Show:
air gaps
break tanks
hazard ratings
annual testing
health and safety at work
100
The unobstructed distance between the water level and flood level
What is an air gap ?
100
low hazard
What hazard rating does a break tank provide protection against?
100
high ,medium and low
What are the 3 hazard ratings
100
every 12 months
How often are testable devices are tested ?
100
non slip and water resistant
What sort of foot wear is required during testing
200
An air gap that is registered with the local water authority
What is a registered air gap
200
high hazard
What hazard rating does a registered break tank provide protection against ?
200
death
What is the possible outcome for consuming high hazard water
200
A qualified and licenced tester only
How is eligible to test backflow devices
200
bonding strap
When removing an inline device what piece of equipment is required required ?
300
The actual size of the water outlet let on a valve
What is the effective opening of a water valve outlet ?
300
A steam boiler
what is the only cross connection a break tank can protect against ?
300
endangered health
What is the possible outcome for consuming medium hazard water
300
The local water authority and the owner of the property.
Who are the test results lodged with
300
safety glasses
what eye protection is required during testing
400
Between the opening of the valve and the spill level of the appliance
Where is the air gap measured between
400
A registered break tank is tested annually
What is the difference between a registered break tank and break tank ?
400
no endangered health, only has a nuisance value such as being murky or has an odour.
What is the possible outcome for consuming low hazard water ?
400
Yes the water needs to be isolated
Does the water need to be isolated for the test to take place
400
de-pressurise the system
After you isolate the water supply for testing what should you do next ?
500
low hazard
What hazard rating does an air gap provide protection for ?
500
To stop insects and dust from entering the break tank
Why do break tanks require a firm fitting lid
500
Any condition or device that causes drinking water to have the potential to endanger health
What does AS 3500.1 cl 4.3 state
500
certified testing gauges
What sort of device will the tester need to measure the pressure differential during a backflow test
500
manufacturers specifications
What should be referred to before commencing any testing procedure ?