Question 64 in the 2011 edition: the difference between Tianjin University’s version and the association version

Thread Content

This post was last edited by Grizzly on 2016-7-30 23:14. Original question: 64. Which of the following statements regarding the installation of flame arrestors are correct? A. On the direct vent piping of storage tanks whose flash point is 28°C or lower, or whose maximum operating temperature is 43°C or higher than their flash point, a flame arrester must be installed. B. On pipelines that transport explosive mixtures capable of causing explosions or detonations, a pipeline flame arrester should be installed at the inlet to the receiving equipment. C. Before the gases emitted from a flare go into the flare tip, a flame arrester or flame suppression device must be installed on the pipeline. D. Tank flame arresters should be installed directly on the piping at the top of the storage tank; they are usually used in conjunction with breather valves rather than alone. Regarding the correct value for answer A, the association’s manual states it should be ≤45°C, while the Tianjin University manual states it should be ≤43°C. What are everyone’s thoughts?