Centrifugal Pump Testing Standards - Presentation by ITT

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This presentation will give you all the details you need to know about Centrifugal Pumps Testing Standards. It talks about API 610 , HI1.6, ISO 9906. What standards to follow while specifying pump testing and tolerances.

Text of Centrifugal Pump Testing Standards - Presentation by ITT

  • 1. Making Sense of Pump Testing Standards: How understanding standards can impact the bottom line Simon Bradshaw Director, API Product Development & Technology ITT Goulds Pumps October 22, 2013Stan Knecht Director, Product Marketing ITT Goulds Pumps

2. Agenda Overview of new testing standards used in the market today Testing tolerances: Why theyre needed and how they work Understanding how tolerances impact the product received and plant operating performance Which performance standards to specify, and how2Making Sense of Pump Testing Standards: How understanding standards can impact the bottom line 3. Overview:ANSI/HI 14.6-2011 The ANSI/HI Standard 14.6-2011 is intended to be used for centrifugal pump acceptance testing at recognized pump test facilities (i.e., a manufacturers facility or test laboratory). HI 14.6-2011 is available for download at www.pumps.org.3Making Sense of Pump Testing Standards: How understanding standards can impact the bottom line 4. Why Do We Need Tolerances? There is no such thing as a perfect cast or machined part. Everything is subject to some variation. The combination of variations in the pump impeller, pump casing and overall assembly yield a scatter in performance. The test loop components and instrumentation introduce further variability and scatter. The scatter can be reduced by better manufacturing techniques (i.e., investment cast impellers instead of sand cast ones). Better manufacturing and test techniques typically cost more. 4Making Sense of Pump Testing Standards: How understanding standards can impact the bottom line 5. Hydraulic Institute, API And ISO Pump Performance Standards HI 14.6-2011 American National Standard for Rotodynamic Pumps for Hydraulic Performance Acceptance Tests* (supersedes HI 1.6 and 2.6) API 610 11th edition ISO 9906-2012 Rotodynamic pumps Hydraulic performance acceptance tests* The direction is toward one worldwide standard for pump acceptance testing. *In practice HI 14.6-2011 ~ ISO 9906-2012 with common acceptance criteria5Making Sense of Pump Testing Standards: How understanding standards can impact the bottom line 6. Previous Testing Standards HI Standard 1.6-2000 (for centrifugal pumps) had two acceptance levels: Level A: (default level) At a rated head or rated flow (not both), it allowed for a positive tolerance for head, flow and efficiency, but no negative tolerance. Level B: At a rated head or rated flow (not both), it allowed for a positive and negative tolerance for head, flow and efficiency. HI Standard 2.6 (for vertical pumps) had an acceptance standard the same sas Level A. ISO 9906-1999 had two acceptance levels: Grade 1 and Grade 2 Both had bilateral tolerances for rated head or rated flow and allowed a negative tolerance on efficiency. All the above standards are withdrawn and considered obsolete.6Making Sense of Pump Testing Standards: How understanding standards can impact the bottom line 7. Other Pump Testing Standards You May Encounter ASME PTC 8.2: Mainly used on testing of larger pumps for power station application DIN 1944: Obsolete and replaced by ISO 9906 ISO 2548: Withdrawn and replaced by ISO 9906 ISO 3555: Withdrawn and replaced by ISO 9906 7Making Sense of Pump Testing Standards: How understanding standards can impact the bottom line 8. HI 14.6-2011 & ISO 9906-2012(E) Grade Test Guarantee Parameter RequirementGrade 1Grade 2Grade 3tQ10%16%18%tH6%10%14%Acceptance Grade Symbol1B1E1U2B2U3BRate of FlowMandatorytQ (%) 5% 5%0% to +10% 8%0% to +16% 9%Total HeadMandatorytH (%) 3% 3%0% to +6% 5%0% to +10% 7%tP (%)+4%+4%+10%+8%+16%+9%t (%)-3%-0%-0%-5%-5%-7%Powera EfficiencyaOptional (either/or) The power and efficiency tolerances are not the result of an exact calculation using the maximum values of a related column. They are instead reflecting real life experience. For grade 1E and 1U, no negative tolerance on efficiency is allowed. Note: All tolerances are percentages of values guaranteed. Unless agreed upon with the buyer, any other specified duty points are subject to acceptance grade 3B.8Making Sense of Pump Testing Standards: How understanding standards can impact the bottom line 9. HI 1.6-2000 level A to HI 14.6-2011 1U Pump rated Headft (m)< 200 (=681)AllAllTotal HeadtH (%)0% to +8%0% to +5%0% to +5%Rate of FlowtQ (%)0% to +10%Efficiencyt (%) The old level A is converted to Grade 1U.