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SAMS - System for Calculation of Air Pollutant Concentrations on Accidental Releases

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SAMS is a software system for the simulation of the dispersion of air pollutants during and after an accidental release at stationary (fixed installations) or mobile (for example transportation) sources. SAMS calculates the airborne concentrations of the released substance in an area of approx. 30 km x 30 km, taking into account the respective meteorological conditions, and shows isolines and/or grid areas of the concentration as a result. With this information, vulnerable areas can be identified and targeted actions can be taken in a timely manner. SAMS fulfills the requirements for a system for determining and evaluating the pollutant load in the atmosphere in the event of acute releases of substances into the atmosphere in accordance with the VDI 3783 Part 4 guideline and is available in German and English.
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During a run SAMS-Global calculates in each case every 2 minutes

  • Concentration distribution at the actual time and the
  • expected concentration distribution in the future

SAMS basic version (SAMS-Global)

SAMS contains of the following modules:

  • Gaussian cloud model based on guideline VDI 3945 sheet 1 (see: www.vdi.de).
  • Mesoscale diagnostic complex terrain wind field model [1]
  • Release rate model for gases, liquids and liquid gases with pool evaporation
  • Substance and scenario database

[1] Topography and land use data are not included for applications outside of Germany and can be supplemented by us optionally. Without topography and land use data a flat terrain with a homogeneous land cover is assumed for the dispersion calculation.

Extention modules

At the moment the following extention modules are available:

  • Extrapolation of measured meteorological data (2 to 10 minutes average of wind speed, wind velocity, turbulence and atmosperic stability) at one or several meteorological stations.
  • Dispersion calculation in build-up areas on basis of precalculated MISKAM wind fields.
  • Integration of nocturnal drainage flow fields
  • Database for measured concentrations
  • Source term calculation module including measuring location proposal
  • Facility database for managing predefined facilities or facilities parts
  • Warning at predefined locations
Hardware Requirements

No special hardware requirements are necessary for SAMS-Global. Suitable processors are e.g. Intel® Core i5 or better. Screen size should not be smaller than 19 inches. Prerequisite is a current WINDOWS operating system and Internet access.

Further information

The modular structure of the system means that it can be largely adapted to customer requirements.

We would be happy to discuss the design of “your” system with you. We would be happy to provide you with an individual offer.