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How could this equipment generate sparks or overheat when in use?


9. A range of portable electrical equipment and tools are used at the water trunk mains upgrade sites.


8. Explain what should be considered when assessing the risks associated with the installation of the slip liners in the trench.


7. Explain how the lifting work, involving the 360° excavator, can be done safely.


6. Comment on how driver fatigue is poorly managed for the regional maintenance teams


5. Explain how the risk of a fire occurring at the WTW could be reduced following the refurbishment.


4. Explain why an on-site emergency plan may be beneficial at the WTW.


3. Explain what may have contributed to deterioration of the electrical equipment and electrical supply system at the WTW site.


Task 3: Electrical equipment and electrical supply system deterioration


2. Explain how the delivery and storage arrangements of sodium hypochlorite could be improved at the WTW.


(b) What management arrangements should be in place to protect people on-site before and during this work?


(a) Explain the possible significant health and safety hazards associated with this work.


1. The refurbishment inside the WTW building extension involves replacement of existing pipework. All site operations will continue as normal during this work.


A large water treatment works (WTW) treats water from a river, storing it in reservoirs that supply drinking water to a nearby city.


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