{"id":769,"date":"2019-11-06T11:12:57","date_gmt":"2019-11-06T11:12:57","guid":{"rendered":"https:\/\/ptrotek.com\/index.php\/centrifugal-compressor-aerodynamic-testing\/"},"modified":"2020-07-23T19:13:38","modified_gmt":"2020-07-23T11:13:38","slug":"centrifugal-compressor-aerodynamic-testing","status":"publish","type":"page","link":"https:\/\/ptrotek.com\/index.php\/centrifugal-compressor-aerodynamic-testing\/","title":{"rendered":"Centrifugal Compressor Aerodynamic Testing"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-page\" data-elementor-id=\"769\" class=\"elementor elementor-769\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-966db52 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"966db52\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div 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Companies<\/a><\/li>\n\t\t<li id=\"menu-item-943\" class=\"menu-item menu-item-type-post_type menu-item-object-page hfe-creative-menu\"><a href=\"https:\/\/ptrotek.com\/index.php\/industrial-commodity-inspection-services\/\" class = \"hfe-sub-menu-item\">Industrial Commodity Inspection Services<\/a><\/li>\n\t<\/ul>\n<\/li>\n\t<li id=\"menu-item-937\" class=\"menu-item menu-item-type-post_type menu-item-object-page hfe-creative-menu\"><a href=\"https:\/\/ptrotek.com\/index.php\/industrial-quality-control\/\" class = \"hfe-sub-menu-item\">Industrial Quality Control<\/a><\/li>\n\t<li id=\"menu-item-861\" class=\"menu-item menu-item-type-post_type menu-item-object-page hfe-creative-menu\"><a href=\"https:\/\/ptrotek.com\/index.php\/industrial-test-systems\/\" class = \"hfe-sub-menu-item\">Industrial Test Systems<\/a><\/li>\n\t<li id=\"menu-item-963\" class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-has-children hfe-has-submenu hfe-creative-menu\"><div class=\"hfe-has-submenu-container\" tabindex=\"0\" role=\"button\" aria-haspopup=\"true\" aria-expanded=\"false\"><a aria-expanded=\"false\" href=\"https:\/\/ptrotek.com\/index.php\/industrial-third-party-inspection\/\" class = \"hfe-sub-menu-item\">Industrial Third Party Inspection<span class='hfe-menu-toggle sub-arrow hfe-menu-child-1'><i class='fa'><\/i><\/span><\/a><\/div>\n\t<ul class=\"sub-menu\">\n\t\t<li id=\"menu-item-962\" class=\"menu-item menu-item-type-post_type menu-item-object-page hfe-creative-menu\"><a href=\"https:\/\/ptrotek.com\/index.php\/industrial-third-party-inspection-agency\/\" class = \"hfe-sub-menu-item\">Industrial Third Party Inspection Agency<\/a><\/li>\n\t\t<li id=\"menu-item-966\" class=\"menu-item menu-item-type-post_type menu-item-object-page hfe-creative-menu\"><a href=\"https:\/\/ptrotek.com\/index.php\/industrial-third-party-inspection-services\/\" class = \"hfe-sub-menu-item\">Industrial Third Party Inspection Services<\/a><\/li>\n\t<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n<li id=\"menu-item-970\" class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-has-children parent hfe-has-submenu hfe-creative-menu\"><div class=\"hfe-has-submenu-container\" tabindex=\"0\" role=\"button\" aria-haspopup=\"true\" aria-expanded=\"false\"><a aria-expanded=\"false\" href=\"https:\/\/ptrotek.com\/index.php\/inspection-and-test-plan\/\" class = \"hfe-menu-item\">Inspection and Test Plan<span class='hfe-menu-toggle sub-arrow hfe-menu-child-0'><i class='fa'><\/i><\/span><\/a><\/div>\n<ul class=\"sub-menu\">\n\t<li id=\"menu-item-832\" class=\"menu-item menu-item-type-post_type menu-item-object-page hfe-creative-menu\"><a href=\"https:\/\/ptrotek.com\/index.php\/inspection-and-test-plan-for-centrifugal-compressor-sample\/\" class = \"hfe-sub-menu-item\">Inspection and Test Plan for Centrifugal Compressor \u2013 Sample<\/a><\/li>\n\t<li id=\"menu-item-828\" class=\"menu-item menu-item-type-post_type menu-item-object-page hfe-creative-menu\"><a href=\"https:\/\/ptrotek.com\/index.php\/inspection-and-test-plan-for-centrifugal-pump-sample\/\" class = \"hfe-sub-menu-item\">Inspection and Test Plan for Centrifugal Pump \u2013 Sample<\/a><\/li>\n\t<li id=\"menu-item-880\" class=\"menu-item menu-item-type-post_type menu-item-object-page hfe-creative-menu\"><a href=\"https:\/\/ptrotek.com\/index.php\/inspection-and-test-plan-for-fin-tube-heat-exchanger-or-air-cooled-heat-exchager-sample\/\" class = \"hfe-sub-menu-item\">Inspection and Test Plan for Fin Tube Heat Exchanger or Air-Cooled Heat Exchager \u2013 Sample<\/a><\/li>\n\t<li id=\"menu-item-865\" class=\"menu-item menu-item-type-post_type menu-item-object-page hfe-creative-menu\"><a href=\"https:\/\/ptrotek.com\/index.php\/inspection-and-test-plan-for-fire-tube-boiler-sample\/\" class = \"hfe-sub-menu-item\">Inspection and Test Plan for Fire Tube Boiler \u2013 Sample<\/a><\/li>\n\t<li id=\"menu-item-885\" class=\"menu-item menu-item-type-post_type menu-item-object-page hfe-creative-menu\"><a href=\"https:\/\/ptrotek.com\/index.php\/inspection-and-test-plan-for-pressure-vessel\/\" class = \"hfe-sub-menu-item\">Inspection and Test Plan for Pressure Vessel<\/a><\/li>\n\t<li id=\"menu-item-877\" class=\"menu-item menu-item-type-post_type menu-item-object-page hfe-creative-menu\"><a href=\"https:\/\/ptrotek.com\/index.php\/inspection-and-test-plan-for-shell-and-tube-heat-exchanger-sample\/\" class = \"hfe-sub-menu-item\">Inspection and Test Plan for Shell and Tube Heat Exchanger \u2013 Sample<\/a><\/li>\n\t<li id=\"menu-item-873\" class=\"menu-item menu-item-type-post_type menu-item-object-page hfe-creative-menu\"><a href=\"https:\/\/ptrotek.com\/index.php\/inspection-and-test-plan-for-storage-tank-sample\/\" class = \"hfe-sub-menu-item\">Inspection and Test Plan for Storage Tank \u2013 Sample<\/a><\/li>\n\t<li id=\"menu-item-867\" class=\"menu-item menu-item-type-post_type menu-item-object-page hfe-creative-menu\"><a href=\"https:\/\/ptrotek.com\/index.php\/inspection-and-test-plan-for-water-tube-boiler-sample\/\" class = \"hfe-sub-menu-item\">Inspection and Test Plan for Water Tube Boiler \u2013 Sample<\/a><\/li>\n\t<li id=\"menu-item-939\" class=\"menu-item menu-item-type-post_type menu-item-object-page hfe-creative-menu\"><a href=\"https:\/\/ptrotek.com\/index.php\/inspection-of-packing\/\" class = \"hfe-sub-menu-item\">Inspection of Packing<\/a><\/li>\n\t<li id=\"menu-item-947\" class=\"menu-item menu-item-type-post_type menu-item-object-page hfe-creative-menu\"><a href=\"https:\/\/ptrotek.com\/index.php\/inspection-scope\/\" class = \"hfe-sub-menu-item\">Inspection Scope<\/a><\/li>\n<\/ul>\n<\/li>\n<li id=\"menu-item-876\" class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-has-children parent hfe-has-submenu hfe-creative-menu\"><div class=\"hfe-has-submenu-container\" tabindex=\"0\" role=\"button\" aria-haspopup=\"true\" aria-expanded=\"false\"><a aria-expanded=\"false\" href=\"https:\/\/ptrotek.com\/index.php\/piping-inspection\/\" class = \"hfe-menu-item\">Piping Inspection<span class='hfe-menu-toggle sub-arrow hfe-menu-child-0'><i class='fa'><\/i><\/span><\/a><\/div>\n<ul class=\"sub-menu\">\n\t<li id=\"menu-item-836\" class=\"menu-item menu-item-type-post_type menu-item-object-page hfe-creative-menu\"><a href=\"https:\/\/ptrotek.com\/index.php\/piping-and-equipment-cleaning-specification\/\" class = \"hfe-sub-menu-item\">Piping and Equipment Cleaning Specification<\/a><\/li>\n\t<li id=\"menu-item-846\" class=\"menu-item menu-item-type-post_type menu-item-object-page hfe-creative-menu\"><a href=\"https:\/\/ptrotek.com\/index.php\/piping-design-specification\/\" class = \"hfe-sub-menu-item\">Piping Design Specification<\/a><\/li>\n\t<li id=\"menu-item-838\" class=\"menu-item menu-item-type-post_type menu-item-object-page hfe-creative-menu\"><a href=\"https:\/\/ptrotek.com\/index.php\/piping-fabrication-and-erection-specification\/\" class = \"hfe-sub-menu-item\">Piping Fabrication and Erection Specification<\/a><\/li>\n\t<li id=\"menu-item-840\" class=\"menu-item menu-item-type-post_type menu-item-object-page hfe-creative-menu\"><a href=\"https:\/\/ptrotek.com\/index.php\/pipe-three-layer-polyethylene-coating-specification\/\" class = \"hfe-sub-menu-item\">Pipe Three Layer Polyethylene Coating Specification<\/a><\/li>\n\t<li id=\"menu-item-842\" class=\"menu-item menu-item-type-post_type menu-item-object-page hfe-creative-menu\"><a href=\"https:\/\/ptrotek.com\/index.php\/piping-shop-fabrication-specification\/\" class = \"hfe-sub-menu-item\">Piping Shop Fabrication Specification<\/a><\/li>\n\t<li id=\"menu-item-847\" class=\"menu-item menu-item-type-post_type menu-item-object-page hfe-creative-menu\"><a href=\"https:\/\/ptrotek.com\/index.php\/piping-hanging-and-support-engineering-specification\/\" class = \"hfe-sub-menu-item\">Piping Hanging and Support Engineering Specification<\/a><\/li>\n\t<li id=\"menu-item-848\" class=\"menu-item menu-item-type-post_type menu-item-object-page hfe-creative-menu\"><a href=\"https:\/\/ptrotek.com\/index.php\/piping-stress-analysis-engineering-specification\/\" class = \"hfe-sub-menu-item\">Piping Stress Analysis Engineering Specification<\/a><\/li>\n\t<li id=\"menu-item-841\" class=\"menu-item menu-item-type-post_type menu-item-object-page hfe-creative-menu\"><a href=\"https:\/\/ptrotek.com\/index.php\/pipeline-wrapping-and-coating-specification\/\" class = \"hfe-sub-menu-item\">Pipeline Wrapping and Coating Specification<\/a><\/li>\n<\/ul>\n<\/li>\n<li id=\"menu-item-1517\" class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-has-children parent hfe-has-submenu hfe-creative-menu\"><div class=\"hfe-has-submenu-container\" tabindex=\"0\" role=\"button\" aria-haspopup=\"true\" aria-expanded=\"false\"><a aria-expanded=\"false\" href=\"https:\/\/ptrotek.com\/index.php\/pump-inspection\/\" class = \"hfe-menu-item\">Pump Inspection<span class='hfe-menu-toggle sub-arrow hfe-menu-child-0'><i class='fa'><\/i><\/span><\/a><\/div>\n<ul class=\"sub-menu\">\n\t<li id=\"menu-item-829\" class=\"menu-item menu-item-type-post_type menu-item-object-page hfe-creative-menu\"><a href=\"https:\/\/ptrotek.com\/index.php\/pump-casing-hydrostatic-test\/\" class = \"hfe-sub-menu-item\">Pump Casing Hydrostatic Test<\/a><\/li>\n\t<li id=\"menu-item-830\" class=\"menu-item menu-item-type-post_type menu-item-object-page hfe-creative-menu\"><a href=\"https:\/\/ptrotek.com\/index.php\/pump-casing-inspection\/\" class = \"hfe-sub-menu-item\">Pump Casing Inspection<\/a><\/li>\n\t<li id=\"menu-item-839\" class=\"menu-item menu-item-type-post_type menu-item-object-page hfe-creative-menu\"><a href=\"https:\/\/ptrotek.com\/index.php\/pump-guides-and-reviews\/\" class = \"hfe-sub-menu-item\">Pump Guides and Reviews<\/a><\/li>\n\t<li id=\"menu-item-827\" class=\"menu-item menu-item-type-post_type menu-item-object-page hfe-creative-menu\"><a href=\"https:\/\/ptrotek.com\/index.php\/pump-impeller-dynamic-balancing\/\" class = \"hfe-sub-menu-item\">Pump Impeller Dynamic Balancing<\/a><\/li>\n\t<li id=\"menu-item-826\" class=\"menu-item menu-item-type-post_type menu-item-object-page hfe-creative-menu\"><a href=\"https:\/\/ptrotek.com\/index.php\/pump-mechanical-run-test\/\" class = \"hfe-sub-menu-item\">Pump Mechanical Run Test<\/a><\/li>\n\t<li id=\"menu-item-825\" class=\"menu-item menu-item-type-post_type menu-item-object-page hfe-creative-menu\"><a href=\"https:\/\/ptrotek.com\/index.php\/pump-net-positive-suction-head-test-npsh-test\/\" class = \"hfe-sub-menu-item\">Pump Net Positive Suction Head Test (NPSH Test)<\/a><\/li>\n\t<li id=\"menu-item-824\" class=\"menu-item menu-item-type-post_type menu-item-object-page hfe-creative-menu\"><a href=\"https:\/\/ptrotek.com\/index.php\/pump-vibration-testing\/\" class = \"hfe-sub-menu-item\">Pump Vibration Testing<\/a><\/li>\n\t<li id=\"menu-item-863\" class=\"menu-item menu-item-type-post_type menu-item-object-page