English — Forum #723 (Page 400/642)

1. The pipelines in the workshop are connected using threads, and air leakage can be observed at many of the threaded couplings. What’s causing this, and how should it be addressed? - HCBBS Forum
2. What is the relationship between additive dosage and slurry viscosity? - HCBBS Forum
3. It has its own light source, making it the brightest star in the night sky - HCBBS Forum
4. Anti-freezing measures for low-load air cooling of the device - HCBBS Forum
5. Choosing a refrigerant is a bit tricky. . - HCBBS Forum
6. Promotion of the Stars Scatter Wealth campaign - HCBBS Forum
7. The dissolved oxygen level in the AO tank doesn’t increase; it stays around 0.2. What’s the use of aeration? - HCBBS Forum
8. s7-200 simulation software - HCBBS Forum
9. Radar level gauge error adjustment - HCBBS Forum
10. Regarding the sequential recording of SOEs in the dark horse SIS, what are the principles for recording and what is the content of the recordings? - HCBBS Forum
11. Reasons for oil presence in the expander/recompressor casing - HCBBS Forum
12. Why is a primary sedimentation tank generally not installed at the beginning in the AB process? - HCBBS Forum
13. LNG station issues - HCBBS Forum
14. Hebei Xinhai Chemical Group - HCBBS Forum
15. [Petroleum Activities] Gratitude Story—My Relationship with My Master: A Prize-Winning Contest (Reply for +50 Wealth) - HCBBS Forum
16. 【Joint Study*】【Civil Engineering Version 20160107】 - HCBBS Forum
17. 【Daily Question】January 4, 2016: Participation +2 Wealth； +3 to 8 wealth for correct answers - HCBBS Forum
18. Common playing techniques for artificial overtones - HCBBS Forum
19. Regarding the relationship between STEP7 DB blocks and WCC DB blocks - HCBBS Forum
20. 【Daily Question】1.10 Short-answer question: How to adjust low yields of vacuum distillate oil? - HCBBS Forum
21. Register Chemical Rep** - HCBBS Forum
22. 【Picture of the Day】2016 1.8 What is the device in this picture? Does anyone know? - HCBBS Forum
23. 【Joint Study*】【Civil Engineering Version 20160104】 - HCBBS Forum
24. Attention compressors, energy-saving solutions, and maintenance services providers - HCBBS Forum
25. Pipeline grading assistance requested - HCBBS Forum
26. Requesting help from experts to upload the English version of Version 3 of API 521 - HCBBS Forum
27. How is the water injection volume for coking calculated? - HCBBS Forum
28. What kind of furniture can improve our quality of life the most? - HCBBS Forum
29. Save images to the album, a new forum feature? Why is there a parameter error? - HCBBS Forum
30. Oil turbidity - HCBBS Forum
31. On the automatic control of cooling tower exhaust fans - HCBBS Forum
32. How to count the number of bolts and nuts in a report? - HCBBS Forum
33. Simulated intake device for compressors - HCBBS Forum
34. Seek process for cleaning tank trucks to eliminate unpleasant odors - HCBBS Forum
35. What are some good ways to address dripping and seepage from the loading arm on refined oil products? - HCBBS Forum
36. 【Daily Question】January 1, 2016 – Happy New Year! Red envelope rush! - HCBBS Forum
37. After installing dual safety valves, is it still necessary to add a bypass line? - HCBBS Forum
38. Steam pipeline - HCBBS Forum
39. Selection of dimensions for pipe support embedments - HCBBS Forum
40. One question per day; those who answer correctly receive 6 wealth points, while participants receive 2 wealth points； Question 408 - HCBBS Forum
41. Does the catalyst need to be preheated before use? - HCBBS Forum
42. How to determine if there is a leak in the convection section of a pyrolyzer - HCBBS Forum
43. 20160109 One question per day - HCBBS Forum
44. The difference between anionic and cationic flocculants lies in their performance - HCBBS Forum
45. Can wooden sleepers still be used for dedicated lines nowadays? Are there any mandatory requirements? - HCBBS Forum
46. One question per day; those who answer correctly receive 6 wealth points, while participants receive 2 wealth points； Question 405 - HCBBS Forum
47. The stars have come to spread wealth! - HCBBS Forum
48. Discussion on the components at the vacuum pump inlet - HCBBS Forum
49. Why does the wastewater discharged from the hospital’s disinfection tank appear black like oil after disinfection, even though the residual chlorine level is within the acceptable range? - HCBBS Forum
50. What is learned in a chemical plant? - HCBBS Forum
51. Sign-in record post for January 1, 2016 - HCBBS Forum
52. January 4–10, 2016 – Boiler Weekly Question: Multiple-choice Question - HCBBS Forum
