Why is water commissioning required for the new device?
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This post was last edited by linweihua6 on 2011-10-28 07:14. I’m a beginner; I have a humble question – why is water testing necessary for new installations? The densities of water and oil differ greatly, and their operating conditions are also different
It is to expose flaws and problems in the processes and equipment; hydraulic tests are conducted on the equipment’s pipelines to ensure the flow of fluids, the performance of pumps and instruments is evaluated, and technical skills are trained at various positions – this constitutes the training phase. All new devices need to be done this way.
What was said upstairs is quite correct; most new wet systems require water testing, as this allows for the assessment of the equipment’s performance. Moreover, water testing is relatively safe.
The answer above was excellent. Additionally, water circulation can also be used to wash away slag, metal shavings, and other debris that remain in equipment and pipes during the construction process. Identify any leaks, inefficiencies in the processes, or issues with the performance of pumps and instruments, and take prompt action to address them. When it’s clean, it’s easy to work with – working with fire is no problem at all. But if oil gets in, it becomes very difficult to use fire.
For new plants, especially those involved in hazardous production processes such as those in the petroleum and chemical industries, the entire installation is generally tested and inspected using methods such as water testing and hot nitrogen testing before it is put into operation or after major repairs. This is done to assess the reliability of the entire system and to prepare for its official commissioning. Generally, after water purging, if chemical production using a non-water medium is to be carried out, thermal nitrogen purging is required to displace the water remaining in the equipment, with water also being drained from the lowest point of the equipment. Thermal nitrogen-oil combined operation may also be carried out later. Testing is carried out using water or nitrogen; firstly, these media are readily available, and secondly, they pose no danger.
Try the pump, flush the pipeline, and get some practice. Water drains easily, but it can’t be drained after oil is introduced.
What the people upstairs said is correct. Check whether the control valve is working properly, let the pump run to achieve proper running-in, flush out any dirt in the equipment pipelines, and verify that the instruments (for level, flow rate, etc.) are functioning correctly. Address any issues that arise promptly; water is cheaper than oil.
1. To check whether the pipeline welding is satisfactory and whether there are any leaks； 2. It is to familiarize employees with the process, that is, to give them some practice.
The main objectives are pipeline flushing, mechanical pump load testing, and instrument calibration.
Reply 1# LYshihua: During the construction of new installations, debris and metal fragments may remain in the equipment and pipes. Water circulation can remove these substances, thereby preventing pipe blockages and equipment failures during normal operation of the installation； Additionally, water transfer is the use of water instead of oil or other fluids in the process operations, in order to test the integrity of the equipment and ensure smooth operation upon startup.