A detailed description of the facility and apparatus required
for conduct of this test is included in the appendix. Compliance with
the appendix forms an essential requirement of the test method. The
equipment needed may be summarized as follows:
5.1.1 Special test room fitted with fume exhaust
system as well as fresh air inlet.
5.1.2 Radiant panel frame fitted with blower or
other source of combustion air, a methanefootnote or natural gas supply system with suitable
safety controls, and a radiant panel heat source, with reverberatory
wires, arranged to radiate on a vertical specimen. Alternatively,
an electrically heated radiant source of the same dimensions may be
used provided it can expose the specimen to the heat flux distribution
shown in Table 1. The effective
source temperature of any radiant panel is not greater than 1,000°C.
Table 1 Calibration of flux to the
specimen
| Table 1
|
| CALIBRATION OF FLUX TO THE SPECIMEN
|
| Typical flux on the specimen and specimen positions at which the
calibration measurements are to be made. The flux at the 50 mm and 350 mm
positions should be , matched Calibration data at other positions should
agree with typical values within 10%
|
| Distance from exposed
end of the specimen
|
Typical
flux levels at the specimen
|
Calibration position to be used
|
| 0
|
49.5
kW/m
|
|
| 50
|
50.5
|
50.5
kW/m
|
| 100
|
49.5
|
|
| 150
|
47.1
|
x
|
| 200
|
43.1
|
|
| 250
|
37.8
|
x
|
| 300
|
30.9
|
|
| 350
|
23.9
|
23.9
|
| 400
|
18.2
|
|
| 450
|
13.2
|
x
|
| 500
|
9.2
|
|
| 550
|
6.2
|
x
|
| 600
|
4.3
|
|
| 650
|
3.1
|
x
|
| 700
|
2.2
|
|
| 750
|
1.5
|
x
|
5.1.3 The specimen holder frame, three specimen
holders, two parts of pilot burners, specimen holder guides, viewing
rakes and a viewing mirror.
5.1.4 A specimen fume stack with both stack gas
and stack temperature compensating thermocouples together with a means
for adjusting the magnitude of the compensation signal.
5.1.5 Instrumentation comprising a chronograph,
digital or sweep second electric clock, a digital millivoltmeter,
a two-channel millivolt recorder, gas-flowmeter, heat-fluxmeters,
a wide angle total radiation pyrometer and a stopwatch. Use of a data
acquisition system to record both panel radiance and the heat release
stack signal during test will facilitate data reduction .