53. Reliability, Availability, and Maintainability (RAM) training courses for oil and gas, refining, and petrochemical industries - HCBBS Forum
54. Propane-propylene separation tower simulation - HCBBS Forum
55. Piping stress - HCBBS Forum
56. Help, can’t get rid of the sludge? - HCBBS Forum
57. Principles for instrument numbering in PID - HCBBS Forum
58. Sign-in record post from January 6, 2016 - HCBBS Forum
59. Calculation of NPSHa for gear pumps and screw pumps - HCBBS Forum
60. Regarding the start-up purge - HCBBS Forum
61. 【Daily Question】12.29 Multiple-choice question: The device must undergo a pressure test before starting operation and feeding, in order to conduct a comprehensive inspection of the entire system. - HCBBS Forum
62. 【Daily Question】2016 1.7 Multiple-choice question: Nitrogen purging must be carried out before driving in order to remove ( ) from the system. - HCBBS Forum
63. Is it necessary for the production departments of petrochemical enterprises to provide department-specific safety training to construction workers entering their premises? - HCBBS Forum
64. Floc formation in the sulfur trioxide evaporator of the nicotinic acid section in the pyrite-sulfuric acid system - HCBBS Forum
65. Sign-in record post from January 9, 2016 - HCBBS Forum
66. Please discuss in depth the impact of burner pressure difference on the flow field inside the gasification furnace - HCBBS Forum
67. Relationship between ion membrane alkali production concentration and brine concentration entering the cell - HCBBS Forum
68. Is the backup gas boiler in cold standby or hot standby? - HCBBS Forum
69. Does the performance of the heat exchanger anti-corrosion coating change after maintenance, cleaning, and purging? - HCBBS Forum
70. 【Daily Question】2016 1.6 Multiple-choice question Before putting a heat exchanger into use, it is necessary to carry out ( ), and it must pass the inspection. - HCBBS Forum
71. I want to get better at technology - HCBBS Forum
72. Dust check valve - HCBBS Forum
73. What is the professional translation for crane apron? - HCBBS Forum
74. What to do if the water in the biochemical tank of a printing and dyeing factory turns red? What causes it - HCBBS Forum
75. 【Daily Topic】【Storage & Transportation Edition 20160111】 - HCBBS Forum
76. Shanghai, Chemical Process Engineer with 15 years of experience; seeking part-time work in my free time - HCBBS Forum
77. 【Daily Topic】【Live Version 20151228】 - HCBBS Forum
78. How is the Reynolds number on the air side of a finned heat exchanger calculated? - HCBBS Forum
79. Sulfuric Acid Analysis Report - HCBBS Forum
80. 【Joint Study*】【HVAC Version 20160105】 - HCBBS Forum
81. I plan to resign soon. Do I need to go through the process of renewing my company’s design qualification? - HCBBS Forum
82. 【Daily Topic】【Electrical Edition 20160104】 - HCBBS Forum
83. Haichuan Thanksgiving Season: My Masters 【Shihua 004】 - HCBBS Forum
84. Talk about the operation of the mixed acid mixer in the dry absorption process - HCBBS Forum
85. 【Daily Question】January 11, 2016 – Boiler Basics True/False Questions (Top 50 responders receive +3 wealth points; those who get it right earn an additional +3 to +8 wealth points) - HCBBS Forum
86. Issues regarding the application for qualifications for LNG skid-mounted equipment - HCBBS Forum
87. Is it technically feasible to lower the extraction temperature of the third-stage oil to produce light diesel? Which other teacher can explain it from the principles... - HCBBS Forum
88. Methanol to hydrogen: methanol and water feed conditions - HCBBS Forum
89. Judge whether there is a prize - HCBBS Forum
90. 【Daily Question】Jan 3, 2016: Participation +2 Wealth； +3 to 8 wealth for correct answers - HCBBS Forum
91. Progress of Huayi Energy’s Qinzhou project - HCBBS Forum
92. Do the instruments purchased need to be calibrated before leaving the factory? - HCBBS Forum
93. 【Daily Question】January 9, 2016: Boiler Basics True/False Questions (Top 50 responders receive +3 Wealth points; those who get it right receive an additional +3–8 Wealth points) - HCBBS Forum
94. Homemade excavator toy - HCBBS Forum
95. 【Daily Topic】【Electrical Edition 20151230】 - HCBBS Forum
96. Let me talk about the quality of oil products in China as well - HCBBS Forum
97. What’s your opinion on the system of having staff accompany students in the school cafeteria? - HCBBS Forum
98. 【Daily Topic】【Electrical Edition 20160107】 - HCBBS Forum
99. Function of the coupling positioning plate in reciprocating compressors - HCBBS Forum
100. The star has money to spend - HCBBS Forum