EN ISO 9906:2012

Foreword
Introduction
1 Scope
2 Normative references
3 Terms, definitions, symbols and subscripts
4 Pump measurements and acceptance criteria
5 Test procedures
6 Analysis
Annex A (normative) - Test arrangements
Annex B (informative) - NPSH test arrangements
Annex C (informative) - Calibration intervals
Annex D (informative) - Measurement equipment
Annex E (informative) - Tests performed on the
        entire equipment set - String test
Annex F (informative) - Reporting of test results
Annex G (informative) - Special test methods
Annex H (informative) - Witnessed pump test
Annex I (informative) - Conversion to SI units
Annex J (informative) - Measurement uncertainty
        for NPSH test
Bibliography

ISO 9906:2012 specifies hydraulic performance tests for customers' acceptance of rotodynamic pumps (centrifugal, mixed flow and axial pumps). It is intended to be used for pump acceptance testing at pump test facilities, such as manufacturers' pump test facilities or laboratories. ISO 9906:2012 can be applied to pumps of any size and to any pumped liquids which behave as clean, cold water.It specifies three levels of acceptance:grades 1B, 1E and 1U with tighter tolerance;grades 2B and 2U with broader tolerance;grade 3B with even broader tolerance.It applies either to a pump itself without any fittings or to a combination of a pump associated with all or part of its upstream and/or downstream fittings.