>500 (>150)-0% The acceptance bands currently dont change with rated head or flow.0% to +3% You can now specify either a power or efficiency tolerance not both.Grade Test Guarantee Parameter RequirementGrade 1Grade 2Grade 3tQ10%16%18%tH6%10%14%Acceptance Grade Symbol1B1E1U2B2U3BRate of FlowMandatorytQ (%) 5% 5%0% to +10% 8%0% to +16% 9%Total HeadMandatorytH (%) 3% 3%0% to +6% 5%0% to +10% 7%tP (%)+4%+4%+10%+8%+16%+9%t (%)-3%-0%- 0%-5%-5%-7%Powera EfficiencyaOptional (either/or)9Making Sense of Pump Testing Standards: How understanding standards can impact the bottom line 10. HI 1.6-2000 level B to HI 14.6-2011 ft (m)< 200 (=681)Total HeadtH (%)Rate of FlowtQ (%) t (%) There is no close equivalent of Level B in the new standard. You need to pick the grade that best meets your needs.-5% to +5%Efficiency>500 (>150)0% to +3%Pump rated Head200 to 500 (60 to 150)- 100/[(120/p)-0.2]%All-3% to +5%??Grade Test Guarantee Parameter RequirementGrade 1Grade 2Grade 3tQ10%16%18%tH6%10%14%Acceptance Grade Symbol1B1E1U2B2U3BRate of FlowMandatorytQ (%) 5% 5%0% to +10% 8%0% to +16% 9%Total HeadMandatorytH (%) 3% 3%0% to +6% 5%0% to +10% 7%tP (%)+4%+4%+10%+8%+16%+9%t (%)-3%-0%- 0%-5%-5%-7%Powera EfficiencyaOptional (either/or)10Making Sense of Pump Testing Standards: How understanding standards can impact the bottom line 11. ISO 9906-1999 to HI 14.6-2011/ISO 9906-2012 Grade 1 The old Grade 1 is now Grade 1B, with a rounding of the head tolerance.Grade 2Total HeadtH (%) 3%Total HeadtH (%) 5%Rate of FlowtQ (%) 4.5%Rate of FlowtQ (%) 8%Efficiencyt (%)-3%Efficiencyt (%)-5% The old Grade 2 is now Grade 2B. You can now specify either a power or efficiency tolerance not both.Grade Test Guarantee Parameter RequirementGrade 1Grade 2Grade 3tQ10%16%18%tH6%10%14%Acceptance Grade Symbol1B1E1U2B2U3BRate of FlowMandatorytQ (%) 5% 5%0% to +10% 8%0% to +16% 9%Total HeadMandatorytH (%) 3% 3%0% to +6% 5%0% to +10% 7%tP (%)+4%+4%+10%+8%+16%+9%t (%)-3%-0%- 0%-5%-5%-7%Powera EfficiencyaOptional (either/or)11Making Sense of Pump Testing Standards: How understanding standards can impact the bottom line 12. API 610 8th-10th / 11th edition API 610 8th, 9th, 10th Edition Pump rated Headft (m)< 500 ( 1000 (> 300)Total HeadtH (%)-2% to +5%-2% to +3%-2% to +2%Shutoff HeadtHS (%)-10% to +10%PowertP (%) API 610 8th through 10th edition had distinct tolerances.-8% to +8%-5% to +5%+4%API 610 11th Edition Pump rated Headft (m)Total HeadtH (%)Shutoff HeadtHS (%)PowertP (%)75 to 300)> 1000 (> 300)-3% to +3% -10% to +10%-8% to +8% +4%-5% to +5% API 610 11th edition is functionally equivalent to HI 14.6-2011and ISO 9906-2012 Grade 1B, with an added test point for shutoff head. API 610 does not have a rated flow tolerance, making it unsuitable for testing high specific speed pumps. API 610 does not have any guarantee of efficiency (only power), making it unsuitable for efficiency-critical applications.12Making Sense of Pump Testing Standards: How understanding standards can impact the bottom line 13. HI 14.6-2011 Recommended Default Acceptance Grade Based On Purchaser's Intended Service Default acceptance grade based on purchaser's intended service Rated shaft power of pump Application >100kW >10 to 100kW (134 hp) (13 to 134 hp) Municipal water and wastewater 2B 1B Building trades and HVAC 2B 1B Electric power industry 1B 1B API pumps 1B 1B Oil and gas industry Pipeline 1B 1B Water injection Not applicable 1B Chemical industry 2B 2B Cooling tower 2B 2B Pulp and paper 2B 2B Slurry 3B 3B General industry 3B 2B Dewatering, drainage and irrigation 3B 2B Pumps not listed above 3B 2B Note: This table applies where a guarantee point has been agreed upon, but no tolerance standard has been specified. Both HI 14.6 and ISO 9906 set a default test tolerance when it is not defined by the purchaser. The default tolerance may not be sufficient for your process. It is important that you actively review what tolerance you require.13Making Sense of Pump Testing Standards: How understanding standards can impact the bottom line 14. ITT Default Performance Standards CategoryANSI Process PumpLarge ProcessISO 5199 Process PumpVertical Turbine/ CanMultistageDouble Suction PumpSlurry PumpsAPIAxial FlowModel3196, 3796, CV3196 LF3196 3996, 32983180/85, 3175IC, ICP ICMVIT VIC3355, 33933410, 3409, 3420, 3498XHD,5500, SRL, JC, VJC3700,3910 3620, 3600, 7200AFITT Default Std1U (1B future) (HI 14.6)1B (HI 14.6)2BAPI 610 11th Ed/ 1B/2B1B (HI 14.6)1B (HI 14.6)2B (HI 14.6)API 610 11th Ed.2B (HI 14.6)(ISO 9906)14Making Sense of Pump Testing Standards: How understanding standards can impact the bottom line 15. Make Sure You Understand What Is Being Quoted To You By Your Supplier If you have not specified any performance criteria, what is the supplier standard ? This should be identified either in the supplier proposal or on the performance curve submitted with the bid. This is a critical question to ask, whether you are purchasing a performance test or not. Note: It is common practice in the pump industry that all pumps are not performance tested as standard. Many pump manufacturers can rely on historical test data to assure pump performance quality. However, all industrial pumps are pressure tested as standard to ensure safety and structural integrity. 15Making Sense of Pump Testing Standards: How understanding standards can impact the bottom line 16. Typical Pump Proposal Datasheet16Making Sense of Pump Testing Standards: How understanding standards can impact the bottom line 17. Curve Drawn To HI