Nozzle Load table in API 610
Nozzle Load table in API 610
(OP)
Hello,
Can anyone tell me how values in Nozzle Load values are calculated in API 610?
Thank You
James
Can anyone tell me how values in Nozzle Load values are calculated in API 610?
Thank You
James





RE: Nozzle Load table in API 610
RE: Nozzle Load table in API 610
I know Annex F, but i would like to figure out how Fx, Fy, Fz, Mx, My, Mz are calculated.
Thank You
RE: Nozzle Load table in API 610
If so that might take a bit of digging, but I know several people on the committee so I'm sure one of them has the answer.
RE: Nozzle Load table in API 610
Do you think there is a way for you to see how they might have decided those values?
Thank You
RE: Nozzle Load table in API 610
RE: Nozzle Load table in API 610
RE: Nozzle Load table in API 610
RE: Nozzle Load table in API 610
These forces are taken into consideration for checking movement of the entire assembly when load is put on,Movement of the feet of the casing relative to the baseplate due to the friction force between the two,movement of the bearing housing relative to the base plate,Internal movements causing rubbing of the impeller against the casing,movement of the base plate surface relative to the driver shaft.
RE: Nozzle Load table in API 610
RE: Nozzle Load table in API 610
RE: Nozzle Load table in API 610
If the deflection due to nozzle loads puts the motor, seal, or other rotating element out of alignment, there will be problems. Pump vendor will be on the hook to warranty the problems. Pump vendor tries to understand and/or reduce this risk, by limiting allowable nozzle loads to known safe values.
Especially for large nozzles, stress can be quite low but still lead to big deflections (often causing piping designers to ask if the pump is made out of tin foil.) Linear extrapolation of the API table should not be expected (this argument usually follows the tin foil comment.)