Certified Fire Protection Specialist (CFPS)

Categories of penetration sealing include joint systems, and which of the following?

1. Through-penetration firestop systems

2. Fire-rated assemblies

3. Smoke control systems

4. Heat resistant coatings

The correct answer is: Through-penetration firestop systems

Through-penetration firestop systems are essential components in fire protection because they address the integrity of fire-rated walls, floors, and ceilings that may be compromised by the installation of pipes, cables, ducts, or other penetrative elements. These systems are specifically designed to prevent the spread of fire, smoke, and hot gases through openings where mechanical or electrical services pass. When penetrations occur, unsealed openings can allow fire to travel from one area to another, drastically reducing the effectiveness of fire-rated barriers. Through-penetration firestop systems are utilized to seal these openings, maintaining the fire resistance rating of the assembly as defined by relevant codes and standards, such as those laid out by the National Fire Protection Association (NFPA). The other categories listed focus on different aspects of fire protection. While fire-rated assemblies refer to structural systems designed to withstand fire for a specified period, they do not encompass the specific sealing function required for penetrations. Smoke control systems deal with the management of smoke to maintain visibility and reduce toxicity in the event of a fire. Heat-resistant coatings provide protection to surfaces from heat but do not specifically address the sealing of penetrations. Therefore, through-penetration firestop systems play a critical role in ensuring that penetrated barriers