【Weekly 3 Questions, Question 21】2017.09.26
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By replying to this post, you can see the answer from the previous issue. (Single-choice question) Which of the following expressions is correct? ( ) A. P_gauge = P_absolute – P_atmospheric B. P_absolute = P_gauge + P_atmospheric C. P_gauge = P_absolute + P_atmospheric D. P_absolute = P_gauge – P_atmospheric The correct answer is B. This issue’s question is as follows: (Fill-in-the-blank question) For a pipeline carrying gas, if there is suspicion of a leak, what is the most commonly used method for leak testing? —————————————————————————————————————————————————————————————— Scoring criteria: 2 Wealth points for incorrect attempts; 3–6 points for *incomplete* answers; 8 Wealth points for correct answers with detailed explanations; 10–15 Wealth points for correct answers with additional *insufficient* explanations. Please score according to these criteria. Note: If there are editing records after answering, only those who participated will be given points. For continuous malicious spamming, 2 points will be deducted each time, with no upper limit. Pure numbers, pure emojis, or random letters unrelated to the answer are all considered malicious spamming; points will start to be deducted after three warnings
Use your hand to approach the leak site to feel if any air is escaping; in cases of air leakage, the instrument air ducts may turn black
For positive pressure, soap bubbles are used, while for negative pressure, pressure retention testing is employed.
If the medium being tested is a gas in a pipeline and there is suspicion of a leak, what is the most common method we use for detecting leaks? We use soapy water to check for leaks