Unit 8: Plant Systems (Water System Protection Devices)

Question 1

Pressure Relief Valve

Answer 1

Used in hot water service to allow over pressured lines or tanks to release water and the associated pressure to escape.

Question 2

Back Syphonage

Answer 2

The opposite of Back pressure or Back flow in that a vacuum is created in the supply system sucking water or steam backwards.

Question 3

Flushometers/Flush Valves

Answer 3

Is a metering device that fill a toilet boil with a predetermined set amount of water and then closes the valve. Generally 6 litres

Question 4

Watter Harmmer Arrestors

Answer 4

Are devices that soften the impact of water hammer. They can use air to slow down the water.

Question 5

Effluents

Answer 5

are soil, waste and storm water. Can block drains or piping

Question 6

Horizontal Branch Piping

Answer 6

is used to convey wastes from fixtures (faucets and Toilets) to the waste stack and then to the waste drain.

Question 7

Pipe Traps

Answer 7

Used to prevent waste gases from flowing back up a drain by means of a water filled siphon.

Question 8

Sump

Answer 8

A sub pump that discharges sewage waste into the municipal sewers. Generally used since the building waste stack is lower then the municipal sewage lines.

Question 9

SAGD Sites

Answer 9

Steam-Assisted Gravity Drainage (SAGD) is an enhanced oil recovery technology for producing heavy crude oil and bitumen involving an advanced form of steam stimulation. Two horizontal wells are drilled into the oil reservoir, one a few meters above the other.

Question 10

Infrared Occupancy Sensors

Answer 10

Detect motion based on heat radiated by people

Question 11

Ultrasound Occupancy Sensors

Answer 11

Sense people based on sound vibration differences