Could the experienced workers please explain the sequence of steps for getting a new installation up and running? There’s no consistency on this in the forums
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Could the experienced workers please explain the sequence of steps for getting a new installation up and running? There’s no consistency on this in the forum. A new facility is being put into operation. What is the correct sequence in which the construction party carries out tasks such as water pressure testing, settlement testing, water flushing, water operation testing, purging, pressure testing, airtightness testing, and replacement? My understanding is: 1. The contractor uses water for pressure testing, 2. settlement pressure testing, 3. water flushing, 4. cleaning with steam or industrial air, 5. pressure testing again, 6. airtightness check, 7. water operation test, 8. flushing with water after draining it, 9. nitrogen purging, 10. feeding material. Is this correct? I would be extremely grateful for the guidance from all the experienced masters! !
It’s not repeated, right? The first step is for the contractor to perform a pressure test using water after installing the equipment, at a time when the other pipelines, equipment, and flanges have not yet been connected. Article 5 states that pressure testing should be carried out only after all the connections have been made, to check for any leaks in the flanges, instruments, and other components. I haven’t written any plans; I just thought of everything on my own. I’m not sure if it’s correct
Yes, there are no specific requirements regarding the process; it depends on your requirements for the pipeline. Pressure testing to check for leaks is necessary, and whether it should be a hydrostatic test or some other form of testing depends on the requirements of the materials that will be used in the pipeline later on. Ultimately, as long as it meets your usage requirements, that’s fine.
1. Complete the mechanical installation, and check the equipment and pipelines for any visible defects, such as missing bolts or nuts. 2. Purge the pipelines by disconnecting their ends and lowest points, then cover them with cloth until all slag is removed. 3. Conduct a single-unit test of the equipment: check the direction of rotation by operating the motor in intermittent mode, and manually rotate the drive shaft. 4. Isolate the system and perform hydraulic tests on each sub-system; pure water should be used for these tests. 5. During this phase, settlement tests are carried out – these are usually not done by the owner but by the construction party. 6. Drain half of the water, then carry out a water operation test. 7. Completely drain the water, purge the pipelines, and dry them; disconnect the ends or lowest points of the pipelines and cover them with cloth to check for any remaining water. 7. Isolate the system, pressurize it gradually, conduct a gas-tightness test, perform pressure drop correction using a pressure gauge and thermometer, and check for leaks with soapy water. 8. Nitrogen replacement: the vacuum + nitrogen supplementation method is more economical and saves nitrogen. At the same time, the required number of replacement cycles and the amount of nitrogen consumed are calculated based on the initial oxygen content of 21% and the target oxygen content; the oxygen content in the nitrogen is taken into account in the correction calculations using the value provided by the gas supply source. 9. For the combined transportation of materials, it is best to introduce the products, have them go through a processing step in the main stages for rinsing, and then dispose of them as waste. 10. After the system is started up and heated, assign personnel to thermally tighten the bolts and nuts.
Very detailed! Thank you so much! You helped me solve a big problem! ! :handshake