Confined Space

Question 1

Under the Regulations a confined space has two defining features ,the presence of both of these features will render any place a confined space, as defined within the Regulations. What are they?

Answer 1

It is a place that is substantially (but not always entirely) enclosed​

There is a reasonably foreseeable risk of injury at work from a specified risk​

Question 2

Working in confined spaces, personnel can come into contact with a variety of chemicals/diseases/etc. What are the four routes of exposure?

Answer 2

Injection
Inhalation
Ingestion
Absorption

Question 3

A risk of explosion can arise from excess oxygen in the atmosphere true or false?

Answer 3

True

Question 4

A confined space supervisor should ensure that:

Answer 4

Appropriate control measures are implemented and maintained.
Hazards and risks are communicated to all those involved.
A suitable and sufficient risk assessment process is ongoing and being recorded.
They regularly update the incident commander of the tactical plan, progress and any findings of the risk assessment.

Question 5

Working in hot conditions can lead to a dangerous rise in core body temperature. This can be made worse by:​

Answer 5

Highly physical or strenuous work​.
Wearing personal protective equipment (PPE)​.
Working at a high work rate.

Question 6

All enclosed workplaces are deemed confined spaces true or false?

Answer 6

False

Question 7

Environments where asphyxiant gases may be present include:​

Answer 7

Where gases from leaks, failure or damage to machinery, pipes or cylinders have accumulated​ Correct
Where there is sewage, sludge or other deposits, especially if gases are released when it is disturbed​ Correct
Where naturally occurring biological processes produce toxic gases, especially in poorly-ventilated spaces​ Correct
Where contaminants have been processed or stored​ Correct
Where exhaust gases from engine driven equipment, machinery or vehicles have accumulated​

Question 8

What are the dangers of free flowing solids?

Answer 8

No space for the material to flow away.
Can submerge a person and prevent breathing.
May form combustible dust clouds.

Question 9

Which of the following are true for standard hand held radios in a confined space incident?

Answer 9

Not intrinsically safe
Barriers and distances may affect the signal