THE ARGUMENT FOR AN ASSET MANAGEMENT FRAMEWORK

FORCE MAINS – THE CHALLENGING ASSETS

Mark Seastead

NC AWWA-WEA 96TH ANNUAL CONFERENCE

AGENDA

COMMON CHALLENGES

BACKGROUND WORK

ASSET MANAGEMENT FRAMEWORK

IT SYSTEMS MANAGEMENT

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• 7.5% of collection systems nationwide are composed of forcemains (WERF, 2004)

• Difficult to inspect – often need to be taken out of service

• Often do not have redundancy

• Typically have a high Consequence of Failure (CoF)

COMMON BACKGROUND WITH FORCEMAINS

3Courtesy: St. Louis,Metro Sewer District

• Unlike Gravity Systems - NoManhole Access

• Flow tends to be constant

• Location in low –lying areas canpose additional environmentstresses

• Soil conditions

• Moisture

• Corrosivity

COMMON CHALLENGES WITH FORCE MAINS

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• Failure can be Significant

• Not just overflows

• Sinkholes

• Understand Risk and Incorporate as a Function of the EntireCollection System

• Consequence of Failure

• Likelihood of Failure

• Expected Level of Service to Customers

• Cost of Rehabilitation vs. Replacement

• Expected Remaining Life

• Inspection

• Maintain

• Track

WHAT TO DO?

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Do theseterms soundfamiliar?

ASSET MANAGEMENTFRAMEWORK

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Create / Acquire

Utilize

Maintain

Renew / Dispose

A FRAMEWORK PROVIDES STRUCTURE FORINTEGRATED ASSET MANAGEMENT APPROACH

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Organizational Strategic Plan

Asset Management Strategy

Asset Management Policy

Asset Management Plans

Asset Management Objectives

Planning

Implementation

Fun

ctio

nal

Pro

cess

es,

Pro

ced

ure

s

Life Cycle Activities Assets

Portfolio of asset systems and individual assets

Thank You WERF - SIMPLE

• Keep it Simple

• What is the current state

• Required level of service

• What assets are critical

• What is my minimum O&M/CIP

• Long-term Funding

AM FRAMEWORK BASICS

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• Keep it Basic

• Do you know where force mains are located and are theyrecorded electronically?

• Do you know current condition of force mains?

• Do you know the remaining useful life?

• Do you have maintenance and inspection proceduresdocumented, reproducible, and history available?

• Source data:

• GIS, CADD, CMMS, CCTV,

FORCE MAINS – CURRENT STATE

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• Suggestions

• Review GIS & Asset Registers to assess accuracy of assetdata

• Materials, age, composition, condition, LoF, specialcircumstance, etc.

• Define asset classifications by common attributes (size,material, composition, etc.)

• Develop condition scoring and require latest condition as anasset attribute

• Track historic condition through work orders or inspections

• Review/update inspection frequency based on prioritization

• Track in CMMS, GIS, CCTV, or standardized records.

FORCE MAINS – CURRENT STATE

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• Keep it Basic

• What is the demand on your force mains?

• Service area, annual throughput, etc.

• What are the regulatory requirements

• What is my actual performance (uptime, reactivemaintenance, planned maintenance, pump performance,etc)?

• Source data: SCADA, GIS, CMMS, CRM/Billing, contractedtesting

FORCE MAINS – LEVEL OF SERVICE

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FORCE MAINS – LEVEL OF SERVICE

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Concept Definition Examples

Service Attributes Aspects of service Accessibility, affordability,efficiency, quality, etc.

Levels of Service What the organizationintends to deliver

Safe transport and treatment ofwastewater

CustomerPerformance Measure

How the customerexperiences theservice

Appearance of facilities,frequency of disruptions

Technical PerformanceMeasure

What the organizationdoes to deliver service

Break rate, odor complaints,SSOs,

FORCE MAINS – LEVEL OF SERVICE

Muddy CreekWWTP

Archie ElledgeWWTP

Transfer Force Main

• Suggestions

• Link Level of Service to inspection and/or PM frequency

• Use basic analytic tools - GIS, CMMS history, SCADAhistorian, CRM/Billing to associate volume to pipe location

• Keep it Basic

• Do I know key failure modes?

