Asbestos Abatement >> How To Remove Asbestos Paint From A Ceiling

Treat at least two different areas of each phase in this fashion. Choose representative areas of the sample. It may be useful to select particular areas or fibers for analysis. This is useful to identify asbestos in severely in homogeneous How To Remove Asbestos Paint From A Ceiling samples. 

When it is  determined that amphiboles may be present, repeat the above process using the appropriate high-dispersion oils until an How To Remove Asbestos Paint From A Ceiling identification is made or all six asbestos minerals have been ruled out. Note that percent determination   must be done in the index medium 1.550 because amphiboles tend to disappear in their matching mediums. 

Analytical procedure Note: This method presumes some knowledge of  mineralogy and optical petrography. The analysis consists of three parts: The determination of whether there is asbestos present, what type How To Remove Asbestos Paint From A Ceiling is present and the determination of how much is present. The general flow of the analysis is: (1) Gross examination. (2) 

Examination under polarized light on the stereo microscope. (3) Examination by phase-polar illumination on the compound phase microscope. (4) Determination of How To Remove Asbestos Paint From A Ceiling species by dispersion stain. Examination by Becke line analysis may also be used; however, this is usually more cumbersome for asbestos determination. 

Difficult samples may need to be analyzed by SEM or TEM, or the results from those techniques combined with light microscopy for a definitive How To Remove Asbestos Paint From A Ceiling identification. Identification of a particle as asbestos requires that it be asbestiform. Description of particles should follow the suggestion of Campbell. 

For the purpose of regulation, the mineral must be one of the six minerals covered and must be in the asbestos growth habit. Large specimen How To Remove Asbestos Paint From A Ceiling samples of asbestos generally have the gross appearance of wood. Fibers are easily parted from it. Asbestos fibers are very long compared with their widths. 

The fibers have a very high tensile strength as demonstrated by bending without breaking. Asbestos fibers exist in bundles that are easily parted, show longitudinal fine How To Remove Asbestos Paint From A Ceiling structure and may be tufted at the ends showing "bundle of sticks" morphology. In the microscope some of these properties may not be observable. 

Amphiboles do not always show striations along their length even when they are asbestos. Neither will they always show tufting. They generally do not show a curved nature except for very long fibers. Asbestos and asbestiform minerals are usually characterized in groups by extremely high How To Remove Asbestos Paint From A Ceiling aspect ratios (greater than 100:1). 

While aspect ratio analysis is useful for characterizing populations of fibers, it cannot be used to identify individual fibers of intermediate to short aspect ratio. Observation of many fibers is often necessary to determine whether a How To Remove Asbestos Paint From A Ceiling sample consists of "cleavage fragments" or of asbestos fibers. 

Most cleavage fragments of the asbestos minerals are easily distinguishable from true asbestos fibers. This is because true cleavage fragments usually have larger diameters than 1 um. Internal How To Remove Asbestos Paint From A Ceiling structure of particles larger than this usually shows them to have no internal fibrillar structure. 

In addition, cleavage fragments of the monoclinic amphiboles show inclined extinction under crossed polars with no compensator. Asbestos fibers usually show extinction at zero degrees or ambiguous extinction if any at all. Morphologically, the larger How To Remove Asbestos Paint From A Ceiling cleavage fragments are obvious by their blunt or stepped ends showing prismatic habit. 

Also, they tend to be acicular rather than filiform. Where the particles are less than 1 um in diameter and have an aspect ratio greater than or equal to 3:1, it is recommended that the How To Remove Asbestos Paint From A Ceiling sample be analyzed by SEM or TEM if there is any question whether the fibers are cleavage fragments or asbestiform particles. 

Care must be taken when analyzing by electron microscopy because the interferences are different from those in light microscopy and may structurally be very similar to asbestos. The classic How To Remove Asbestos Paint From A Ceiling interference is between anthophyllite and biopyribole or intermediate fiber. 

Use the same morphological clues for electron microscopy as are used for light microscopy, e.g. fibril splitting, internal longitudinal striation, fraying, curvature, etc. (1) Gross examination: Examine the How To Remove Asbestos Paint From A Ceiling sample, preferably in the glass vial. Determine the presence of any obvious fibrous component. 

Estimate a percentage based on previous experience and current observation. Determine whether any pre-preparation is necessary. Determine the number of phases present. This How To Remove Asbestos Paint From A Ceiling step may be carried out or augmented by observation at 6 to 40 x under a stereo microscope. (2) After performing any necessary pre-preparation, prepare slides of each phase as described above. 

Two preparations of the same phase in the same index medium can be made side-by-side on the same glass for How To Remove Asbestos Paint From A Ceiling convenience. Examine with the polarizing stereo microscope. Estimate the percentage of asbestos based on the amount of birefringent fiber present. (3) Examine the slides on the phase-polar microscopes at magnifications of 160 and 400 x.