hfe-creative-menu\"><a href=\"https:\/\/ptrotek.com\/index.php\/centrifugal-pump-performance-test\/\" class = \"hfe-sub-menu-item\">Centrifugal Pump Performance Test<\/a><\/li>\n<\/ul>\n<\/li>\n<li id=\"menu-item-954\" class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-has-children parent hfe-has-submenu hfe-creative-menu\"><div class=\"hfe-has-submenu-container\" tabindex=\"0\" role=\"button\" aria-haspopup=\"true\" aria-expanded=\"false\"><a aria-expanded=\"false\" href=\"https:\/\/ptrotek.com\/index.php\/quality-control-plan\/\" class = \"hfe-menu-item\">Quality Control Plan<span class='hfe-menu-toggle sub-arrow hfe-menu-child-0'><i class='fa'><\/i><\/span><\/a><\/div>\n<ul class=\"sub-menu\">\n\t<li id=\"menu-item-933\" class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-has-children hfe-has-submenu hfe-creative-menu\"><div class=\"hfe-has-submenu-container\" tabindex=\"0\" role=\"button\" aria-haspopup=\"true\" aria-expanded=\"false\"><a aria-expanded=\"false\" href=\"https:\/\/ptrotek.com\/index.php\/quality-control-in-packaging\/\" class = \"hfe-sub-menu-item\">Quality Control in Packaging<span class='hfe-menu-toggle sub-arrow hfe-menu-child-1'><i class='fa'><\/i><\/span><\/a><\/div>\n\t<ul class=\"sub-menu\">\n\t\t<li id=\"menu-item-940\" class=\"menu-item menu-item-type-post_type menu-item-object-page hfe-creative-menu\"><a href=\"https:\/\/ptrotek.com\/index.php\/seaworthy-packing-procedure\/\" class = \"hfe-sub-menu-item\">Seaworthy Packing Procedure<\/a><\/li>\n\t<\/ul>\n<\/li>\n\t<li id=\"menu-item-936\" class=\"menu-item menu-item-type-post_type menu-item-object-page hfe-creative-menu\"><a href=\"https:\/\/ptrotek.com\/index.php\/quality-control-manual-for-contractors\/\" class = \"hfe-sub-menu-item\">Quality Control Manual for Contractors<\/a><\/li>\n\t<li id=\"menu-item-951\" class=\"menu-item menu-item-type-post_type menu-item-object-page hfe-creative-menu\"><a href=\"https:\/\/ptrotek.com\/index.php\/quality-control-forms\/\" class = \"hfe-sub-menu-item\">Quality Control Forms<\/a><\/li>\n<\/ul>\n<\/li>\n<li id=\"menu-item-938\" class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-has-children parent hfe-has-submenu hfe-creative-menu\"><div class=\"hfe-has-submenu-container\" tabindex=\"0\" role=\"button\" aria-haspopup=\"true\" aria-expanded=\"false\"><a aria-expanded=\"false\" href=\"https:\/\/ptrotek.com\/index.php\/vessel-pressure-testing\/\" class = \"hfe-menu-item\">Vessel Pressure Testing<span class='hfe-menu-toggle sub-arrow hfe-menu-child-0'><i class='fa'><\/i><\/span><\/a><\/div>\n<ul class=\"sub-menu\">\n\t<li id=\"menu-item-871\" class=\"menu-item menu-item-type-post_type menu-item-object-page hfe-creative-menu\"><a href=\"https:\/\/ptrotek.com\/index.php\/pressure-safety-valve-inspection\/\" class = \"hfe-sub-menu-item\">Pressure Safety Valve Inspection<\/a><\/li>\n\t<li id=\"menu-item-912\" class=\"menu-item menu-item-type-post_type menu-item-object-page hfe-creative-menu\"><a href=\"https:\/\/ptrotek.com\/index.php\/pressure-vessel-certification\/\" class = \"hfe-sub-menu-item\">Pressure Vessel Certification<\/a><\/li>\n\t<li id=\"menu-item-913\" class=\"menu-item menu-item-type-post_type menu-item-object-page hfe-creative-menu\"><a href=\"https:\/\/ptrotek.com\/index.php\/pressure-vessel-definition\/\" class = \"hfe-sub-menu-item\">Pressure Vessel Definition<\/a><\/li>\n\t<li id=\"menu-item-927\" class=\"menu-item menu-item-type-post_type menu-item-object-page hfe-creative-menu\"><a href=\"https:\/\/ptrotek.com\/index.php\/pressure-vessel-dimension-inspection\/\" class = \"hfe-sub-menu-item\">Pressure Vessel Dimension Inspection<\/a><\/li>\n\t<li id=\"menu-item-909\" class=\"menu-item menu-item-type-post_type menu-item-object-page hfe-creative-menu\"><a href=\"https:\/\/ptrotek.com\/index.php\/pressure-vessel-heads\/\" class = \"hfe-sub-menu-item\">Pressure Vessel Heads<\/a><\/li>\n\t<li id=\"menu-item-930\" class=\"menu-item menu-item-type-post_type menu-item-object-page hfe-creative-menu\"><a href=\"https:\/\/ptrotek.com\/index.php\/pressure-vessel-inspections\/\" class = \"hfe-sub-menu-item\">Pressure Vessel Inspections<\/a><\/li>\n\t<li id=\"menu-item-928\" class=\"menu-item menu-item-type-post_type menu-item-object-page hfe-creative-menu\"><a href=\"https:\/\/ptrotek.com\/index.php\/pressure-vessel-plate\/\" class = \"hfe-sub-menu-item\">Pressure Vessel Plate<\/a><\/li>\n\t<li id=\"menu-item-911\" class=\"menu-item menu-item-type-post_type menu-item-object-page hfe-creative-menu\"><a href=\"https:\/\/ptrotek.com\/index.php\/pressure-vessel-rt-test\/\" class = \"hfe-sub-menu-item\">Pressure Vessel RT Test<\/a><\/li>\n\t<li id=\"menu-item-837\" class=\"menu-item menu-item-type-post_type menu-item-object-page hfe-creative-menu\"><a href=\"https:\/\/ptrotek.com\/index.php\/engineering-specification-for-pressure-test-of-piping-system\/\" class = \"hfe-sub-menu-item\">Engineering Specification for Pressure Test of Piping System<\/a><\/li>\n\t<li id=\"menu-item-883\" class=\"menu-item menu-item-type-post_type menu-item-object-page hfe-creative-menu\"><a href=\"https:\/\/ptrotek.com\/index.php\/pwht-requirements-in-pressure-vessel-inspections\/\" class = \"hfe-sub-menu-item\">PWHT Requirements in Pressure Vessel Inspections<\/a><\/li>\n<\/ul>\n<\/li>\n<li id=\"menu-item-892\" class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-has-children parent hfe-has-submenu hfe-creative-menu\"><div class=\"hfe-has-submenu-container\" tabindex=\"0\" role=\"button\" aria-haspopup=\"true\" aria-expanded=\"false\"><a aria-expanded=\"false\" href=\"https:\/\/ptrotek.com\/index.php\/surface-dust-test-on-blast-cleaned-surface\/\" class = \"hfe-menu-item\">Surface Dust Test on Blast-Cleaned Surface<span class='hfe-menu-toggle sub-arrow hfe-menu-child-0'><i class='fa'><\/i><\/span><\/a><\/div>\n<ul class=\"sub-menu\">\n\t<li