• What is LoF?

• What is CoF?

• Do I know how much is costs to repair?

• Are force mains prioritized by criticality?

• Source data: CMMS or manual inspection records, AssetManagement Plans, Decay Curves, GIS

FORCE MAINS – CRITICALITY

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• Keep it Basic

• Do I know key failure modes?

• What is LoF?

• What is CoF?

• Do I know how much is costs to repair?

• Are force mains prioritized by criticality?

• Source data: CMMS or manual inspection records, AssetManagement Plans, Decay Curves, GIS

FORCE MAINS – CRITICALITY

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• Suggestions

• Begin and track failure mode analysis

• Define priority

• Probability of Failure (PoF)xConsequence of Failure (CoF)= Risk

• Add parameters to suit your complexity (e.g. redundancy)

• PoF x CoF x Redundancy = Risk w/ expure

FORCE MAINS – CRITICALITY

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Capacity10%

Internal Corrosion26%

External Corrosion19%

Surge Pressure10%

Joint Leakage15%

3rd Party Damage20%

WERF Defined Ferrous Force Main Failures (2010)

• Basic Info:• Pipe Length

• Pipe Material

• Pipe Age

• Pipe Break Data

• Material in Pipe

FORCE MAINS – SAMPLE PROBABILITY OFFAILURE

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GIS Data CMMS Data

• Basic Info:• Pipe Diameter

• Pipe Alignment

• Pipe Location

• Est. Duration ofServiceInterruption

• Adjacent LandUse

FORCE MAINS – SAMPLE CONSEQUENCE OFFAILURE

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GIS Data LOS/CMMS Data

• Keep it Basic

• Do I need redundancy?

• What alternatives exist?

• How frequently do I inspect, clean, test, etc.?

• Do failure response plans exist?

• What CIP planning exists?

• Source data: CIP tools, CMMS or inspection records,Asset Management Plans, GIS, Document Management

FORCE MAINS – O&M STRATEGIES

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• Keep it Basic

• Aggregated costs of force mains and components

• Define management strategies by asset class

• Optimized financial strategy

• Does it fit within my overall asset management plan

• How confident can you tell this story?

• Source data: CIP tools, CMMS or inspection records,Asset Management Plans, GIS, Document Management

FORCE MAINS – FUNDING STRATEGIES

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FORCE MAINS – LINKING AMTO IT

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• GIS, CADD, CMMS, CCTV

• SCADA, GIS, CMMS, CRM/Billing,Specialized Testing (ultrasonic, EM,RFEC, Pigging/Cleaning Balls, LeakDetection)

• CMMS, GIS, Hard Copy, AMP, O&M,Decay Curves, Leak Detection

• CIP tools, CMMS or inspectionrecords, Asset Management Plans,GIS, Document Management

• What do I have and where?

• Level of Service

• Criticality

• O&M Strategies & Funding

COMMON DATA SOURCES

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CMMS InspectionCondition

AssessmentsCCTV

Specialized TestingPigging/Cleaning

CMMS InspectionCondition

AssessmentsCCTV

Specialized TestingPigging/Cleaning

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PDProgramDevelopment &Implementation

AM ProgramStrategic AM & Tactical AMP

AMISAssetManagementInformation Systems

Pump AssetsLinear Assets

BRE & CIPBusiness Risk Exposure& CIP ProjectIdentification

FRAME-WORK

GIS

WBMDWeb-Based ManagementDashboards

PERFORMANCEMANAGEMENTDASHBOARDS

CCPComprehensiveCIP Prioritization

CIP PRIORITIZATION

GOOD DATA AND PROCESSESSUPPORT GOOD DECISIONS

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SUP

PO

RTIN

GTO

OLS

(INFO

SYSTEM

S)

GIS orCMMS/Other

Example: Potential Software Linkages

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GIS HydraulicModels

PipelinePrioritizationCMMS

CapacityAssessment

CIP

PipeInspection

Tools

- Asset Management- Engineering Management

Common IntegrationRecommended Integration

• Force Mains are a fact of life

• They are more challenging to assess and manage

• Using basic tools common in your organizationsnow to improve and track management

• Apply an Asset Management Framework

• Consolidate data and share between systems

SUMMARY

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