Fires in open topped tanks are typically associated with which phenomenon?

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Prepare for the Edmonton Fire Rescue Services 159 Exam. Use flashcards and multiple choice questions, with hints and explanations. Ace your exam!

Multiple Choice

Fires in open topped tanks are typically associated with which phenomenon?

Explanation:
When hot oil is in an open-top tank and water is present, boilover can happen. Water at the bottom heats and turns to steam; the steam expands rapidly and, trapped by the oil layer, creates intense bubbling that lifts and ejects burning oil over the rim. This violent overflow is the hallmark of boilover and can spread the fire quickly. Frothover involves foaming and isn’t the same phenomenon, while slopover or spillover describe general overflow without the explosive steam-driven eruption.

When hot oil is in an open-top tank and water is present, boilover can happen. Water at the bottom heats and turns to steam; the steam expands rapidly and, trapped by the oil layer, creates intense bubbling that lifts and ejects burning oil over the rim. This violent overflow is the hallmark of boilover and can spread the fire quickly. Frothover involves foaming and isn’t the same phenomenon, while slopover or spillover describe general overflow without the explosive steam-driven eruption.

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