What is the primary requirement for protecting openings to outside air in a facility?

The primary requirement for protecting openings to outside air in a facility is that they should be equipped with screens or closed access. This requirement is essential for several reasons. Firstly, screens help to prevent insects, birds, and other unwanted wildlife from entering the facility, which can pose health risks or cause contamination. Properly securing these openings is a fundamental aspect of maintaining a controlled indoor environment, ensuring that air quality remains high and that the facility complies with health and safety regulations.

Additionally, closed access to openings can also serve to minimize energy loss. When air vents or windows are left uncovered, conditioned air can escape, and unconditioned outside air can infiltrate, leading to increased energy consumption and reduced efficiency. Therefore, the correct approach involves employing screens or barriers to protect these openings effectively, thereby fulfilling both safety and efficiency mandates in accordance with COMAR regulations.