Empowering Employees to Work Smarter: Denton’s bottom up asset management plan P. S. Arora, P.E. Director Wastewater Utilities City of Denton, Texas
Presentation Scope • Why asset management • Software tools used in Denton asset management plan Planning Hydraulic • Discussion of asset management plan Modeling • Empowering employees with front row seats in Asset New Framework & Infrastructure Capacity Information Renewal Delivery Solutions AMP development • Benefits derived Operations & Maintenance
Denton’s Collection System Has Expanded to Match Population Growth 160,000 3,000,000 140,000 2,500,000 120,000 Linear Feet of Gravity Sewer Main 2,000,000 100,000 Population 80,000 1,500,000 First sewer lines were 60,000 1,000,000 constructed around the 40,000 Courthouse in the early 1900s 500,000 20,000 0 0 1880 1890 1900 1910 1920 1930 1940 1950 1960 1970 1980 1990 2000 2010 Population Gravity Main
Why Asset Management • Substantial investment in wastewater collection system assets ($0.5 Billion) • Limited dollars for O&M and replacement • Good steward of the environment, SSO reduction • Work smarter • High employee morale • Lower rates, happy ratepayers
Software Tools Used in AM • ESRI GIS • Pipeworks/Cityworks CMMS • Hydroworks/Infoworks Capacity Models • WERF SCRAPS Prioritization Model • CapPlan/Infomaster Asset Management Model • Operations staff buy in • Addition of IT/Database professional • CMOM Program
How Denton Uses Cit ityworks CMMS Work orders for: • Flushing program • CCTV • Point repairs • Service line replacements • Main line replacements • Customer calls • Odor complaints • Chokes and overflows • Manhole inspections EVERY ACTIVITY IN THE COLLECTIONS DEPARTMENT IS ENTERED AS A WORK ORDER!
Cit ityworks Combined wit ith GIS for Flu lushing Program Example, Flu lushing Staff f Vs IT IT
Cityworks Quality Control, WO Overload Created Need for Automation **SYSTEM GENERATED INSTRUCTION** Tested for batch closure 2016-06-28. Could not be closed because of the following: - WO CONTAINS INSTRUCTIONS **END OF INSTRUCTION**
In Info Work rks Model to Pla lan Capacity
5 Year Capital Im Improvement Pla lan
Success of f Wet Weather Program
SCRAPS Model • Using Probability and Consequence of Failure SCRAPS provides a numerical ranking from 0 to 100 for each pipe segment, highest being worst • Began focusing inspection and preventative maintenance in areas with higher risk based on the SCRAPS output • Feedback from the field allowed for data corrections which brought down the average risk in the collection system
Benefits of f Dig igital Database of f Collection System That Accrued fr from Im Implementation of f SCRAPS Model
O&M Staff continue to collect pipe data when flushing, Quick Cam, MH Inspections
Coll llection System by In Install Year • The idea of • subdivision plat The use of dates came with • staff involvement
Basin in Cle leaning Pri rioritization • The idea of 1, 5 and 10 year cleaning cycles developed with input from staff
Enter CapPlan Sewer • SCRAPS Model provided valuable priority ranking • It is not a complete asset management system • The next step was then to move to full asset management system
Denton’s In InfoMaster Flow Chart (s (simplified)
Denton’s In InfoMaster Flo low Chart (f (full) • Staff intimately involved in the Decision Matrix developmt
A Typical Pip ipe
In InfoMaster Recommends In Individual Repairs
InfoMaster Results Tell the Pipe Condition Story Needs Attention, 11% Poor, 2% Fair, 7% Good, 12% Excellent, 68% Quick Cam implementation with staff involvement changed CCTV paradigm
Information Management is at the Heart of AM Strategies Hydraulic Modeling Master Planning Impact Fee Analysis Annual CIP Planning Asset Management Plan CMOM Engineering & Internal Repairs Information Management Construction Point Repairs GIS New Capacity Pipe Replacement Cityworks Manhole Rehab Storage SCRAPS Manhole Rebuilds Lift Stations WinCam Service Lines Treatment Infomaster/CapPlan New Taps Clean Outs Infoworks Utility Coordination XC2 Software Inspection Maintenance CCTV Cleaning QuickCam Root Control Manholes Grease Control Smoke Testing
Cityworks to InfoMaster to Cityworks
Key O&M Strategies Drive Success Targeted Cleaning Quick Cam CCTV Quick Lock Point Repair Feet CCTV Quick Cam Inspected 800,000 700,000 600,000 500,000 400,000 300,000 200,000 100,000 - 2013 2014 2015 2016 2017
Metrics Drive Performance, Metrics Adopted by Staff Maintenance and Inspection Repair and Replacement — — — — — — — — — — — — — — — —
Customer Service Focuses on Reducing SSOs and Sewer Line Chokes, Metrics Adopted by Staff CS Metric – 1 Choke/1000 customers/yr. SSO Trends Per Fiscal Year Five Year Choke Trend 60 40 50 35 Customer Service Goal 1 Choke per 1,000 Customers per year 40 30 Reported Number of SSOs Reported Number of Chokes Per Year 25 30 20 20 Equals 3 SSOs Per 100 Miles Per year 15 10 10 5 0 FY10 FY11 FY12 FY13 FY14 FY15 FY16 FY17 CS Metric – 3 SSOs/100 miles/yr. - FY13 FY14 FY15 FY16 FY17
Contact: P. S. Arora, P.E. Director Wastewater Utilities p.s.arora@cityofdenton.com 940-349-7189
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