Atmospheric Meters

Question 1

What 4 gasses does the 4 gas meter detect?

Answer 1

• Hydrogen Sulfide
• Oxygen
• LEL
• Carbon Monoxide

Question 2

What is a Confined Space?

Answer 2

• Limited openings for entry and exit
• Unfavorable/inadequate ventilation
• Not designed for continuous human occupancy

Question 3

What is entry?

Answer 3

..action by which a person passes through an opening into a space.

Question 4

What is hot work?

Answer 4

Any riveting, welding, burning, cutting, or other fire or spark producing operation.

Question 5

What is cold work?

Answer 5

Any work that does not classify as hot work.

Question 6

What is considered safe for workers?

Answer 6

• Oxygen content is 19.5 - 22%
• LEL is less than 10%
• Toxic materials are below the TLV or PEL
• Residues are not capable of producing a toxic atmosphere.

Question 7

What is Safe for Hot Work?

Answer 7

• Oxygen content is no greater than 22%
• No chemical producing residues
• Adjacent spaces share the same properties.