best practices for validating pipeline gis data · 2016. 5. 10. · the secret sauce. predictable...
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GIS and New Pipeline Construction:Best Practice for Validating GIS Data
John W. MarinoPlains All American Pipeline LP
Jacob RamirezBSD Consulting Inc.
April 27, 2016
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Why does it matter?
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Why does it matter?
Trust in GIS
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The Secret Sauce
Predictable Project Deliverable
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Ensuring Predicable & Transparent GIS Data Deliveries
• Communication• Documented GIS Workflows• Automated Data QC and Reporting• Feedback to all systems/stakeholders
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Communication is KEY!
Engineering
SurveyConstruction
&
Inspection
Standards
Schedule
Schedule
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Project Pre-Planning
• Project kickoff meeting to issue required documents, files, and databases to survey contractors and convey expectations.– Survey Standard– Data Dictionary– Blue Sky Project Database Seed File– Procurement Data for Purchased Materials
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Project Communication
Inspection Weld Map
Survey Weld Map
Inspection Material Inventory
Survey Feature Codes
Constant data QC and comparison
Constant data QC and comparison
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Provide Feedback with Metrics• QC data for quality weekly/bi-weekly• Creates training opportunity between
operator and contractor.
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Communication Breakdown Leads to Data Gaps
Engineering
SurveyConstruction
&
Inspection10
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Construction and Survey Scheduling
Rode bore installation
Drag section pulled through
Survey missed weld shots
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Communication BreakdownMissing Welder Stencil
Welder Initials
Girth Weld Data Points
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Documented GIS Workflows:ESRI Workflow Manager
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Blue Sky Project Database Validation• Verify survey data is delivered in format defined in survey
standard.
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Duplicate Point Numbers Report
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Centerline Checks
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Centerline Topology:Spatial Check for self intersecting
centerline (2D Environment)
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Corrected CenterlineA difference of 16 linear feet.
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Offline Events Checks• Walk key subcode tables in ArcMap and remove
survey shots not located on the centerline
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Address Offline Events
• Station is derived for all survey points and stored in the project database
• SQL Filters can help, but entire crossings can be filtered out
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Offline Events Continued
• Offline weld data can cause errors when striking the centerline and loading data to PODS
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What does all the project management buy us??
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Successful PODS Data Load
• Load data within 60 days of delivery of Final Approved As-built Point File from Survey Contractor
• Accurate centerline alignment and linear reference
• Records of compliance and due diligence
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Questions?
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