8 Vragen Gemiddeld

ECADEMY test

3 - Afvalwater in gebouwen

Deze cursustoets bevat 8 vragen. Opnieuw beantwoorden kan altijd..

Alle vragen moeten correct zijn beantwoord om te slagen voor de test en de cursus te voltooien..

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Vraag 7 van 8 Gemiddeld

Which method of backflow prevention has the following disadvantages: Highly sensitive to sand and solid objects in the water. In a backflow situation, it is not possible to use the sanitary facilities that are connected to this device. Storm water drains cannot be connected to this device. The device is not 100% safe and should be used only to protect secondary rooms with no vital technical installations.

Vraag 8 van 8 Gemiddeld

Which method of backflow prevention has the following advantages: Offers maximum backflow and flooding protection. Ideal for safeguarding electrical and other high value equipment. Offers unlimited use of sanitary facilities in case of backflow. Is easily serviced. Can be installed in a building’s storm water drains. Is not sensitive to sand and solid objects in the water.

Vraag 8 van 8 Gemiddeld

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Correct
Q: Why is the life cycle cost of the pressurised wastewater system low?
A: The initial cost of the lifting station is lower compared with a pit and there are no gravitation pipes outside the building
Correct
Q: What is grey wastewater?
A: Water, which is discharged from showers, sinks, washing machines, canteen kitchens etc.
Correct
Q: Who has the financial responsibility in the case of flooding in most countries?
A: The building owner and the building designers
Correct
Q: Which three factors have increased the risk of flooding and back flow?
A: A higher frequency of rainfalls, increased length of rainfalls and more paved areas today than earlier.
Correct
Q: What are the disadvantages of the traditional gravitation system?
A: Many gravitation pipes have to be installed outside the building and a great deal of excavation work is needed.
Correct
Q: Of the three anti-flooding systems, why is the lifting station the superior system?
A: It is pre-assembled and its location inside the building makes it easily accessible for service. Furthermore, it offers maximum backflow and flooding protection
Correct
Q: Which method of backflow prevention has the following disadvantages: Highly sensitive to sand and solid objects in the water. In a backflow situation, it is not possible to use the sanitary facilities that are connected to this device. Storm water drains cannot be connected to this device. The device is not 100% safe and should be used only to protect secondary rooms with no vital technical installations.
A: Anti-flooding valves
Correct
Q: Which method of backflow prevention has the following advantages: Offers maximum backflow and flooding protection. Ideal for safeguarding electrical and other high value equipment. Offers unlimited use of sanitary facilities in case of backflow. Is easily serviced. Can be installed in a building’s storm water drains. Is not sensitive to sand and solid objects in the water.
A: Lifting stations