[Phase 1 of Time-Limited Quick Response Contest] 008 [Completed]
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Rules: 1. If you want to answer immediately, give a score of +1 wealth to floor 1 and write your answer in the “Reason for action” field (only the content within parentheses); see the diagram below for details. 2. “*” represents a Chinese character or a digit, and the answer must match exactly to be considered correct. 3. The first person to answer correctly will receive +10 wealth points; please reply in the comments on floor 2 or below to claim the reward ； 4. The scope of questions covers the commonly used standards and experience manuals in the fields of process engineering and piping ； 5. The difficulty level of the questions increases from easy to difficult. 6. Lower-grade students are welcome to participate actively. Question for this issue: 008. When oxygen pipelines are laid alongside pipelines for flammable gases, liquefied hydrocarbons, and flammable liquids, the oxygen pipelines should be placed on one side; they should be separated from those pipelines by utility pipelines, or a clear distance of (******) mm should be maintained between them. Standard answer: Not less than 250. Winner: Yang Zhanhui. This post was last edited by hutom123 on 2009-3-25 09:30.]
The standard answer is 250. When oxygen pipelines are laid together with pipelines for flammable gases, liquefied hydrocarbons, and flammable liquids, the oxygen pipelines should be placed on one side; they should be separated from those pipelines either by utility pipelines or by maintaining a clear distance of (250) mm. This post was last edited by Pseudo Xiao Bao on 2009-3-15 11:09.]
The questions raised by the original poster are all design-related; they are too digital-oriented, and who can remember them?
In accordance with the \"General Rules for the Design of Pipeline Layout in Petrochemical Industries\" (SH3012), when oxygen pipelines are laid alongside pipelines carrying flammable gases or flammable liquids, the following requirements must be met: 1) Oxygen pipelines should be placed on one side, and it is not advisable to lay them directly above or below pipelines carrying flammable gases or flammable liquids; 2) When laid parallel to each other, these two types of pipelines should be separated by non-combustible materials, or the clear distance between them should be at least 250 mm. According to the \"Code for Design of Industrial Metal Pipelines\" (GB50316), the clear distance between oxygen pipelines and pipelines carrying Class B fluids should be at least 500 mm. The cross net distance should not be less than 250 mm. When the pipeline uses a welded connection structure without valves, its parallel clear distance can be taken as 50% of the aforementioned clear distance
The clear parallel distance between oxygen pipelines and Class B fluid pipelines shall not be less than 500 mm. (GB50316),
Everyone’s answer format does not meet the landlord’s requirements. . . The original poster used 6 *. . . . It should be no less than 250. This post was last edited by KUNSEE on 2009-3-15 at 13:32.]