What can be used to maintain some boundaries when doors or hatches are open?

Using smoke curtains and smoke blankets is an effective method for maintaining boundaries when doors or hatches are open, particularly in scenarios related to fire safety and smoke management. Smoke curtains are designed to channel and contain smoke, helping to create barriers that limit the spread of smoke throughout a space. They can be used to direct smoke toward vents or out of openings, reducing the likelihood of smoke filling a larger area and allowing for safer evacuations and improved visibility during emergencies.

Smoke blankets serve a similar purpose by providing a physical barrier to smoke movement. These products can be deployed to cover openings and help prevent smoke from permeating into protected or unexposed areas. This is crucial in fire scenarios where smoke can be just as dangerous and detrimental as flames.

Other options like fire blankets, sealants, and water barriers do not specifically address the issue of smoke containment in the same effective way. Fire blankets are used to extinguish small fires rather than control smoke, while sealants are typically related to providing airtight seals for preventing drafts or leaks, not necessarily smoke control. Water barriers can be utilized to prevent the spread of fire but are not specifically designed for smoke containment. Hence, smoke curtains and smoke blankets are the most appropriate choice for maintaining boundaries when doors or hatches are