WORK SITE HAZARDS by Gregg Golson

1 of 50

Slide Notes

WORK SITE HAZARDS

Published on Jan 17, 2017

No Description

View Outline

PRESENTATION OUTLINE

WORK SITE HAZARDS

ASBESTOS AND LEAD PAINT

Photo by Saad.Akhtar

ASBESTOS

Photo by Asbestorama

WHAT IS ASBESTOS?

Asbestos : Includes chrysotile, amosite, crocidolite, tremolite asbestos, anthophyllite, asbestos, actinolite asbestos, and any of these minerals that have been chemically treated and/or altered

Photo by xJason.Rogersx

WHAT IS AN A.S.M.?

ASBESTOS CONTAINING MATERIAL

Asbestos-containing material (ACM) : Any material that contains more than 1% asbestos

Photo by Tony in WA

REGULATED AREA

WHAT IS IT?

The employer shall establish regulated areas wherever airborne concentrations of asbestos and/or PACM (Presumed Asbestos Containing Material) are in excess of the TWA (Time Weighted Average) and/or excursion limits.

Photo by Kearnj

RESPIRATOR

MUST BE SUPPLIED AND WORN IN REGULATED AREAS

Photo by chad.latta

NO EATING

DRINKING OR SMOKING IN REGULATED AREAS

The employer shall ensure that employees do not eat, drink, smoke, chew tobacco or gum, or apply cosmetics in the regulated areas.

Photo by Duke Geren

PROTECTIVE CLOTHING

The employer shall provide the employee with appropriate protective work clothing and equipment at no cost to the employee.
This includes equipment/clothing not limited to: Coveralls, gloves, head covering, foot coverings, face shields, and vented goggles.

Photo by USDAgov

HOW SMALL ARE THE FIBERS?

Once disturbed, asbestos breaks into minute fibers we are able to easily inhale

Photo by James St. John

10.

YOU CAN'T:

SEE IT?
FEEL IT?
TASTE IT?
SMELL IT?

Photo by Thomas Tolkien

11.

HARMFUL IF INHALED

Once inhaled, over a lengthy period it can cause lung cancer or mesothelioma (tumor around the membrane of the lung). May take up to 10 years to show signs or symptoms after exposure.

Photo by Thomas Rousing Photography

12.

EARLY USES:

CIGARETTE FILTERS
BRAKE PADS
FIRE PORTECTION
PIPES & INSULATION

Photo by Dave.Hull

13.

MODERN ASBESTOS MATERIALS

Photo by sickmouthy

14.

PIPES & INSULATION

Photo by AMagill

15.

FLOORS & MASTIC

Photo by cdmwebs

16.

CONTROL OF ASBESTOS

ENCAPSULATION
ENCLOSURE
REPAIR
REMOVAL
OPERATIONS & MAINTENCE

Photo by aaronlk

22.

ENCAPSULATION

Encapsulation is the application of a thick,
paint-like material on asbestos containing
material. The encapsulant may be applied with
a low pressure sprayer. The encapsulant then
hardens and prevents the release of fibers into
the air.
There are two types of encapsulants: bridging
and penetrating. Bridging encapsulants form
a protective coating over the asbestos.
Penetrating encapsulants soak into the

Photo by KimMcKelvey

23.

ENCLOSURE

An enclosure is an airtight barrier around the asbestos. The enclosure can be built out of wood, metal, or sheetrock. All seams must be sealed completely and be air-tight. If the structure is not air-tight, it is not an enclosure.
Another type of enclosure is called encasement. Encasement is a new covering built over the asbestos material. For soil, pouring a layer of concrete over the asbestos contaminated dirt would be an encasement. For interior encasements, spraying a closed cell foam
over the asbestos would seal the asbestos in place.

Photo by Forest Service - Northern Region

24.

REPAIR

Repair jobs are usually small in nature. They involve limited
amounts of asbestos. Repairs are usually made to a small section of pipe or a small area of wall or ceiling. A patch is placed over a damaged area to control fiber release. The patch is then painted with a mastic to seal the patch.

Photo by MacUK

25.

REMOVAL

Removal is the most common way of controlling asbestos. It is a permanent solution. The asbestos containing materials are removed and replaced with a non-asbestos containing material with similar properties.
Removal consists of taking the asbestos off of whatever it is on. The waste is bagged and sent to a special landfill. A removal job not only deals with the asbestos that you can see, but also with the asbestos that you cannot see. During removal, large amounts of asbestos fibers are released into the air. They are spread over the entire containment area. The entire area must be cleaned for a removal
job to be successful.

Photo by spacebahr

26.

OPERATIONS/MAINTENANCE

CONTROL FOR REMAINING ASBESTOS

Operations and Maintenance is a control program for managing asbestos that remains in a building. The O&M program is basically a paper trail that lists how asbestos is dealt with.

Photo by avlxyz

27.

WHAT IS A GLOVEBAG?

Glovebags usually are considered maintenance jobs. A small amount of asbestos insulation is removed from a pipe or valve sothat the pipe or valve can be repaired or replaced. The area is then re-insulated with a non-asbestos insulation. A glovebag is considered a mini-enclosure. All of the work is contained inside the bag. Glovebags can only be used to remove 3' or less of material. For removing asbestos from a larger area, a full
containment must be built.

28.

CLASS 1 ASBESTOS ABATEMENT

REMOVAL
ENCAPSULATION
ENCLOSURE

Removal, encapsulation and enclosures are considered Class 1 work. All of these methods will release fibers into the air. Removal releases large amounts of fibers into the air. Precautions must be taken to lessen fiber release and to contain the fibers to the work area.
Many times, damaged asbestos will need to be removed before
encapsulation or to attach an enclosure. Tools, such as saws, nail guns, or drills will disturb the fibers and put them into the air. For all three methods, a containment must be built. Workers must wear suits and respirators. A decontamination area must be built at the containment. Any waste generated is considered asbestos waste and must be disposed of properly.

29.

LEAD PAINT

Photo by thirdstreetphoto

30.

WHY IS LEAD ADDED?

Different lead compounds are added to the paint as a pigment, creating a specific color depending on whichever compound is used. ... The heavy metal additive also decreases the amount of time that the paint takes to dry, makes the paint more durable, and causes the paint to be more moisture resistant.

Photo by UnitedSoybeanBoard

31.

WASN'T LEAD PAINT BANNED

1978
Due in great part to studies carried out by Philip J. Landrigan, paint containing more than 0.05% (by weight of dried product) lead was banned for residential use in the United States in 1978 by the U.S. Consumer Product Safety Commission (16 Code of Federal Regulations CFR 1303).

Photo by uvw916a

32.