English — Forum #723 (Page 430/642)

1. 【Daily Question】Question from the 20151125 issue - HCBBS Forum
2. I would like to ask about the surge problem in the circulation machine - HCBBS Forum
3. Operations Team salaries for November 2015 - HCBBS Forum
4. Study on valve stem fracture - HCBBS Forum
5. 【Daily Question】12.1 What instruments are used to measure the liquid level in oil refining units? - HCBBS Forum
6. What is the basic content of behavioral science? - HCBBS Forum
7. Separation module - HCBBS Forum
8. What are the advantages of using frequency conversion control for metering pumps? - HCBBS Forum
9. Yantai Wanhua Methyl Methacrylate Plant - HCBBS Forum
10. Do double-acting pneumatic valves come in air-open and air-close types? - HCBBS Forum
11. 【Daily Question】11.30 What instruments are used to measure flow rate in chemical production plants? ( - HCBBS Forum
12. 20151204 One question per day - HCBBS Forum
13. Situations where horizontal containers require external reinforcing rings despite no external pressure - HCBBS Forum
14. One question per day; those who answer correctly receive 6 wealth points, while participants receive 2 wealth points； Question 376 - HCBBS Forum
15. 20151202 One question per day - HCBBS Forum
16. The precision filters used for on-site wastewater treatment keep getting clogged, resulting in a short operating cycle – are there any good solutions? - HCBBS Forum
17. Joint Learning*1204: +2 wealth for participation, +9 wealth for correct answers - HCBBS Forum
18. 【Daily Question】12.4 Short-answer question: What is the antioxidant stability of oils? - HCBBS Forum
19. Newbie seeking advice - HCBBS Forum
20. When strength welding is combined with expansion fitting, how should the heat treatment timing for the heat exchange tubes be determined? - HCBBS Forum
21. The company is planning to obtain an A2 certificate; seeking advice from all fellow sailors - HCBBS Forum
22. 【Daily Question】Question from Issue 20151204 - HCBBS Forum
23. Aspen isn’t working properly; I need help - HCBBS Forum
24. For high-temperature steam, what type of flow meter is suitable, or in other words, which one offers the best cost-performance ratio? - HCBBS Forum
25. 【Daily Question】 December 3rd: Which of the following options is not a criterion for selecting a cascade control system? - HCBBS Forum
26. Winter anti-freezing and anti-slip measures - HCBBS Forum
27. The upper and lower towers are arranged in parallel - HCBBS Forum
28. The Australian standard specifications for pipelines are also available - HCBBS Forum
29. What is a hazardous area prone to explosions? - HCBBS Forum
30. Hazard** Safety Data Sheet - HCBBS Forum
31. Issues related to ammonia nitrogen testing - HCBBS Forum
32. 20151126 One question per day - HCBBS Forum
33. How to treat the oil in tar wastewater? - HCBBS Forum
34. Environmental Protection Daily Question 11.29: Participate for a prize; 3 correct answers earn an additional reward - HCBBS Forum
35. Pilot-operated safety valve for MTO unit - HCBBS Forum
36. GPS-based inspection system for chemical plant equipment inspections - HCBBS Forum
37. 【Daily Question】Question from Issue 20151204 - HCBBS Forum
38. What are the safety requirements for the packaging and transportation of methanol products? - HCBBS Forum
39. 【Daily Question】Dec 4, 2015: Participation +2 Wealth； +3 to 8 wealth for correct answers - HCBBS Forum
40. Regarding the on/off operation of electric ball valves - HCBBS Forum
41. EDR calculates the vaporization rate of the thermosyphon reboiler as a function of static head - HCBBS Forum
42. Production preparation plan for converting coke oven gas into LNG - HCBBS Forum
43. Problems with chemical dosing pumps - HCBBS Forum
44. ★Specialized Examination for Chemical Engineering ★ — One question per day (2015-11-27) — Points are awarded for participation - HCBBS Forum
45. How does a turbine flow meter work? - HCBBS Forum
46. Product welding test pieces - HCBBS Forum
47. Metallurgical Engineering – Specialization: Non-ferrous metal smelting; Control of oxygen-enriched side-blown furnaces - HCBBS Forum
48. Issues regarding flange connections, flange selection, as well as the connection and welding processes - HCBBS Forum
49. What is high-pressure jet cleaning technology? - HCBBS Forum
