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Gas GAP Analysis Process - A starting point for DIMP. Adam Marxen Manager Gas Engineering and Operations Support. Alliant-Energy Utilities. Over 1,000 Community’s in Iowa, Wisconsin, and Minnesota. Customers : Gas - 410,000 Electric - 980,000 Facilities Gas

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gas gap analysis process a starting point for dimp

Gas GAP Analysis Process - A starting point for DIMP

Adam Marxen

Manager Gas Engineering and Operations Support

alliant energy utilities
Alliant-Energy Utilities
  • Over 1,000 Community’s in Iowa, Wisconsin, and Minnesota.
  • Customers:
    • Gas - 410,000
    • Electric - 980,000
  • Facilities
    • Gas
      • 8,300 miles distribution (4,500 in IPL)
      • 850 miles transmission (800 in IPL)
    • Electric
      • 43,000 miles of distribution
      • 10,000 miles of transmission
outline
Outline
  • Introduction to the Alliant Planning and GAP Process
  • GAP Data Collection/Interpretation
  • Migration to DIMP
  • Questions
alliant energy business systems know your systems know your threats
Alliant Energy Business Systems“Know your systems” “Know your threats”
  • GIS
    • Established 1998
    • ESRI’s ArcGIS with Telvent’s ArcFM
    • Integrated all gas facility records in GIS/facilities database
    • Linked facility records with inspection, leaks, and maintenance records
  • GIMMS – Gas Inspection & Maintenance Management System
    • Services, Valves, CP, Reg Stations, Steel Pipe Inspections, Odorization use and sniff tests, and maintenance tracking.
    • All inspections, leaks, and maintenance linked to GIS records
    • Initiated in 1988 & tied to GIS in 1998
alliant planning and gap process risk evaluation and ranking
Alliant Planning and GAP Process“Risk Evaluation and Ranking”
  • GAP Planning Process
    • Identify and set priorities for gas projects that create the most value and minimize risk for the company.
    • Uses system performance metrics based on service reliability and safety
  • What is a GAP?
    • A GAP exists when the measured performance indicates a higher risk related to reliability or safety.
what is the gap calculation based on
What is the GAP Calculation based on?
  • Ranking criteria:
    • Peak Low Pressure
    • Leaks
    • Corrosion
    • Reliability
    • Visual Inspection
    • Age
regulation station gap process
Regulation Station GAP Process
  • Assess each station to identify and score risks in:
    • Safety – location, traffic, barriers, leaks, corrosion
    • Operations – valves, preheaters, odorizers, station capacity, obsolete equipment, others
    • Code violations
gap scoring summary
GAP Scoring Summary
  • Score each Gas System Element on each criteria based on weakest area.
  • System Elements typically based on unique pressure zone or regulation station.
  • Sort elements based on GAP score.
  • Analyze root cause for GAP and propose measures to eliminate or reduce GAP
  • Proposed solutions drive budgets and project lists
gap data collection
GAP Data Collection
  • Gas Pressure (Charts, SCADA, and SynerGEE)
  • Reliability (GIS)
  • Gas Leaks (GIMMS)
  • Visual Inspection Data (GIMMS)
  • Pipe to Soil Cathodic Protection Readings (GIMMS, GIS)
  • Age (GIS)
  • Meetings with each Op Zone
      • Manager
      • Lead Engineering Tech
      • Chief Gas Tech
gap data collection1
GAP Data Collection
  • Gas Pressure (Charts, SCADA, and SynerGEE)
  • Reliability (GIS)
  • Growth Capacity (SynerGEE)
  • Gas Leaks (GIMMS)
  • Visual Inspection Data (GIMMS)
  • Pipe to Soil Cathodic Protection Readings (GIMMS, GIS)
  • Age (GIS)
  • Meetings with each Op Zone
      • Manager
      • Lead Engineering Tech
      • Chief Gas Tech
gap data collection2
GAP Data Collection
  • Gas Pressure (Charts, SCADA, and SynerGEE)
  • Reliability (GIS)
  • Growth Capacity (SynerGEE)
  • Gas Leaks (GIMMS)
  • Visual Inspection Data (GIMMS)
  • Pipe to Soil Cathodic Protection Readings (GIMMS, GIS)
  • Age (GIS)
  • Meetings with each Op Zone
      • Manager
      • Lead Engineering Tech
      • Chief Gas Tech
gap data collection3
GAP Data Collection
  • Gas Pressure (Charts, SCADA, and SynerGEE)
  • Reliability (GIS)
  • Growth Capacity (SynerGEE)
  • Gas Leaks (GIMMS)
  • Visual Inspection Data (GIMMS)
  • Pipe-to-Soil Cathodic Protection Readings (GIMMS, GIS)
  • Age (GIS)
  • Meetings with each Op Zone
      • Manager
      • Lead Engineering Tech
      • Chief Gas Tech
gap data collection4
GAP Data Collection
  • Gas Pressure (Charts, SCADA, and SynerGEE)
  • Reliability (GIS)
  • Growth Capacity (SynerGEE)
  • Gas Leaks (GIMMS)
  • Visual Inspection Data (GIMMS)
  • Pipe to Soil Cathodic Protection Readings (GIMMS, GIS)
  • Age (GIS)
  • Meetings with each Op Zone
      • Manager
      • Lead Engineering Tech
      • Chief Gas Tech
transition to dimp goals for improvement
Transition to DIMP - Goals For Improvement
  • Develop written plan.
  • Update to meet additional DIMP risk assessment categories
    • Excavation activity
    • Impact assessment
    • Others
  • Refine model to appropriate “block” level. Gas system too big at times and individual pipe segment too small.
  • Develop scoring system on the “block” level that summarizes all criteria.
  • Develop standard reports
  • Include positive inspections in addition to the negative. The good observations are also informative.
  • Address compression coupling failure reporting.
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