New phenomena of Pr.drop in fire water network
New phenomena of Pr.drop in fire water network
(OP)
We are in one LPG pumping station of cross country LPG pipeline system.
We have fire water network ( length of the pipeline is < 2 km). Water is pressurised(8.5 Kg/cm2) by 2(1+1) Jockey pump(15 m3/hr, 88 m) & 2 DEG pumps(410 m3/hr & 88m). Set point for Jockey is, starts at 7.5 and stops at 8.5 kg/cm2. Nowadays we are observing one different phenomena, During day time (from 8 am to 6 pm) water pr is more than 8.5 kg/cm2, used to be 11 kg/cm2. from 6 pm to 8 am , pr drops from 8.5 to 7.5 within 40 min. so jockey starts for every 40 min to maintain the pr.
Why this is happening...?
how to prevent jockey frequently running...?
We have fire water network ( length of the pipeline is < 2 km). Water is pressurised(8.5 Kg/cm2) by 2(1+1) Jockey pump(15 m3/hr, 88 m) & 2 DEG pumps(410 m3/hr & 88m). Set point for Jockey is, starts at 7.5 and stops at 8.5 kg/cm2. Nowadays we are observing one different phenomena, During day time (from 8 am to 6 pm) water pr is more than 8.5 kg/cm2, used to be 11 kg/cm2. from 6 pm to 8 am , pr drops from 8.5 to 7.5 within 40 min. so jockey starts for every 40 min to maintain the pr.
Why this is happening...?
how to prevent jockey frequently running...?





RE: New phenomena of Pr.drop in fire water network
We are more connected to everyone in the world than we've ever been before, except to the person sitting next to us. Lisa Gansky
RE: New phenomena of Pr.drop in fire water network
We are more connected to everyone in the world than we've ever been before, except to the person sitting next to us. Lisa Gansky