[Phase 1 of Time-Limited Quick Response Contest] 064 [Completed]

Thread Content

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. One “*” represents 1 Chinese character (or 1 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 for the process and piping fields ； 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: 064. For towers, containers, etc. that are installed outdoors within process facilities, when (************), it is not necessary to install lightning rods for protection; however, a lightning protection grounding system must be provided. Standard answer: The thickness of the top sheet should be 4 mm or greater. Winner: Wei Xiaobao. This post was last edited by hutom123 on 2009-3-28 at 20:09.]