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Asbestos Methods & Materials. Over View . Regulation’s Equipment How to handle ACM’s Safety Practices Environmental . What is Asbestos? Common Sources Why look for it? What to look for? Community Concerns. What is Asbestos?. 6 Naturally occurring fibrous minerals

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Asbestos Methods & Materials

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Presentation Transcript
over view
Over View
  • Regulation’s
  • Equipment
  • How to handle ACM’s
  • Safety Practices
  • Environmental
  • What is Asbestos?
  • Common Sources
  • Why look for it?
  • What to look for?
  • Community Concerns
what is asbestos
What is Asbestos?
  • 6 Naturally occurring fibrous minerals
  • Broken down into 2 groups:
    • Amphibole-straight rod like fibers
    • Serpentine-easier to wet
asbestos types
Asbestos Types
  • Friable
    • Crumbled with hand pressure
    • More likely to become airborne
    • Regulated by all agencies
  • Non-friable
    • Typically bound within a matrix
    • Regulated by OSHA, MPCA
definition of asbestos containing material acm
Definition of Asbestos Containing Material (ACM)
  • Greater than 1% by weight of Asbestos
  • Only Detected using
    • Polarized Light Microscopy or,
    • Electron Microscopy
properties of asbestos
Properties of Asbestos
  • Tensile strength of steel
  • Heat resistant
  • Water resistant
  • Chemical resistant
  • Non-conductive of electrical current
  • Aerodynamic
  • Breaks down to fibers smaller than bacteria
    • 1 cu. in of Asbestos = 15 Million Miles
common building use
Common Building Use
  • Heating/Cooling System Insulation
  • Electrical System Insulation
  • Structural Fireproofing
  • Sound Attenuation
  • Flooring and Mastics
  • Roofing Materials
  • Gaskets
  • Cooling Towers
  • Waste piping

Non- Suspect Materials








common sources of asbestos exposure
Common Sources of Asbestos Exposure:
  • The construction industry
  • Buildings built before 1985
  • Building demolition
  • Renovation activities
  • Some automotive parts

(Brake pads, clutches)

  • Pipe & furnace insulation
  • Vermiculite Insulation
  • Among many others
why look for it
Why look for it?
  • Exposure to asbestos may increase the risk of asbestosis, other nonmalignant lung disorders, lung cancer, mesothelioma, and other cancers.
  • OSHA established regulations dealing with asbestos exposure on the job, specifically in construction work.
what to look for
What to look for…
  • Because asbestos fibers are microscopic (about 1,000 times smaller than the diameter of a human hair), the presence or absence of asbestos fibers cannot be determined by sight alone
what to look for1
What to look for…
  • If you don't know whether construction materials contain asbestos, assume they do until laboratory testing proves otherwise
  • Especially if the materials are crumbling, peeling, cracking, water-stained or blistering.
what to look for2
What to look for…
  • Sprayed-on or troweled-on

surfacing materials (such as plaster,

popcorn ceilings, etc.)

  • Insulation around pipes, boilers,

ducts or hot water tanks

  • Attic and wall insulation
  • Floor tiles (asphalt, rubber etc.) &

the backing materials used to install

tiles (Mastic)

what to look for cont
What to look for Cont…
  • Window Caulking and Glazing
  • Ductwork
  • There are many applications

in which ACM’s were used

  • If you are unsure about a material

ASKa supervisor.

  • Supervisor should consult a Testing

Company to verify if it is an ACM.

a history of acm s
A History of ACM’s
  • A.C.M.’s=

Asbestos Containing Materials

  • Was highly valued for its nearly

indestructible nature, fireproofing qualities, and

lightweight fibrous nature

  • From mid 1800’s to the mid 1980s, asbestos was used in over 3000 building products
a history of acm s1
A history of ACM’s
  • Usage increased in buildings and other items through early to mid 1900’s
a history of acm s2
A History of ACM’s
  • These products become dangerous when they are damaged, decayed, crumbled, or likely to let asbestos fibers escape into the air where they can be inhaled.
  • Some of these products have

been banned by federal law

  • Some products replaced by other


  • Some remain legally produced


regulation of asbestos
Regulation of Asbestos
  • OSHA
    • Protects Workers (0.1 f/cc 8 hr TWA)
    • Defines Abatement Methods
  • EPA
    • NESHAPS (no visible emissions)
      • National Emissions Standard for Hazardous Air Pollutants
    • AHERA (Schools)
    • Inspect prior to renovation/demolition
    • Transport and Disposal of ACM
  • Department of Health
    • Licensing
    • Establishes Abatement Methods
    • Regulates Friable asbestos abatement over 160 sf 260 ln
    • Indoor Air Quality standards (0.01 f/cc)
communication of hazards
Communication of Hazards
  • Building/Facility owner responsibility to determine:
    • 1) Presence
    • 2)Location
    • 3)Quantity
  • Of all ACM’s or PACM’s’ prior to any work being done.
  • Notification shall either be in writing or a personal communication between owner and the person/organization to be notified
who to call
Who to call?
  • Building owner
  • Facility owner
  • Owners Rep
  • Why?
  • Their responsibility to determine:
    • Presence
    • Location
    • Quantity
  • Physical Asbestos Report/Investigation/Survey
  • Before any work is done on the building
  • Ask. to see the report if there is a concern.
  • Violating Asbestos related rules is a pricey mistake!
how we handle acm s
How We Handle ACM’s…
  • Observe and Maintain
  • Encapsulate (bridging and penetrating)
  • Enclose
  • Repair (cast wrap)
  • Remove / Abate
    • Keep Non-Friable material

non friable

    • Wet, contain friable material
abatement methods
Abatement Methods
  • Glove Bag/Wrap and Cut
    • <25 ln ft/room
    • <10 sq ft/room
  • Seal tight enclosure
  • Wet methods
  • Vacuum collapsed
  • Adjacent air monitoring
full enclosure construction
Full Enclosure Construction
  • Critical barriers over all openings to Work Area and porous surfaces
  • (2) Layers of poly over HVAC System
  • 5-Stage Decontamination Chamber: Clean Room, Air Lock, Shower, Air Lock, Dirty Room
  • (2) Layers of Floor Poly
  • (1) Layer of Wall Poly
  • Asbestos Hazard Warning Signs at approaches
  • HEPA Filtered Negative Air Machines
    • 4 Air Changes per Hour
    • Outside exhaust preferred
air monitoring for asbestos abatement
Air Monitoring for Asbestos Abatement
  • Phase Contrast Microscopy
    • Counts all fibers
  • Worker exposure <0.1 f/cc
    • Engineering controls
      • Wet methods
      • Air movement
    • Respiratory protection
  • Adjacent Air Monitoring during abatement
    • <0.01 f/cc at all time
  • Visual Inspection after abatement
  • Aggressive Final Air Clearance
    • Box fans, leaf blower
    • <0.01 f/cc PCM
  • Clear labeled bags
    • Double bagged
    • Goose necked
    • Sealed
  • Labeled drums
  • Must be wet
  • Certified Landfill
    • Buried within 24 hrs
  • Waste Manifest
    • Generator, Contractor, Hauler
questions comments

Feel free to contact us!

An Environmental Contractor

Call us at: 808-635-5861

NCM Group Hawaii: 808-680-0020