Which of the following tanks is classified as a low-pressure storage tank?

Prepare for the IFSAC Hazardous Materials Exam. Use flashcards and multiple-choice questions. Each question is equipped with hints and explanations to enhance learning and ensure exam success.

Low-pressure storage tanks are designed to operate at pressures typically less than 0.5 psi (gauge). The classification of various tank types—such as dome roof tanks, open-top floating roof tanks, and vapordome roof tanks—reflects their capability to store liquids under low-pressure conditions.

Dome roof tanks have a fixed roof and are often used to store liquid products, functioning well at low pressures while preventing the escape of vapors. Open-top floating roof tanks, on the other hand, have a floating cover that rises and falls with the liquid level, effectively minimizing evaporative loss and designed to handle low pressures. Vapordome roof tanks, while similar to dome roof tanks, include a vapor space designed to contain vapor pressure without exceeding low pressure limits.

Collectively, all these tank types exhibit characteristics that allow them to be effective in low-pressure storage scenarios. Therefore, stating that they all fall under the classification of low-pressure storage tanks accurately encompasses their functional design and operational capacity.

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