1. Unit 1 Lesson 3 Bell Work Key Words Risks and Hazards Control measures
What is meant by a risk?
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What is meant by a hazard?
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What is meant by a control measure?
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List control measures you can see these men using to reduce risk
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Unit 1
Lesson 3
Bell Work
Look at this picture and think about the dangers involved in working in a confined space like a trench.
Learning Objective
To know what is meant by Risks, hazards, and control measures. (Pass)
To identify risks, hazards and control measures involved in trench excavation. (Merit)
Challenge objective: To give a definition of the water table (Distinction.)

2. List 5 control measures you could put in place when digging a trench.
Go for 5!
Methods of support to the sides of the excavation (earthwork support) include, steel trench sheets, timbering, hydraulic trench supports, aluminium walling.
Match the names up to the pictures.
List 5 control measures you could put in place when digging a trench.
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Aluminium
walling
Hydraulic
trench
supports
Timbering
The Water Table
What is meant by the water table?
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Steel
trench
sheets
Learning Objective
To know what is meant by Risks, hazards, and control measures. (Pass)
To identify risks, hazards and control measures involved in trench excavation. (Merit)
Challenge objective: To give a definition of the water table (Distinction.)