Carrington Hall  Hinton James Dormitory  Kenan Laboratories  Mitchell Hall  Van Hecke-Wetach Hall
  106. 106. Buildings with Spray-Applied Fireproofing  Hamilton Hall  Bank of America (leased space)
  107. 107. Regulatory Signs & Labels This sign will be posted at entrances to mechanical rooms/areas which contain ACM or PACM on UNC Campus.
  108. 108. Regulatory Signs & Labels This sign is required at entrances to all asbestos abatement containment areas. Display of this signage means “NO ENTRY”.
  109. 109. Signs & Labels This label is affixed to some products containing asbestos: Danger, Contains Asbestos Fibers Avoid Creating Dust Cancer & Lung Disease Hazard
  110. 110. Signs & Labels  An example of signage on transite (asbestos) ductwork
  111. 111. What is a HEPA filter? High Efficiency Particulate Air (HEPA) Filter: Filter capable of trapping & retaining at least 99.97% of particles 0.3 micrometer in diameter For comparison: Human Hair = 40-120 microns
  112. 112. Here is an example of HEPA vacuum cleaner used to cleanup asbestos debris and dust. Regular vacuum cleaners are not permitted during the cleanup of asbestos debris.
  113. 113. Types of Control Measures at UNC Both EPA and OSHA require engineering controls and work practices including:  Wet Methods  HEPA Vacuum  Prompt Cleanup These 3 methods are mandated for all asbestos material handling no matter what the air levels are.
  114. 114. Five Control Options at UNC  Removal (abatement): The taking out or the stripping of substantially all ACBM from a damaged area.  Encapsulation: The treatment of ACBM with a material that surrounds or embeds asbestos fibers in an adhesive matrix.  Repair: Returning damaged ACBM to an undamaged condition or to an intact state so as to prevent fiber release.
  115. 115. Five Control Options at UNC  Enclosure: Placing an airtight, impermeable, permanent barrier around ACBM to prevent the release of asbestos fibers into the air.  Operations and Maintenance: Implementing work practices to maintain friable ACBM in good condition, ensure clean up of asbestos fibers previously released, and prevent further release by minimizing and controlling friable ACBM disturbance or damage.
  116. 116. Protecting health near large abatement projects UNC manages the Asbestos Control Program by:  Hiring experienced professionals  Hiring third party air monitor Air samples during work (ex. occupied office) Air samples for clearing area for re-occupancy  EHS conducting site inspections
  117. 117. Did You Know…?  1.3 million workers exposed in the U.S.  Construction Industry  renovation, demolition heaviest exposures • General Industry manufacture of asbestos products automotive brake and clutch repair  housekeeping, custodial
  118. 118. EPA Requires Building Inspections Prior to a renovation or demolition, the facility or affected area must be inspected for ACM.
  119. 119. OSHA Requires Building Inspections Before work…building and facility owners shall determine the presence, location, and quantity of ACM…
  120. 120. The regulations cover any activity releasing or likely to release asbestos fibers into the air: Which Activities Are Regulated?  Construction  Renovation  Remodeling  buildings  structures  mechanical piping equipment and systems  ships  other facilities  Maintenance and/or repair  Demolition  Removal, disposal Covers work done in: Asbestos debris from demolition project
  121. 121. How Do We Identify ACM at UNC?  Wood  Glass  Metal  Fiberglass (no black mastic coating)  Rubber  Cement  Concrete masonry units (CMU)-not coated All materials with the exception of : shall be treated as suspect material and sampled according to the regulatory requirements.
  122. 122. Identifying Suspect Materials  Bulk samples are collected from suspect materials to identify ACM or Presumed ACM (PACM).  An assessment of the material’s condition is documented.  If necessary, control options are recommended.  A report is prepared to document the findings
  123. 123. How Do We Identify ACM? 1.When the sample arrives to the lab, they will perform PLM analysis. 2. PLM Analysis identifies the following: Polarized Light Microscopy a. If the material has asbestos fibers b. Which asbestos minerals are present c. What percentage of asbestos is in the material Note: Photograph depicts chrysotile asbestos under PLM.
  124. 124. Photograph depicts chrysotile asbestos under PLM
  125. 125. How Do I Protect Myself and Others From Asbestos Exposure?  When you identify damaged building materials such as water-damaged ceiling tiles, plaster, drywall, etc. within a building you service, contact your supervisor and report the damage.  If the material contains asbestos or is suspected of containing asbestos, the supervisor shall contact EHS at 962-5507 to report the damage.  Isolate the area by closing the door and placing a DO NOT ENTER sign on the outside of the door.
  126. 126. The Do’s and Don’ts at UNC  Do contact EHS if you notice damaged asbestos containing material(s).  Do not clean up the damaged asbestos containing material(s).  Provided that the ceiling tile is not disturbed, do perform routine cleaning of heating and cooling air diffusers within a room even if the adjacent ceiling tile contains asbestos.  Provided that the floor tile is intact, do perform routine cleaning of asbestos containing floor tiles.
  127. 127. The Do’s and Don’ts at UNC What types of activities cannot be performed on asbestos containing materials?  Drilling, cutting, sanding, or abrading  Dusting or dry-sweeping the material  Hammering a nail into the material
  128. 128. UNC Asbestos-Related Questions/Help If you have any questions related to asbestos or work practice procedures that may potentially disturb asbestos containing materials, do not hesitate to ask your supervisor or contact EHS at 962-5507.

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