{"id":627,"date":"2019-11-06T08:42:30","date_gmt":"2019-11-06T08:42:30","guid":{"rendered":"https:\/\/ptrotek.com\/index.php\/centrifugal-compressor-testing\/"},"modified":"2026-09-09T19:11:20","modified_gmt":"2026-09-09T11:11:20","slug":"centrifugal-compressor-testing","status":"publish","type":"page","link":"https:\/\/ptrotek.com\/index.php\/centrifugal-compressor-testing\/","title":{"rendered":"Centrifugal Compressor Testing"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-page\" data-elementor-id=\"627\" class=\"elementor elementor-627\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-82c3c1c elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"82c3c1c\" 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 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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: Comprehensive Surveillance &amp; Quality Verification<\/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 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 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\"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 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 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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 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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 href=\"https:\/\/ptrotek.com\/index.php\/vessel-pressure-testing\/\" class = \"hfe-menu-item\">Vessel Pressure Testing: Design, Fabrication &amp; Inspection Guide<span class='hfe-menu-toggle sub-arrow hfe-menu-child-0'><i class='fa'><\/i><\/span><\/a><\/div>\n<ul 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hfe-creative-menu\"><a href=\"https:\/\/ptrotek.com\/index.php\/pressure-vessel-dimension-inspection\/\" class = \"hfe-sub-menu-item\">Pressure Vessel Dimension Inspection: Design, Fabrication &amp; Inspection Guide<\/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: Design, Fabrication &amp; Inspection Guide<\/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: Design, Fabrication &amp; Inspection Guide<\/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 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href=\"https:\/\/ptrotek.com\/index.php\/surface-profile-acceptance-criteria-replica-tape-inspection-report-template\/\" class = \"hfe-sub-menu-item\">Surface Profile Acceptance Criteria &amp; Replica Tape Inspection Report Template<\/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 href=\"https:\/\/ptrotek.com\/index.php\/third-party-inspection-comprehensive-surveillance-quality-verification\/\" class = \"hfe-menu-item\">Third Party Inspection: Comprehensive Surveillance &amp; Quality Verification<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: Comprehensive Surveillance &amp; Quality Verification<\/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: Comprehensive Surveillance &amp; Quality Verification<\/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: Comprehensive Surveillance &amp; Quality Verification<\/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: Comprehensive Surveillance &amp; Quality Verification<\/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: Comprehensive Surveillance &amp; Quality Verification<\/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: Comprehensive Surveillance &amp; Quality Verification<\/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: Comprehensive Surveillance &amp; Quality Verification<\/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: Comprehensive Surveillance &amp; Quality Verification<\/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 href=\"https:\/\/ptrotek.com\/index.php\/welding-inspection\/\" class = \"hfe-menu-item\">Welding Inspection: Engineering Principles &amp; AWS\/ASME Requirements<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: Engineering Principles &amp; AWS\/ASME Requirements<\/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: Engineering Principles &amp; AWS\/ASME Requirements<\/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: Surface Preparation &amp; Coating Inspection Guide<\/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: Engineering Principles &amp; AWS\/ASME Requirements<\/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: Engineering Principles &amp; AWS\/ASME Requirements<\/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: Engineering Principles &amp; AWS\/ASME Requirements<\/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 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: Engineering Principles &amp; AWS\/ASME Requirements<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: Engineering Principles &amp; AWS\/ASME Requirements<\/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: Engineering Principles &amp; AWS\/ASME Requirements<\/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: Engineering Principles &amp; AWS\/ASME Requirements<\/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 Metal Cold Working: Engineering Principles &amp; AWS\/ASME Requirements<\/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: Engineering Principles &amp; AWS\/ASME Requirements<\/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 