Confined Space

Question 0

What are the 3 types of atmospheric hazards?

Answer 0

• asphyxiant
• toxic
• explosive

Question 1

What are more dangerous? Atmospheric or physical hazards?

Answer 1

Atmospheric hazards which account for 65 % of deaths

Question 2

Which of the 3 cause most deaths?

Answer 2

Asphyxiants - 50 %

Question 3

Does the rescuer in a confined space have to remain in line of sight with the outside and their exit ?

Answer 3

Yes

Question 4

Member entering a confined space must be secured how?

Answer 4

Bowline on a bight and slippery hitch to a life saving rope

Question 5

What is the preferred high point anchor ? AL or TL?

Answer 5

TL can support 800 lbs , AL only 250 lbs

Note: ladders 6 bulletin TL has 1000 lbs capacity

Question 6

Can the AL or TL be used as a crane to lift a person ?

Answer 6

Never

Question 7

Can the LCC remain at the turntable during operation ?

Answer 7

No, he must be removed from turntable and the engine shut off to prevent accidental movement

Question 8

What is normal o2 concentration?

Answer 8

19.5 - 23.5 %

Question 9

Flammable range ?

Answer 9

Not over 10% LEL

Question 10

Toxicity?

Answer 10

Not over 35 PPM

Not over 10 PPM of hydrogen sulfide

Question 11

___% of the casualties started out as would be rescuers

Answer 11

60%