Which statement about ALOHA and CFD is correct?

• A. They are used to predict weather patterns in the facility.
• B. They are used to assess electrical safety.
• C. They are used for financial risk assessment.
• D. They are used for dispersion/consequence analyses.

Answer: (D)

ALOHA and CFD are modeling tools used to understand how a released hazardous substance spreads through air and what consequences it could have. ALOHA provides quick, simplified estimates of vapor plumes and related hazards from a release, helping to determine downwind hazard distances. CFD uses detailed numerical simulations to capture complex flow around equipment, buildings, and terrain, giving a more precise view of dispersion and potential impacts.

The purpose of these tools is dispersion/consequence analysis, which supports risk assessment by predicting where and how the release might travel and what concentrations or thermal effects could occur. They aren’t used to predict weather patterns, assess electrical safety, or perform financial risk analyses, as those areas rely on different methods and models.