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 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: Surface Preparation &amp; Coating Inspection Guide<\/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: Engineering Principles &amp; AWS\/ASME Requirements<\/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: Engineering Principles &amp; AWS\/ASME Requirements<\/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: Engineering Principles &amp; AWS\/ASME Requirements<\/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: Engineering Principles &amp; AWS\/ASME Requirements<\/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: Engineering Principles &amp; AWS\/ASME Requirements<\/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: Engineering Principles &amp; AWS\/ASME Requirements<\/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: Engineering Principles &amp; AWS\/ASME Requirements<\/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: Engineering Principles &amp; AWS\/ASME Requirements<\/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: Engineering Principles &amp; AWS\/ASME Requirements<\/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: Engineering Principles &amp; AWS\/ASME Requirements<\/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: Engineering Principles &amp; AWS\/ASME Requirements<\/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: Engineering Principles &amp; AWS\/ASME Requirements<\/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 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: Surface Preparation &amp; Coating Inspection Guide<\/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: Surface Preparation &amp; Coating Inspection Guide<\/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: Comprehensive Surveillance &amp; Quality Verification<\/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 hfe-creative-menu\"><div class=\"hfe-has-submenu-container\" tabindex=\"0\" role=\"button\" aria-haspopup=\"true\" aria-expanded=\"false\"><a href=\"https:\/\/ptrotek.com\/index.php\/paint-inspection-and-test-plan\/\" class = \"hfe-sub-menu-item\">Paint Inspection And Test Plan: Surface Preparation &amp; Coating Inspection Guide<span class='hfe-menu-toggle sub-arrow hfe-menu-child-1'><i class='fa'><\/i><\/span><\/a><\/div>\n\t<ul 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class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-divider\">\n\t\t\t<span class=\"elementor-divider-separator\">\n\t\t\t\t\t\t<\/span>\n\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-9fcf723 elementor-widget elementor-widget-page-title\" data-id=\"9fcf723\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"page-title.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\n\t\t<div class=\"hfe-page-title hfe-page-title-wrapper elementor-widget-heading\">\n\n\t\t\t\t\t\t\t\t\t\t\t<a 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 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-1e860448 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"1e860448\" 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-2ab77b21\" data-id=\"2ab77b21\" 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-4e2a0db elementor-widget elementor-widget-text-editor\" data-id=\"4e2a0db\" 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 class=\"wp-block-paragraph\">The centrifugal compressor testing article provides information about the centrifugal compressor aerodynamic testing, mechanical running test, impeller overspeed test, casing inspection and casing hydrostatic testing, impeller and rotor dynamic balancing, vibration testing and analysis and gas leakage test. You may want to review the&nbsp;<a href=\"https:\/\/ptrotek.wordpress.com\/third-party-inspection-for-centrifugal-compressor-procedure\/\" target=\"_blank\" rel=\"noopener\">centrifugal compressor inspection procedure<\/a>&nbsp;and corresponding&nbsp;<a href=\"https:\/\/ptrotek.wordpress.com\/inspection-and-test-plan-for-centrifugal-compressor-sample\/\" target=\"_blank\" rel=\"noopener\">inspection and test plan<\/a>. &nbsp;<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Centrifugal Compressor Aerodynamic Testing<\/strong><\/h2>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"alignright is-resized\"><img fetchpriority=\"high\" decoding=\"async\" src=\"https:\/\/www.inspection-for-industry.com\/images\/239xNxCompressor_mechanical_Running_test.jpg.pagespeed.ic.2rK98055jE.webp\" alt=\"\" width=\"260\" height=\"362\"\/><\/figure><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">The&nbsp;<a href=\"https:\/\/ptrotek.wordpress.com\/centrifugal-compressor-aerodynamic-testing\/\" target=\"_blank\" rel=\"noopener\">centrifugal compressor aerodynamic testing<\/a>&nbsp;is performed after completion of the assembly. The API Std. 617 requires that the aerodynamic testing being conducted based on the requirements of ASME PTC-1997.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Based on the centrifugal compressor testing requirement minimum 5 datapoints including surge and choke points shall be taken, and isentropic head vs. volumetric flow be plotted. The test shall be repeated for different shaft speed, and similarly, the surge points shall be identified.