Questions about dual power supply of fire pump
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Please tell me: At present, the factory's fire protection system is equipped with an electric main pump and a diesel backup pump. The two pumps are mutually backup, with the same power and flow rate. The other two voltage stabilizing pumps are used to replenish water in the system. According to GB50052-2009 regulations, the fire pump belongs to level 1 load and needs to be equipped with dual power supplies. The two voltage-stabilizing pumps are equipped with mains and diesel power supplies, but my question is whether the electric main pump also needs dual power supplies? Because in the event of an accident, the electric main pump first supplies fire-fighting water. If the electric main pump loses power, the diesel main pump supplies fire-fighting water.
1. GB50052 does not specify the electrical load level of fire pumps. The factory (fire) safety design editor should explain it.； 2. The factory has installed a diesel fire pump, and the reference standard should be GB50160-2014 (2018 edition) ； 3. If it is required to configure dual power supplies even when a diesel fire pump and emergency power supply are configured, please check the design documents to determine whether the electrical load of the main fire pump is judged to be a particularly important load in the primary load.
GB50160-2014 (2018 edition) 8.3.8 Fire water pumps should be equipped with dual power sources； ……. The fire water pump should be equipped with dual power sources, which means that the power supply method of the fire water pump should meet the first-level load power supply requirements stipulated in the "Design Code for Power Supply and Distribution Systems" (GB50052). When the primary load power supply requirements cannot be met, a diesel engine should be set as the second power source. It is not appropriate to use diesel engines as fire power sources for all fire pumps.
Hello, I think the fire pump in our factory is one electric and one diesel, which meets dual power sources. According to the requirements of GB50052, it must meet the first-level load power supply requirements, that is, it must have dual power supplies. If our electric pump cannot meet dual power supply, then we are equipped with a diesel engine as a secondary power source. Therefore, what I consider is that our electric pump does not need to be equipped with dual power supplies at present. One power supply is enough. Is this correct?
GB50052-2009 does not clearly stipulate that fire pumps must belong to Level 1 load, which depends on the specific application. Therefore, Article 8.3.8 of GB50160D states that “when the power supply requirements of Level 1 load cannot be met, a diesel engine should be set up as a second power source. ” If your "fire protection system is equipped with one electric main pump and one diesel backup pump, and the two are mutually backup", then the electric main pump does not need to be equipped with a second power supply, which meets the requirements of GB50160.