This International Standard describes a method of test to determine the propensity of a conveyor belt to generate heat flame or glow when held stationary, under a given tension, in surface contact around a rotating driven steel drum. Means of varying the conveyor belt tension are described. NOTE For conveyor belts containing steel reinforcement, , it may not be possible to conduct this test in full due to the inability of the conveyor belt to comply with the requirements of 6.2. In this case premature termination according to 6.3 may be necessary.