id=\"menu-item-893\" class=\"menu-item menu-item-type-post_type menu-item-object-page hfe-creative-menu\"><a href=\"https:\/\/ptrotek.com\/index.php\/surface-profile-measurement-by-replica-tape-2\/\" class = \"hfe-sub-menu-item\">Surface Profile Measurement by Replica Tape<\/a><\/li>\n<\/ul>\n<\/li>\n<li id=\"menu-item-1524\" class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-has-children parent hfe-has-submenu hfe-creative-menu\"><div class=\"hfe-has-submenu-container\" tabindex=\"0\" role=\"button\" aria-haspopup=\"true\" aria-expanded=\"false\"><a aria-expanded=\"false\" href=\"https:\/\/ptrotek.com\/index.php\/third-party-inspection\/\" class = \"hfe-menu-item\">Third Party Inspection<span class='hfe-menu-toggle sub-arrow hfe-menu-child-0'><i class='fa'><\/i><\/span><\/a><\/div>\n<ul class=\"sub-menu\">\n\t<li id=\"menu-item-967\" class=\"menu-item menu-item-type-post_type menu-item-object-page hfe-creative-menu\"><a href=\"https:\/\/ptrotek.com\/index.php\/third-party-independent-inspection\/\" class = \"hfe-sub-menu-item\">Third Party Independent Inspection<\/a><\/li>\n\t<li id=\"menu-item-960\" class=\"menu-item menu-item-type-post_type menu-item-object-page hfe-creative-menu\"><a href=\"https:\/\/ptrotek.com\/index.php\/third-party-inspection-expediting\/\" class = \"hfe-sub-menu-item\">Third Party Inspection Expediting<\/a><\/li>\n\t<li id=\"menu-item-834\" class=\"menu-item menu-item-type-post_type menu-item-object-page hfe-creative-menu\"><a href=\"https:\/\/ptrotek.com\/index.php\/third-party-inspection-for-centrifugal-compressor-procedure\/\" class = \"hfe-sub-menu-item\">Third Party Inspection for Centrifugal Compressor \u2013 Procedure<\/a><\/li>\n\t<li id=\"menu-item-866\" class=\"menu-item menu-item-type-post_type menu-item-object-page hfe-creative-menu\"><a href=\"https:\/\/ptrotek.com\/index.php\/third-party-inspection-for-fire-tube-boiler-procedure\/\" class = \"hfe-sub-menu-item\">Third Party Inspection for Fire Tube Boiler \u2013 Procedure<\/a><\/li>\n\t<li id=\"menu-item-823\" class=\"menu-item menu-item-type-post_type menu-item-object-page hfe-creative-menu\"><a href=\"https:\/\/ptrotek.com\/index.php\/third-party-inspection-for-centrifugal-pump-procedure\/\" class = \"hfe-sub-menu-item\">Third Party Inspection for Centrifugal Pump \u2013 Procedure<\/a><\/li>\n\t<li id=\"menu-item-879\" class=\"menu-item menu-item-type-post_type menu-item-object-page hfe-creative-menu\"><a href=\"https:\/\/ptrotek.com\/index.php\/third-party-inspection-for-fin-tube-heat-exchanger\/\" class = \"hfe-sub-menu-item\">Third Party Inspection for Fin Tube Heat Exchanger<\/a><\/li>\n\t<li id=\"menu-item-959\" class=\"menu-item menu-item-type-post_type menu-item-object-page hfe-creative-menu\"><a href=\"https:\/\/ptrotek.com\/index.php\/third-party-inspection-for-material-stamp\/\" class = \"hfe-sub-menu-item\">Third Party Inspection for Material Stamp<\/a><\/li>\n\t<li id=\"menu-item-929\" class=\"menu-item menu-item-type-post_type menu-item-object-page hfe-creative-menu\"><a href=\"https:\/\/ptrotek.com\/index.php\/third-party-inspection-for-pressure-vessel-procedure\/\" class = \"hfe-sub-menu-item\">Third Party Inspection for Pressure Vessel \/ Procedure<\/a><\/li>\n\t<li id=\"menu-item-874\" class=\"menu-item menu-item-type-post_type menu-item-object-page hfe-creative-menu\"><a href=\"https:\/\/ptrotek.com\/index.php\/third-party-inspection-for-storage-tank\/\" class = \"hfe-sub-menu-item\">Third Party Inspection for Storage Tank<\/a><\/li>\n\t<li id=\"menu-item-869\" class=\"menu-item menu-item-type-post_type menu-item-object-page hfe-creative-menu\"><a href=\"https:\/\/ptrotek.com\/index.php\/third-party-inspection-for-water-tube-boiler-procedure\/\" class = \"hfe-sub-menu-item\">Third Party Inspection for Water Tube Boiler \u2013 Procedure<\/a><\/li>\n\t<li id=\"menu-item-961\" class=\"menu-item menu-item-type-post_type menu-item-object-page hfe-creative-menu\"><a href=\"https:\/\/ptrotek.com\/index.php\/third-party-quality-inspection\/\" class = \"hfe-sub-menu-item\">Third Party Quality Inspection<\/a><\/li>\n\t<li id=\"menu-item-968\" class=\"menu-item menu-item-type-post_type menu-item-object-page hfe-creative-menu\"><a href=\"https:\/\/ptrotek.com\/index.php\/3rd-party-shop-inspection\/\" class = \"hfe-sub-menu-item\">3rd Party Shop Inspection<\/a><\/li>\n<\/ul>\n<\/li>\n<li id=\"menu-item-1529\" class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-has-children parent hfe-has-submenu hfe-creative-menu\"><div class=\"hfe-has-submenu-container\" tabindex=\"0\" role=\"button\" aria-haspopup=\"true\" aria-expanded=\"false\"><a aria-expanded=\"false\" href=\"https:\/\/ptrotek.com\/index.php\/welding-inspection\/\" class = \"hfe-menu-item\">Welding Inspection<span class='hfe-menu-toggle sub-arrow hfe-menu-child-0'><i class='fa'><\/i><\/span><\/a><\/div>\n<ul class=\"sub-menu\">\n\t<li id=\"menu-item-843\" class=\"menu-item menu-item-type-post_type menu-item-object-page hfe-creative-menu\"><a href=\"https:\/\/ptrotek.com\/index.php\/cold-thermal-insulation-specification\/\" class = \"hfe-sub-menu-item\">Cold Thermal Insulation Specification<\/a><\/li>\n\t<li id=\"menu-item-844\" class=\"menu-item menu-item-type-post_type menu-item-object-page hfe-creative-menu\"><a href=\"https:\/\/ptrotek.com\/index.php\/hot-thermal-insulation-specification\/\" class = \"hfe-sub-menu-item\">Hot Thermal Insulation Specification<\/a><\/li>\n\t<li id=\"menu-item-868\" class=\"menu-item menu-item-type-post_type menu-item-object-page hfe-creative-menu\"><a href=\"https:\/\/ptrotek.com\/index.php\/welding-inspection-procedure-checklist\/\" class = \"hfe-sub-menu-item\">Welding Inspection Procedure \/ Checklist<\/a><\/li>\n\t<li id=\"menu-item-859\" class=\"menu-item menu-item-type-post_type menu-item-object-page hfe-creative-menu\"><a href=\"https:\/\/ptrotek.com\/index.php\/what-is-the-annealing-heat-treatment\/\" class = \"hfe-sub-menu-item\">What is the Annealing Heat Treatment?