【Daily Question】 【AC Version for Static Equipment... Question 26】 January 26, 2019 – True/False Question... A bright future ahead

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bg4.png【Daily Question】 【AC Version for Static Equipment...Question 26】 January 26, 2019 True/False Multiple-choice question... A bright future ahead. Please fill in the answers (multiple choice, single choice, single choice) in order. Reward rules: 1 wealth for participation, 3 wealth for each correct answer, up to a maximum of 10 wealth. This topic is valid for two days; no scoring will be given if it exceeds two days by 48 hours. You understand all these requirements; I needn’t go into detail about the many detours involved, hehe—valuable contribution of information. https://bbs.hcbbs.com/thread-2268245-1-1.html --------------------- Voting is underway for the final candidates for HaiChuan’s 2018 “Top Ten Outstanding Members”... https://bbs.hcbbs.com/thread-2273209-1-1.html---------------------1. Based on which of the following conditions should it be determined whether a container requires post-weld heat treatment? () A. Material ； B. Toxicity of the filling medium ； C. Design pressure ； D. Steel thickness ； E. Welding method. --------------------- 2. In H/D greater than 5, D refers to (） for tower-type vessels with unequal diameters. A. The minimum diameter among all tower sections B. The maximum diameter among all tower sections C. The arithmetic average of the diameters of all tower sections D. The weighted average of the diameters of all tower sections ---------------------3. For a pressure vessel with a design temperature of 310°C, Q235B steel plate can be used for its shell. ( ) A. Correct B. Incorrect --------------------- Answers: 1. A, B, D 2. D 3. B 1. Comments: These are the most fundamental criteria for specifying heat treatment requirements in the design of pressure vessels. Designers should keep these factors in mind; only when faced with related issues should they turn to the standards to find the specific design requirements outlined in GB150.4. 2. Comments: This question tests the understanding of the methods for dealing with towers of different diameters as specified in the standards. 3. Comments: The material has an upper limit on operating temperature; see above. We don’t expect designers to remember the temperature ranges of all materials, but they should have a clear understanding of the usage ranges for the most basic materials.