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Hazardous Materials Technician .1
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Hazardous Materials Technician .1
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OHAZARDOUS MATERIALS TECHNICIAN.1 COMPLETE DETAILED CASE STUDY
b) Flammability -
CGI, Multi-Gas Monitor, PID, FID - - Used to determine the presence of flammable vapors of hydrocarbon
products
- They measure the flammable vapors as a percentage of the lower explosive limit
- Many combustible gas indicators are combination instruments, that also measure oxygen content and
several toxic substances
(c) Oxidation potential -
Oxygen Meters and Photoionization Detectors - - Measure of a substances ability to oxidize, its
propensity to yield oxygen
- The more readily a material gives up its oxygen molecule, the greater the hazard it presents.
(d) Oxygen deficiency -
Oxygen Meters and Photoionization Detectors - - Measures oxygen concentrations over a range of 0 to
25 percent oxygen in airbelow
- 19.5 percent is the minimum permissible percentage of oxygen as established by (OSHA)
- Below this level, the responder must have a supplied-air respirator
(e) Corrosively pH -
Litmus dye, pH paper, pH Meters - - Corrosively is measured by determining the pH of a material
, - Done using pH paper or pH meters. On pH paper the color changes, indicating the pH level
(f) Toxic levels (Toxicity) -
Photoionization Detectors, Flame ionization Detector, Infrared Spectrophotometers and Detector tubes -
- Some instruments measure specific chemicals, such as hydrogen sulfide, and some may measure more
than one chemical
- Detector tubes operate by drawing an air sample through a small glass tube
(g) Pathogenicity -
Biological Immunoassay Indicators, DNA Fluoroscopy, Polymerase Chain Reaction (PCR) and Hand Held
assays - - Pathogenicity is the virulence of a pathogen. Virulence refers to how ill an individual may
become
- The "GOLD STANDARD" continues to be a laboratory capable of identifying pathogens
- In the U.S. "gold standard" is a CDC certified Laboratory Response Network facility
A10. Identify the capabilities and limiting factors associated with the selection and use of the following
monitoring equipment, test strips, and reagents - (1) Biological immunoassay indicators (Hand held
assays)
(2) Colorimetric detector tubes
(3) pH Meters
(4) pH Paper/Strips
(5) Reagents
(6) Test strips
(7) Combustible gas indicator
(8) DNA fluoroscopy
(9) Electrochemical cells (oxygen meters)
(10) Electrochemical cells (Carbon monoxide meters)
(11) Flame ionization detector
(12) Gas chromatograph/mass spectrometer (GC/MS)
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