In a full NFPA 2001 discharge sequence, what best describes hold time?

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Study for the NFPA 2001 Clean Agent Test. Utilize flashcards and multiple choice questions, each with hints and explanations. Prepare thoroughly for your certification exam!

Multiple Choice

In a full NFPA 2001 discharge sequence, what best describes hold time?

Explanation:
Hold time is the interval after the space has reached the designed design concentration, during which the space remains at that concentration before any clearance or ventilation resumes. This period ensures the clean agent stays in the occupied volume long enough to absorb heat and suppress the fire, providing effective protection. It is not the release window that precedes reaching the concentration, nor the time to actually reach the concentration, nor the time required to recharge cylinders after discharge.

Hold time is the interval after the space has reached the designed design concentration, during which the space remains at that concentration before any clearance or ventilation resumes. This period ensures the clean agent stays in the occupied volume long enough to absorb heat and suppress the fire, providing effective protection. It is not the release window that precedes reaching the concentration, nor the time to actually reach the concentration, nor the time required to recharge cylinders after discharge.

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