Gas gap analysis process a starting point for dimp
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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

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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 spreadsheet example

GAP Spreadsheet Example


Gap spreadsheet example cont

GAP Spreadsheet Example (cont.)


Gap spreadsheet example cont1

GAP Spreadsheet Example (cont.)


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.


Questions

Questions


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