When is it permissible to modify a fire damper?

Modifying a fire damper is permissible primarily when it has been damaged. Fire dampers are critical safety components designed to prevent the spread of fire and smoke through ductwork in a building. Modifications to these components should be made cautiously and in accordance with established safety standards and regulations to ensure that their intended function is preserved.

Making alterations to a fire damper whenever deemed necessary could compromise its ability to perform effectively during a fire situation. Similarly, modifying dampers during inspections or while installing new systems could lead to inadequate performance unless those changes are specifically justified and compliant with safety codes. Changes made to a fire damper should always prioritize safety and functionality over convenience or improvisation, ensuring compliance with manufacturer specifications and local fire codes. Hence, the only appropriate circumstance for modification is in response to damage, which requires immediate attention to maintain safety standards.