ASBESTOS AWARENESS. What is Asbestos? Asbestos

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ASBESTOS AWARENESS 1of 63 What is Asbestos? Asbestos is the name for a group of naturally occurring minerals that separate into very fine fibers that are very durable and extremely heat resistant.

1 ASBESTOS AWARENESS 1of 63 What is Asbestos? Asbestos is the name for a group of naturally occurring minerals that separate into very fine fibers that are very durable and extremely heat resistant. Because of these properties they have been used quite extensively in building materials and have a wide range of applications 2of 63 Asbestos Naturally occurring fibrous hydrated mineral silicates 3of 63

2 Types of Asbestos Fibers Chrysotile Amosite Crocidolite Anthophyllite Tremolite Actinolite General Structure of Asbestos Fibrous to the Molecular Level 4of 63 Most Common Types 1. Chrysotile 2. Amosite 3. Crocidilite Pure Chrysotile Magnified 64X 5of 63 Ancient History of Asbestos Use 6of 63

thousand years Modern Day History Began to be used commercially

3 Asbestos has been found in ancient Greek and Roman Architecture 7of 63 8of 63 Some transite water lines have been in use for two thousand years Modern Day History Began to be used commercially in the early 1900 s Peaked between World War II into the 1970 s 9of 63

4 Modern Day History In the mid 1970 s several major kind of asbestos containing materials were banned by the EPA because of the growing concern of health effects Spray applied insulation Fireproofing Acoustical surface material 10 of 63 The Ban Continues In July of 1989, the EPA promulgated the Asbestos Ban Phasedown Rule Applies to new product manufacture, importation and processing Essentially bans almost all asbestos-containing materials (ACM) in the United States by 1997 Does not require the removal of ACM currently in place in buildings 11 of 63 How Much is Too Much??? According to EPA standards Any material containing more than 1% asbestos is classified as containing asbestos According to OSHA s Hazard Communication Standard Any material containing 0.1% or more of asbestos must be labeled 12 of 63

5 Where Can Asbestos be Found? Cement Pipes Cement Wallboard Cement Siding Asphalt Floor Tile Vinyl Floor Tile Vinyl Sheet Flooring Flooring Backing Construction Mastic Acoustical Plaster Decorative Plaster Textured Paints/Coatings Ceiling Tiles Spray Insulation Blow-in Insulation Fire-proofing Materials Thermal Tape High Temperature Gaskets Laboratory Hoods Laboratory Tabletops Laboratory Gloves Fire Blankets Fire Curtains Elevator Panels Elevator Break Shoes HVAC Duct Insulation Boiler Insulation 13 of 63 And the List Goes On Breeching Insulation Cooling Towers Flex Fabric Connections Pipe Insulation Heating and Electric Ducts Electric Panel Partitions Electric Cloth Electric Insulation Spackling Compousds Chalkboards Roofing Shingles Base Flashing Thermal Paper Products Fire Doors Caulking/Putty Adhesives Wallboard Joint Compounds Vinyl Wall Covering Just To Name A Few 14 of 63 Lets Look Around Steam pipes with asbestos insulation, condensate lines with non-asbestos insulation 15 of 63

6 Lets Look Around Asbestos ceiling tiles 16 of 63 Lets Look Around Lab table top containing asbestos 17 of 63 Lets Look Around Asbestos material in a fume hood 18 of 63

7 Lets Look Around Asbestos pegboard 19 of 63 Lets Look Around FLOOR TILE WITH MASTIC 20 of 63 Collecting Fibers 21 of 63

8 22 of 63 Two risks in one: 23 of 63 Guess What Was Used For the Snow? Did I Mention Chrysotile Asbestos is As White As Snow 24 of 63

9 Why Use Asbestos Asbestos was widely used in the construction industry because of its Strength Ability to resist burning Insulation properties Corrosion resistance 25 of 63 When is Asbestos a Problem? Intact, undisturbed ACM does not present a health risk The mere fact that asbestos is in a building does not mean the health of the occupants is endangered When ACM become damaged, disturbed, or deteriorated they can become AIRBORNE and in this form they can become a health risk Asbestos that has the potential to become airborne is referred to as being FRIABLE FRIABLE ASBESTOS IS A HEALTH HAZARD 26 of 63 The Health Risks Inhalation or ingestion of asbestos fibers has been associated with a variety of diseases Asbestosis A diffuse non-malignant scarring of the lung tissue Bronchogenic Carcinoma A malignancy of the lining of the lungs Mesothelioma A diffuse malignancy of the lining of the chest cavity or the lining of the abdomen Cancer of the Stomach Colon Rectum Association between these forms of cancer and asbestos has not been well established 27 of 63

