Tanker Cargo Loading & Discharge Hydraulic Tool Pump Rate, Manifold Pressure, Line Loss & Transfer Time
Loading Pressure • Discharge Operating Point • Darcy-Weisbach • Cargo Viscosity • Parallel Pumps • NPSH • Manifold Limit • Pressure Surge • Transfer Time
Tanker Cargo Loading & Discharge Hydraulic Tool Pump Rate, Manifold Pressure, Line Loss & Transfer Time
Model the cargo-transfer path instead of assuming nameplate pump rate equals actual transfer rate. Simple mode checks a nominated loading or discharge rate against ship/terminal pressure and line losses. Advanced solves the live pump/system operating point for discharge, achievable loading rate from available manifold pressure, NPSH, pump power, pressure surge, pipe design-pressure margin and a full segment-by-segment hydraulic ledger.
↑
Need actual pump/system intersection, NPSH, multiple pipe sections or surge screening? Click Advanced above.Simple evaluates one equivalent ship-side cargo route at the nominated transfer rate. Limits are user-entered because ship/terminal transfer limits are operation-specific.HydraulicsVelocity & line loss
PressureManifold / pump margin
ScheduleTransfer time
Transfer Basis
m³.
kg/m³ at transfer condition.
cSt.
m³/h.
Equivalent Ship-Side Route
mm.
m.
m. Positive if manifold is above cargo liquid surface.
bar(g).
Ship / Terminal Pressure
m of cargo head.
bar(g).
bar(g), ship/terminal agreed limit.
Operation & Cargo
m³/h.
cSt. Used for line Reynolds/friction.
kPa absolute, for NPSH screen.
kPa absolute.
bar(g).
m, discharge/NPSH only.
m.
Ship / Terminal Limits
bar(g), discharge.
bar(g), loading.
bar(g).
bar(g), approved design value.
bar(g); enter 0 if no applicable device governs the pump-discharge design-pressure basis.
m/s. 0 disables this user-defined screen.
Ship Cargo Pump Model
m³/h.
m cargo.
m cargo.
m³/h, last trusted point on entered curve.
m cargo.
% of curve reference speed. Affinity-law scaling.
%.
m cargo. Enter from maker data near the expected operating point.
Hydraulic Route Segment Register
Build one limiting serial hydraulic path between cargo tank and ship manifold. For discharge, mark suction-side segments so they are included in the NPSH calculation. All active rows carry the full modeled path flow.
| Use | Location | Length m | ID mm | Roughness mm | Minor K |
|---|
Pressure-Surge Screen
m/s. Use system-specific value if known.
s.
% of maximum modeled route velocity.
Cargo Transfer Checks
Operational boundary: use the actual agreed ship/terminal maximum transfer rates, topping-off rates, manifold pressure limits and stop/ESD protocols. This tool does not establish a universal “safe” cargo velocity or pressure. It models steady-state hydraulics and an approximate linear-closure water-hammer screen only; detailed transient analysis is required where damaging pressure surge is credible.