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Asbestos Awareness

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Title: Asbestos Awareness


1
Asbestos Awareness
  • Presented by QBE the Americas
  • Loss Control Services

2
Asbestos Awareness
3
What is Asbestos ?
  • Generic term for various fibrous mineral
    silicates
  • Fibers very resistant to heat and chemicals and
    do not conduct electricity
  • Formerly widely used in many industries

4
Uses of Asbestos
  • 3600 commercial products
  • Use began around 1900
  • Until 1940 use limited
  • From 1940 until 1970s used extensively
  • After 1980 phase out began
  • 1989- EPA phase out rule

5
Types of Asbestos
  • Chrysotile
  • Amosite
  • Crocidolite
  • Tremolite
  • Actinolite
  • Anthophylite

6
Chrysotile
  • Most common type of asbestos
  • Heat resistant
  • Sprayed on insulation
  • Fireproofing
  • Long flexible fibers easily spun into yarn

7
Amosite
  • Not as common as chrysotile
  • Pipe and boiler insulation
  • Fibers easily become airborne

8
Pipe Insulation
9
Crocidolite
  • Fibers shorter and more brittle
  • High tensile strength
  • Primarily used in cement products
  • Fibers hard to control

10
Common Uses
  • Insulating Products (1926-1971)
  • Surfacing Material (sprayed or troweled)
    (1935-1970)
  • Extrusion Panels (since 1930)
  • Transite Boards (unknown)

11
Ceiling Tiles
  • Armstrong Sanserra
  • Armstrong Santaglio
  • Armstrong Embossed Design

12
Roofing Materials
  • Shingles and clapboard (unknown)
  • Roofing felts (since 1910)
  • Roofing asphalt (unknown)
  • Roof putty (unknown)
  • Roof coatings (since 1900)

13
Floor Materials
  • Mastics (1945-1980)
  • Asphalt tile cement (since 1959)
  • Vinyl asbestos tile (1950-1980)
  • (9 x 9 tiles more likely to contain asbestos
    than 12 x 12 tiles)
  • Asphalt asbestos tile (1920-1980)

14
Paper Products
  • Corrugated (1910-1980)
  • Indented (since 1935)
  • Millboard (since 1925)

15
Other Products
  • Caulks and putties (1900-1973)
  • Adhesives (since 1945)
  • Joint compound (1945-1977)
  • Plaster/stucco (unknown)
  • Spackles (1930-1978)
  • Fireproofing (1935-1978)
  • Cements (since 1900)
  • Paints and coatings (1900-1978)

16
Spray-on Insulation
17
Spray-on Insulation
18
Asbestos in Buildings
  • About 20 of all buildings
  • About 5 with sprayed or trowled on ACM (asbestos
    containing materials)
  • About 16 with ACM on pipes or boilers
  • Very few with ACM ceiling tiles
  • About 42 with ACM containing floor tiles

19
Asbestos Related Diseases
  • Asbestosis
  • Lung cancer
  • Mesothelioma
  • Other Cancers

20
Asbestos Fiber In Lungs
21
Asbestosis
  • Lung scarring of air sacs (alveoli)
  • Since asbestos fibers strong, they do not break
    down
  • Asbestos fibers act as small needlesscarring
    lung tissue
  • Scarring reduces expansion or air sacs

22
Asbestosis
23
Asbestosis Symptoms
  • Latency 15 years
  • Heavy difficult breathing
  • Blue skin tone
  • Clubbing of toes and fingers
  • More susceptible to colds and pneumonia
  • Victims usually die from heart failure

24
Mesothelioma
  • Asbestos Cancer
  • Rare- 2000 cases per year in U.S.
  • Cancer of the pleura (chest cavity lining) or
    peritoneum (abdomen wall lining)
  • Small fibers enter cells causing uncontrolled
    growth (cancer)
  • Increased pressure on lungs, heart and other
    internal organs

25
Mesothelioma
26
Mesothelioma
  • Latency 30 years
  • Painful progressive disease
  • 6-12 month prognosis
  • Death by heart attack or stroke

27
Mesothelioma Symptoms
  • Cough, chest tightness and pains
  • Swelling of abdomen
  • Dramatic weight loss
  • Stomach pains

28
Lung Cancer
  • Non-smokers with asbestos exposure- 5 chance
  • Smoker 1-pack/day and asbestos exposure- 50
    chance
  • Smoker 2 pack/day and asbestos exposure- 95
    chance

29
Other Disease
  • Cancers of colon, stomach, large intestine,
    esophagus
  • Pleural Plaques- Scars on lining of chest walls
  • Pleural Effusion- fluid buildup in lungs

30
Pleural Plaques
31
Who is at Risk from Asbestos?
  • Insulators
  • Boiler Makers Repairers
  • Miners of Asbestos
  • Ship Yard Workers
  • Power-plant Workers
  • Brake Line Workers
  • Pipe Fitters

32
Exposure Limits
  • ACGIH-TLV as an 8 hr. time-weighted average- 0.1
    f/cc (fiber per cubic centimeter of air)
  • OSHA PEL as an 8 hr. time-weighted average- 0.1
    f/cc (1 f/cc for a 30 min. excursion period)

33
Exposure Factors
  • Concentration of fibers in air
  • Duration of exposure
  • Use of respirators and other protective measures

34
Release of Fibers
  • Friable- Loose, easily released into air. Example
    - spray applied materials
  • Non-friable- Fibers not easily released into air.
    Example - floor tiles

35
Friable Asbestos
  • Damaged ACM.
  • Fluffy, spray-applied fireproofing
  • Non-friable ACM can pose a hazard when sawed,
    sanded or during demolition

36
Friable Asbestos
  • In most cases, intact, undisturbed ACM does not
    pose a health hazard. Only when disturbed does a
    health hazard exists.
  • Removal of ACM may cause a problem where none
    existed
  • In-place management may be the best control method

37
EPA Regulations
  • AHERA- Asbestos Hazard Emergency Response Act
    -1986 Inspection and management of asbestos in
    schools
  • NESHAP- National Emission Standard for Hazardous
    Air Pollutants- 1973 regulates activities
    involving asbestos, i.e. manufacture, disposal,
    demolition, application, etc

38
Asbestos Abatement
39
OSHA
  • 1926.1101- Construction
  • 1910.1001- General Industry

40
29 CFR 1926.1101
  • Demolition or salvage where asbestos present
  • Removal or encapsulation of ACM
  • Construction, alteration, repair and maintenance
    where asbestos is present
  • Installation of materials containing asbestos
  • Cleanup, transportation, disposal and storage of
    ACM

41
State/Local Regulations
  • May have separate rules
  • Enforcement delegated from federal government
  • Training and certification required in each state
    or local area

42
Contractors
  • Only certified contractors meeting EPA, state or
    local requirements allowed to perform work
    involving ACM

43
Awareness
  • Buildings containing ACM should be abated before
    contractor begins work
  • If materials suspected of containing ACM are
    encountered, stop work and contact management
  • Wear respiratory protection in dusty situations
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