|Description / Abstract
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|This method of test for surface burning characteristics of
building materials is applicable to any type of building material
that, by its own structural qualities or the manner in which it is
applied, is capable of supporting itself in position or may be
supported in the test furnace as described in this Standard (see
Appendix A) or in a manner comparable to its recommended use.
The following materials shall be tested and classified in
accordance to CAN/ULC-S102.2:
A Materials which cannot be tested as described in Clause 1.1
without the use of supporting material that is not representative
of the intended installation;
B Materials which, when tested in the manner described in Clause
1.1, melts or drips, or otherwise disintegrates and continues to
burn on the floor of the test chamber;
C Materials designed for use in a relatively horizontal position
with only its top surface exposed to air; or
D Thermoplastic materials.
For material with a low thermal inertia which demonstrate
anomalous behaviour in the test chamber (see Clause 9.2.4), the
materials shall additionally be tested in accordance with
CAN/ULC-S127, Standard Corner Wall Method of Test for Flammability
Characteristics of Non-Melting Foam Plastic Building Materials. See
For multilayer or composite materials in which only the surface
materials melts or drips during the test and the remainder of the
specimen remains self supporting, one test is conducted with
support and one test is conducted without support. An additional
test in conformance with the requirements of CAN/ULC-S102.2,
Standard Method of Test for Surface Burning Characteristics of
Flooring, Floor Coverings, and Miscellaneous Materials and
Assemblies, shall be conducted. Triplicate testing shall then be
conducted and reported using the method that produces the highest
Flame Spread Value (FSV).
Where a material cannot be readily determined to be
thermoplastic or thermoset, one test is conducted in
accordance with this standard and one additional test in
conformance with requirements of CAN/ULC-S102.2, Standard Method of
Test for Surface Burning Characteristics of Flooring, Floor
Coverings, and Miscellaneous Materials and Assemblies. Triplicate
testing shall then be conducted and reported using the method that
produces the highest FSV.
The primary purpose of the test is to determine the comparative
burning characteristics of the material or assembly under test by
evaluating the flame spread over its surface when exposed to a test
fire and thus establish a basis on which surface burning
characteristics of different materials or assemblies may be
compared, without specific considerations of all the end use
parameters that might affect these characteristics.
Smoke Developed Value (SDV) and Flame Spread Value
(FSV) are recorded in this test. However, there is not
necessarily a relationship between these two measurements.
It is the intent of this method to register performance during
the period of exposure, and not to determine suitability for use
after the test exposure.
This method does not establish standards of performance for
specific applications. It is a means of evaluating the response of
materials, products or assemblies to a particular fire exposure
under controlled laboratory conditions.
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