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This post was last edited by kareale88 on 2019-4-26 at 10:23. File: bg4.png 【Daily Question】 【Static Equipment Discussion Forum...Question No. 116】 April 26, 2019. Modified multiple-choice questions...Everything is going well........................................................................... The question is taken from the standard NB/T 47041-2014 «Tower Containers». Please point out any inaccuracies in the modifications; if you have any good suggestions, feel free to reply with them – rewards will be given generously. ........................................................................... Answers (multiple choice, multiple choice, multiple choice) please fill in in order. Reward rules: 1 wealth for participation, 3 wealth for each correct answer, up to a maximum of 10 wealth. ........................................................................... 1. The allowable deviation for the distance between the corresponding interfaces of the level gauge for tower-type containers is: ( ) mm. A、≥1.5 ; B, ±1.5 ; C、≤1.5 ; --------------------- 2. The allowable deviation for the circumferential position of the interface corresponding to the level gauge of the tower-type container is: ( ) mm. A、≥1.5 ; B, ±1.5 ; C、≤1.5 ; --------------------- 3. The allowable deviation for the difference in the external extension length of the connecting pipes for tower-type container level gauges is ( ) mm. A、≥1.5 ; B, ±1.5 ; C、≤1.5 ; --------------------- Answer: (Assessing the manufacturing, inspection, and acceptance of tower-type containers) 1. B 2. B 3. C See attached figure: Dimensional tolerance diagram
Many standard manufacturing specifications are written in this way; I asked my supervisor before as well, and it turns out that by writing the data directly in this format, the maximum allowable deviation value is indicated.
To avoid any misunderstandings among everyone. It has been changed to: maximum allowable deviation value. Additionally, I have posted a discussion thread for further discussion.
【Discussion Thread 47】The allowable deviation for the circumferential position of the interface corresponding to the tower-type container level gauge is 1.5 mm. https://bbs.hcbbs.com/thread-2685324-1-1.html (Source: Haichuan Chemical Industry Forum)
1. B 2. B 3. C The answers to questions 1 and 2 should both be ±1.5!