【Daily Question】【Static Equipment AC Version...Question 23】December 8, 2018 – True/False Multiple Choice....Enter to win a prize

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This post was last edited by kareale88 on 2018-12-8 08:52. 1.jpg【Daily Question】【AC Equipment Version...Question 23】 December 8, 2018: True/False multiple-choice question...... Please enter the answers (multiple choice, single choice, single choice) in order. Reward rules: 1 wealth for participation, 3 wealth for each correct answer, up to a maximum of 10 wealth. This topic is valid for two days; no scoring will be given if it exceeds two days by 48 hours. At the start of this question, sea friends can recommend answers; those of high quality will be rewarded, and the best answers will be highlighted. 1. The feeding control of pressure vessels mainly refers to the control of ( ) and so on. A. Feeding amount and feeding speed B. Material ratio C. Feeding sequence D. Moisture content 2. After an accident occurs in a pressure vessel, the personnel present at the accident site should ( ) report it to the person in charge of the unit. A. As soon as possible B. In a short time C. Immediately 3. During the pressure testing of pressure vessels, it is generally not advisable to use continuous pressurization to maintain the test pressure constant. ( ) A. Correct B. Incorrect Answer: 1. A B C 2. C 3. B (The word “generally” is extra.) Under what circumstances can pressure vessels be tested using gas? Generally, pressure vessels are not allowed to use gas as a medium for pressure testing; however, for those vessels that cannot be safely filled with liquid due to structural or supporting reasons, or where the operating conditions do not permit the retention of test liquid, gas testing may be used in accordance with the specifications provided in the design drawings. If the container’s volume is too large, it cannot withstand the weight of water ； Or the casing is not suitable for media containing chloride ions, and the water used for the hydrostatic test contains a high amount of chloride ions ； Furthermore, in extreme cold, the liquid inside the container may freeze and cause the container to burst. It can be seen that pneumatic testing is conditional, and the main reason is that it is more dangerous than hydraulic testing.