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The plotted aerodynamic performance curve shall be verified aginst approved compressor datasheet and procedures to make sure is meeting the acceptance range for the isentropic head, surge points, efficiency and power consumption.&nbsp;<br><\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Centrifugal Compressor Mechanical Running Test<\/strong>&nbsp;<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">The mechanical running test is performed after Aerodynamic performance test. In the mechanical running test, we are testing mechanical operation of the compressor. The test shall be done based on approved test procedure.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The centrifugal comressor testing procedure or approved datasheet shall be used for acceptance criteria. The test starts with minimum speed almost at 1000 rpm to identify any abnormal issue and then increased to 100 % of MCS (maximum continuous speed) at the rate increment of 10%.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">For example, if the rotor speed (MCS) is 12000 rpm, in the first stage the rotor speed is brought to 1200 rpm and then stays at this speed for a while and then is increased to the 2400 rpm, and this process continues until reaches to 12000 rpm.<br><\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/www.inspection-for-industry.com\/images\/xCentrifuga_compressor_testing.jpg.pagespeed.ic.T2Tn2WczTu.webp\" alt=\"\"\/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">For example, if the rotor speed (MCS) is 12000 rpm, in the first stage the rotor speed is brought to 1200 rpm and then stays at this speed for a while and then is increased to the 2400 rpm, and this process continues until reaches to 12000 rpm. &nbsp;<br><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Subsequently, the rotor speed shall be increased to the trip speed and run for 15 min. The trip speed is 115% of MCS speed, and MCS speed is the highest rotor speed which designed and tested and capable of continuous operation.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">After this 15 min, the rotor speed is reduced to the 100 MCS and compressor runs for 4 hours. When the compressor reached to MCS speed shall run for 30 minutes to get all variables such as oil temperature, pressure, bearing metal temperature and vibration levels stabilized.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">fter stabilization, the test technician starts the collection of measurements in each 10 or 15 minutes. At the end of the test, the mechanical running test result is provided in the tabulated format.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The bearing metal temperature, lube oil temperature and pressure, seal oil temperature and pressure, cooling water temperature and pressure, bearing housing vibration, shaft vibration, and power consumption are the parameters that are measured in the mechanical running test.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">As per API 617, the job bearings, job vibration probes and job seals shall be used for the mechanical running test.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The collected measurements are provided to the inspector at the end of the test, and it is the responsibility of the inspector to verify the measurement aginst acceptance criteria.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">As mentioned the acceptance criteria could be found in the approved procedure or compressor datasheet. For vibration acceptance criteria the test procedure or API 617 directly might be used depending on the project specification.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">During the mechanical running test, the inspector shall make a visual inspection and walk around of compressor and make sure there is no leak from piping joints or compressor connections, and there is no abnormal noise, etc.&nbsp;<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Centrifugal Compressor Impeller Overspeed Test (Spin Test)<\/strong><\/h2>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"alignright is-resized\"><img decoding=\"async\" src=\"https:\/\/www.inspection-for-industry.com\/images\/184xNxcompressor-impeller-overspeed-test.jpg.pagespeed.ic.pKF9QinUL0.webp\" alt=\"\" width=\"213\" height=\"283\"\/><\/figure><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">The compressor impeller overspeeding test is performed before rotor assembly.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>In the first step,<\/strong>&nbsp;The impeller is subjected to the thorough dimensional inspection before the test. The inside diameter (bore), outside diameter and eye seal are measured and documented.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>In the second step,<\/strong>&nbsp;the impeller mounted in the machine in a vacuum chamber (to avoid windage) and then is rotated at the speed of 115% of the MCS for 1 minutes. The impeller is subjected to the strong centrifugal force during this 1 minutes.&nbsp;<br><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>In the third Step,<\/strong>&nbsp;a second dimensional inspection shall be performed and checked against first dimensional inspection. The change in the dimension is inevitable, but the change shall be within the acceptance range.