Introduction of Asset Management, Belgrade’s expirience
Vladimir Taušanović Ms Sc Civ.Eng
Belgrade Waterworks & Sewerage
Danube river basin
Belgrade Waterworks FACTS
CUSTOMERS • 1.5 MIL consumers PRODUCTION • 100 wells and pumping units • 5 water treatment plants DISTRIBUTION • 3.500 km distribution network length • 200.000 customer units • 22.000 valves… etc.
WATER BALANCE • 200 MIL m3 annual water intake • 32% Unaccounted for Water (UfW) ENERGY CONSUMPTION • 168 MIL kWh/YEAR (0.88 kWh/m3) ENVIRONMENT • 0.15 MIL t CO2 carbon footprint
Belgrade Waterworks FACTS (Contnd)
BWS STATUS QUO at the beginning of new millennium
Aging & Deterioration of infrastructure assets Unadjusted strategic & tactical planning Required huge budget for Capital Maintenance Low price for service (potable w & ww collection) Lack of coordination between numerous departments
Urgent needs for: • SHORT TERM PLAN – remedial measures • LONG TERM PLAN – WLC approach
WATER UTILITIES – capital intensive companies Managing the infrastructure is the core business
• What do you have and where is it? • What is it worth? • What is its condition and expected remaining service life? • What is the level of service expectation, what has to be done? • When do you need to do it? • How much will it cost and what is the acceptable level of risk? • How do you ensure long-term affordability? • HOW TO DEAL WITH CAPITAL OF SUCH SCALE ? Only systematic approach could yield results!
Asset Management
The way how to keep your system in good health
• Management, engineering, financial, economic, and other practices applied to physical assets
• Providing the required level of service at acceptable level of risk and in the most cost-effective manner
AM – the art and science of making the right decisions
Asset Management
Step by step approach
• State of the assets, inventory of assets • Condition assessment, life cycle • Assets valuation • Level of service target • Risk assessment and analysis • Determine best technical / financial options • ASSET MANAGEMENT PLAN building (long term funding plan)
Belgrade Waterworks (BWS) Way
• Design of AM concept • Implementing ICT infrastructure • Creation of GIS & AM Departments • Education and training of STAKEHOLDERS • Implementing AM procedures
Introduction of ICT infrastructure • Progress, SQL server
database • Sybase IQ data warehouse • 30 servers • 1000 + PC units in network • Optic cable local network
(through sewerage mains) • 300 locations covered
- Technical IS (SCADA and remote control system,..)
- Management IS (E-business, data management,
…. )
ACHIEVED • Top management commitment • IT Infrastructure implemented • Improved organisation (GIS & AM Dept.) • Assets inventory built • GIS database in use in the whole company
- after initial support by consultants IN-HOUSE know-how
Data integration (network, O&M, commercial, etc.)
• Integration of data:
GIS based (centered) • 70 workstations input
data • To all users available
FIELD SURVEY
• Pipe Atributes
ASSETS INVENTORY
• Elements - 120.000 items (pipes, valves, hydrants, ...) • Atributes - more than 1 MIL (material, construction year, DN, ..
PIPES REGISTER
• Pipe Atributes
Distribution system potable water
GIS network Water distribution, age based
PIPE STATISTICS
• E Total network length 3.500 km
VALVES REGISTER
• Valves by DN
BULK METERS REGISTER & LOGS
• Bulk Meters introduced, Accurate water balance
BUILDING REGISTER
Plants, Wells, Pump. Stations, Office Buildings, etc.
VALUE OF BWS ASSETS
• Book keeping value (before) 300 Mil EUR
• Fair value (assessed) 1 Bill EUR • Replacement value 2.5 Bill EUR
Depreciation rate 1-2% /year
Asset Management: long term plan draft
“Looking foreward” concept
Pipe Replacement 2002-2012
BENEFITS
• Improved knowledge of own system • Data integration (network, O&M, commercial, etc.) • Better internal coordination within the company • Established sound technical tool for decision making
support • Improved effectives / efficiency • Level of service • Roadmap towards sustainability
• Specific starting results:
SPECIFIC STARTING RESULTS
• Asset registers available to all stakeholers (under permission)
• Recognized additional 1000 km of distribution network (mostly illegal)!!!
