Confined space oral questions Flashcards
What does a confined space gas detector detect?
Tests the atmosphere Oxygen levels 20.9% (19.5% -23.5%) LEL (Lower Explosion Limit) (not to exceed 5%) CO2 Levels (Carbon Monoxide) ( H2S Levels Hydrogen Sulphide) (
What specific PPE would a person doing a confined space entry have?
(Among other items, Examiner wanted to hear about a rescue harness and line.)
Discuss how you would do/manage a recovery.
Risk assess
vent space
Where would you record the confined space entry?
(Examiner wanted to hear oil record book and Engine Room Log Book.)
You are to enter a fresh water tank. It is a large tank and it is side entry. Describe the whole process.
Risk assessment . what work are we doing . why do we need to entre . work permit . hot work . working at heights . Authority to work (ATW) . Drain the tank Confined space permit . ventilation . Gas testing . emergency plan
What are the dangers of entry into a fresh water tank?
Confined space
altered atmosphere
Drowning if water is still in the tank
Biological hazards
How could a fresh water tank have an explosive atmosphere?
(Examiner wanted to hear that explosive fumes can be drawn in through the tank breather.)
How would you do forced ventilation on this tank?
a
What are the relevant limits/levels to enter a confined space?
Oxygen 20.9% (19.5% - 23.5%)
LEL: 0 (less then 5%)
H2S: 0
CO2: 0
Explain the recovery process if a person inside a confined space if they were injured?
Activate the emergency plan, on the confined space permit
What are the confined space hazards of a diesel fuel tank?
Toxic atmosphere
Flammable
Reduced oxygen
Enter a diesel fuel tank on your vessel.
Risk assessment Confined space permit . ventilation . Gas testing .
You are having trouble sucking from the bilge holding tank and decide to do a tank inspection. Discuss how you would do/manage a confined space entry to the tank.
Risk assessment.
Confined space permit
Do I need to entre
Other ways to drain the tank