<\/a><\/li>\n\t<li id=\"menu-item-849\" class=\"menu-item menu-item-type-post_type menu-item-object-page hfe-creative-menu\"><a href=\"https:\/\/ptrotek.com\/index.php\/what-is-the-arithmetic-average-roughness-height\/\" class = \"hfe-sub-menu-item\">What is the Arithmetic Average Roughness Height?<\/a><\/li>\n\t<li id=\"menu-item-925\" class=\"menu-item menu-item-type-post_type menu-item-object-page hfe-creative-menu\"><a href=\"https:\/\/ptrotek.com\/index.php\/what-is-the-destructive-testing\/\" class = \"hfe-sub-menu-item\">What is the Destructive Testing?<\/a><\/li>\n\t<li id=\"menu-item-922\" class=\"menu-item menu-item-type-post_type menu-item-object-page hfe-creative-menu\"><a href=\"https:\/\/ptrotek.com\/index.php\/what-is-the-essential-variable-in-welding-procedure-specification-wps\/\" class = \"hfe-sub-menu-item\">What is the Essential Variable in Welding Procedure Specification (WPS)?<\/a><\/li>\n\t<li id=\"menu-item-924\" class=\"menu-item menu-item-type-post_type menu-item-object-page hfe-creative-menu\"><a href=\"https:\/\/ptrotek.com\/index.php\/what-is-the-ferrous-materials\/\" class = \"hfe-sub-menu-item\">What is the Ferrous Materials?<\/a><\/li>\n\t<li id=\"menu-item-915\" class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-has-children hfe-has-submenu hfe-creative-menu\"><div class=\"hfe-has-submenu-container\" tabindex=\"0\" role=\"button\" aria-haspopup=\"true\" aria-expanded=\"false\"><a aria-expanded=\"false\" href=\"https:\/\/ptrotek.com\/index.php\/what-is-the-group-number-in-welding\/\" class = \"hfe-sub-menu-item\">What is the Group Number in Welding?<span class='hfe-menu-toggle sub-arrow hfe-menu-child-1'><i class='fa'><\/i><\/span><\/a><\/div>\n\t<ul class=\"sub-menu\">\n\t\t<li id=\"menu-item-908\" class=\"menu-item menu-item-type-post_type menu-item-object-page hfe-creative-menu\"><a href=\"https:\/\/ptrotek.com\/index.php\/what-is-the-a-number-in-welding-procedure-specification\/\" class = \"hfe-sub-menu-item\">What is the A number in Welding Procedure Specification?<\/a><\/li>\n\t\t<li id=\"menu-item-916\" class=\"menu-item menu-item-type-post_type menu-item-object-page hfe-creative-menu\"><a href=\"https:\/\/ptrotek.com\/index.php\/what-is-the-f-number-in-welding-procedure-specification\/\" class = \"hfe-sub-menu-item\">What is the F number in Welding Procedure Specification?<\/a><\/li>\n\t\t<li id=\"menu-item-918\" class=\"menu-item menu-item-type-post_type menu-item-object-page hfe-creative-menu\"><a href=\"https:\/\/ptrotek.com\/index.php\/p-number-in-welding\/\" class = \"hfe-sub-menu-item\">P number in Welding<\/a><\/li>\n\t<\/ul>\n<\/li>\n\t<li id=\"menu-item-857\" class=\"menu-item menu-item-type-post_type menu-item-object-page hfe-creative-menu\"><a href=\"https:\/\/ptrotek.com\/index.php\/what-is-the-metal-cold-working\/\" class = \"hfe-sub-menu-item\">What is the Metal Cold Working?<\/a><\/li>\n\t<li id=\"menu-item-852\" class=\"menu-item menu-item-type-post_type menu-item-object-page hfe-creative-menu\"><a href=\"https:\/\/ptrotek.com\/index.php\/what-is-the-metal-hot-working\/\" class = \"hfe-sub-menu-item\">What is the Metal Hot Working?<\/a><\/li>\n\t<li id=\"menu-item-926\" class=\"menu-item menu-item-type-post_type menu-item-object-page hfe-creative-menu\"><a href=\"https:\/\/ptrotek.com\/index.php\/what-is-the-material-test-report-mtr-mill-test-report\/\" class = \"hfe-sub-menu-item\">What is the Material Test Report (MTR)\/ Mill Test Report?<\/a><\/li>\n\t<li id=\"menu-item-886\" class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-has-children hfe-has-submenu hfe-creative-menu\"><div class=\"hfe-has-submenu-container\" tabindex=\"0\" role=\"button\" aria-haspopup=\"true\" aria-expanded=\"false\"><a aria-expanded=\"false\" href=\"https:\/\/ptrotek.com\/index.php\/what-is-the-nonconformity-report-ncr\/\" class = \"hfe-sub-menu-item\">What is the Nonconformity Report (NCR)?<span class='hfe-menu-toggle sub-arrow hfe-menu-child-1'><i class='fa'><\/i><\/span><\/a><\/div>\n\t<ul class=\"sub-menu\">\n\t\t<li id=\"menu-item-904\" class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-has-children hfe-has-submenu hfe-creative-menu\"><div class=\"hfe-has-submenu-container\" tabindex=\"0\" role=\"button\" aria-haspopup=\"true\" aria-expanded=\"false\"><a aria-expanded=\"false\" href=\"https:\/\/ptrotek.com\/index.php\/dye-penetrant-inspection-procedure\/\" class = \"hfe-sub-menu-item\">Dye Penetrant Inspection Procedure<span class='hfe-menu-toggle sub-arrow hfe-menu-child-2'><i class='fa'><\/i><\/span><\/a><\/div>\n\t\t<ul class=\"sub-menu\">\n\t\t\t<li id=\"menu-item-898\" class=\"menu-item menu-item-type-post_type menu-item-object-page hfe-creative-menu\"><a href=\"https:\/\/ptrotek.com\/index.php\/dry-film-thickness-based-on-sspc-pa-2\/\" class = \"hfe-sub-menu-item\">Dry Film Thickness Based on SSPC-PA 2<\/a><\/li>\n\t\t<\/ul>\n<\/li>\n\t\t<li id=\"menu-item-903\" class=\"menu-item menu-item-type-post_type menu-item-object-page hfe-creative-menu\"><a href=\"https:\/\/ptrotek.com\/index.php\/magnetic-particle-inspection-procedure\/\" class = \"hfe-sub-menu-item\">Magnetic Particle Inspection Procedure<\/a><\/li>\n\t\t<li id=\"menu-item-872\" class=\"menu-item menu-item-type-post_type menu-item-object-page hfe-creative-menu\"><a href=\"https:\/\/ptrotek.com\/index.php\/positive-material-identification-procedure\/\" class = \"hfe-sub-menu-item\">Positive Material Identification Procedure<\/a><\/li>\n\t\t<li id=\"menu-item-905\" class=\"menu-item menu-item-type-post_type menu-item-object-page hfe-creative-menu\"><a href=\"https:\/\/ptrotek.com\/index.php\/radiographic-testing-procedure\/\" class = \"hfe-sub-menu-item\">Radiographic Testing Procedure<\/a><\/li>\n\t\t<li id=\"menu-item-902\" class=\"menu-item menu-item-type-post_type menu-item-object-page hfe-creative-menu\"><a href=\"https:\/\/ptrotek.com\/index.php\/ultrasonic-testing-procedure\/\" class = \"hfe-sub-menu-item\">Ultrasonic Testing Procedure<\/a><\/li>\n\t<\/ul>\n<\/li>\n\t<li id=\"menu-item-906\" class=\"menu-item menu-item-type-post_type menu-item-object-page hfe-creative-menu\"><a href=\"https:\/\/ptrotek.com\/index.php\/what-is-the-nondestructive-testing-map\/\" class = \"hfe-sub-menu-item\">What is the Nondestructive Testing Map?