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Question 1 of 4
What are the large blue items in the image?CorrectIncorrect
Question 2 of 4
The picture below shows a chemical monitoring system, linked to chemical dosing pumps. Why is is important that the power supply to the chemical dosing system is switched off any time the circulation pumps are off?CorrectIncorrect
Question 3 of 4
Drag and drop the hazards opposite the appropriate descriptions.
- Entrapment hazard
- Entanglement hazard
If the outlets are blocked, whatever is causing the blockage will be exposed to the suction force of the circulation pumping system. The circulation pumps will be sucking on to whatever is causing the blockage, causing a vacuum. At this point, it will be very difficult to remove the blockage without turning off the circulation pump(s). If the blockage is in the form of a person, then tragic consequences can occur, including drowning, disembowelment and transanal evisceration, which is where internal organs are forcefully drawn out through the anus.
Involves hair being drawn into the outlet and then entwining on the other side of the outlet due to the circular motion of the water is it goes through the outlet. It may be impossible to free the hair from the outlet, even if the circulation pumps are turned off. People using spa pools are at an increased risk due to the fact that they will be in close proximity to an outlet no matter where they are situated within the spa pool. For this reason, people using spa pools should be advised to tie long hair back and refrain from submerging their head under the water. Staff responsible for supervising the spa pool should be trained sufficiently so that they are aware of the hazards associated with outlets.
Question 4 of 4
If a pool has a volume of 300 cubic metres and a flow rate of 150 cubic metres per hour, how many hours would the turnover be?CorrectIncorrect