Question 1

When should I use TekRisk vs FLACS/Gexcon?

Accepted Answer

FLACS is specialized CFD software for detailed 3D explosion modeling in complex geometries. TekRisk uses empirical models suitable for most QRA studies and regulatory submissions. If you need detailed CFD analysis for specific scenarios, FLACS may be appropriate. For standard consequence analysis and QRA, TekRisk provides sufficient accuracy at much lower cost.

Question 2

What's the difference between CFD and empirical models?

Accepted Answer

CFD (Computational Fluid Dynamics) models simulate gas behavior in detail, requiring significant expertise and computation time. Empirical models use validated correlations that provide quick, reliable results for most industrial scenarios. Both are scientifically valid for their intended applications.

Question 3

When do I need CFD modeling?

Accepted Answer

CFD is typically needed for complex indoor scenarios, congested geometries, or when regulators specifically require it. For most outdoor industrial scenarios and standard QRA studies, empirical models like those in TekRisk are appropriate and accepted by regulators.

Question 4

Are empirical models accurate enough?

Accepted Answer

Yes, for most applications. Empirical models in TekRisk are based on extensive experimental data and are widely accepted by regulatory bodies worldwide. They provide conservative estimates suitable for safety planning and regulatory compliance.

Feature	TekRisk	FLACS / Gexcon	Advantage
Cloud-Based	Included	Not included	TekRisk Advantage
No Installation Required	Included	Not included	TekRisk Advantage
CFD Modeling	Not included	Included	Advantages FLACS / Gexcon
3D Explosion Modeling	Not included	Included	Advantages FLACS / Gexcon
Pool Fire Model	Included	Included	Equal
Vapor Cloud Explosion (VCE)	Included	Included	Equal
Flash Fire	Included	Included	Equal
Interactive Maps	Included	Not included	TekRisk Advantage
Easy to Use	Included	Not included	TekRisk Advantage
Pricing	$29-59/mo	$15,000+/yr	TekRisk Advantage
Free Tier Available	Included	Not included	TekRisk Advantage
Learning Curve	hours	months	TekRisk Advantage

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TekRisk vs FLACS / Gexcon: Feature Comparison

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