<\/a><\/li>\n\t<li id=\"menu-item-920\" class=\"menu-item menu-item-type-post_type menu-item-object-page hfe-creative-menu\"><a href=\"https:\/\/ptrotek.com\/index.php\/what-is-the-nonessential-variable-in-welding-procedure-specification\/\" class = \"hfe-sub-menu-item\">What is the Nonessential Variable in Welding Procedure Specification?<\/a><\/li>\n\t<li id=\"menu-item-851\" class=\"menu-item menu-item-type-post_type menu-item-object-page hfe-creative-menu\"><a href=\"https:\/\/ptrotek.com\/index.php\/what-is-the-non-ferrous-materials\/\" class = \"hfe-sub-menu-item\">What is the Non-ferrous Materials?<\/a><\/li>\n\t<li id=\"menu-item-850\" class=\"menu-item menu-item-type-post_type menu-item-object-page hfe-creative-menu\"><a href=\"https:\/\/ptrotek.com\/index.php\/what-is-the-normalizing-heat-treatment\/\" class = \"hfe-sub-menu-item\">What is the Normalizing Heat Treatment?<\/a><\/li>\n\t<li id=\"menu-item-884\" class=\"menu-item menu-item-type-post_type menu-item-object-page hfe-creative-menu\"><a href=\"https:\/\/ptrotek.com\/index.php\/what-is-the-plate-lamination-defect\/\" class = \"hfe-sub-menu-item\">What is the Plate Lamination Defect?<\/a><\/li>\n\t<li id=\"menu-item-858\" class=\"menu-item menu-item-type-post_type menu-item-object-page hfe-creative-menu\"><a href=\"https:\/\/ptrotek.com\/index.php\/what-is-the-stainless-steel-cladding\/\" class = \"hfe-sub-menu-item\">What is the Stainless Steel Cladding?<\/a><\/li>\n\t<li id=\"menu-item-919\" class=\"menu-item menu-item-type-post_type menu-item-object-page hfe-creative-menu\"><a href=\"https:\/\/ptrotek.com\/index.php\/what-is-the-supplementary-essential-variable-in-welding-procedure-specification\/\" class = \"hfe-sub-menu-item\">What is the Supplementary Essential Variable in Welding Procedure Specification?<\/a><\/li>\n\t<li id=\"menu-item-856\" class=\"menu-item menu-item-type-post_type menu-item-object-page hfe-creative-menu\"><a href=\"https:\/\/ptrotek.com\/index.php\/what-is-the-weld-destructive-testing\/\" class = \"hfe-sub-menu-item\">What is the Weld Destructive Testing?<\/a><\/li>\n\t<li id=\"menu-item-907\" class=\"menu-item menu-item-type-post_type menu-item-object-page hfe-creative-menu\"><a href=\"https:\/\/ptrotek.com\/index.php\/what-is-the-welding-map\/\" class = \"hfe-sub-menu-item\">What is the Welding Map?<\/a><\/li>\n\t<li id=\"menu-item-917\" class=\"menu-item menu-item-type-post_type menu-item-object-page hfe-creative-menu\"><a href=\"https:\/\/ptrotek.com\/index.php\/what-is-the-welding-performance-qualification-wpq\/\" class = \"hfe-sub-menu-item\">What is the Welding Performance Qualification (WPQ)?<\/a><\/li>\n\t<li id=\"menu-item-921\" class=\"menu-item menu-item-type-post_type menu-item-object-page hfe-creative-menu\"><a href=\"https:\/\/ptrotek.com\/index.php\/what-is-the-welding-procedure-qualification-record-pqr\/\" class = \"hfe-sub-menu-item\">What is the Welding Procedure Qualification Record (PQR)?<\/a><\/li>\n\t<li id=\"menu-item-923\" class=\"menu-item menu-item-type-post_type menu-item-object-page hfe-creative-menu\"><a href=\"https:\/\/ptrotek.com\/index.php\/what-is-the-welding-procedure-specification-wps\/\" class = \"hfe-sub-menu-item\">What is the Welding Procedure Specification (WPS)?<\/a><\/li>\n<\/ul>\n<\/li>\n<li id=\"menu-item-1535\" class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-has-children parent hfe-has-submenu hfe-creative-menu\"><div class=\"hfe-has-submenu-container\" tabindex=\"0\" role=\"button\" aria-haspopup=\"true\" aria-expanded=\"false\"><a aria-expanded=\"false\" href=\"https:\/\/ptrotek.com\/index.php\/other\/\" class = \"hfe-menu-item\">Other<span class='hfe-menu-toggle sub-arrow hfe-menu-child-0'><i class='fa'><\/i><\/span><\/a><\/div>\n<ul class=\"sub-menu\">\n\t<li id=\"menu-item-875\" class=\"menu-item menu-item-type-post_type menu-item-object-page hfe-creative-menu\"><a href=\"https:\/\/ptrotek.com\/index.php\/above-ground-storage-tank-inspection\/\" class = \"hfe-sub-menu-item\">Above Ground Storage Tank Inspection<\/a><\/li>\n\t<li id=\"menu-item-835\" class=\"menu-item menu-item-type-post_type menu-item-object-page hfe-creative-menu\"><a href=\"https:\/\/ptrotek.com\/index.php\/api-source-inspector-exam-preparatory-training-course\/\" class = \"hfe-sub-menu-item\">API Source Inspector Exam \/ Preparatory Training Course<\/a><\/li>\n\t<li id=\"menu-item-934\" class=\"menu-item menu-item-type-post_type menu-item-object-page hfe-creative-menu\"><a href=\"https:\/\/ptrotek.com\/index.php\/bs-std-packing-procedure\/\" class = \"hfe-sub-menu-item\">BS STD Packing Procedure<\/a><\/li>\n\t<li id=\"menu-item-870\" class=\"menu-item menu-item-type-post_type menu-item-object-page hfe-creative-menu\"><a href=\"https:\/\/ptrotek.com\/index.php\/boiler-inspection\/\" class = \"hfe-sub-menu-item\">Boiler Inspection<\/a><\/li>\n\t<li id=\"menu-item-895\" class=\"menu-item menu-item-type-post_type menu-item-object-page hfe-creative-menu\"><a href=\"https:\/\/ptrotek.com\/index.php\/chloride-testing-bresle-bresle-patch-method\/\" class = \"hfe-sub-menu-item\">Chloride Testing \/ Bresle Bresle Patch Method<\/a><\/li>\n\t<li id=\"menu-item-897\" class=\"menu-item menu-item-type-post_type menu-item-object-page hfe-creative-menu\"><a href=\"https:\/\/ptrotek.com\/index.php\/coating-inspection\/\" class = \"hfe-sub-menu-item\">Coating