[Phase 1 of Time-Limited Quick Response Contest] 003 [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 replies on floor 2 and 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: 003. The design of the safety valve outlet pipe should take into account that the back pressure should not exceed a certain value of the safety valve’s set pressure. For spring-loaded safety valves, in the standard type, the back pressure does not exceed (**)% of the set pressure of the safety valve. Standard answer: 10. Winner: Yang Zhanhui. This post was last edited by hutom123 on 2009-3-25 09:16.]