【Daily Question】【Static Equipment AC Version...Question 33】February 2, 2019 – True/False Multiple Choice...Thank you for voting

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bg4.png【Daily Question】【AC Version for Static Equipment...Question 33】February 2, 2019 – True/False multiple-choice question...Thank you for voting. 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. ........................................................................... Final voting stage for the 2018 “Top 10 Outstanding Members of Haichuan” – only available via Haichuan’s official WeChat account! https://bbs.hcbbs.com/thread-2281360-1-1.html I am extremely grateful to my fellow fans who support me – vote for number 29. After voting, there will be drawings for prizes such as laptops, Haichuan cups, phone top-ups, and 100 wealth points... 10 votes/10 drawings per day... Hurry up and participate! ........................................................................... 1. Which of the following welding joints can only be inspected using radiographic methods? （） A. Class A joint for the inner cylinder of a multi-layer wrapped container ； B. Class B joints between tube sections of multi-layer wrapped containers ； C. Class A and B joints for containers made of 30mm12CrMo ； D. Joints of types A and B for containers made of 10mm022Cr19Ni10 (S30403) --------------------- 2. A urea synthesis tower made of composite plates, with a base layer of 75mm16MnR and a cladding layer of 5mm OOCr17Ni14Mo2; is post-weld heat treatment required? (). A. Required B. Not required --------------------- 3. NB/T47041-2014 can be used for the design of tower-type containers with pulling devices. （） A、Correct B、Incorrect --------------------- Answers: 1. B D 2. B 3. B 1. Comment: When selecting non-destructive testing methods for pressure vessels, designers need to have a basic understanding of manufacturing and inspection techniques; otherwise, it may result in the products designed being unable to be manufactured or inspected, or the requirements set forth being unreasonable. 2. Comments: Heat treatment affects the intergranular corrosion resistance of cladded materials, and it assesses the designer’s ability to apply the heat treatment requirements for pressure vessels in actual design work. 3. Comments: Scope of application 1.4 in the standard NB/T 47041-2014 for tower-type containers.