Inspection<\/a><\/li>\n\t<li id=\"menu-item-935\" class=\"menu-item menu-item-type-post_type menu-item-object-page hfe-creative-menu\"><a href=\"https:\/\/ptrotek.com\/index.php\/construction-contractor-quality-control-plan\/\" class = \"hfe-sub-menu-item\">Construction Contractor Quality Control Plan<\/a><\/li>\n\t<li id=\"menu-item-932\" class=\"menu-item menu-item-type-post_type menu-item-object-page hfe-creative-menu\"><a href=\"https:\/\/ptrotek.com\/index.php\/container-shipping-seals\/\" class = \"hfe-sub-menu-item\">Container Shipping Seals<\/a><\/li>\n\t<li id=\"menu-item-952\" class=\"menu-item menu-item-type-post_type menu-item-object-page hfe-creative-menu\"><a href=\"https:\/\/ptrotek.com\/index.php\/corrective-action-plan-template\/\" class = \"hfe-sub-menu-item\">Corrective Action Plan Template<\/a><\/li>\n\t<li id=\"menu-item-948\" class=\"menu-item menu-item-type-post_type menu-item-object-page hfe-creative-menu\"><a href=\"https:\/\/ptrotek.com\/index.php\/establishment-inspection-report\/\" class = \"hfe-sub-menu-item\">Establishment Inspection Report<\/a><\/li>\n\t<li id=\"menu-item-864\" class=\"menu-item menu-item-type-post_type menu-item-object-page hfe-creative-menu\"><a href=\"https:\/\/ptrotek.com\/index.php\/factory-acceptance-test-fat-test\/\" class = \"hfe-sub-menu-item\">Factory Acceptance Test (FAT Test)<\/a><\/li>\n\t<li id=\"menu-item-878\" class=\"menu-item menu-item-type-post_type menu-item-object-page hfe-creative-menu\"><a href=\"https:\/\/ptrotek.com\/index.php\/fin-tube-heat-exchanger-inspection\/\" class = \"hfe-sub-menu-item\">Fin Tube Heat Exchanger Inspection<\/a><\/li>\n\t<li id=\"menu-item-946\" class=\"menu-item menu-item-type-post_type menu-item-object-page hfe-creative-menu\"><a href=\"https:\/\/ptrotek.com\/index.php\/finished-goods-inspection\/\" class = \"hfe-sub-menu-item\">Finished Goods Inspection<\/a><\/li>\n\t<li id=\"menu-item-881\" class=\"menu-item menu-item-type-post_type menu-item-object-page hfe-creative-menu\"><a href=\"https:\/\/ptrotek.com\/index.php\/heat-exchanger-inspection\/\" class = \"hfe-sub-menu-item\">Heat Exchanger Inspection<\/a><\/li>\n\t<li id=\"menu-item-860\" class=\"menu-item menu-item-type-post_type menu-item-object-page hfe-creative-menu\"><a href=\"https:\/\/ptrotek.com\/index.php\/material-inspection-receiving-report\/\" class = \"hfe-sub-menu-item\">Material Inspection Receiving Report<\/a><\/li>\n\t<li id=\"menu-item-899\" class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-has-children hfe-has-submenu 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href=\"https:\/\/ptrotek.com\">\n\t\t\t\t\t\t<h1 class=\"elementor-heading-title elementor-size-default\">\n\t\t\t\t\t\t\t\t\n\t\t\t\tCentrifugal Compressor Aerodynamic Testing  \n\t\t\t<\/h1 > \n\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-93f5cf8 elementor-hidden-tablet elementor-hidden-phone elementor-widget elementor-widget-spacer\" data-id=\"93f5cf8\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-68b9147b elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"68b9147b\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-67fc067b\" data-id=\"67fc067b\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-13e5f768 elementor-widget elementor-widget-text-editor\" data-id=\"13e5f768\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\n<p>Centrifugal Compressor Aerodynamics testing is performed based on ASME PTC 10 -1997 as per API Std. 617 requirements. This article provides you with information about this test.<\/p>\n\n\n\n<p>The standard requires minimum 5 datapoints shall be taken for each shaft speed including of surge point and overload point and the performance curve shall be provided by Isentropic head vs. volumetric flowrate. &nbsp;The isentropic head will be on the verticle axis and volumetric flow in the horizontal axis.&nbsp;<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/www.inspection-for-industry.com\/images\/compressor_performance_test.jpg\" alt=\"\"\/><\/figure>\n\n\n\n<p><strong>What is the surge point on centrifugal compressor aerodynamic testing?<\/strong>&nbsp;The volumetric flow rate is too much low that causes instability in the compressor. This situation happens by reducing flowrate through turning discharge valve &#8220;near to close.&#8221; &nbsp;You experience high noise and vibration at this flowrate in the compressor.&nbsp;<\/p>\n\n\n\n<p><strong>What is the overload point&nbsp;on centrifugal compressor aerodynamic testing?&nbsp;<\/strong>The highest amount of volumetric flowrate that compressor performance curve ends (from right side of the curve). This point also is named choke point. &nbsp;<\/p>\n\n\n\n<p>The performance curve shall provide information such as isotropic head, efficiency, power consumption, etc. from the surge point to the overload (choke) point.&nbsp;<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Centrifugal Compressor Aerodynamic Testing by Air<\/strong><\/h2>\n\n\n\n<p>The compressor is subjected to the aerodynamic testing at the open air condition. It meanes the suction and discharge of the compressor are open to the atmosphere.&nbsp;<\/p>\n\n\n\n<p>The compressor runs at the design speed, and the test is started with maximum flow rate (this is the overload (choke) point with the maximum opening of discharge valve). Then the isentropic head is measured at the overload point. (please note the isentropic head represents the discharge pressure)<\/p>\n\n\n\n<p>In next step, the volumetric flowrate is reduced a little bit (by the adjusting of discharge valve), and another point is taken, and the isentropic head is recorded at this point as well.&nbsp;<\/p>\n\n\n\n<p>The process is continued until 5 data points are taken. It means you have 5 known flowrates and 5 known isentropic heads and you can draw the head-flowrate curve. The test engineer runs the compressor at each datapoint for 30 minutes to get everything stabilized and then gets the readings.