Gas Detection
Toxicology
Exposure Limits
Personal Protective Equipment (PPE)
Hierarchy of Controls
100
This device is worn in the breathing zone and alerts the user of harmful levels of toxic gases
What is Personal Monitor or Personal Gas Detector
100
This substance exists as a flammable, colorless gas with a distinctive rotten egg odor.
What is Hydrogen Sulfide
100
This term (often used as an acronym) is a method of calculating a worker's daily exposure to a hazardous substance averaged over an 8-hr workday.
What is Time-Weighted-Average or TWA
100
This must be worn when handling corrosive chemicals or when performing activities that generate flying debris/projectiles.
What is a Face Shield
100
This control strategy which is at the top of the hierarchy of controls is the most effective way to control a hazard.
What is Elimination
200
H2S personal gas detectors are set to alarm at this concentration
What is 10 ppm
200
Exposures to this fibrous substance, often found in fireproofing or insulation, is associated with the development of several types of lung cancer
What is Asbestos
200
This term refers to the maximum concentration of a hazardous substance that a worker can be exposed to over a specific time period without developing adverse health effects
What is Occupational Exposure Limit or Exposure Limit
200
The suspension system in this must be replaced every 12 months or as recommended by the manufacturer.
What is a Hard Hat
200
Replacing chlorinated degreasers with a non-chlorinated version is an example of what type of control
What is Substitution
300
This sensor which measures in %, the concentration of flammable gases in air
What is an LEL Sensor
300
When inhaled this substance interferes with the ability of red blood cells to carry oxygen. Early symptoms often include headache, drowsiness, tiredness, and confusion.
What is Carbon Monoxide
300
____ is the 8-hr TWA for noise exposures
85 dBA
300
This must be worn when working within toe walls marked with yellow paint.
What are Chemical Goggles
300
This control is considered the least effective because rather than mitigating the hazard itself it relies on the end user to protect themselves against the hazard
What is PPE
400
This gas can often cause a false reading or "cross sensitivity" with CO sensors in gas detectors
What is Hydrogen
400
This substance which is highly corrosive and has a sharp penetrating odor is often used to catalyze a reaction known as alkylation
What is Sulfuric Acid
400
____ is the ACGIH occupational exposure limit (OEL) for carbon monoxide over an 8-hr TWA
25 ppm
400
This is the assigned protection factor or APF of a full-face air purifying respirator
What is 50
400
Worker rotation, which involves rotating several workers between jobs as a way of reducing exposure, is an example of what type of control
What is an Administrative Control
500
This testing method, which originates with using canaries in coal mines involves the use of a gas to check the functionality of safety equipment
What is "Bump Testing"
500
This substance, a by-product of catalytic and thermal cracking, targets the eyes, respiratory system, central nervous system, and reproductive system. 
What is 1,3-Butadiene
500
____ is the ACGIH occupational exposure limit (OEL) for lead over an 8-hr time-weighted average
0.05 mg/m3 or 50 ug/m3
500
This term refers to the ability and time it takes for a gas or liquid to move through the PPE or respirator cartridge
What is Breakthrough Time
500
This engineering control, often found in laboratories or in industrial settings, helps remove harmful contaminants at their source to protect workers' health
What is Local Exhaust Ventilation