【Daily Question No. 121】2017.05.01

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【Daily Question No. 121】May 01, 2017: When shutting down towers, tanks, and containers for purging, the pressure gauge ( ). A. Do not disable B. Disable C. It can be disabled or left unchanged. The reference answer will be visible after replying*, and points will be awarded by identifying the key points. (Unless otherwise specified, all questions and answers are based on hydrogenation units.) ) Scoring criteria: 2 Wealth points for incorrect answers; *incomplete* answers earn 3–8 points. 10 Wealth points are given for correct answers accompanied by detailed explanations; answers that are correct but lack sufficient details earn 15–20 Wealth points. Please use these criteria for scoring. 2017 Q&A Summary Thread (updates starting now) http://bbs.hcbbs.com/thread-1657793-1-1.html 2017 Daily Question Summary Thread (updates starting now) http://bbs.hcbbs.com/thread-1657794-1-1.html 2016 Q&A Summary Thread (updates completed) http://bbs.hcbbs.com/thread-1597792-1-1.html Petrochemical Sector – “Creative Ideas for Energy Savings” Campaign (Sponsors sought; highest returns ever) http://bbs.hcbbs.com/thread-1666758-1-1.html Sponsors are being sought for this campaign; those interested may contact the campaign coordinator. Petrochemical deep processing version – the event to share pictures of chemical equipment has started! A vast amount of wealth, along with HCH coins, is waiting for you to claim it: http://bbs.hcbbs.com/thread-1760733-1-1.html. Notice regarding the collection of chemical engineering technical materials in the “Petroleum and Chemicals Section”: http://bbs.hcbbs.com/thread-1614796-1-1.html (Source: HCH Chemicals Forum)