CSA M422-14:2019 pdf download.Fire-performance and antistatic requirements for conveyor belting
3.1 Classification of belting
In order to be classified, belting shall meet all the criteria in all the tests specified for a particular type.
Note: It is recognized that, due to the large number of combinations of various carcasses and covers, it is impractical to conduct individual tests on every single member of a series of conveyor belting. In most cases,certain members of a series would be selected for testing. For example, for a series of belting containing the identical carcasses and having the covers made of exactly the same composition but differing in thickness, only the thinnest and thickest beltings might have to be tested; if they pass, the intermediate members would be considered to have passed as well.
4.1.2 Equipment
The equipment shall include the following:
a) At a minimum, a 530 mm cubical test enclosure. The intake shall be an ASME nozzle with a 406-216 mm reduction. If a door is provided as part of the enclosure, it shall have a transparent window to permit viewing of the sample.
b) A Bunsen-type burner (i.e., with a burner tube having an inside diameter of 10±0.5 mm) or equivalent, mounted so that the burner can be placed beneath the test specimen or pulled away from it by means of a rod extending through the front of the test enclosure. The fuel for the burner shall be propane.
c) Test piece holder and location clips, consisting of a rectangular frame not less than 500 mm high,having two sides spaced 75 mm apart on which are fitted suitable clips for mounting the test piece in a vertical plane at least 20 mm from the frame. The frame is fitted onto a suitable support to maintain the sides in a vertical orientation during the test. As some products of combustion are corrosive, the test apparatus should be constructed of material that will not be adversely affected.See Figure 1 for typical arrangement.
d) A stop-watch or electric timer to measure the test duration.
e) A mirror inside the test enclosure to permit the specimen to be viewed from the back from the viewing point of the enclosure.
f) A fume hood may be used over the apparatus or the exhaust duct may be connected directly to the outside, but in either case, the air velocity at the sample shall be less than 0.2 m/s.CSA M422-14 pdf download.