©wrc plc 2014 - future water association©wrc plc 2014 • framework requires input data relating...
TRANSCRIPT
©WRc plc 2014
• Background to a focus on supply pipes• Current UKWIR study – leakage• Broadening perspective – holistic management• Conclusions
OverviewOverview
©WRc plc 2014
WRc Economics of supply pipe leakage
Issues regarding the potential
adoption of supply pipes: costs,
customer service and regulatory
impacts(simple cases)
Service pipe manual
Atkins report for Defra consultation
UKWIR study on impact of lead in
brass
UKWIR Economics of customer side
leakage
WRc CP537 – Supply pipe
management strategies
BackgroundBackground
©WRc plc 2014
• Framework requires input data relating to:– Interventions– Properties and metering– Leakage– Monitoring and location costs– Customer contacts– Intervention costs– Cost of water– Externalities– Shared services
Current situationCurrent situation
• Current situation outputs• Ability to model impact of
change to the current situation based on changing the SPL policy
• Ability to look at the impact of ‘specific issues’ – metering, waste notices, adoption and supply separation.
©WRc plc 2014
• SPL policy is defined within the work using two key variables:
SPL policy definitionSPL policy definition
©WRc plc 2014
• Run time impact (from identification to fix)
• Cost impact
• Unwanted customer contact impact (for households)
Three key relationshipsThree key relationships
Fix time ReinstatementTime
Awareness time
Leak break out Leak identified
©WRc plc 2014
• Waste notices
• Metering
• Supply separation
• Supply adoption
ScenariosScenarios
Leak run time
Operating cost
Customer contact
©WRc plc 2014
• SELL integration module:– Framework selection– Cost elements to consider– SR/LR assessment– Sensitivity of policy
Optimum situationOptimum situation
• Identify the least cost supply pipe leakage policy based on current and scenario information
• Visualise the variability in cost and leakage level that different SPL policies have
©WRc plc 2014
• Prevalence of different supply pipe arrangements – what are the management costs of each?
A step furtherA step further