&nbsp;<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/www.inspection-for-industry.com\/images\/compressor-impeller-dimensionl-check-after-overspeed-test.jpg\" alt=\"\"\/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">API 617 is not providing acceptance range and refers that to the manufacturer specification. &nbsp;The inspector shall review before and after dimensional inspection reports and check that aginst manufacturer acceptance criteria and make sure the change in dimension fall within acceptance range. &nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>In the fourth step,<\/strong>&nbsp;the impeller is subjected to the dye penetration or magnetic particle test to make sure no crack developed during impeller overspeeding test.&nbsp;<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Centrifugal Compressor Casing Inspection<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">The compressor casing &#8220;<a href=\"https:\/\/ptrotek.wordpress.com\/what-is-the-material-test-report-mtr-mill-test-report\/\" target=\"_blank\" rel=\"noopener\">material test report (MTR)<\/a>&#8221; shall be reviewed. The casing either is made by casting or forging. The material test report shall be verified aginst assigned ASTM material standard and make sure the chemical composition,&nbsp;<a href=\"https:\/\/ptrotek.wordpress.com\/what-is-the-destructive-testing\/\" target=\"_blank\" rel=\"noopener\">mechanical properties<\/a>&nbsp;e.g. tensile strength, yield strength, elongation and reduction of area are within acceptance range.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The heat treatment type, holding time and temperature also shall be verified. In some material type, the hardness value shall be measured by Brinell or Rockwell technique. You should make sure you can locate the hardness value in the MTR, and the value is less than maximum allowed value.&nbsp;<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/www.inspection-for-industry.com\/images\/compressor-casing-inspection.jpg\" alt=\"\"\/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">The API 617, contrary to the&nbsp;<a href=\"https:\/\/ptrotek.wordpress.com\/pump-casing-inspection\/\" target=\"_blank\" rel=\"noopener\">API 610 (for pumps)<\/a>&nbsp;is not addressing the required visual inspection and the nondestructive testing amount in compressor casing. The amount of the testing depends on the agreement between compressor manufacturer and customer but addresses the test methods and acceptance criteria for NDE testing.<br><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">You should check approved inspection and test plan to see what NDE testing being considered for casing inspection and make sure you can locate those tests in the casing MTR.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">API 617 requires the PT test be performed by test method addressed at ASTM E165, MT based on ASTM E709, UT based on ASTM A609 (casting) and ASTM A388 (forging) and RT based on ASTM E94.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The above mentioned ASTM standards are the test procedures, and you can not find acceptance criteria there. The API 617 requires the test interpretation be performed based on ASME Code Section VIII Div. 1 Appendix 7 (for Casting). This appendix covers all above tests e.g. PT, MT, RT, and UT.&nbsp;<\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"alignright\"><img decoding=\"async\" src=\"https:\/\/www.inspection-for-industry.com\/images\/Casting_RT_TEST.jpg\" alt=\"\"\/><\/figure><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">If you refer to this appendix, you will notice this appendix in some tests refers you to some other ASTM standards. The most important ones are ASTM E446, ASTM E 186 and ASTM E280 for RT film interpretation.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">These 3 standards have adjunct comparator radiographs that shall be used in film interpretation. The RT technician shall match the actual compressor RT films with these reference radiographs and decide about acceptability or unacceptability of the films.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">You should review the NDE test report and make sure the NDE tests being interpreted and reported aginst correct assigned standard. As you might know, an indication might be a defect in one standard and be an acceptable imperfection based the other standard.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The acceptance criteria for welded components such as nozzles and attachments are referenced to ASME Section VIII Div.1 UW 51 and 52 for RT and Appendix 6 and 8 for PT and MT and appendix 12 for UT.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">After successful completion of the Material Test Report Review (NDE reports included), you need to witness the hydrostatic testing.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Casing Hydrostatic Testing @ Centrifugal Compressor Testing<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">The compressor casing shall be subjected to the hydrostatic testing, similar to the other rotating equipment; the casing shall be tested at 1.5 times of maximum allowable working pressure.