Why can't sprinkler system and hydrant system share water pump in fire fighting system?

Answer:

Code for design of sprinkler systems, GB, 50084 - 2001 (2005 Edition)The water pump 10. 2.1 systems should be set up independently, and should be a preparation or a preparation will set the standby pump ratio.10., 2.2, according to the two load power supply construction, it is appropriate to use diesel pump as a standby pump.Some of them used to be common pumps, and now the code emphasizes independence.

The design code of sprinkler system GB 50084 - 2001 (2005 Edition) stipulates that the sprinkler system shall be provided with an independent water supply pump, that is, the water pump shall not be shared with the hydrant system. The aim is to ensure the reliability of the water supply and prevent interference.See the code for design of automatic sprinkler system, GB 50084 - 2001 (2005 Edition), 10.2.1 and the corresponding provisions of the following interpretation.

Why not share mainly because the two impurities contained in the water system: fire hydrant system requirements of different impurities in the water spray system requirements loose, but more stringent requirements, therefore, the former can be welded steel pipe, the latter must use galvanized pipe, the purpose is to prevent rust plug flow indicator or end of the spray head.