The latest software version

What’s new in RISKCURVES v12.5

Export tool

The new Export Tool in EFFECTS and RISKCURVES allows users to export all input data and result parameters in one go, saving time and ensuring consistent documentation.

Technical details

• The Export Tool enables the direct export of modeling results into a Word document.

• This option is now available in the File —> Export menu.

• It generates a comprehensive project report, providing a complete tabular list of all input and result parameters for all models in the project.

Long pipeline available as Combined LOC scenario

A new Combined LOC model for long pipelines in EFFECTS and RISKCURVES makes it easier to model the full sequence of events following a long pipeline release, from the initial release to dispersion, fire, or explosion.

Technical details

Both the Liquefied gas and the Gas release from long pipeline models can now be added as a complete model chain. These combined LOC scenarios will track all potential events, including direct ignition, delayed ignition and toxic exposure, that might occur upon release from a pressurised pipeline. The combined model integrates the crater model, allowing for the first time crater formation calculations directly in RISKCURVES.

Improved CO₂ pipeline release modelling

Improved accuracy in CO₂ outflow calculations for Liquefied gas from long pipeline releases.

Technical details

Liquefied gas release from long pipeline model has been extended to include prediction of outflow rate after reaching the triple point. This situation of reaching solidification temperature is particularly relevant for CO₂ releases. The triple point limitation in the previous software version would stop the calculation while the pressure in the pipeline was still high enough to blow out a solid/vapour mixture. Model now continues calculations when pressure drops below the triple point, providing complete outflow data.

Details of this improvement are available in the updated Crater model validation report, which can be accessed here.

Clearer risk visualisation with IRPA Maps

Understanding Individual Risk Per Annum (IRPA) is now more intuitive with IRPA Map visualisation showing a full overview of analysed areas at a glance, ensuring easier interpretation and communication of findings.

Expanded ammonia validation

Updated Dispersion validation report was expanded with validation against ammonia experimental data, such as the Desert Tortoise, Fladis and Red Squirrel, improving confidence in ammonia modelling results.

The updated Dispersion validation report can be accessed here.

New Jet Fire validation report

New Jet fire validation report confirms the accuracy of jet fire predictions in EFFECTS, comparing model results with experimental data from tests conducted at the British Gas Spadeadam facility under Shell Research supervision. Covering Chamberlain’s model for vapour jet fires and Cook’s model for liquefied gas jet fires, this validation strengthens confidence in EFFECTS for reliable jet fire consequence assessments.

The new Jet fire validation report can be accessed here.

New Help Menu button to access use cases

The new Help menu button in EFFECTS and RISKCURVES provides a direct link to downloadable example projects from our website. These projects include calculation examples and model previews, featuring all EFFECTS models with input parameters and result visualizations, helping users better understand how to apply the software to specific scenarios.

Dispersion models Flammable cloud

The flammable cloud dispersion model reports a new graph "Cloud passage time versus distance" illustrating how long the LFL concentration will be present at a specific distance, at the cloud’s centreline. This cloud passage time is relevant for predicting ignition probability based on ignition sources.

Additional note

For more information, refer to the "Version Information" document available through the software’s <Help> dropdown in a Menubar or download the document from the EFFECTS & RISKCURVES download centre.