<br><\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/www.inspection-for-industry.com\/images\/compressor-casing-hydrostatic-testing.jpg\" alt=\"\"\/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">You as inspector or customer representative do not need to calculate the test pressure. The test pressure should be read from approved hydrostatic test procedure or approved compressor datasheet. The test result shall be considered satisfactory if no leak or seepage observed in 30 minutes (minimum time that compressor casing shall be under pressure).&nbsp;<br><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The chloride content shall be less than 50 ppm if the casing material is the stainless steel. The pressure gage shall be calibrated, and you should verify calibration and expiration dates on the gage label and gage certificate.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The preferable pressure range gage is two times of the test pressure but in no case shall be less than 1.5 times and more than 4 times of the test pressure.&nbsp;<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Gas Leakage Test @&nbsp;<\/strong><strong>Centrifugal Compressor Testing&nbsp;<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">The centrifugal compressor gas leakage test shall be performed after successful completion of the mechanical running test. The compressor shall be pressurized with inert gas to the maximum sealing pressure for 30 minutes. The test can be considered as the last test which is performed in centrifugal compressor testing.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The compressor end seals (contract seals) shall in the installed condition. The compressor shall be subjected to soap water bubble test. The bubble test can be done based on the requirement of the ASME Section V &#8211; Article 10 &#8211; Leak testing.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Household detergent shall not be used for soapy water solution. The specific leak test solution shall be purchased and used for the test. The test result would be satisfactory if no bubble development observed from joints, connections, etc.&nbsp;<br><\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Vibration Test &amp; Analysis @ Centrifugal Compressor Testing<\/strong><\/h2>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/www.inspection-for-industry.com\/images\/compressor_shaft_vibration_plot.jpg\" alt=\"\"\/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">The API 617 only requires the&nbsp;<a href=\"https:\/\/ptrotek.wordpress.com\/centrifugal-compressor-vibration-testing-and-analysis\/\" target=\"_blank\" rel=\"noopener\">centrifugal compressor vibration test and analysis<\/a>&nbsp;being performed at shaft adjacent to the bearings during the aerodynamic performance test and in the mechanical running test. The proximitor probe is used for measurement and usually is handled by 4 probes, two for suction bearings X and Y axises and two for discharge bearing same X and Y axises.<br><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">You may also review the&nbsp;<a href=\"https:\/\/ptrotek.wordpress.com\/centrifugal-compressor-vibration-testing-and-analysis\/\" target=\"_blank\" rel=\"noopener\">Third Party Inspection for Centrifugal Compressor<\/a>&nbsp;article which can be considered a inspection instruction for centrifugal compressor testing and inspection.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">You may also need a sample&nbsp;<a href=\"https:\/\/ptrotek.wordpress.com\/inspection-and-test-plan-for-centrifugal-compressor-sample\/\" target=\"_blank\" rel=\"noopener\">centrifugal compressor inspection and test plan<\/a>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The following content provides a sample general centrifugal compressor testing procedure which might be useful. The acceptance criteria have not been addressed in this test procedure. This is a very brief and general procedure.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Applicable Standards @ Centrifugal Compressor Testing<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The applicable standards for centrifugal compressor testing are:<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>API Standard 617; Centrifugal Compressor for Petroleum, Chemical and Gas Service Industries<\/li><li>ASME PTC 10; Performance Test Code on Compressors and Exhausters<\/li><li>BS EN ISO 5167-2; Measurement of fluid flow by means of pressure differential devices inserted in circular cross-section conduits running full &#8211; Part 2: Orifice plates<\/li><li>BS ISO 5389 Turbo compressors Performance Test Code<\/li><\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Required Data for Centrifugal Compressor Mechanical Running Test<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Following data need to be extracted for centrifugal compressor testing from design documents, datasheet and operating manual and to be available during the test.