Question 1

Why should I upgrade from ALOHA to TekRisk?

Accepted Answer

ALOHA is excellent for emergency response but limited for professional QRA. TekRisk adds: SLAB dense gas model (vs. Gaussian), multi-scenario analysis, probit functions, F-N curves, individual risk calculations, interactive maps, and professional reports. It's designed for consultants and engineers needing comprehensive analysis.

Question 2

What are ALOHA's limitations that TekRisk addresses?

Accepted Answer

ALOHA uses Gaussian dispersion (limited for dense gases), doesn't support multi-scenario analysis, lacks QRA capabilities (no F-N curves, no probit functions), and doesn't integrate consequence results with risk calculations. TekRisk addresses all these limitations.

Question 3

When should I upgrade from ALOHA?

Accepted Answer

Upgrade when you need: dense gas dispersion modeling (SLAB), quantitative risk analysis, professional reports for regulators, multiple scenarios in one project, or probit-based effect calculations. ALOHA remains useful for quick emergency response estimates.

Question 4

How does TekRisk compare with ALOHA?

Accepted Answer

In three ALOHA 5.4.7 jet fire runs, TekRisk matches the flame length within 0.5 m, but not the radiation zones: that difference is still unexplained and is published on the model validation page (tekrisk.com/en/docs/validation). For dispersion, TekRisk uses SLAB (Lawrence Livermore National Laboratory), a dense gas model that is also listed among the EPA alternative models.

Feature	TekRisk	ALOHA	Advantage
Cloud-Based	Included	Not included	TekRisk Advantage
Multi-Platform	Included	Included	Equal
Multi-Language Support	Included	Not included	TekRisk Advantage
Pool Fire Model	Included	Included	Equal
Jet Fire Model	Included	Included	Equal
Fireball / BLEVE	Included	Included	Equal
Vapor Cloud Explosion (VCE)	Included	Included	Equal
Flash Fire	Included	Gaussian	TekRisk Advantage
SLAB Dense Gas Model	Included	Not included	TekRisk Advantage
QRA Capabilities	Included	Not included	TekRisk Advantage
F-N Curves	Included	Not included	TekRisk Advantage
Multi-Scenario Analysis	Included	Not included	TekRisk Advantage
Probit Functions	Included	Not included	TekRisk Advantage
Interactive Maps	Included	Not included	TekRisk Advantage
Pricing	$29-59/mo	Free	Advantages ALOHA
Free Tier Available	Included	Included	Equal

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TekRisk vs ALOHA: Feature Comparison

Frequently Asked Questions: ALOHA vs TekRisk

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