WIOH Hub
What is one of the most common toxic gases found in waste water?
CO
H2S
Ozone
Ethylene
H2S
Is methane heavier or lighter than air?
LEL O2 H2S CO
What gas smells like rotten eggs and can desensitize your sense of smell at high concentrations?
Ammonia
Hydrogen sulfide
Chlorine
Methane
H2S
What Percentage of Air is made up of Nitrogen?
78%
What is the purpose of a bump test?
Verify accuracy of the instrument prior use
What is the minimum number of gases typically monitored during confined space entry in water operations?
1
2
3
4
4
Name 3 naturally occuring Noble Gases
Argon Krypton Helium Neon Xenon Radon
What is the most common sensor technology used in portable gas monitors for toxic gases?
Electrochemical
In wastewater plants, what is the most important first step before entering a confined space?
Take a selfie
Ventilate for 5 minutes
Test the air with a calibrated detector
Ask a supervisor if its safe
If your gas detector starts flashing lights and sounding, what do you do?
Evacuate and call maintenance
Does an Infra-Red Hydrocarbon sensor require oxygen to operate accurately?
No
Why is chlorine gas dangerous in water treatment facilities?
It causes fire
It reacts with O2
It is highly toxic and corrosive to the lungs
It smells clean and pleasant
It is highly toxic and corrosive to the lungs
Why is methane dangerous in a confined space?
It smells nice
It increases oxygen level
It is explosive and displaces oxygen
It settles on ground level
It is explosive and displaces O2
Where does a "Wheatstone Bridge" belong?
In a new tap beer
On a country road
In a catalytic sensor
In a catalytic sensor