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Specified Operating Speeds<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>Normal Operating Speed<\/li><li>Minimum Operating Speed<\/li><li>Maximum Continuous Speed<\/li><li>Trip Speed<\/li><\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Maximum Shaft Vibration<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>At Maximum Continuous Speed<\/li><li>At Trip Speed<\/li><\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Lube Oil Data<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>Oil Viscosity Class<\/li><li>Oil Inlet Temperature<\/li><li>Oil Inlet Pressure<\/li><li>Maximum Oil Volume Flow Of Compressor<\/li><\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Shaft Seals<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>Seal Type<\/li><li>Seal Medium<\/li><\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Preparation for Centrifugal Compressor Mechanical Running Test<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Typically a checklist is used to ensure all items are based on design and actual operating condition.<br><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The following components are used from Centrifugal Compressor Testing Stand (Not Contract Items)<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>Drive unit (Electric motor)<\/li><li>Gear box<\/li><li>Coupling (poss. with adapter)<\/li><li>Intercooler<\/li><li>Oil unit<\/li><li>Process gas piping<\/li><li>Instruments<\/li><li>Vibration monitoring system<\/li><li>Data acquisition equipment<\/li><\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">The following components are used from centrifugal compressor (original)<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>Coupling (poss. with adapter) X<\/li><li>Seal gas panel<\/li><li>Instruments<\/li><li>Shaft vibration measurement equipment<\/li><\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Note: The coupling and instruments are used from both systems i.e. test stand and original components of compressor<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Centrifugal Compressor Testing &#8211; Mechanical Running Test<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The mechanical running test is done with the following sequence:<\/p>\n\n\n\n<ol class=\"wp-block-list\"><li>The speed increase from standstill up to minimum driver control speed.<\/li><li>Speed increase in steps of approx. 10% of maximum continuous speed up to maximum continuous speed (MCS) under consideration of the lateral natural frequencies.<\/li><li>Continuations of operation until lube oil and bearing temperatures have stabilized.<\/li><li>Speed increases up to trip speed. Test runs for 15 minutes at trip. Babbitt metal temperatures, oil inlet and outlet temperatures and pressures and the overall oil volume flow are measured and recorded once. Shaft vibrations are measured and recorded once at all contact measuring locations.<\/li><li>Speed deceleration to MCS. Test runs for 4 hours at MCS. Babbitt metal temperatures, oil inlet and outlet temperatures and pressures and the overall oil volume flow are measured and recorded in intervals of about 20 minutes. Inlet and outlet temperatures and pressures of the handled fluid are measured and recorded. Shaft vibrations are measured and recorded at all existing measurement points in intervals of about 20 minutes. A vibration spectra analysis is carried out approximately in the middle of the 4 hours test run.<\/li><li>Speed increase up to trip speed.<\/li><li>Speed deceleration to final standstill.<\/li><\/ol>\n\n\n\n<p class=\"wp-block-paragraph\">Unfiltered and filtered displacement amplitudes and the corresponding phase angles will be recorded and plotted vs. speed during coast down. Bode plots during coast down.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">After completion of the mechanical running test and after sufficient cooling-down the compressor will be checked according to the inspection and test plan.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Centrifugal Compressor Testing &#8211; Vibration Measurements &amp; Analysis<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Shaft vibrations and axial displacements are measured. Vibration measurements are carried out with the vendor measuring system. All other necessary instrumentation for vibration analysis needs to be available by centrifugal compressor vendors.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">For assessment of the allowable amplitudes of the shaft vibrations according to design the monitoring systems installed in the test stand are used. For visualization and preparing plots a mobile diagnostic system are used.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Run out is determined and recorded. Only these values are binding for the machine. At low speed the shaft vibration monitor only indicates the slow-roll-signal.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">If the measured slow-roll-signal values during the test run exceed distinctly the specified run out values, run out are controlled and, if necessary, refurbished after completion of the test run without repeating the test run.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Required Data for Thermodynamic Performance Test<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Following data need to be extracted from a centrifugal compressor design book, datasheet and operating manual and to be available for calculations.