【Newcomer】Emergency Response to Accidents (Pumps—Water Systems)
Thread Content
There are no drain valves before or after the water system pumps (on the pumps themselves), and multiple pumps are connected in parallel. The water pump was modified; the valves at both the inlet and outlet sides of the pump were closed. Testing was carried out yesterday – the water inlet end of the pump was opened slowly, but the flexible connections in the pump failed, and the pipes in the water system were damaged and deformed as a result. May I ask how to properly rehydrate the system to prevent similar problems from occurring again (the system has had many such issues in the past)?
I would like to ask for an analysis of the causes of the accident
Fill the pump chamber with water and release air, then open the inlet valve to start the pump and subsequently open the outlet valve
Is it a soft connection at the inlet? If only the inlet is open while the outlet is closed, what level of static pressure at the inlet will be required to cause a short circuit? Is there any image 1?
The previous image was easy to analyze; it’s still the same question: was the actual operation at that time concealed afterwards, and was the pressure gauge checked?
Is there any issue with the procedure of slowly opening the outlet valve after pressure builds up following startup?
After analyzing it, I think it’s not caused by the pump on the main pipeline. The reason is that the head of the main pipeline pump cannot exceed the design pressure of the pipeline. It can only be a production auxiliary pump; clearly, it is used to increase the pressure of the make-up water, and the high pressure from the make-up water causes the pipelines to burst. The accident can be analyzed as follows: during the water filling and air release of the pipeline, both the inlet and outlet valves of the main pipeline were closed, yet at that time the make-up water pump had already started operating. At this time, the pressure transmitter in front of the pump on the main pipeline was not providing a pressure signal for the make-up water pump, so the make-up water pump continued to generate pressure. At this point, the operator opens the inlet of the main pipeline, as the pressure at this time has already exceeded the operating pressure. Therefore, the soft connections of the pump body break apart, and the pipes in the water system are directly damaged and deformed (in the section of the inlet and outlet valves of the pump on the main pipeline)
What’s going on? Just opening the inlet can cause the hoses and pipes to burst~~