&nbsp;<\/p>\n\n\n\n<p>The process is continued to identify surge point. The volumetric head is reduced until a high noise and spike in the vibration observed. This point is the surge point, and the head is measured at this point. This point is the lowest flowrate and highest isentropic head, and as mention in above, the compressor is unstable at this flowrate value.&nbsp;<\/p>\n\n\n\n<p>The above-mentioned process gives you one curve, but this is not enough, the test shall be repeated in different shaft speeds and datapoints shall be taken for each shaft speed in a similar way. The test is conducted in several shaft speed, and you can draw the surge like the following figure.&nbsp;<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/www.inspection-for-industry.com\/images\/centrifugal_compressor_aerodynamic_testing.jpg\" alt=\"\"\/><\/figure>\n\n\n\n<p>Now, you need to verify the test result. You will not be able to use of datasheet information since the datasheet information provided for natural gas with field operating condition, but you tested with air. Besides your compressor suction pipe and discharge pipe was open to the atmosphere. So the condition between the test and field was completely different, and datasheet can not be used for test result verification.&nbsp;<\/p>\n\n\n\n<p>The manufacturer design engineer provides an estimated air performance test curve (obtained from engineering calculation) that you can use for verification. The curve shall be verified aginst approved procedure and indicated acceptance range. The isentropic head can have plus\/minus 2% variation normally.&nbsp;<\/p>\n\n\n\n<p>So you need to put &#8220;estimated curve&#8221; and &#8220;tested curve&#8221; side by side and match them and see how much isentropic head is different in individual flowrates values.<\/p>\n\n\n\n<p>In this verification; 1) &#8220;rated flowrate&#8221; and its isentropic head at the rated shaft speed 2) surge points &#8220;flowrates&#8221; and &#8220;isentropic heads&#8221; shall be verified.&nbsp;<\/p>\n\n\n\n<p>This is the way we check the test report. However, the testing software indicates the variation between the estimated curve and tested curve by values and numbers in tabulated format.&nbsp;<\/p>\n\n\n\n<p>The equivalent values obtained from the test can be converted to the field values by engineering calculation that normally is done by engineering software.<\/p>\n\n\n\n<p>The power consumption and vibration values also are provided and shall be checked with estimated values. The vibration FFT plots can be verified through API 617 values.&nbsp;<\/p>\n\n\n\n<p>The compressor efficiency cannot be measured by centrifugal compressor aerodynamic test by air medium and with the open air system.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Closed Loop Test in the Centrifugal Compressor Aerodynamic Testing<\/strong><\/h2>\n\n\n\n<p>Based on customer requirements, the closed loop test might be done in addition to the air test. The compressor efficiency can be measured by closed loop test, and testing condition and variables are much closer to the actual parameters in the field.&nbsp;<\/p>\n\n\n\n<p>The difference between the centrifugal compressor aerodynamic testing by air and closed loop system is on the suction and discharge pipes. In closed loop system, the compressor suction connected to the gas source by the inlet pipe and compressor discharge connected to the closed loop system that simulates actual condition.<\/p>\n\n\n\n<p>&nbsp;The test gas can not be real field gas because we can not have that gas at the manufacturing facility. Typically nitrogen, propane or carbon dioxide are used as the test gas. Again since the gas is different, the simulation is performed to identify equivalent field values.<\/p>\n\n\n\n<p>The performance curve shall be verified aginst of the estimated closed loop performance test curve. The efficiency can be measured and is converted to the equivalent field value.&nbsp;<\/p>\n\n\n\n<p>The closed loop test gives you this opportunity to verify the test results with approved datasheet values. By checking test report with the datasheet, &nbsp;you make sure the compressor have the same specification as indicated in the datasheet and other purchase documents.<\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>Centrifugal Compressor Aerodynamics testing is performed based on ASME PTC 10 -1997 as per API Std. 617 requirements. This article provides you with information about this test. The standard requires minimum 5 datapoints shall be taken for each shaft speed including of surge point and overload point and the performance curve shall be provided by [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"site-sidebar-layout":"default","site-content-layout":"default","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"disabled","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"class_list":["post-769","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/ptrotek.com\/index.php\/wp-json\/wp\/v2\/pages\/769","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ptrotek.com\/index.php\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/ptrotek.com\/index.php\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/ptrotek.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/ptrotek.com\/index.php\/wp-json\/wp\/v2\/comments?post=769"}],"version-history":[{"count":2,"href":"https:\/\/ptrotek.com\/index.php\/wp-json\/wp\/v2\/pages\/769\/revisions"}],"predecessor-version":[{"id":1782,"href":"https:\/\/ptrotek.com\/index.php\/wp-json\/wp\/v2\/pages\/769\/revisions\/1782"}],"wp:attachment":[{"href":"https:\/\/ptrotek.com\/index.php\/wp-json\/wp\/v2\/media?parent=769"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}