the importance of understanding the single check detector …bpaa.org.au/resources/peter wenning...
TRANSCRIPT
Peter Wenning
The importance of understanding the Single Check Detector Valve
Water (Estimation, Supply and Sewerage) Regulations 2014
Regulatory Impact Statement
Recommendations
Fire services metering Fire services backflow prevention
Extracts from RIS
‘South East Water estimates that 25 per cent of water provided through private fire services is misused.’
‘Water corporations also generally report that misuse is a noticeably higher problem during droughts’
Extracts from RIS
‘Lower Murray Water reported there were ‘quite a few’ cases of misuse of water through private fire services.’
‘it is estimated that misuse or inefficient water use through fire services amounts to around $3.5 million (present value) over the next 10 years.’
Water (Estimation, Supply and Sewerage) Regulations 2014
Commenced 1 July 2014
Extract from Water (Estimation, Supply and Sewerage)
Regulations 2014
‘A relevant water corporation may give a written notice to the owner of a serviced property requesting the owner to arrange for a plumber to install a backflow prevention device to the private water supply works or a private fire service.’
Extract from Water (Estimation, Supply and Sewerage)
Regulations 2014
‘A water corporation may, by notice in writing to the owner of a serviced property, request the owner to arrange for the testing by a plumber of a backflow prevention device installed on that serviced property.’
Extract from Water (Estimation, Supply and Sewerage)
Regulations 2014
‘If the results of the test carried out under sub-regulation (1) show that the backflow prevention device is not operating efficiently, the owner of the serviced property must arrange for the repair or replacement of the device.’
Many upstream and downstream valves are not Watermarked and/or resilient seated
By-pass valves not locked open Testing procedures in AS 2845.3 need refining Existing licensed backflow testers not trained,
and no system of CPD for plumbers South East Water experiencing numerous installation defects....................................
Problems
two different double check valves a single (testable) check valve
two different registered air gaps (including two different orifice sizes and inlet pressures) two different types of pressure type vacuum
breakers two different reduced pressure zone devices
Current Backflow Training Competency CPCPWT4022A released 7/2/2013
Chisholm Institute and South East Water develop training course
Victorian Building Authority not yet examining plumbing practitioners to new
training competency
Chisholm / SEW Course booklet
Risk Assessment to determine type of device required HIGH / MEDIUM / LOW Fire service shut down / procedures Components Operating requirements Maintenance Testing procedures Safety
Chisholm Test Rig
Chisholm Test Rig
Adapt Test procedure from AS 2845.3 to usable format
Video
Review
Every new fire service now requires a testable backflow device Fire services are essential services and any plumbing practitioners installing, altering or testing equipment must be adequately trained Chisholm Institute and South East Water have responded to training needs. Uptake by backflow testers has been successful Training is required for installing contractors
Further information
Chisholm Institute
Janelle Mason Call 5990 7243
Email: [email protected]
Wenning Technical Services Pty Ltd
Hydraulic Services Consultants
Peter Wenning Call (03) 8774 4024
Email: [email protected]