[Daily question] [Static Equipment Exchange Edition...Question 24] Multiple choice question on December 9, 2018...Participation will win prizes

Thread Content

This post was last edited by kareale88 on 2018-12-9 14:20 0240550093.jpg [Daily question] [Static Equipment Exchange Edition...Question 24] Multiple choice question on December 9, 2018... Please fill in the answers (multiple choice, single choice, single choice) in order. Bonus rules: Participation will reward 1 wealth, and correct answers will reward 3 wealth for each item, with a maximum of 10 wealth. This topic is valid for two days and will not be graded for more than two days and 48 hours. At the beginning of this question, friends can recommend [Weekly Topics] and participate in the following two [Weekly Topics] links. 1. The main causes of fatigue damage of pressure vessels are: ( ) A. Frequent vibration of the pressure vessel B. Frequent pressure fluctuations and frequent rises and falls C. Too fast starting and stopping speeds 2. The construction unit shall hand over the relevant information to the user unit within ( ) days after completion of the maintenance or modification data of the pressure vessel and store it in the container file. A, 10 B, 20 C, 30 3. Periodic inspection of pressure vessels refers to the comprehensive inspection and pressure test performed after the pressure vessel is out of service. () A. Correct B. Wrong answer 1. ABC 2. C 3. B Periodic inspection of pressure vessels includes external inspection, internal and external inspection and pressure test ； External inspection can be carried out during the operation of the pressure vessel. The inspection content includes: Cracks, overheating, deformation, leakage, etc. in the body, interface parts, and welded joints of the pressure vessel. Liquid leakage and gas leakage from leak detection holes and signal holes. ； Unblock the leak detection pipe ； Abnormal vibrations, noises, and mutual friction between the pressure vessel of the discharge (drainage, sewage) device and adjacent pipes or components. Carry out safety accessories to check for damage to supports or supports, foundation sinking, tilting, cracking, and the integrity of fasteners. Stability of operation ； The internal and external inspection of the monitoring status of pressure vessels with a safety level of 4 is carried out when the pressure vessel is out of service. The inspection contents include:: All items of external inspection are structural inspection. The key inspection parts are:: The geometric dimensions of the connection between the cylinder and the head, openings, welds, heads, supports or supports, flanges, and sewage outlets. If there is data to confirm the geometric dimensions of the container, generally check its main dimensions. For geometric dimensions that may change during operation, such as the out-of-roundness of the cylinder, bulging deformation of the head and the simplified body, etc., surface defects should be reviewed with emphasis. The main ones are: Corrosion and mechanical damage, surface cracks, weld undercut, deformation, etc. Surface defects should be carefully inspected and measured for wall thickness measurement. The measurement location should be representative and have sufficient measurement points. Determine whether the material of the main pressure components has deteriorated. Insulation layer, surfacing layer, metal lining The intact condition of the weld, the inspection of buried defects, the safety accessories, the inspection of fasteners, and the pressure test are the hydraulic tests or air pressure tests that exceed the maximum working pressure when the pressure vessel is shut down for inspection. The pressure test should comply with the relevant provisions of the "Pressure Vessel Safety Technical Supervision Regulations". Generally speaking, comprehensive testing is done after obtaining the testing certificate when leaving the factory. * * The specified compulsory testing unit conducts testing and issues certificates. The annual inspection is just a routine inspection of the pressure vessel operation every year, and it must also have a * * The relevant certification body cannot test and issue a test certificate. The daily question will be transformed into a weekly topic. If you collect weekly topics, you will be rewarded with Haichuan coins. https://bbs.hcbbs.com/thread-2192586-1-1.html (Source: Haichuan Chemical Forum Network) [Weekly Topic] [Static Equipment Exchange Edition... Question 1] December 8-16, 2018... Discussion on Welding Deformation - Haichuan Coin Rewards https://bbs.hcbbs.com/thread-2192846-1-1.html (Source: Haichuan Chemical Forum Network)