[Oil Transport Quiz with Prizes] 52

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This post was last edited by 18 on 2009-8-25 22:09. True or False question. 5 questions per day; 2 wealth points for answering one question correctly, and an additional 10 wealth points if all questions are answered correctly. To prevent some members from copying other members’ answers, please hide your posts when answering questions. For specific methods of concealment, see: http://bbs.hcbbs.com/viewthread.php?tid=492556&highlight=%D2%FE%B2%D8. 101. The pressure value used for the strength testing of long-distance pipelines should be 1.10 times the pipeline’s designed maximum allowable operating pressure. 102. The cleaning of the pipelines between stations in long-distance pipelines is mainly carried out manually. 103. When testing long-distance pipelines by water injection, ball passing, and cleaning, a pressure testing pump is generally used for water injection and ball passing. 104. When water is used as the medium to propel the pig in long-distance pipelines for ball passing and line cleaning, there should be two or more water sources along the entire pipeline. 105. When preheating oil pipelines with hot water, the maximum outlet temperature of the hot water shall not exceed 100°C. Answer: 101. × The pressure value for the strength test of long-distance pipelines should be 1.25 times the pipeline’s design allowable maximum operating pressure. 102. × For long-distance pipeline stations, the cleaning of pipelines is mainly carried out using pigging devices. 103. × When performing water flushing, ball passing, and line cleaning in long-distance pipelines, oil pumps are generally used to convey water for these purposes. 104.√ 105.x When preheating the oil pipeline with hot water, the maximum outlet temperature of the hot water shall not exceed 70°C.