Module 3 Hazard Recognition and Evaluation

Questão	Responda
Name the four hazard groups	-Chemical -Physical -Biological -Egronomic
Physical states of chemicals	-Liquids -Solids -Gases -Vapours -Particulates
What kind of matter does the term "particulate" describe?	-Dust -Fibres -Nano particles
What is the legislated requirement when we are considering worker exposures me multiple chemical hazards?	When we have chemicals that share the same target organ. We assume the additive exposure and we have to add those together using the mixture rule. "Mixture factor equation"
What is direct monitoring?	Instant Results Quick and easy Limited in what they can monitor for
What is area, shift or personal monitoring?	Where we take a sample of the area being collected on a filter or some sort of medium and is sent to a lab for analysis.
What affects the degree of hazard of an agent?	Exposure Potential.
Why is dust more hazardous than gravel?	It is easier to inhale.
What makes a liquid that off-gases hazardous?	The vapor from the liquid is more likely to be inhaled.
Describe the information required to obtain an effective sample	Who, what, when, where, how Remember that you are trying to answer a question concisely.
What is grab sampling	Grab sampling is a one shot, whole-sample taken in a suma canister or a tedlar bag, that would be sent to a lab for analysis.
What is integrated samplng	Continuous sampling. a sample taken over a single shift if we can't sample for a single shift then we would take it over a few shifts then we would do the Time Waited Average calculation.
What is Biotransformation?	The process by which materials are chemically altered to make them easier to eliminate.
Define Aerosoles	Suspension of liquid or solid particles (mist, dust, fume, particulate) that are microscopic in size (0.5-10um) allowing them to remain airborne for an extended period of time.
Define Dust	Aerosol composed of particles typically caused by abrasion
Fumes Definition	Aerosol produced when material in its gaseous phase condenses to form a solid.
Gas	Characterized by its lack of defined shape or volume. (A part of the Gas, liquid, solid family)
Define Fibers	solid particles with an elongated aspect ratio (>3 to 1 and at lest 5 μm long) generated by handling, crushing, grinding, rapid impact, detonation etc. of fibrous materials such as asbestos, refractory ceramic fibers (RCF) and glass fibers.
Define Mist	Aerosol consisting of liquid droplets with diameters in the 40-50 micron size range.
Define Nanoparticle	Microscopic particle that is between 1-100um
Define Vapour	The term used to describe a substance that is in the gaseous phase but is a liquid or solid at room temperature.
Define Teratogens	Toxins that cause abnormal dvelopment or birth defects.
What quote is Paracelsus known for?	All substances are poisons. There is none which is not a poison. The right dose differentiates a poison and a remedy.
Define LD 50	is the INGESTED dose that will kill 50% of the population over a specified amount of time.
Define LC 50	is the INHALED dose that will kill 50% of the population over a specified amount of time.
What is room temperature described as?	20 degrees
Define Smoke	Mixtures of vapours, gases and particulate
How to calculate the weight of liquid when given the density and quantity	mL x Grams/cc
Define "Specific Gravity"	The weight of a liquid compared with an equal volume of water.

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Module 3 Hazard Recognition and Evaluation

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	Criado por Daneca Leatherdale quase 8 anos atrás