Confined/Enclosed Spaces

1. A confined space has

• Limited means of entry and/or exit

• Is large enough for a worker to enter it, and

• Is not intended for regular/continuous occupancy.

• All of the above

Which of the following isn't an enclosed space?

• Chain locker

• void spaces

• decommisioned walk-in fridge

• operational walk-in freezer

How long should you ventilate an enclosed space before entering?

• 30 mins or until the air smells fresh

• 1 hour or until the air smells fresh

• 6 hours

• Until the air is tested and deemed safe to enter

If a colleague inside an enclosed space ceases to respond to communication you should...

• Raise the alarm immediately

• Don an EEBD and go to the rescue

• Don a BA Kit before going to rescue them

• Ensure a rescue team is present before going into rescue them

Oxygen enriched atmosphere is anything above ____%

• 22

• 25

• 30

• 19

Oxygen deficient atmosphere is anything below __ %

• 22

• 15

• 25

• 19.5

Before entering a confined space you should:

• Test the air quality

• Establish a means of communication with a supervisor

• Run a risk assessment and open a permit to work

• Inform the other relevant departments

A colleague is working in an enclosed space and starts complaining of a headache and dizzyness and shortness of breath. You should...

• Tell them to sit down and rest a minute.

• Blame it on their hangover from the night before

• Call a supervisor and pass them a bottle of water

• Get the colleague out of the space and retest the atmosphere

Who may work in an enclosed space?

• A dayworker

• Interior crewmember

• competent person

• authorizing officer

Who may open and close a permit to work?

• Dayworker

• Interior

• Competent person

• Authorizing officer