• Recognized 89 PMA (pressure managed area) as a supplement of traditional 5 altitudinal zones
• Decreased pressure level (1 bar) in part of system with high buildings (7% of network)
• Recognized 33 DMA (distict metered areas) enabling water balance brakedown
• Decreased energy consumption (up to 10%) with pumps frequency control supplement
• Established GIS based failure database (last 3 years)
23 PI groups - activity based approach Data quality (17 PI) Water Balance (6 PI) Commercial losses breakdown (4 PI) Network Operation & Maintenance (5 PI) Flow metering (3 PI) DMAs (5 PI) Consumers (5 PI) Water quality (5 PI) PMAs (2 PI) O&M sections level (3 PU)
MANAGEMENT REPORTING Performance Indicators based
• DMA Balance Brakedown for Zone ’SLANCI’
INFLOW
LEGEND:
CONSUMPTION
WATER LOSS
Assumption: illegal double service lines due to extensive vegetable production
DEMAND MANAGEMENT
DEMAND MANAGEMENT
• Billing • Consumer Consumption
Analysis based on w/m readings
• Regular DMA audits
• DMAs scheme
DEMAND MANAGEMENT
Water balance control Irregular events monitoring
• Pipe Failures in 2012 (City)
Main
Mains failure
1 Number of failures
LEGEND:
OPERATION & MAINTENANCE
Pipe failure track record annual reports rehabilitation plans
OPERATION & MAINTENANCE
• Valve Closing Scheme, Automatic Generation
Pipe Burst
• Faster burst isolation • Decreased customer
minutes lost (CML) • Link with valve
condition assessment (valve failures)
• Engaged resources overview in maintenance activities
OPERATION & MAINTENANCE
• Maintenance activities cost overview
OPERATION & MAINTENANCE
• Maintenance activities, cost structure
OPERATION & MAINTENANCE
WATER QUALITY
• Water Quality Sampling Points
MANAGEMENT REPORTING Performance Indicators based
23 PI groups - activity based approach • Data quality (17 PI) • Water Balance (6 PI) • Commercial losses breakdown (4 PI) • Network Operation & Maintenance (5 PI) • Flow metering (3 PI) • DMAs (5 PI) • Consumers (5 PI) • Water quality (5 PI) • PMAs (2 PI) • O&M sections level (3 PU)
UTILITY ANNUAL REPORTS
ASSETS INVENTORY Mngmnt - NAM Report DEMAND Management - CDA Report
OM Management - OM Report
PRESSURE Management - PMA Report
WATER LOSS Management - DMA Report QUALITY Management - WQ Report
REHABILITATION Mngmnt - in progres
ComercialDataAnalysis
AssetsStockAnalysis
Resources&Costs and FailureRatesAnalysis
PressureZonesAnalysis
UfW&NRW Analysys
WaterQuality
50/20/5 YearPlans
PERFORMANCE INDICATORS (PI)
PI group 'Commercial losses‘ (example) Operating (activity based) indicators: • number of water meters older than 10 years, • number of water meters with PAADC greater than 5 m3/day, • number of oversized water meters larger than DN 50, • number of water meters without consumption that are not
categorized as hydrants or seasonal consumers. Required actions: • Changing watermeters, • Installing C class watermeters, • Installing smaller watermeters, • Checking consumer (watermeter stucked or broken?)
NEXT BWS STEPS
• Enhancing business processes on missing data collection and raising data quality (asset hierarchy, rehabilitation and replacement values, condition assessment rating, etc.)
• Business risk exposure and risk assessment for the both potable water and sewerage systems to be continued (part of AM plan)
• Implementation of 'look forward' concept instead of look backwards, prediction models, priorities, technical solutions, long term planning and future scenarios
• Financial sustainability, cash flow models for future scenarios, tariff settings, external funding and budgeting
• Long term Asset Management plan • Continuous work on capacity building in BWS on further
integration of AM practices within the company
WB-IAWD Program Cooperation on implementation of AM
IN SMALL AND MEDIUM SIZE WATER UTILITIES
• IT solutions: Implementation of IT systems,
Network Asset Management, Maintenance Management.
• Infrastructure AM model: establishment of an accurate network database, implementation business procedures
• Data Quality: Field survey, Evaluation and validation processes, Data quality control and improvement
• Planning and budgeting procedures
• Institutional Strengthening: Problem Analysis, Priorities for Change, Business Processes, Education and training
GIS & AM dep.
Thanks for your attention