WorksheetsMTL1 H&S Learner Outcome 12
Total questions: 22
Worksheet time: 11mins
When might a plumber need to work in an excavation?
To build a well
To repair a pump
To connect water from the boundary stop valve
To find the water table
What is the usual depth a plumber might work in an excavation?
0.5m
0.75m to 1.35m
2m to 3m
Over 5m
What is the maximum depth a trench can be dug without support?
0.5m
1.2m
2m
3m
What is a risk when working in an excavation?
Sunburn
Collapse of trench sides
Loud noise
Dust on tools
What should be used for safe access into a trench?
Rope
Ladder
Scaffold
Ramp
What is “benching” in trench safety?
Painting the trench walls
Cutting the sides into steps
Digging deeper holes
Using metal sheets
Which trench support uses interlocking steel piles?
Trench box
Sheet piling shoring
Speed shores
Modular shoring
What is a trench box used for?
Storing tools
Measuring depth
Protecting workers from collapsing soil
Mixing cement
What is the safest method when trench walls cannot be sloped or benched?
Leave them unsupported
Use trench support systems
Dig faster
Use ladders only
What is a hazard when digging near underground services?
Noise pollution
Electrocution or explosion
Cold weather
Muddy boots
What should be placed around a trench to stop people falling in?
A rope
A 2m high barrier with toe boards
A warning light
A painted line
What helps prevent vehicles from getting too close to a trench?
Warning signs
Vehicle stops
Traffic cones
Painted lines
Why is propane gas not allowed in trenches?
It smells bad
It’s expensive
It gathers at the bottom and can cause explosions
It makes tools slippery
What should be used to warn people about a trench?
Flashing lights
Loud music
Warning signs
Flags
What is a confined space?
A large open area
A place with poor ventilation and risk of injury
A clean workspace
A room with windows
Which of these is a confined space a plumber might work in?
Garden shed
Kitchen
Kitchen
Under a floor
What is a danger when working in a confined space?
Too much sunlight
Inadequate lighting
Loud noises
Cold air
What must be done before working in a confined space?
Paint the walls
Do a risk assessment
Turn off the lights
Open all windows
What is the safest way to work in a confined space?
Avoid entry if possible
Work alone
Use loud tools
Skip safety checks
Which of the following is a potential danger in a confined space?
Fresh air
Flooding
Bright lighting
Open doors
Why is poor ventilation dangerous in confined spaces?
It causes noise
It reduces visibility
It can lead to lack of oxygen
It makes the space cold
What must be in place before starting work in a confined space?
A lunch break
Emergency arrangements
A toolbox
A heater