10 Health Risks Smoking of the preexistence of any other respiratory problems such as emphysema, asthma, etc., may increase the health risk of asbestos exposure 28 of 63 Macrophage White blood cells can break down bacteria, but not asbestos. 29 of 63 LUNG CANCER CELL 30 of 63

DNA Fibers can be small enough to disrupt DNA. 31 of 63 Five Facts About Asbestos 1. Although asbestos is hazardous the risk of asbestosrelated disease depends upon exposure to airborne asbestos 2.

11 DNA Fibers can be small enough to disrupt DNA. 31 of 63 Five Facts About Asbestos 1. Although asbestos is hazardous the risk of asbestosrelated disease depends upon exposure to airborne asbestos 2. The average airborne levels in buildings seems to be very low, therefore the risk to occupants is low 3. Removal is not always the best solution. Improper removal can aggravate the problem 4. EPA only requires removal in order to prevent a significant public exposure to airborne fibers during building renovations or demolition 5. EPA does recommend a proactive in-place management program whenever ACM is discovered 32 of 63 Asbestos Hazard Emergency Act AHERA Requires schools K-12 to Conduct inspections Develop comprehensive management plans Select responsible actions to deal with the asbestos hazard Does not require the school to remove all asbestos The key element is to require the school to develop a Operations and Maintenance Program if friable asbestos or potentially friable asbestos is found 33 of 63

Identification Asbestos cannot be positively identified by the naked eye although an experienced individual may be able to presumptively recognize

12 Identification Asbestos cannot be positively identified by the naked eye although an experienced individual may be able to presumptively recognize suspicious materials. Positive identification requires the use of Polarizing light microscopy. 34 of 63 Laboratory Analysis 35 of 63 Boring Samplers 36 of 63

13 Laboratory Analysis Sample prep tools 37 of 63 Laboratory Analysis A sample under the stereoscope 38 of 63 FIBERGLASS AMOSITE 39 of 63

14 How do we know if it s asbestos? 40 of 63 Plaster Asbestos in plaster at 64X 41 of 63 cellulose CELLULOSE INSULATION 42 of 63

15 Condensate line insulation, 64X 43 of 63 CHRYSOTILE IN FLOOR TILE DEBRIS, 64X 44 of 63 DEBRIS FROM OLD BUILDING, 7.5X 45 of 63

16 CHRYSOTILE IN MASTIC, 7.5X Fibers in Mastic, 7.5X 46 of 63 CHRYSOTILE IN MASTIC, 64X 47 of 63 TUFT OF FIBERS PULVERIZED TILE, 7.5X 48 of 63

17 CHRYSOTILE IN FLOOR TILE, 64X 49 of 63 PULVERIZED FLOOR TILE 50 of 63 Sample of condensate line insulation 51 of 63

18 Chrysotile 64X Pure chrysotile at 64X 52 of 63 Chrysotile with crossed polars, 100X 53 of 63 Disp. chrys Chrysotile, dispersion staining 54 of 63

19 CELLULOSE, DISPERSION STAINING CELLULOSE, DISPERSION STAINING 55 of 63 AMOSITE, DISPERSION STAINING 56 of 63 CROCIDOLITE, FIRST ORDER RED 57 of 63

20 POLYESTER AND FIBERGLASS 58 of 63 RAZOR BLADE WITH CHRYSOTILE 59 of 63 OSHA PEL = 0.1 fiber/cc How many fibers per cubic meter? 60 of 63

21 Hint: There are a million cc s in a cubic meter 61 of fibers per cubic meter How many fibers is that per 8-hour day? 62 of 63 A LOT 63 of 63

Asbestos. Asbestos is a naturally occurring fibrous mineral that is mined from the earth and

Asbestos. Asbestos is a naturally occurring fibrous mineral that is mined from the earth and Asbestos What is asbestos? Asbestos is a naturally occurring fibrous mineral that is mined from the earth and found in many parts of the world. Its composition is such that it can be separated into smaller