CFPS Passive Fire Protection 3

Question 1

In a through-penetration firestop system, the 'F-rating' represents:

Accepted Answer

The time the system prevents passage of flame through the firestopped opening

Answer

The F-rating is the time in hours that a firestop system prevents passage of flame through a penetration, as measured in UL 1479 or ASTM E814 tests.

Question 2

Which UL standard is the primary U.S. test standard for through-penetration firestop systems?

Accepted Answer

UL 1479

Answer

UL 1479 (Fire Tests of Through-Penetration Firestops) is the primary U.S. listing standard for evaluating through-penetration firestop assemblies.

Question 3

The 'T-rating' in a through-penetration firestop system measures:

Accepted Answer

The time that the temperature on the unexposed face of the assembly and the penetrating item remains below 325°F above ambient

Answer

The T-rating measures the time until the unexposed-side temperature (on the assembly or penetrating item) exceeds 325°F above ambient, limiting heat transmission.

Question 4

An intumescent firestop sealant provides protection primarily by:

Accepted Answer

Expanding dramatically when exposed to heat to fill the void left by a burning or melting penetrating item

Answer

Intumescent materials expand (intumesce) when exposed to heat, filling the annular space or void created as combustible pipes burn away, maintaining the rated assembly.

Question 5

What is the 'annular space' in the context of a through-penetration firestop system?

Accepted Answer

The gap between the penetrating item and the edge of the opening cut through the fire-rated assembly

Answer

The annular space is the void between the outside of the penetrating item (pipe, cable, duct) and the edge of the hole in the rated assembly that must be firestopped.

CFPS (Certfied Fire Protection Specialist) Practice Test

CFPS (Certfied Fire Protection Specialist) Practice Test

CFPS Passive Fire Protection 3