I am interested in knowing how much maximum flow is allowed through 6'' nozzle of 25000 Ton ammonia tank. For piping normal velocity in CS is 3 m/s, and NORSOK standard even allows 6 m/s.
Will it be okay if I select velocity of 4.5 m/s for intermittent service. The head loss is around 0.03 bar, calculated for 0.5 v2/2g.
Pls guid is this right apporach or some other considerations are more critical, considering intermittent service.