214 ppt6 Fluid Categories Quiz

What is an example of a fluid in Category 1?

• Hot water in cylinder

• Mains water

• Primary water

• Urinal water

Answer explanation

Mains water is classified as a Category 1 fluid because it is potable and safe for human consumption, unlike the other options which may not meet safety standards.

Which fluid category represents a significant health risk and contains toxic substances?

• Category 1

• Category 2

• Category 4

• Category 5

Answer explanation

Category 4 represents a significant health risk as it contains toxic substances that can harm human health, any fluid with pesticides (including herbicides and insecticides), chemical or carcinogenic substances or environmental organisms of potential health significance.

What type of water is classified under Category 3?

• Wholesome water

• Water with slight health risk

• Water with severe health risk

• Water with significant health risk

Answer explanation

• Domestic water: Water in domestic heating systems, washing machines, dishwashers, hand basins, baths, and showers 

Which of the following is an example of a Category 5 fluid?

• Bath water

• Discharge from combi tap

• Washing machine water

• Urinal water

Answer explanation

• Sewage: Waste from drains, sinks, and toilets

• Animal waste: Waste from slaughterhouses, farms, and veterinary clinics

• Industrial waste: Chemicals and other contaminants from industrial processes

• Medical waste: Blood, bodily fluids, and other potentially infectious materials 

Some examples of places that may contain Category 5 fluids include:

• Laboratories

• Health care premises

• Industrial cisterns

• Mortuary and embalming equipment

• Slaughterhouse equipment

• Vegetable washing

What is the description of Category 2 fluids?

• Wholesome water supplied from the water undertaker

• Water that would be classed as Cat 1, except for colour, odour, appearance or temperature

• Fluids representing a slight health risk and unsuitable for drinking

• Fluids representing a severe health risk

Answer explanation

Category 2 fluids are those that would be classified as Category 1, but have issues with colour, odour, appearance, or temperature, indicating they are not wholesome despite being less hazardous than higher categories.

What is backflow in plumbing?

• Water flowing in the intended direction

• Water flowing in the opposite direction to that which it is designed to travel

• Water being heated to a high temperature

• Water being filtered for impurities

Answer explanation

Backflow in plumbing refers to water flowing in the opposite direction to that which it is designed to travel. This can lead to contamination of the water supply, making the correct choice essential for understanding plumbing safety.

What causes back siphonage in plumbing systems?

• High water pressure

• Negative pressure (sucking)

• Excessive water flow

• Water heating

Answer explanation

Back siphonage occurs due to negative pressure (sucking) in plumbing systems, which can draw contaminants into the clean water supply. This is typically caused by a sudden drop in water pressure.

What is the main purpose of a backflow prevention device in plumbing?

• To increase water pressure

• To prevent water from flowing backwards

• To filter impurities from water

• To regulate water temperature

Answer explanation

The main purpose of a backflow prevention device is to prevent water from flowing backwards, ensuring that contaminated water does not enter the clean water supply.

What can cause water to flow backwards in a plumbing system?

• High water temperature

• Sudden loss of pressure at the water main

• Excessive water usage

• Blocked pipes

Answer explanation

A sudden loss of pressure at the water main can create a vacuum effect, causing water to flow backwards in the plumbing system. This is a critical issue that can lead to contamination and other plumbing problems.

What causes water to flow back towards the water main in a backflow prevention system?

• Increased pressure in the main

• Gravity due to zero pressure in the main

• High temperature in the system

• Chemical reaction in the pipes

Answer explanation

Water flows back towards the water main due to gravity when there is zero pressure in the main. This lack of pressure creates a vacuum effect, allowing water to move back into the system.