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Asbestos Awareness Training

Asbestos Awareness Training. Instructor: David L. Patterson Director/Radiation Safety Officer Environmental Health & Safety http://www.csupomona.edu/~ehs Email: dlpatterson@csupomona.edu Phone: (909) 869-3695 Fax: (909) 869-4698. Chrysotile. Amosite. Anthophyllite.

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Asbestos Awareness Training

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  1. Asbestos Awareness Training Instructor: David L. Patterson Director/Radiation Safety Officer Environmental Health & Safety http://www.csupomona.edu/~ehs Email: dlpatterson@csupomona.edu Phone: (909) 869-3695 Fax: (909) 869-4698 Chrysotile Amosite Anthophyllite

  2. Introduction • Instructor • Instructor Qualifications: • Asbestos Hazard and Emergency Response Act (AHERA) Certified Contractor/Supervisor, Inspector, Management Planner, Project Designer • NIOSH Asbestos Air Sampling Course (NIOSH 582), August 1986 • 20 years of experience with asbestos

  3. Introduction • Purpose of class • Provide general information regarding asbestos to non-asbestos workers • Address question any questions • Overview of class

  4. History • Asbestos - derived from Greek word meaning “inextinguishable” • Early Uses • Spun into cloth similar to cotton • Wicks of lamps • Pottery – Added to clay to give strength

  5. History Continued • Re-discovery • Fell out of use in early A.D. • Rediscovered at the beginning of the industrial revolution • Estimated in 1890 that 1,000,000 tons was used in the U.S. By 1978 6,000,000 tons were used • Common Uses • Name some uses • Note Asbestos Inventory in Training Booklet

  6. Asbestos Types or Species Minerologic Geographic Common Relative Type Class Distribution Name CharacteristicsStrengthsUse Chrysotile Serpentine Quebec, Ontario, White Long, wavy fibers Weak Fabric, pipe 95% of US Canada, Northeast Asbestos flexible runs, asbestos and Southwest US fireproofing, (deposits found in floor tiles 30 of 50 States) Amosite Amphibole South Africa Brown Straight, stout Moderate Elbows of (Cummingtonite Asbestos fibers, bonds pipes, -grunerite) well with fireproofing, 3-5% of US plastics floor tiles asbestos Crocidolite Amphibole South Africa Blue Long. Straight Strongest of Sometimes 1-2% of US Asbestos fibers, acid and the top three mixed with asbestos seawater resistant Chrysotile Fibrous Amphibole -- -- Industrial talc -- Little Tremolite contaminant common use Fibrous Amphibole -- -- Industrial talc -- Little Anthophyllite contaminant common use Fibrous Amphibole -- -- -- -- -- Actinolite

  7. Chrysotile Asbestos Minerologic class: Serpentine US Consumption: 95% of asbestos used in the US Common Name: White Asbestos (bulk amounts appear white) Characteristics: Weak, Long, wavy fibers. Flexible Fibers absorb water. Uses: Textiles, pipe runs, fireproofing, brakes Geographic Distribution: • Quebec and Ontario, Canada • Much of the Northeast and Southeast, USA • Deposits have been found in 30 of 50 States • Serpentine is the California State Rock

  8. Amosite Asbestos (Cummingtonite-Grunerite) Minerologic class: Amphibole US Consumption: 3-5% of asbestos used in the US Common Name: Brown Asbestos (bulk amounts appear brown) Characteristics: Moderate strength straight, stout fibers Uses: Pipe elbows, floor tiles Geographic Distribution: • South Africa primarily • Name is derived from Asbestos Mines Of South • Africa

  9. Crocidolite Minerologic class: Amphibole US Consumption: 1-2% of asbestos used in the US Common Name: Blue Asbestos Characteristics: Strong acid and sea water resistant Uses: Rarely found in US, but when it is, it is often seen mixed with Chrysotile as a strengthening agent Geographic Distribution: • South Africa primarily

  10. Tremolite Minerologic class: Amphibole US Consumption: Rarely used in the US Common Name: None Characteristics: Industrial talc contaminant Uses: Little common use Geographic Distribution: • N/A

  11. Anthophyllite Minerologic class: Amphibole US Consumption: Rarely used in the US Common Name: None Characteristics: Industrial talc contaminant Uses: Little common use Geographic Distribution: • N/A

  12. Actinolite Minerologic class: Amphibole US Consumption: Rarely used in the US Common Name: None Characteristics: N/A Uses: N/A Geographic Distribution: • N/A

  13. When Could You Potentially Be Occupationally Exposed To Asbestos? • Whenever Manufacturing, Cutting or Grinding Asbestos – Containing Materials • Whenever Disturbing Asbestos – Containing Insulation Materials • During Renovation or Demolition Operations • While Removing Asbestos – Containing Tile Flooring, Ceiling, or Insulation Materials • While Occupying Work Areas Near Asbestos-Related Operations

  14. What Are Some Occupations In Which Asbestos May Be Encountered? • Asbestos Abatement Contractors • Plumbing Contractors • Air Conditioning Contractors • Acoustical Products Manufacturers • Brake Lining Manufacturers • Demolition Workers • Auto Mechanics

  15. Some Properties of Asbestos That Result In Industrial and Home Use • Protection from Fire • Absorption of Heat from Friction • High Tensile Strength as a Reinforcing Material • Resistance to Corrosion • Insulation from Heat, Cold, and Noise

  16. Health Effects of Asbestos • Vast majority of asbestos related disease is respiratory • Function of respiratory system & structures • Nose • Mouth • Trachea • Bronchi: Carries oxygen to lungs • Alveoli: where gas exchange occurs with the blood • Pleura: liquid coated membrane that surrounds lungs and allows lungs to slip past the chest wall during breathing

