Mr. Sunil;
Below is a summary of the API 610 pump evaluation criteria.
Horizontal Pumps:
Satisfying the values specified in the API 610 Table 2 is sufficient.
(API 610 F.1) If the individual nozzle loads are greater than the API 610 Table 2 allowable, but are less than double the allowable, then the pump is acceptable if the equations is Appendix F are satisfied. Conditions are described below and each equation is reported in the API 610 Analysis report.
Condition F.1.2.1 compares individual nozzle loads to 2 times the API 610 Table 2 allowables.
Condition F.1.2.2 compares a combination of the resultant forces and moments on each nozzle to an allowable
Condition F.1.2.3 compares the translated and resolved forces and moments of each nozzle at the pump center to an allowable.
Vertical-In-Line Pumps:
Satisfying the values specified in the API 610 Table 2 is sufficient (The side nozzles may be up to double the API 610 Table 2 allowables.)
(API 610 F.2) If the individual nozzle loads are greater than double the API 610 Table 2 allowables, then the pump is acceptable if the principal stress in each nozzle is less than 6000 lb./sq.in.
Contact me if you need further information.
-Griselda Mani
COADE, Inc.
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