Fire Smoke Damper Access Door Requirements

Products for over 35 years.

Fire smoke damper access door requirements. Fire dampers must meet the ul555 test standard. The non fire rated doors come hinged or double cammed galvanized or stainless steel and can be made square rectangular or round. Lss fire damper inspection and smoke damper inspection. Lloyd industries has been an active manufacturer of access doors fire and smoke dampers and h v a c.

In order to find access to some dampers it s important to thoroughly check the area for access doors. Access doors are designed to provide entry to ductwork to access fire products. Since the development of modern fire damper protection equipment lloyd industries inc. Wall is 1 hr or less building is fire sprinklered entire duct system is 26 ga.

Nfpa 105 is the standard which prescribes the minimum requirements for smoke door assemblies and smoke dampers. O where fire dampers are too large to allow them to be reset and the fusible link replaced from outside the duct the access doors should be increased to at least 24 inches x 16 inches in size to allow a person to enter the duct. It is the control capability of the smoke control system damper that is different. Pertinent information on maintenance is provided in annex b.

Some smoke dampers are aluminum whereas fire smoke dampers are galvanized or stainless steel. The system is more sophisticated and requires coordination among alarms sprinklers fans doors and dampers. This can get facilities in trouble during ahj surveys. We manufacture both non fire rated doors as well as a 1 5 hour fire rated access door.

Often times dampers get labeled inaccessible when access can t be located at first glance. Nfpa 105 is the standard which prescribes the minimum requirements for smoke door assemblies and smoke dampers that are used as a means to restrict the flow of smoke though openings to provide safety to life and protection of property. Regular maintenance of fire and smoke dampers is required by the national fire protection association and the international building and fire codes and is enforced by authorities having jurisdiction ahj s such as the joint commission fire marshals and insurance risk auditors. In reality most of these fire and smoke dampers can be reached if you look a little harder.

Maintenance of fire dampers ceiling dampers smoke dampers and combination fire smoke dampers requirements can be found in nfpa 80 standard for fire doors and other opening protectives and nfpa 105 standard for smoke door assemblies and other opening protectives. O where the size of the duct permits access doors should be at least 18 inches x 16 inches in size.