【Daily Question】 【AC Version for Static Equipment...Question 28】 January 28, 2019 – True/False Multiple Choice Question...Wish you all the best

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bg4.png【Daily Question】【AC Version for Static Equipment...Question 28】 January 28, 2019 – True/False multiple-choice question...Wish you all the best. Please enter 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. ---------------------2018 HaiChuan “Top 10 Both Sides” Outstanding Members – Final candidate voting is in progress... https://bbs.hcbbs.com/thread-2273209-1-1.html---------------------You understand all these requirements; I won’t go into detail about the detours that need to be taken, hehe——An invaluable contribution of information. https://bbs.hcbbs.com/thread-2268245-1-1.html ---------------------Part 1: Integration of [small event posts] – Further transfer – [summary in one link] – Appreciation begins with sincerityhttps://bbs.hcbbs.com/thread-2275595-1-1.html---------------------Part 1: Integration of [discussion posts] – Further transfer – [summary in one link] – Appreciation begins with sincerityhttps://bbs.hcbbs.com/thread-2275557-1-1.html--------------------- 1. When the design pressure of the flange is high, gaskets of types m and y ( ) should generally be used. When the pre-tightening load of the gasket is much greater than the operating load, it is advisable to choose a gasket with a smaller (）。 A. m ； B. and ； C. Larger ； D. Smaller ； 2. A steel cryogenic pressure vessel with a temperature below -20°C is referred to as a cryogenic vessel. A. Operating temperature B. Temperature at which the steel is used/ambient temperature C. Design temperature D. Extreme atmospheric temperatures 3. For a container designed for a temperature of -50°C, the welds that connect the supports to the shell must undergo 100% magnetic particle or penetrant testing. ( ) A. Correct B. Incorrect Answer: 1. C, A, B 2. C 3. A 1. Comment: This question relates to the basic concepts of flange design. Many designers, thanks to the use of calculation software, no longer pay attention to the significance of various parameters. As reviewers, one should accurately assess whether the parameter choices are reasonable and what factors determine the design of flanges, in order to select a more appropriate structure. The quality of pressure vessel design depends not only on safety but also on the rationality of its structure. Many people made mistakes on this question; I hope the reviewers will set higher standards for me. 2. Comments: This question relates to the basic design concepts for pressure vessels, as specified in Appendix E of GB150.3. 3. Comments: Application of manufacturing knowledge. For the special requirements regarding low-temperature vessels, refer to GB150-98 C4.6.3 (not mentioned in the new GB150? ).