SCADA City of Phoenix Water Services Department Presented

SCADA City of Phoenix Water Services Department Presented by Rico Diaz July 15, 2004

City of Phoenix Water Services Department n Five Water Treatment Plants Two large Wastewater Treatment Facilities One Water Reclamation Plant Over 220 Water Distribution Sites n 24 Lift Stations, 16 Metering Stations n n n

City of Phoenix Water Service Area Map 5 1) Verde WTP 2) 24 th Street WTP 3) Deer Valley WTP 4) Val Vista WTP 5) Union Hills WTP Cave Creek WRP 6) 23 rd Ave WWTP 7) 91 st Ave WWTP 8) Distributions SCADA 3 2 1 8 6 7 4

Water Treatment Plants

Remote Facilities

Wastewater Treatment Plants

SCADA SYSTEMS n n n A SCADA system is utilized at each facility to monitor and control the process Total of eleven systems Seven different vendors Five of the systems are in the Distributed Control System category (DCS) Water Distribution has over 220 RTUs

HMI/CONTROLLER DCS

HMI/CONTROLLER I/O DEVICES HMI Database HMI Station Controller Database DCS I/O DEVICES HMI/Controller Database Programming Station HMI/Programming Station

I/O DEVICES n n n n Flow meters, power meters, temperature Analytical instruments ( D. O. , Chlorine ) Variable frequency drives (VFD) Motor start/stop, valve open/close Motor run status Overload and alarm status Tank levels

SCADA Functions n n n Auto pump pacing, level control, monitoring and alarming Process trending and recording Flow control and flow pacing Pressure control Chemical feed control and monitoring Process alarm notification

Benefits of SCADA n n n Reduce electrical and chemical costs Essential for maintaining regulatory compliance Reduce operational man power Facilitates efficient management of capacity in the water distribution system More efficient plant process

Current Situation and Future Plans n n n Process control system standards study –Feb 2000 Completed RFP and selected new SCADA vendor - Feb 2002 First two systems completed Standardized deployment of new system Three more are planned for conversion over the next 18 months Remainder to be completed by 2007

Current Situation and Future Planscontinued n Process control network project initiated – Oct 2003 24 X 7 network that is secured and dedicated for process control environment n Redundant communication to critical sites n Support security systems ( Intrusion detection, card access and video surveillance ) n Securely support in-plant WLAN n

Distribution SCADA Current Communications

New Standard Configuration

PCN

WLAN Conceptual Design

Other Improvement Initiative n Initiated Process Control Optimization Study Identify new technology to improve process and/or reduce operational costs n Analyze current technology in use n Analyze overall system performance n