Is it feasible to raise the pump inlet pipeline?
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The finished product storage area is located on one side of the road, while the pumps and dip pipes are on the other side. Pipes are used to connect to the pump inlets via overhead ducts; is this a viable solution? The clear height of these overhead ducts is 4.5 meters – will this affect the pumping capacity of the pumps? ? Can it be laid in a trench?
This requires analysis taking into account the temperature and type of the fluid being transported, as well as the pump’s required net positive suction head and effective net positive suction head, in order to make a judgment； However, in principle, to prevent cavitation in the pump, its suction pipeline must not have any bag-like areas; if this cannot be avoided, a vent valve should be installed at a high point, provided that the calculated effective net positive suction head is at least 1.2 times the required net positive suction head ； From the external storage tank of the unit to the suction pipe of the pump, in order to prevent the formation of air pockets, the pipe should pass through the fire dike, with the pipe on the pipe support at its lowest position.
Is it appropriate to install gutters along the path with covers on top of those gutters?
Is it appropriate to install gutters along the path with covers on top of those gutters?
It depends on what the process medium you are transporting is. The relevant practices should meet the requirements regarding pipeline layout in Chapter 7 of GB50160. In newly built process installations, the use of ducts and buried pipelines is becoming increasingly rare, as laying pipes overhead is more convenient for construction, routine inspection, and maintenance; in contrast, with ducts and buried pipelines, damage is not easily detected in a timely manner. Currently, the ducts and process pipes laid underground are mainly the inlet pipes of pumps, and safety measures must be taken in accordance with the provisions of 7.2.4. For the comprehensive pipelines within the plant, 7.1.3: Pipelines for flammable gases, liquefied hydrocarbons, and flammable liquids that pass beneath railway lines or roads should be installed within pipe culverts or sleeves. For process and utility pipelines, 7.2.4 Pipelines for flammable gases, liquefied hydrocarbons, and flammable liquids should be installed overhead or laid along the ground. When trench laying is necessary, measures must be taken to prevent the accumulation of combustible gases, liquefied hydrocarbons, and flammable liquids within the trench, and sealed partitions should be installed at the entrances and exits to the equipment and buildings ； The wastewater in the trench should be discharged into the production wastewater pipeline through a water seal well. Trenches at the entrances and exits to the plant buildings and equipment should be properly sealed off in order to prevent the spread of fire as well as the flow of flammable gases or liquids.