scope:

When specified by the user, pumps within scope that are supplied shall conform to these requirements.

a) Horizontal end suction single stage (ANSI/ASME B73.1 Specification for Horizontal End Suction Centrifugal Pumps for Chemical Process and B73.3 Specification for Sealless Horizontal End Suction Metallic Centrifugal Pumps for Chemical Process).

b) Vertical in-line single stage (ANSI/ASME B73.2 Specification for Vertical In-Line Centrifugal Pumps for Chemical Process).

c) Axially split one and two stage (BB1).

d) Vertically suspended pump single casing discharge through column with diffuser and volute (VS1 and VS2).

Many other pump types are not included because of the different designs that are unique to each manufacturer. For pump types outside the scope of this standard, allowable nozzle loads should be established by the pump manufacturer, applied nozzle loads predicted by the purchaser, and differences, if any, negotiated and resolved by the two parties.

For assessment of applied nozzle loads for slurry pumps, see ANSI/HI 12.1-12.6 Rotodynamic Centrifugal Slurry Pumps for Nomenclature, Definitions, Applications, and Operation.

Purpose

This standard induces recommendations for assessment of applied nozzle loads for the the pump types within scope.