CONFINED SPACE FINAL EXAM
QUESTIONS WITH 100% CORRECT
ANSWERS.
What is flammable range?
The area between lowest and highest concentrations of a gas that would support ignition
What do the LFL and UFL help you determine?
They help you determine the flammable range
What is flashpoint?
The lowest temperature at which the vapor of a combustible liquid can be made to ignite
momentarily in air
How do the sides of dust particles affect the ability to ignite?
Smaller they are, easier to ignite
What percent limit of the LFL does OSHA use to accommodate variations and materials?
10% of LFL
What oxygen concentration poses a danger to human life?
Below 19.5%
What happens when the atmosphere is oxygen enriched?
At 23% it is flammable
What is the difference between a permit required and a non-permit required confined
space?
A permit required confined space has one or more the following characteristics: hazardous
atmosphere, contains material that has potential for engulfing an entrant, has internal
configuration such that an entrant could be trapped, contains any other serious safety or health
hazard
, Why should I rescue or consider all confined spaces to be permit required upon initial
arrival and until an evaluation is completed?
The difference is only intended for workers, not rescuers. rescuers must treat all as PRCS
What three things should be completed before you consider reclassifying a confined space
to non permit required?
Only after space classified by monitoring, assessing, reviewing problem
what is the intent of a confined space program and what does it tell you when you are
called to rescue someone in a confined space?
prevent accidents, Speed rescue, recognized confined space, differentiate permitted or
nonpermitted, take precautions
What three things make you the risk of becoming a statistic?
Failure to recognize hazards, failure to take precautions for hazards, failure to provide for
potential rescue
what is an entry permit?
Written or printed document that is provided by the employer to allow and control entry into a
permit space and that contains infer about the space itself and the hazards inside said space
If there is not an entry permit, what three things do you need to spend time determining?
What happened, how you can immediately assist the victim, steps to protect yourself
what should the safety concerns review include?
Location of space, reason for entry, atmospheric monitoring, PPE requirements, lockout/tag out
requirements, hazards
what is the basis for a confined space permit?
A checklist, insure requirements are reviewed prior to entry
What happens if the incorrect identification of a confined space is made?
QUESTIONS WITH 100% CORRECT
ANSWERS.
What is flammable range?
The area between lowest and highest concentrations of a gas that would support ignition
What do the LFL and UFL help you determine?
They help you determine the flammable range
What is flashpoint?
The lowest temperature at which the vapor of a combustible liquid can be made to ignite
momentarily in air
How do the sides of dust particles affect the ability to ignite?
Smaller they are, easier to ignite
What percent limit of the LFL does OSHA use to accommodate variations and materials?
10% of LFL
What oxygen concentration poses a danger to human life?
Below 19.5%
What happens when the atmosphere is oxygen enriched?
At 23% it is flammable
What is the difference between a permit required and a non-permit required confined
space?
A permit required confined space has one or more the following characteristics: hazardous
atmosphere, contains material that has potential for engulfing an entrant, has internal
configuration such that an entrant could be trapped, contains any other serious safety or health
hazard
, Why should I rescue or consider all confined spaces to be permit required upon initial
arrival and until an evaluation is completed?
The difference is only intended for workers, not rescuers. rescuers must treat all as PRCS
What three things should be completed before you consider reclassifying a confined space
to non permit required?
Only after space classified by monitoring, assessing, reviewing problem
what is the intent of a confined space program and what does it tell you when you are
called to rescue someone in a confined space?
prevent accidents, Speed rescue, recognized confined space, differentiate permitted or
nonpermitted, take precautions
What three things make you the risk of becoming a statistic?
Failure to recognize hazards, failure to take precautions for hazards, failure to provide for
potential rescue
what is an entry permit?
Written or printed document that is provided by the employer to allow and control entry into a
permit space and that contains infer about the space itself and the hazards inside said space
If there is not an entry permit, what three things do you need to spend time determining?
What happened, how you can immediately assist the victim, steps to protect yourself
what should the safety concerns review include?
Location of space, reason for entry, atmospheric monitoring, PPE requirements, lockout/tag out
requirements, hazards
what is the basis for a confined space permit?
A checklist, insure requirements are reviewed prior to entry
What happens if the incorrect identification of a confined space is made?
