Treatment Facility Asset Management and Risk Based Assessment. NE Texas WEAT Biennial Conference May 7, 2014

Transcription

1 Treatment Facility Asset Management and Risk Based Assessment NE Texas WEAT Biennial Conference May 7, 2014

2 Asset Management What is? A set of processes to minimize infrastructure life cycle costs at an acceptable amount of risk (maximize infrastructure sustainability), while delivering an desired level of service Business Case Prioritized CIP Risk Based Assessment Preventative Maintenance Programs Condition & Criticality Assessment Data Inventory & Mapping, Gap Analysis (GeoDatabase) Data Tracking & Management (CMMS) Set Level of Service Targets 2

3 Asset Management What is? A set of processes to minimize infrastructure life cycle costs at an acceptable amount of risk (maximize infrastructure sustainability), while delivering an desired level of service Business Case Prioritized CIP Risk Based Assessment Preventative Maintenance Programs Condition & Criticality Assessment Data Inventory & Mapping, Gap Analysis (GeoDatabase) Data Tracking & Management (CMMS) Set Level of Service Targets 3

4 Why Initiate a Treatment Facility Asset Management Program? Need to Better Understand and Manage Critical Assets Conduct an Inventory and Assessment of various assets Assigning a value to the fixed assets for accounting needs Optimize Maintenance and Capital needs to reduce life cycle cost and maximize sustainability of the assets. Aging Infrastructure Moving Utilities to Maximize Value of System Renewal Dollars Competing resources for utility CIP funds Replacing specific component areas instead of entire assets Need to maximize sustainability of our existing and new infrastructure 4

5 Introduction: Why Initiate an Asset Management Program? Continuous Demand to Improve Customer Service Proactive vs. Reactive diagnosis of infrastructure needs Faster responsiveness and reduced length of outages Need for Better Justification of Capital Investments Need to provide graphical and operational based answers to respond to customer & management concerns Provide fact-based solutions to support CIP needs 5

6 Terminology What is a? Measure of the consequence of an asset failure through loss of service, damages, regulatory impact and public impact. What is a? Measure of the likelihood of an asset failure determined through physical data, performance history or field assessments. What is a? Probability of failure (Condition) multiplied by the consequence of failure (Criticality). 6

7 Implementing the Asset Management Framework Preventative Maintenance Programs Data Inventory & Mapping, Gap Analysis (GeoDatabase) Business Case Prioritized CIP Data Tracking & Management (CMMS) Risk Management Set Level of Service Targets Condition & Criticality Assessment 7

8 Condition Assessment (Facility Assets) Develop Scoring Categories Assign Weighting Factors Conduct Assessments with Owner s Staff Tabulate Overall Condition Score Condition Assessment Parameters Used for NTMWD Pump Stations 8

9 16 25 Years 6 15 Years 0 5 Years Condition Assessment (Facility Assets) Remaining Useful Life Maximo Work Order Data Site Investigations Pump Station Location Condition Score LS #10 Oakridge Dr LS #28 Hills of Hays 4.3 LS #30 Linda Dr 3.95 LS #12 Oakridge LS #4 Rio Vista 3.78 LS #36 Baptist Academy 3.56 LS #20 Browne Terrace 3.50 LS #25 Weiner's 2.95 LS #14 River Road 2.84 LS #5 Care Inn 2.65 LS #22 Holland St 2.60 LS #27 Elm Hill 2.55 LS #34 Coers Dr 2.35 LS #33 Sign Shop 2.25 LS #21 Blanco River Village 2.15 LS #16 Franklin Square 1.93 LS #38 Panorama 1.85 LS #46 Gary Job Corp 1.81 LS #1 Main 1.72 LS #31 Blanco Vista 1.64 LS #50 Asbury Place Apts 1.60 LS #11 N LBJ Dr 1.55 LS #7 Warehouse 1.43 LS #18 Fire Station

10 Condition Assessment Summary Scoring (Pump Station) PUMP STATION PARAMETERS Parameter Weight (%) Electrical- MCC, Switch Gear 15 Alternate Power (dual power feed or back up generator) 10 Mechanical- HVAC 5 Mechanical- Piping 5 Mechanical- Valves 5 Mechanical- Meters 5 Pumps 15 Motors 15 Structure- Walls 5 Structure- Roof 5 Structure- Foundation 5 Instrumentation 5 SCADA 5 Weighted Score Wallace Street Booster PS 68.8 Raw Water PS No Apollo PS No McKinney No. 1 PS 57.8 Hailey PS 54.3 Shiloh PS No Shiloh PS No HSPS 1-1- S. Garland 52.8 HSPS 1-1- Plano 52.5 HSPS 1-1- Allen 52.5 Murphy Booster PS 51.3 Apollo PS No Rockwall PS 50.8 HSPS Casa View PS 50.5 Rockwall Farmersville PS 47.3 HSPS Rockwall No. 1 PS 43.8 Forney PS 40.0 HSPS Raw Water PS No HSPS Raw Water PS No Very Poor Poor Fair Good Very Good 10

11 Condition Scoring Grouping Facilities Determine the total condition score for each facility grouped into five general categories: CONDITION ASSESSMENT SCORING LEGEND Score Condition Assessment Scoring Definition Very Good Sound physical condition. Total Score < 25 Good Fair Poor Very Poor Acceptable physical condition. 25 Total Score < 50 Normal wear and tear. 50 Total Score < 75 Failure likely in short to medium term. 75 Total Score 85 Failed or near failure. Total Score > 85 Major work or replacement required urgently. 11

