What is the optimal time frame to rig active desmoking and determine its effectiveness?

• A. Within 10 minutes and 5 minutes to determine
• B. Within 5 minutes and 10 minutes to determine
• C. Within 15 minutes and 10 minutes to determine
• D. Within 20 minutes and 10 minutes to determine

Answer: (A)

Actively desmoking is a rapid ventilation effort, so you want to establish the desmoking setup quickly and then verify its效果 with a fast feedback check. The best approach is to rig the desmoking system within about 10 minutes, so you don’t let smoke linger and spread to other compartments, degrade visibility, or threaten personnel and equipment. After you’ve started the system, evaluate its effectiveness after roughly 5 minutes. That short interval gives you timely evidence of whether the airflow and dilution are reducing smoke density and improving air quality, allowing you to adjust promptly if needed (for example by changing fan speeds, resealing openings, or adding more desmoking measures).

Waiting longer to rig would unnecessarily delay clearing the space, increasing exposure risk and hampering damage-control work. A longer wait to determine effectiveness (like 10 minutes) delays recognizing whether the setup is working and can waste precious time. Conversely, a very short pre-rig window or an overly long assessment window would not provide the balanced, rapid decision cycle that keeps people safe and the operation progressing.