To supersede the requirements of Subsections 3.1.8., 3.1.9. and 3.2.8., which would otherwise permit openings in the fire separations of vaults, and limit the openings to only certain penetrations, on the basis of maintaining the integrity of the separations.
To limit the probability that fire will spread from the vault to other parts of the building, which could lead to harm to persons in other parts of the building.
To limit the probability that a fire originating in a location outside a vault will spread into the vault, which could lead to the disruption and discontinuation of service from equipment located in the vault, which could lead to an undue fire hazard in the building, which could lead to harm to persons.