In a nitrogen blanket lay-up, what is a critical factor to maintain?

In a nitrogen blanket lay-up, maintaining pressure is a critical factor because it ensures that an inert atmosphere is preserved within the system. The purpose of using nitrogen is to displace oxygen and moisture, which can promote corrosion and degradation of materials inside tanks or pipes.

By sustaining a consistent and adequate pressure of nitrogen, this blanket prevents air from entering and contaminating the space. If the pressure drops, there could be an influx of moisture-laden air that compromises the integrity of the lay-up environment, leading to potential corrosion and other damaging effects on the stored materials. Keeping the pressure stable is thus vital to ensuring that the protective conditions intended by the nitrogen blanket are effectively maintained.