Tag
#pumps
3 topics across all disciplines.
Nozzle loads and allowables — the constraint that really governs hot piping
Why machine nozzle allowables are so small, where they come from for pumps, compressors, turbines and vessels, what exceeding them actually does, why the symptom surfaces in somebody else's report, and the design and field rules that prevent it.
Pump piping layout — the suction side is where the decisions are made
NPSH available as a consequence of layout rather than a number handed to you. Eccentric reducers and the pocket they prevent, straight run before the impeller, the elbow that must not be in the shaft plane, parallel pump symmetry, strainers, minimum flow, and the discharge order.
Pumps — head, NPSH and why cavitation is a suction problem
Centrifugal versus positive displacement, what a pump curve tells you, why NPSH decides whether a pump survives, and why most pump failures are really piping failures.