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Hydraulic Institute Updates Rotodynamic Submersible Pumps Standard

Industry News

Hydraulic Institute Updates Rotodynamic Submersible Pumps Standard

The Hydraulic Institute (HI) has updated the 2001 edition of the ANSI/HI standard on submersible pump tests and published ANSI/HI 11.6 – 2012 Rotodynamic Submersible Pumps for Hydraulic Performance, Hydrostatic Pressure, Mechanical, and Electrical Acceptance Tests.  The updated standard applies to customer acceptance testing of submersible pumps driven by induction motors, unless otherwise agreed or specified.

ANSI/HI 11.6 – 2012 provides uniform procedures for performance, hydrostatic, net positive suction head required (NPSHR), submersible motor integrity, and vibration testing of submersible pumps; and data recording and reporting of the test results. It is intended to define test procedures that may be invoked by contractual agreement between a buyer and manufacturer. It is not intended to define a manufacturer’s standard practice.

A submersible pump is defined as a close-coupled pump/motor unit designed to operate submerged in the pumped liquid.  This definition includes submersible pumps operating in either a wet-pit or dry-pit environment.  A standard test measures pump performance from suction flange to discharge flange and electrical input power.  It does not include accessory items, such as discharge elbows, suction fittings, or valves, unless specified by a contractual agreement.

The following submersible pump designs are covered in the 2012 edition of the standard:

  • Semi-permanent/pull-up/wet-pit types
  • Dry-pit/dry-installed types
  • Portable/flexible discharge types
  • Chopper/cutter/grinder types
  • Close-coupled types
  • Integral electric motor types

Information in the standard may be applied to pumps of any size and to any pumped liquids behaving as clean cold water. This standard does not deal with the structural details of the pump or with the mechanical properties of their components.

This standard is available now at the HI eStore for $95.00 and is available in both hardcopy and pdf format.

About the Hydraulic Institute: The Mission of the Hydraulic Institute is to serve the pump industry as a forum for the exchange of information while providing value-added services to member companies and pump users worldwide. This includes the development and delivery of comprehensive industry standards. For more information on the Hydraulic Institute, its member companies and its Standards Partners, visit www.Pumps.org.  For information on its educational offerings visit the Pump Systems Matter website at www.PumpSystemsMatter.org.

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