The test is carried out indoors, in an environment essentially
free of air currents. The room temperature should be 20 ± 5°C.
The mattress specimen is placed directly on the test rig. The
blanket, pillow, quilt and thin light mattress specimen is placed
on the mineral wool which is laid on the test rig. The ignition source
is placed on top of the specimen. The time is measured from the moment
the ignition source is placed on the specimen.
The test
duration is one hour from the moment the ignition source is placed
on the specimen.
5.5.1
Testing with smouldering ignition
sources
The cigarette is lighted and air is drawn through the cigarette
until it glows brightly. Not less than 5 mm and not more than 8 mm
of the cigarette should be consumed in this operation. The cigarette
is placed on the specimen at a distance of at least 100 mm from the
nearest edge of the specimen or from marks left by any previous test.
The cotton wool pad is placed centrally on the cigarette, and the
clock is started.
The progress of combustion is observed
and any evidence of progressive smouldering ignition (see 6.1) or of flaming ignition (see 6.2) of the specimen is recorded.
Two separate tests are carried out with the cigarette covered
with cotton wool pad. On specimens with stitchings, one test is carried
out with the cigarette placed along a stitching, and one test is carried
out with the cigarette placed on a smooth surface if possible.
5.5.2
Testing with flame as ignition source
The gas is ignited and the gas flow adjusted to the rate indicated
in 5.2.8. The flow is allowed to stabilize for at least 120 s. The
burner is placed horizontally on the specimen at a distance of at
least 100 mm from any edge of the specimen and not less than 50 mm
from any marks left from previous tests.
The specimen
should be exposed to the ignition flame for 20 s. The exposure is
terminated by carefully removing the burner from the specimen.
The progress of combustion is observed and any evidence of progressive
smouldering ignition (see 6.1)
or of flaming ignition (see 6.2)
of the specimen is recorded.
Two separate tests are carried
out: On specimens with stitchings, one test is carried out with the
burner placed along a stitching, and one test is carried out with
the burner placed on a smooth surface if possible.