Return to release notes

What's New in Version 1.3

  • Updated Tatuk control library to include the following improvements:

    •  Increased maximum image size that can be imported to 100 MB
    •  Improved map efficiency when processing a large number of model objects
    •  Improved the projection system and projection conversion functions
  • Upgraded to Access Database Engine 2013

  • Updated the Component One library to support operating BREEZE Incident Analyst via VNC

  • Adopted the worst-case release scenario in the U.S. EPA Risk Management Program (RMP) guidance for offsite consequence analysis (OCA) as the default weather conditions in the Meteorological form

  • Overhauled the BREEZE Incident Analyst start page with a new informative layout

    Overhauled Start Page - BREEZE INCIDENT ANALYST

  • Added Energy measure unit options (such as Joules, Calories, Btu etc.) in the Option menu

    Energy Mesaure Unit Options - BREEZE INCIDENT ANALYST

  • Adopted the worst-case release scenario in the U.S. EPA Risk Management Program (RMP) guidance for offsite consequence analysis (OCA) as the default weather conditions in the Meteorological form

Dispersion Model Improvements

  • Incorporated the latest modeling algorithm of continuous buoyant plume/stack release type in the AFTOX model to align with U.S. EPA AFTOX

  • Added a feature to allow AFTOX to output maximum concentration at a specified height and time

  • Implemented a function to transfer the Source Term Wizard evaporation pool calculation output to AFTOX model

  • Fixed the U.S. EPA AFTOX bug regarding maximum concentration at given height and time

  • Increased the calculation resolution to improve the accuracy of maximum distance calculation for specific Level of Concern (LOC), which is a bug in the U.S. EPA AFTOX

  • Disabled incorrect grid and discrete receptor concentration in DEGADIS model

  • Updated DEGADIS summary results based on the output file to include maximum concentrations at centerline downwind distance

  • Enabled the capability for INPUFF model to execute properly on Windows 8 and Windows 8.1

  • Added maximum concentration contour and steady state concentration contour of SLAB results in BREEZE 3D Analyst

Fire Model Improvements

  • Updated the jet fire algorithm to include jet fire at any angle

    Jet Fire Angles - BREEZE INCIDENT ANALYST

  • Updated the time period for unconfined pool fire from Output form to Source form

  • Added realistic default failure temperature (instead of 0 K) for different materials for confined pool fire model

  • Improved jet fire view factor calculation algorithm

    Improved Jet fire view algorithm - BREEZE INCIDENT ANALYST

Explosion Model Improvements

  • Replaced Baker-Strehlow model with the new Baker-Strehlow-Tang model

    Baker-Streholow-Tang Model - BREEZE INCIDENT ANALYST

  • Added ground effect on both flame speed and explosion energy to the Baker-Strehlow-Tang model

  • Removed the exposure time parameter for the BLEVE model since the parameter is inconsequential

Source Term Wizard Improvements

  • Updated the dense gas determination method in the Source Term Wizard

  • Displayed calculated Richardson number in summary results

  • Added spill rate from vessels for evaporation pool in the results summary file

  • Removed the stack source type from the Source Term Wizard

  • Updated compressed gas release (choked flow and unchoked flow) calculation algorithms

Standard Examples Improvement

  • Added examples of finite and instantaneous liquid spill and buoyant plume/stack release for the AFTOX model

  • Added examples that export Source Term Wizard output to dispersion models

Bug Fixes

  • Fixed map User Interface error caused by map control register problem in the Tatuk control library

  • Fixed a bug that prevented AFTOX to run successfully when using observation met data

  • Fixed a bug that caused incorrect stability parameter calculation in the AFTOX model when using observation met data

  • Fixed a bug that displayed a different evaporation rate in the AFTOX summary file as compared to the User Interface evaporation rate

  • Fixed a bug that used an incorrect unit for vapor cloud explosion in the TNO Multi-Energy model

  • Fixed a bug that caused the loss of the distance message when using the ruler tool in the Map Tab

  • Fixed a bug that caused low image resolution when copying and saving an image in the Map Tab

  • Fixed a bug that caused the object label displaying function in the Base Map Tab to not work properly

  • Fixed a bug that caused some functions (such as Add and Delete) in the Map Manager to not work properly

  • Fixed a bug that displayed incorrect sources created by the Source Term Wizard in the Map Tab

  • Fixed a bug in order to allow AFTOX to run when the averaging time is less than the liquid spill time

  • Fixed a bug that caused INPUFF runs to fail when only discrete receptors are used

  • Fixed a bug that transferred incorrect jet velocity and release temperature from Source Term Wizard output to dispersion models for compressed gas release

Known Issues

  • Users have to manually input multiple meteorological datasets for the INPUFF model

  • Users have to currently input maximum surface emissive power for pool fire in the chemical database

  • Maximum emission rates calculated in the Source Term Wizard are conservative

  • The tank source in the Source Term Wizard does not consider leaks through pipes connected to a tank

 

Return to release notes