How Much is Too Much?
The Permissible Exposure Limit or PEL for H2S
10PPM
This system is depressed when H2S enters the body.
Nervous
10,000 PPM =
1%
H2S smells like this "delicacy" at low concentrations.
Rotten Eggs
_______ signs are critical to preventing an H2S incident.
Warning
The Short Term Exposure Limit or STEL for H2S
15PPM
H2S reduces this element when it enters the blood the stream.
Oxygen
When H2S is burned it creates?
Sulphuric Acid
Detection of H2S solely by _____ is highly dangerous
smell
Name one type of visual notification that might indicate that H2S may be present.
Signage, wind sock
IDLH stands for...
Immediately Dangerous to Life and Health
This is the primary entry route for H2S and poses the greatest risk of injury or death.
At this concentration fluid buildup in the lungs will occur.
100ppm
Any surface at this temperature can ignite H2S.
500F
A type of monitor that can be worn and will alert workers to the presence of H2S.
Personal gas, 4-gas,
The IDLH for H2S
100ppm
H2S travels through the body via the _____ ______.
blood stream
Respiratory difficulty, depression, and irritation as well as Pulmonary Edema can occur after exposure to H2S above ____PPM
100
H2S is soluble in both _____ and ______ ____________.
Water and Liquid Hydrocarbons
Never attempt a rescue unless you meet these 2 criteria.
Wearing the appropriate respiratory protection AND properly trained
NIOSH determines that the IDLH of a gas as is when a worker cannot...
self-rescue from a hazardous atmosphere within 30 minutes
Name the 4 ways H2S can enter the body
1. Inhalation, Injection, Absorbtion, and
Ingestion
When H2S is dissolved in water it forms ______________
Hydro-Sulfuric Acid
When the sense of smell is paralyzed at higher concentrations.
Olfactory Fatigue
These are the only 2 types of respiratory protection allowed to enter areas where H2S concentrations are above 100ppm
SCBA - Self Contained Breathing Apparatus
SAR - Supplied Air Respirators