Spill Impact Analyst

Spill Impact Analyst provides the pipeline industry with in-house capabilities for overland spread and water transport analysis on hazardous liquid pipelines.

This flexible ArcGIS extension uses the most advanced overland flow analysis engine, FLO-2D, to project the impact of a spill and identify liquid line HCA could-affect segments for pipeline integrity management.

FLO-2D performs overland spread analytical functions within Spill Impact Analyst. It was specifically selected because of its advanced modeling capabilities and is superior to older raindrop or buffered-vector approaches. FLO-2D models the actual physical process of a wave front propagating over terrain. New Century Software and FLO-2D have an exclusive license arrangement for application in the oil and gas industry.

Liquid spill results can be viewed in a variety of formats. The hydrograph tool provides analysis of release points, system shut down time, valve closures, and flow. The drain down graph lays out top of pipe and top of ground data with the nearest valves serving as boundaries. Results can also be viewed in ArcMap as spill plumes consisting of individual DEM grid cells with impact time, final volume, etc. for detailed analysis.

Features

• Add/edit/delete downloaded pipeline data
• Analyze a variety of products using preconfigured or user specified media
• Perform water transport trace analysis using USGS NHD data
• Support standard NPMS layers and user defined HCAs
• Use SDE or Geodatabase datasets for NHD, DEM, and HCA data
• Calculate release points at user specified intervals and/or locations, and NHD waterway intersections
• Calculate release volume automatically based on valve isolation points, line fill, depth of cover, valve closure time, response time, and flow rate
• Represent volume realistically in a time vs. flow rate hydrograph
• Perform time-based full dynamic wave momentum analysis using inflow hydrograph
• Produce spill plumes, water transport vectors, could-affect segments, and not-affect segments in a personal geodatabase
• Calculate pool fire thermal radiation hazards around the resulting spill plume in ArcMap
• Create “what if?” analyses by adjusting variables such as valve types, pipe segments, and depth of cover
• Calculate could-affect segments based on could-affect release points
• Categorize liquid HCA Could-Affect segments by HCA type
• Produce detailed reports of analysis results including time to impact and impact volume

Technical Specifications

• ArcGIS
• Relevant data stored in a pipeline database
• ArcView, ArcEditor, or ArcInfo required for viewing
• Microsoft .NET