This part of PD 7974 provides guidance on FSE and the necessary interaction with fire service intervention activities. This Published Document applies irrespective of whether the design objective, or fire service activities, are intended to support life safety, property, business, mission, or heritage protection objectives, as defined in the qualitative design review (QDR) process described in BS 7974. The guidance provides an understanding of both the capabilities and limitations of fire service intervention, and takes into account the physiological demands on fire?fighters, the fire?fighting procedures that are used and the limitations of fire?fighting equipment.Incorporates the following:PD 7974-5:2014