5.1.1 The fire tests should be conducted in a
3 m x 4 m, 2.5 m high cabin connected to the centre of a 1.5 m x 12
m long corridor, 2.5 m high with both ends open. The cabin area may
be increased up to the maximum size to be protected with one nozzle.
The disabled nozzle test should be conducted in a 3 m x 4 m cabin.
5.1.2 The cabin should be fitted with one doorway
opening, 0.8 m wide and 2.2 m high, which provides for a 0.3 m lintel
above the opening.
5.1.3 The walls of the cabin should be constructed
from an inner layer of nominally 12 mm thick non-combustible wall
board with a nominally 45 mm thick mineral wool liner. The walls and
ceiling of the corridor and ceiling of the cabin should be constructed
of nominally 12 mm thick non-combustible wall boards. The cabin may
be provided with a window, having a maximum area of 1 m2,
in the wall opposite the corridor for observation purposes during
the fire tests.
5.1.4 The cabin and corridor ceiling should be covered with
cellulosic acoustical panels. The acoustical panels should be nominally 12 mm to 15 mm
thick and should not ignite when tested in accordance with part 5 of annex 1 to the Fire
Test Procedures Code.
5.1.5 Plywood panels should be placed on the cabin and
corridor walls. The panels should be 3 to 4 mm thick. The ignition time of the panel
should be not more than 35 s and the flame spread time at 350 mm position should not be
more than 100 s as measured in accordance with part 5 of annex 1 to the Fire Test
Procedures Code.