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The last edit to this post was made by Shutong on 2010-12-24 at 16:30. Based on the characteristics of each pressure pipeline, the identification of certain weak points, hazardous areas, typical points where instability may occur under thermal conditions (such as creep, fatigue, etc.), key areas for corrosion inspection, key areas for non-destructive testing, and other points that require special attention is referred to as (). A. Documentation identifier B. Standard identifier C. Special identifier D. Essential identifier. Pipeline identifiers can be divided into two main categories: standard identifiers and special identifiers. Special markings are applied based on the characteristics of each pressure pipeline; they identify certain weak points, hazardous areas, typical points where the pipeline may become unstable under thermal conditions (such as due to creep or fatigue), key areas for corrosion inspection, key areas for non-destructive testing, and other points that require special attention during inspections. When selecting the aforementioned typical points, priority should be given to the following locations on pressure pipelines: spring support and hanger points, points with significant displacement, areas suffering from severe corrosion, points where coupon corrosion tests are required, typical points on vibrating pipelines, high-pressure flange joints, the elevation of foundations for heavy equipment, and any other points that are deemed necessary to be marked and recorded. Notes on daily topics in the Quality Area: 1) All participants must receive a reward: 5–20 points for the topic-related post of each day, or more as appropriate. For multiple-choice questions, scores are assigned based on the order of responses: 2nd floor: 10 points, 3rd floor: 9 points, 4th floor: 8 points, 5th floor: 7 points, 6th floor: 6 points; 5 points or more for floors 7 and above. No score is given for incorrect answers. Doubling of detailed descriptions and sources is available. No scoring will be given for replies on the second day. 2) Please hide your replies; the method for doing this is: http://bbs.hcbbs.com/thread-492556-1-1.html 3) Do not edit your replies after posting them, as replies that are edited will not be scored. 4) Due to the busy work of moderators, they can move posts down on the following day. 5) Please ask the moderators in the Quality section to post actively and provide ratings promptly, especially for topic posts that were not posted by them themselves – the ratings should be given in a timely manner. I would like to remind all moderators to mark processed posts as \"read\" to avoid redundant work. P; 9. Spamming posts should not be encouraged; the moderators should merely issue reminders. Points can be deducted, warnings given, and posts deleted in cases of malicious spamming. These are the key measures used in quality-focused areas to encourage the posting of legitimate content. 6) Members are welcome to propose daily topics. These topics should be rich in content and not be limited to multiple-choice questions; more discussion-based content and Q&A posts should be included to encourage participation from other users.