What is referred to as the "seat of explosion"?

The term "seat of explosion" refers specifically to the point of origin of an explosion, which is characterized by a crater-like indentation. This area is critical in fire and explosion investigations because it provides valuable information regarding the dynamics of the explosion, including the force and direction of the blast, as well as potential ignition sources and materials involved. Understanding the "seat" helps investigators reconstruct the events leading to the explosion and assess the cause and contributing factors effectively.

It is essential to recognize the physical features associated with the seat of an explosion, as these can indicate the type of explosive material used and the circumstances surrounding the incident. This understanding is vital for a comprehensive investigation consistent with the guidelines set forth in NFPA 921.