Note the morphology of the fibers. Long, thin, very straight fibers with little curvature are indicative of fibers from the amphibole family. Curved, wavy fibers are usually indicative of chrysotile. Estimate the percentage of asbestos on the phase-polar microscope under How To Remove Asbestos Paint From A Ceiling conditions of crossed polars and a gypsum plate. 

Fibers smaller than 1.0 um in thickness must be identified by inference to the presence of larger, identifiable fibers and morphology. If no larger fibers are visible, electron microscopy should be performed. At this point, only a How To Remove Asbestos Paint From A Ceiling tentative identification can be made. Full identification must be made with dispersion microscopy. 

Details of the tests are included in the appendices. (4) Once fibers have been determined to be present, they must be identified. Adjust the microscope for dispersion mode and observe the fibers. The microscope has a rotating stage, one polarizing element, and a How To Remove Asbestos Paint From A Ceiling system for generating dark-field dispersion microscopy (see Section 4.6. of this appendix). 

Align a fiber with its length parallel to the polarizer and note the color of the Becke lines. Rotate the stage to bring the fiber length perpendicular to the polarizer and note the color. Repeat this How To Remove Asbestos Paint From A Ceiling process for every fiber or fiber bundle examined. The colors must be consistent with the colors generated by standard asbestos reference materials for a positive identification. 

In n = 1.550, amphiboles will generally show a yellow to straw-yellow color indicating that the fiber indices of refraction are higher than the liquid. If long, thin fibers are noted and the colors are yellow, prepare further How To Remove Asbestos Paint From A Ceiling slides as above in the suggested matching liquids listed below:

Basement Drying

When a Fire Damage Basement Drying strikes, many lives could be suddenly turned upside down, many times the hardest part is knowing exactly where to start and who you should contact. The Federal Emergency Management Agency’s (FEMA) along with the United States Fire Administration (USFA) has collected the foll  read more..

How To Clean Up From A Sewer Backup

Sanitary sewer overflows can be caused by too much precipitation infiltrating leaky sewer pipes, inadequate system capacity to handle newly-developed residential or commercial areas, blocked or broken pipes, or improperly designed and installed sewer systems. Sewage backups not only present unpleasa  read more..

Smoke Damage Restoration For Electronics

In Figure 17, the dashed vertical line represents the typical DC leakage current limit for a 150µF, 6.3V device while the solid vertical line represents the limit for a tantalum polymer device. It's clear that one of these capacitors would not have met the MnO2 limit and Electronic Restoration Smoke Damage Restoration For Electronics several ot  read more..

How To Remove Lead Paint From Wood

There are several ways to remove lead-based paints: Wire brushing or wet hand scraping with the aid of a non-flammable solvent or abrasive compound. Liquid paint removers can be used on small areas, such as windowsills, doors and woodwork. Read and follow the manufacturer's instructions and warning   read more..

Certified Asbestos Abatement

Asbestos Abatement Certified Asbestos Abatement has been a very lucrative career for many people offering a steady form of income in a lot of different areas of employment. Asbestos is a natural mineral that is very fibrous, it's an excellent insulating material, but has been found to cause lung cancer and also mesothelioma if it has   read more..

How To Choose A Mold Testing Company

Mold remediation, water removal Standing water is a breeding ground for a wide range of micro-organisms and insects, such as mosquitoes. Mosquitoes can spread diseases like West Nile Virus. Micro-organisms, including bacteria and mold, can become airborne and be inhaled. Where floodwater is highly c  read more..

Can A Private Homeowner Dispose Of Asbestos Floor

Material Properties Materials are either amorphous or crystalline. The difference between these two descriptions depends on the positions of the atoms in them. The atoms in amorphous materials are randomly arranged with no long range order Asbestos Abatement Can A Private Homeowner Dispose Of Asbestos Floor. An example of an amorphous material is glass.  read more..

How Long Should A Dehumidifier Run Per Day

Unit(s) shall be capable and designed for year-round, 24-hours-a-day operation; and requiring only connections of ducts, utilities, and remote sensors, controllers, Dehumidification How Long Should A Dehumidifier Run Per Day and monitors. 3. Unit(s) shall include active regeneration system for control of dehumidification processes.    read more..

How To Remove Smoke Odor From A Kitchen Fire

Comparison of Fire Performance and Corrosion Work by Chapin et al. [25] evaluated the ability of a variety of standard test methods to evaluate the impact of smoke from local area network (LAN) cables on electrical equipment. Their concern was that the specialized and controlled nature of these test  read more..

How To Do Radon Testing

REGIONAL RADON TRAINING CENTERS (RRTCS)The EPA supports four Regional Radon Training Centers. Each RRTC is either an individual university or a consortium of universities that offer a variety of radon-related training courses. The EPA strongly encourages participants to be trained in all aspects of   read more..