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Operating Conditions<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>Gas Type<\/li><li>Mass Flow, Wet<\/li><\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Inlet conditions<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>Pressure<\/li><li>Temperature<\/li><li>Relative Humidity<\/li><li>Inlet Volume, Wet<\/li><\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Discharge Conditions<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>Pressure<\/li><li>Temperature<\/li><\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Performance<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>Shaft power at compressor coupling (incl. losses)<\/li><li>Compressor speed<\/li><li>Polytropic head<\/li><li>Polytropic efficiency<\/li><\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Similarly the centrifugal compressor testing medium and related operating parameter need to be identified. N2 normally is used as the test medium. Following also need be specified:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Test Meduim Inlet Condition<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>Pressure<\/li><li>Temperature<\/li><li>Relative Humidity<\/li><li>Gas Constant X Compressibility Factor<\/li><li>Inlet Volume Flow, Dry<\/li><\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Test Meduim Discharge Condition<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>Pressure<\/li><li>Temperature<\/li><\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Performance<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>Gas Power<\/li><li>Compressor Speed<\/li><\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Centrifugal Compressor Testing &#8211; Thermodynamic Performance Test Procedure<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Before starting the thermodynamic performance test the compressor is operated for a sufficient period of time at the calculated test conditions to demonstrate acceptable mechanical operation and stable values of all measurements.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">All instruments are inspected separately and the measured variables in identical measuring planes are compared to each other.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The duration of the test is depending on the time needed to reach steady-state test conditions. This condition is insured by steady-state values of pressures and temperatures.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">An automated data acquisition system is used. The data are recorded, processed and displayed online.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Centrifugal Compressor Testing &#8211; Measuring and Analysis<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Previous to the test all measuring instruments for pressure and temperature are calibrated. On customer&#8217;s request the calibration can be redone after the test for one instrument each for pressure and temperature at the inlet and discharge port.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The inlet and discharge pressures and temperatures are measured on centrifugal compressor testing on the basis of the applicable documents.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The mass flow is measured according to BS EN ISO 5167-2<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The shaft power will be calculated with the heat balance method.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">For the mechanical power losses the design value is used.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The Reynolds Number correction is done in accordance to ICAAMC.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Measuring uncertainty per BS ISO 5389<\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-46d869a elementor-widget elementor-widget-text-editor\" data-id=\"46d869a\" 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<!-- PtroTek High-Authority Technical Guide: Centrifugal Compressor Testing -->\n<!-- Primary Keyword: centrifugal compressor testing -->\n<!-- Standards: ISO 9001 \/ ASME \/ API -->\n<!-- ==================================================================== -->\n\n<article class=\"ptrotek-technical-guide\">\n\n  <!-- Executive Summary -->\n  <section class=\"technical-overview\">\n    <h2>Executive Summary &#038; Industrial Inspection Scope<\/h2>\n    <p>In demanding industrial environments across Oil, Gas, Petrochemical, Offshore, and Heavy Process Infrastructure, rigorous compliance with ISO 9001 \/ ASME \/ API is essential to ensure operational integrity, personnel safety, and compliance with statutory regulatory frameworks. This technical specification provides QA\/QC managers, procurement engineers, welding inspectors, and third-party inspection (TPI) agencies with an authoritative, field-tested guideline for &#8220;Centrifugal Compressor Testing&#8221;.<\/p><p>Ensuring compliance regarding centrifugal compressor testing minimizes the risk of catastrophic asset failures, costly unscheduled shutdowns, and supplier non-conformances. The following technical sections delineate the scope of inspection, mandatory verification protocols, acceptance criteria, documentation deliverables, and root cause mitigation strategies.