  17. Symptoms & Effects of Asbestos Exposure • Acute Exposure • There Are No Immediate Symptoms or Effects • Chronic Exposure • Shortness of Breath • Dry Cough • Loss of Appetite • Weight Loss • Asbestosis (Lung Fibrosis) • Lung Cancer • Mesothelioma • Intestinal Tract Cancers • Non-respiratory Conditions (warts & intestinal tract cancers) Healthy Lung Diseased Lung

  18. Characterized by fibrotic scarring of the lung. Reduces lung capacity-lungs cannot expand Latency-fifteen to thirty years Clear dose response relationship Greater the exposure, the greater the potential for injury All types of asbestos have been linked to asbestosis Asbestosis

  19. Some fibers are not filtered out in the upper airways Fibers reach the terminal air sacs (alveoli) Macrophages engulf and try to destroy the inert fiber A coating is deposited on the fiber (Fibroblast) Scar tissues forms around the fiber Scarring results in asbestosis Asbestosis Proposed Mechanism

  20. Asbestos related tumors are usually found in the lower lobes Most cancer tumors found are glandular, which is rarely the case in non-asbestos related tumors. Latency Period-twenty plus years No clear dose response relationship & no safe level Lung Cancer

  21. Lung Cancer & Smoking • Risk of getting lung cancer for a smoker is drastically increased • Set probability for general population to 1 • Non-smoking asbestos workers have a probability of 5 and Smoking Non-Asbestos Workers have a probability of 10 • Smoking asbestos workers have a probability of 50-90 • This relationship is more than additive-It is synergistic Non-Asbestos Worker Asbestos Worker Non-smoker 1 5X (general population) 10X 50-90X Smoker

  22. Relationship of Smoking and Lung Function The effect of cigarette smoking and age on lung function. After, age 25, lung function declines at a slow rate. Smoking accelerates this decline, leading to disability or death at an early age.

  23. Asbestos Related Lung Cancer & Smoking Two Proposed Mechanisms • Mechanism 1 • Ciliated cells along the airways are temporarily paralyzed by smoke • Unwanted dust & fibers cannot be cleared • This allows them to work down to the alveolar region or imbed into tissue.

  24. Asbestos Related Lung Cancer & Smoking Two Proposed Mechanisms • Mechanism 2 • Inhaled asbestos is trapped in fibrotic areas • Clearance by ciliated cells is disrupted • Tobacco smoke is cleared less efficiently leaving carcinogens in contact with tissue • More than likely a combination of factors results in the synergistic response seen

  25. A cancer of the pleura The abdominal cavity lining can also be affected Latency Period-twenty to forty years Can be caused by low exposure (not dose related) It spreads rapidly and is always fatal Mesothelioma

  26. Asbestos Warts Fibers embed in tissue; usually the hands Gloves should be worn when handling asbestos Colon, esophageal, stomach cancer May be asbestos related Fibers can work their way through soft tissue to adjacent structures and embed Fibers are swallowed and enter the digestive tract Poor hygiene, leaving food out in asbestos areas, carelessness-all can contribute to ingestion of asbestos Non-Respiratory Conditions Caused By Asbestos

  27. The detailed list of asbestos materials is available on the EH&S Web Site at http://www.csupomona.edu/~ehs/ftp/Asbestos.xls and in your training booklet. This list includes material that contains asbestos as well as material that does not. Most of the asbestos has been removed from Buildings 3. The information for Buildings 3, 13 and 15 has been updated. Building 35 updates are in progress. Locations of Asbestos

  28. Friable: Easily crumbled by hand pressure (e.g. sprayed fireproofing, acoustic insulation) Friable or damaged material can more easily release airborne fibers when disturbed Physical disturbance Basketballs Broom handles Renovation/Demolition Pipe work Condition of Asbestos

  29. Deterioration or Delamination Water leaks causing ceiling coating to pull away Steam Leaks Weather Recognizing damage Water stains Visibly disturbed lagging Suspicious debris Other suggestions Condition of Asbestos Continued

  30. EH&S provides program coordination Facilities Management has trained staff for small scale jobs Large scale jobs: Are done by approved registered contractors, while a separate contractor monitors work and takes air samples Asbestos incidents or emergencies Take precautions to avoid or reduce exposure Close doors to area or tape it off Contact EH&S at Ext 4697 and Facilities Customer Service at Ext 3030 Campus Management

  31. Discovery of new materials that may contain asbestos Arrange for sampling prior to disturbing Dos and Don’ts Avoid touching/disturbing asbestos materials Do not drill holes or hang objects from walls/ceilings containing asbestos. If you believe asbestos has been damaged contact Facilities Customer Service at extension 3030 Only persons authorized & trained are to perform work involving asbestos Campus Management Continued

  32. Regulation of Asbestos Exposure • Code of Federal Regulations • Title 29, Section 1910.1001 & 1926.1101 – Employee Safety • Title 40, Section 61 – Air Emissions • Title 40, Section 763 Subparts E, F & G – Training & Schools • California Health & Safety Code • Section 25915 – Annual Employee Notification • California Code of Regulations, Title 8 • Sections 349, 1549 & 5208 – Employee Safety • South Coast Air Quality Management District • Rule 1403 – Air Emissions and Employee Safety

  33. Regulation of Asbestos Exposure Continued • Exposure Levels • Action Level & Permissible Exposure Limit: 0.1 f/cc • Excursion Limit: 1.0 f/cc for 30 minutes • Clearance Level for Schools: 0.01 f/cc by TEM • Clearance Level for Cal Poly Pomona: 0.01 f/cc by PCM • Calif. No Significant Risk: 100 f/day (25705(b) Title 27 CCR

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