50. How to make smart use of UPS batteries? - HCBBS Forum
51. How is the PSA yield of a hydrogen production plant calculated? ? - HCBBS Forum
52. Problems with insulation materials and cooling materials - HCBBS Forum
53. How to choose a power adapter for a laptop? - HCBBS Forum
54. What are the world-renowned manufacturers of gauge pressure oils? Which oils can be used as instrument oil - HCBBS Forum
55. 【Daily Question】11.27 Multiple-choice question The main cause of leakage is ( ) - HCBBS Forum
56. 2016 Registration Safety Engineer Exam Date - HCBBS Forum
57. Selection of condenser for vacuum distillation - HCBBS Forum
58. Ignition of the combustion furnace - HCBBS Forum
59. The relationship between the process engineering major and other majors - HCBBS Forum
60. Does a decrease in current of the centrifugal exhaust fan affect the air volume? - HCBBS Forum
61. One question per day; those who answer correctly receive 6 wealth points, while participants receive 2 wealth points； Question 377 - HCBBS Forum
62. Natural circulation and forced circulation evaporators - HCBBS Forum
63. Can several drain pipes from steam traps be connected to a single main pipe? - HCBBS Forum
64. Protection of internal floating roof tanks during pipeline cleaning - HCBBS Forum
65. What are the tolerance requirements for the installation of floating valves in a floating valve tower? - HCBBS Forum
66. This one seems really amazing - HCBBS Forum
67. Womin Technology - HCBBS Forum
68. How to calculate flow rate for pressure pipelines - HCBBS Forum
69. Subcontracting design qualifications - HCBBS Forum
70. Regarding fan vibration issues - HCBBS Forum
71. Signal generator - HCBBS Forum
72. Urgently need data on dew point meters - HCBBS Forum
73. I have a question regarding the use of gas-fired heat transfer oil furnaces to heat reaction vessels - HCBBS Forum
74. Heat treatment issues of nickel-steel clad plate containers - HCBBS Forum
75. Air compressor selection - HCBBS Forum
76. December, the month when the results for the first-level construction qualification exam are released - HCBBS Forum
77. Is the forum search function not working properly? - HCBBS Forum
78. Discussion on gasified coal gas lock cabinets - HCBBS Forum
79. Balanced flow meter - HCBBS Forum
80. On the PID diagram of the tank farm, the pipe connections are labeled as “power rack” – what does this mean? - HCBBS Forum
81. Gas entrained with washing oil blocks the gas pipeline - HCBBS Forum
82. What are the characteristics of manufacturing multi-layer coiled sheet containers? - HCBBS Forum
83. Comparison and applications of submersible pumps and external tank pumps - HCBBS Forum
84. Environmental Protection Daily Quiz: November 25 – Participate for prizes; 3 correct answers and you’ll get another 3 as a reward - HCBBS Forum
85. If someone copies answers on the safety training exam for new employees, and the training duration is less than 72 hours, who should be held responsible in case an accident occurs due to inadequate training? - HCBBS Forum
86. What tasks are required for the initial commissioning of a water gasification unit? - HCBBS Forum
87. How to identify carbonate scale? - HCBBS Forum
88. Safety technical requirements for oxygen emission and liquid oxygen emission - HCBBS Forum
89. “It’s increasingly difficult for poor families to produce outstanding children” - HCBBS Forum
90. 【Daily Question】Question from Issue 20151202 - HCBBS Forum
91. Alumina balls - HCBBS Forum
92. What is a boiler equipped with a superheater? - HCBBS Forum
93. One question per day; those who answer correctly receive 6 wealth points, while participants receive 2 wealth points； Question 372 - HCBBS Forum
94. How is the heating chamber separated from the boiling chamber in an evaporator - HCBBS Forum
95. May I ask where in Haichuan is there a dedicated asphalt section? - HCBBS Forum
96. What precautions should be taken regarding the level gauge before and after starting up and shutting down the synthesis tower? - HCBBS Forum
97. Is it okay if the motor junction box has a ground wire but the body of the motor is not grounded? - HCBBS Forum
98. Cost of water-coal slurry boilers - HCBBS Forum
99. Why do false values appear after the instruments are serviced? - HCBBS Forum
100. What is petroleum asphalt used for? - HCBBS Forum