12 Criticality of Facilities PROPOSED CRITICALITY PARAMETERS & WEIGHTING SYSTEM Capacity Affected (30%) Process (50%) Based on Percent of Total Plant Based on Treatment Process Capacity (770 MGD) Lost Effectiveness w/o Component 35 MGD ( 4.5%) Capacity Lost = MGD ( %) Capacity Lost = 30 Mild = MGD (9 18%) Capacity Lost = 50 Moderate = MGD (< %) Capacity Lost = 70 Severe = MGD ( 36.3%) Capacity Lost = 100 Outage Duration (20%) Based on Estimated Response Time, Parts Availability and Length of Repair 2 Days = Days = Days = Days =

13 Criticality of Buried Assets PROPOSED CRITICALITY PARAMETERS & WEIGHTING SYSTEM Environmentally Sensitive Areas (30%) Number of Customers per Piping Segment (25%) In Edward's Aquifer Recharge Zone = Upstream Population >100, = 100 In Edward's Aquifer Contributing Zone Upstream Population 25,001 = ,000 = 70 Upstream Population 10,000 - Lake, Running River / Creek = 90 25,000 = 40 Upstream Population < 10,000 In Floodplain = 50 = 10 In Wildlife Area = 40 High (30%) Access Issues (15%) Hospital, Military Base, SA Airport, School, University, Vulnerable Well, Central Business District / River Walk = 100 Church, Fire Station, Golf Course, Historical District, Library, Mission, Park, Police Station, Public Meeting Place = 80 River / Creek Crossing = 100 Crosses Under Highway = 70 Commercial = 60 Railroad Crossing = 40 Residential = 40 Number of Customers per Piping Segment (25%) Access Issues (15%) High Areas (30%) Environm entally Sensitive Areas (30%) 13

14 Criticality Grouping of Facilities Determine the total criticality score for each asset and group into four categories: CRITICALITY ASSESSMENT SCORING LEGEND Score Criticality Assessment Scoring Definition Low Total Score < 30 Medium 30 Total Score < 50 High 50 Total Score 70 Very High Total Score > 70 14

15 Implementing the Asset Management Framework Preventative Maintenance Programs Data Inventory & Mapping, Gap Analysis (GeoDatabase) Business Case Prioritized CIP Data Tracking & Management (CMMS) Risk Management Set Level of Service Targets Condition & Criticality Assessment 15

16 Risk Based Assessment (RBA) Leveraging the Asset Condition and Criticality for Risk Based Assessment Risk = ƒ (Criticality x Condition) What is the Consequence of Asset Failure? Interruption of Service Lack of Redundancy Difficulty of repair Damage to property Negative Public image Regulatory Compliance What is the Likelihood of Asset Failure? Asset age Asset material Performance of asset Annual maintenance costs Available Capacity GIS CMMS Hydraulic or Process 16 Model

17 Prioritizing Areas of Greatest Need through Risk Management Pipe Corrosion (15 points) Infiltratio n/inflow (15 points) Pipe Age (25 points) Pipe Material (25 points) SSOs & Stoppages (20 points) Condition Scores Poor Very Poor Fair Very Good Good Criticality Scores Low Medium Very High High Capacity Scores Low Medium Very High High Condition Risk Matrix Capacity Risk Matrix Very Good Good Fair Poor Very Poor Low Medium High Very High Low Low Mediu m Medium High High Very High Condition Risk Rating High Risk = Short Term CIP Medium Risk = Long Term CIP Very High Capacity Risk Rating 17

18 Criticality Risk Based Assessment Condition Very Good Good Fair Poor Very Poor Low Medium High Very High 18

19 CIP Development based on Risk Priorities Criticality Priority Condition Very Good Good Fair Poor Very Poor Low K G Medium No Projects L H D High M I E B Very High N J F C A SHORT TERM CRITICAL NEEDS 19

20 Implementing the Asset Management Framework Preventative Maintenance Programs Data Inventory & Mapping, Gap Analysis (GeoDatabase) Business Case Prioritized CIP Data Tracking & Management (CMMS) Risk Management Set Level of Service Targets Condition & Criticality Assessment 20

21 Developing Business Case Prioritized CIP Business Case Required for Each Project Project Name & Focus Area RBA Score to LOS Targets Alternatives Evaluated Cost Estimates Funding Source 21

22 Developing Business Case for CIP Projects Business Case Requirements Funding Sources CIP Renewal Projects Phased Over Multiple Fiscal Years by Risk and Service Level s Service Level s Project Alternatives Evaluated Risk Based Assessment Project Cost Estimates Project Priority Scoring 22

23 Integrated CIP for Long Term Asset Management Plan NTMWD Asset Management Renewal CIP Budget Fiscal Year Rehabilitation/ Renewal Cost 2010 $968, $9,306, $19,535, $17,051, $27,852, $19,583, $23,245,000 Total $117,541,700 23

24 Critical Water Facilities: City of Arlington 24

25 Arlington Case Study: Project Drivers Aging Infrastructure Recent failures with major water treatment facilities greater than 40 years old Need Tools to Track and Manage Assets at WTPs New Staff and Outdated CMMS Need faster responsiveness/reduced length of outages Need for Justification of Capital Investments Provide fact-based solutions to support CIP needs

26 Capture of Accurate Field Data and Develop/Implement GIS Geodatabase Utilize As-built plans to input attribute data into the GIS geodatabase Develop features with missing attribute data Potholing & GPS all critical assets by surveyor Finalize asset location x,y,z and attribute data 26

27 Asset Inventory: (Geodatabase Structure Review) Water Utilities Database WaterFeatureDataset WaterLine WaterValves SewerFeatureDataset Sewer Line Manholes TreatmentFeatureDataset TreatmentFeatureDataset WaterLine ChemicalLine Valves WStorage Pump Meter PumpStation Legend Proposed Existing 27

28 Condition Assessment (Vertical Assets) 28

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30 David Jackson, P.E., BCEE Scott Cole, P.E