[Daily question] [Static Equipment Exchange Edition...Question 54] Multiple choice question on February 23, 2019...The work went well

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This post was last edited by kareale88 on 2019-2-23 11:07 bg4.png [Daily question] [Static Equipment Exchange Edition...Question 54] Multiple-choice question on February 23, 2019... Good luck with the work... Blessings to Haichuan's friends: Happy every year, a happy family, good luck, everything goes well and everyone is healthy, and good luck in life! .................................................................................... Please fill in the answers (single choice, single choice, single choice) in order. Bonus rules: Participation will reward 1 wealth, and correct answers will reward 3 wealth for each item, with a maximum of 10 wealth. This topic is valid for two days and will not be graded for more than two days and 48 hours. .................................................................... The final voting stage of the 2018 "Ocean Double Top Ten Outstanding Members" - participation is limited to the official WeChat account of Ocean S! See link below for details: https://bbs.hcbbs.com/thread-2281360-1-1.html Thank you very much to the sea friends who support our region - vote on the 28th (@ bubble_ZPTK) No. 29 (@kareale88) No. 30 (@亚美) No. 31 (@梦100) Draw after voting: Rewards such as notebooks, Haichuan Cup, phone bills, 100 wealth... 10 votes/10 draws/day... Hurry up and participate... 1. The following description of the steel tower container is incorrect ( ). A. The minimum thickness of the tower body of high-alloy steel tower vessels shall not be less than 3mm. ； B. The minimum thickness of the skirt cylinder including corrosion allowance shall not be less than 6mm ； C. When using a conical skirt, the half-cone apex angle should not exceed 15° ； D. When the lead-out pipe is connected with a flange in the skirt, the inner diameter of the reinforced pipe channel should be larger than the outer diameter of the flange. --------------------- 2. Q245R and Q345R steel plates with a shell thickness greater than ( ) mm should be used in a normalized state. . A, 25 B, 30 C, 35 D, 36 -------------------------- 3. The welding joint coefficient must be determined according to the weld form of the butt joint and the length ratio of the non-destructive test. () A. Correct B. Wrong--------------------- Answer 1. A 2. D 3. B 1. Comments: refer to: Tower vessel NB/T47041-2014, tower design technical regulations HG20652-1998. 2. Comments: This question comes from 4.1.4 in GB150.2 and tests the proficiency in the technical conditions for ordering commonly used pressure vessel materials. 3. Comments: To examine the designer’s understanding of the selection of welding joint coefficients, see GB150.1 4.5.2.1 The welding joint coefficient should be determined based on the weld form of the butt joint and the length ratio of the non-destructive testing.