Reviewers Needed for Updated Submersible Pump Tests Standard

The Hydraulic Institute (HI), under the approval of the American National Standards Institute (ANSI), is seeking qualified individuals in North America to participate in the review process for the draft of updated standard ANSI/HI 11.6 - Submersible Pump Tests. Interested parties are invited to contact Karen Anderson, Technical Affairs administrator, at kanderson@Pumps.org or (973) 267-9700, ext 123.

HI says this revision of Submersible Pump Tests represents a major departure from all previous pump test standards since it requires that the submersible pump be guaranteed and tested as a complete unit. If pump efficiency or required pump power has been guaranteed, then the pump unit’s wire-to-water efficiency or electric input power is guaranteed and tested, in addition to the required flow and head test.

The standard does not identify the individual sources of losses within the boundary of the submersible pump unit. When a manufacturer offers an efficiency guarantee for a submersible pump, or an input power guarantee, that guarantee encompasses the entire pump unit. This standard includes the details that state how acceptance testing shall be performed, and it defines pump acceptance criteria. The overall pump efficiency can be calculated by dividing the output hydraulic power delivered by the pump by the electrical input power delivered to the motor. This standard explains to the purchaser that any attempt to calculate an individual element of the pump unit’s overall efficiency (such as motor, cooling system, seals, bearings, or hydraulic efficiency to name a few) can yield questionable data and shall not be used to determine whether a submersible pump unit is acceptable.

Individuals and organizations in North America directly and materially affected by this standard are asked to contact HI. These parties include pump users and specifiers, producers, standards developers, government agencies, and general interest groups. HI is currently assembling a canvass list of all parties interested in reviewing the draft. This list will be submitted to ANSI in order to verify its open and balanced canvass requirements. HI pump standards are reliable, widely accepted references for anyone involved in pumps, including users, consultants, contractors, construction firms, manufacturers of pumps, seals, motors, instrumentation, controls, and pump software developers and systems integrators. HI periodically introduces new standards based on industry needs. HI's complete library of ANSI Standards for the pump industry are user-friendly and available in both electronic and print formats at the HI eStore, found at http://eStore.Pumps.org, or by calling the institute's purchasing line at (973) 267-9700, ext 118.

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