How many hours in advance must the owner of a premise be notified for citywide hot work operations?

The correct notification period for citywide hot work operations is 48 hours. This requirement ensures that the owner of the premise has sufficient time to prepare for the potential risks associated with hot work, such as welding, cutting, or grinding, which can pose fire hazards.

Providing a 48-hour notice also allows for proper safety measures to be put in place, including coordination with fire safety personnel and ensuring that any necessary precautions are addressed. This timeframe helps mitigate risks and maintain compliance with safety regulations set forth by the FDNY.

Other options may suggest shorter notification windows, which would not provide adequate time for preparing the site and managing safety risks effectively. Thus, the necessity of a 48-hour advance notice aligns with best practices for fire safety and operational planning in environments where hot work is being conducted.