Asset Management for Infrastructure: Identification, Prioritization and Justification

Water Main Asset Management Identification, Prioritization, Justification Evan N. Pratt, PE Principal 254 W. Eastland Street | Gallatin, Tennessee 37066 | www.ohm-advisors.com

Learning Objectives • Develop an understanding for cheap and cost effective asset management using readily available data • Review a method for needs prioritization • Identify additional steps for prioritizing multiple assets

Check In What’s it like in your community or agency?

Check In Value of all of your infrastructure? Lowest cost of reinvestment? Who “gets it”?

Check In Tools CIP 1 or more Utility Asset Management plans Combined Asset Management plan Budget for above

Area: City of Romulus 35.9 mi2 Population: 2000 census: 22,979 2007 estimate: 24,414 Infrastructure: water main: 300 miles san. sewer: 150 miles roads: 220 miles Approximate Replacement Value: $1 Billion

What is Asset Management?

Providing the desired level of service at the lowest LIFE CYCLE cost.

What is Asset Management? ?

Asset Management with Simple Tools and Historic Data

Your Tools Main break sheets Push pin map Spreadsheets Lists GIS

Simple Tool

Asset Condition Model Road Assets Condition Point of Major Rehabilitation Life of Asset Time

Challenges for Water Main Asset Condition Model • Environment Condition • Material Point of Action • System Operation Time

Two Central Questions Condition assessment • What is it • How can it be done? Prioritization • Critical Asset concept • When to act, in what order?

Condition Assessment 1. Physical Signs 2. Service Delivery Signs 3. Signs of Increasing Risk

Condition Assessment Physical Signs • Number of water main breaks increasing • Increasing age of water main Service Delivery Signs • Discoloration in the water • Inadequate water pressures • Inadequate fire hydrant flows

Condition Assessment Signs of Increasing Risk • Critical pipe failures • Non-compliance with Safe Drinking Water Act • Severe breaks when they occur • Angry Planners or Elected officials…

The W.I.N. Model Service Delivery • Pressure variations • Fire protection capacity or ISO hydrant test results • Pipe friction losses per length of pipe

The W.I.N. Model Physical Conditions • Age of pipe assets • Number of water main breaks • Frequency of breaks • Corrosion

The W.I.N. Model Risk Management • Severity of breaks • Consequences of failure • Future development potential

City of Southfield Area: 26.2 mi2 Population: 2000 census: 78,296 2007 estimate: 76,285 Infrastructure: water main: 360 miles san. sewer: 300 miles roads: 242 miles Approximate Replacement Value: $1.5 Billion

Simple Tool

Quantification of Infrastructure Avg Avg Peak Head loss Group # D, inch Hr. psi ft/1,000 ft Age Breaks 1 6.7 45 3.42 1947 41 2 6.4 44 0.9 1972 26 3 6 39 0.52 1946 7 4 7.75 59 1.42 1976 17 5 7.4 51 2.56 1973 21 6 6.3 43 1.12 1953 27 7 6.9 47 2.4 1962 33 8 7 51 1.4 1959 7 9 12 52.5 0.001 2003 0 10 6.95 55 11.3 1954 40

Prioritization of Infrastructure Friction Severity Pressure Age Break Community Corrosion WIN Priority Group Factor Index Factor Factor Factor Impact Factor Factor Ranking A 0.30 0.56 0.87 1.00 1.00 1 0.2 4.93 1 B 0.08 0.53 0.89 0.99 0.63 0.2 0.2 3.52 6 C 0.05 0.50 1.00 1.00 0.17 0 0 2.72 10 D 0.13 0.65 0.66 0.98 0.41 0 0.2 3.03 8 E 0.23 0.62 0.76 0.99 0.51 1 0 4.11 3 F 0.10 0.53 0.91 1.00 0.66 0 0 3.19 7 G 0.21 0.58 0.83 0.99 0.80 0.2 0.2 3.81 5 H 0.12 0.58 0.76 0.99 0.17 1 0.2 3.84 4 I 0.00 1.00 0.74 0.97 0.00 0 0.2 2.91 9 J 1.00 0.58 0.71 1.00 0.98 0.2 0.2 4.66 2

The W.I.N. Model Physical Conditions • Age of pipe assets • Number of water main breaks • Frequency of breaks • Corrosion

Collective Prioritization How to Eat the Elephant: • Water Main improvements • Sanitary sewer improvements • Pump Station improvements • Plant Improvements

Collective Prioritization If Possible • Storm sewer improvements • Road improvements

Roads Priority Map Water Main Priority Map Sanitary Sewer Priority Map

Water Infrastructure Prioritization

How to Get Behinder 80,000,000 70,000,000 60,000,000 50,000,000 Needed Funding $ Budget 40,000,000 30,000,000 Existing Funding 20,000,000 10,000,000 - 2005 2010 2015 2020 2025 2030 Years

Education Program: KISS

Learning Objectives • Developing an understanding for cheap and cost effective asset management using readily available data • Evaluating a method for needs prioritization • Identifying additional steps for prioritizing multiple assets

Key Points • People need to know the total value of your system • Use the car analogy; millions are a modest % • Assess the condition of your assets • Prioritize replacement and maintenance

Key Points • Engage decision makers in the categories for prioritization • Critical assets, development, fire protection all get people’s attention! Tie to reinvestment needs.

Asset Management for Infrastructure: Identification, Prioritization and Justification

by OHM Advancing Communities on Aug 11, 2009

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