<\/p>\n  <\/section>\n\n  <!-- Governing Codes & Standards -->\n  <section class=\"regulatory-standards\">\n    <h2>Governing International Engineering Codes &#038; Specifications<\/h2>\n    <p>Verification and validation of Centrifugal Compressor Testing must strictly conform to the latest editions of the following international engineering codes and project specifications:<br\/>\u2022 **Primary Standard Reference:** ISO 9001 \/ ASME \/ API<br\/>\u2022 **Quality Management &#038; Inspection Systems:** ISO 9001:2015 &#038; ISO\/IEC 17020 (Requirements for the operation of various types of bodies performing inspection)<br\/>\u2022 **Material Compliance &#038; Traceability:** EN 10204 Type 3.1 \/ 3.2 Inspection Certificates for metallic and non-metallic pressure-retaining components<br\/>\u2022 **Personnel Qualification:** ASNT SNT-TC-1A \/ ISO 9712 for NDT personnel, CSWIP 3.1 \/ AWS CWI for welding inspection, and NACE \/ AMPP Level 2\/3 for coating and corrosion personnel<br\/>\u2022 **Statutory &#038; Health Safety Directives:** ASME Boiler &#038; Pressure Vessel Code (BPVC), API Standards, OSHA, and regional local authority regulations.<\/p>\n  <\/section>\n\n  <!-- Step-by-step Quality Control Protocol -->\n  <section class=\"inspection-protocol\">\n    <h2>Step-by-Step Quality Control &#038; Inspection Procedure<\/h2>\n    <p>The execution of quality surveillance for <strong>Centrifugal Compressor Testing<\/strong> is structured across four progressive QA\/QC intervention phases:<\/p>\n    \n    \n    <div class=\"protocol-stage\" style=\"margin-bottom: 24px; padding: 18px; border: 1px solid #e2e8f0; border-radius: 8px; background-color: #f8fafc;\">\n      <h3 style=\"color: #0f172a; margin-top: 0;\">Stage 1: Pre-Inspection &#038; Engineering Document Review (Review Point &#8211; R)<\/h3>\n      <p style=\"color: #334155; line-height: 1.6;\">Prior to commencement of any physical activities or manufacturing operations related to Centrifugal Compressor Testing, the contractor or vendor must submit all technical submittals to the Owner or TPI agency for formal review and approval.<\/p>\n      <ul style=\"color: #1e293b; padding-left: 20px; line-height: 1.7;\">\n        <li>Verification of approved Inspection and Test Plan (ITP) identifying all Hold (H), Witness (W), Review (R), and Surveillance (S) intervention points.<\/li>\n        <li>Cross-examination of Material Test Reports (MTR \/ Mill Certificates) against standard design specifications (ISO 9001 \/ ASME \/ API).<\/li>\n        <li>Review and approval of specific Procedure Qualification Records (PQR), Welding Procedure Specifications (WPS), or calibration certificates.<\/li>\n        <li>Verification that all measurement instruments, gauges, and NDT equipment hold valid calibration certificates from ISO\/IEC 17025 accredited calibration laboratories (within 6 to 12 months validity).<\/li>\n      <\/ul>\n    <\/div>\n\n    <div class=\"protocol-stage\" style=\"margin-bottom: 24px; padding: 18px; border: 1px solid #e2e8f0; border-radius: 8px; background-color: #f8fafc;\">\n      <h3 style=\"color: #0f172a; margin-top: 0;\">Stage 2: In-Process Witnessing &#038; Fabrication Control (Witness \/ Hold Point &#8211; W\/H)<\/h3>\n      <p style=\"color: #334155; line-height: 1.6;\">During the active execution phase, the certified inspector performs physical surveillance to ensure strict adherence to certified drawings, manufacturing procedures, and code tolerances.<\/p>\n      <ul style=\"color: #1e293b; padding-left: 20px; line-height: 1.7;\">\n        <li>Verification of material traceability (heat number, heat treatment lot, plate number) transferred accurately onto fabricated components.<\/li>\n        <li>Dimensional verification and visual inspection using calibrated gauges, micrometer depth dials, or laser alignment systems.<\/li>\n        <li>Monitoring ambient environmental parameters (relative humidity, dew point, substrate temperature) when applying surface treatments, welding preheat, or pressure testing.<\/li>\n        <li>Witnessing non-destructive examination (RT, UT, MT, PT, PMI) at specified percentages according to project critical rating and code requirements.<\/li>\n      <\/ul>\n    <\/div>\n\n    <div class=\"protocol-stage\" style=\"margin-bottom: 24px; padding: 18px; border: 1px solid #e2e8f0; border-radius: 8px; background-color: #f8fafc;\">\n      <h3 style=\"color: #0f172a; margin-top: 0;\">Stage 3: Final Acceptance, Pressure\/Performance Testing &#038; Marking (Hold Point &#8211; H)<\/h3>\n      <p style=\"color: #334155; line-height: 1.6;\">The culminating milestone where the fully assembled or completed item is subjected to definitive acceptance tests in the presence of the Owner&#8217;s Third-Party Inspector (TPI).<\/p>\n      <ul style=\"color: #1e293b; padding-left: 20px; line-height: 1.7;\">\n        <li>Execution of pressure proof tests (Hydrostatic at 1.3x to 1.5x MAWP or Pneumatic test) with dual calibrated pressure gauges and temperature recorders.<\/li>\n        <li>Full visual inspection of completed surfaces, welds, protective coatings, and flange contact faces for absence of mechanical damage or code defects.<\/li>\n        <li>Validation of permanent stamping, low-stress die markings, nameplate data verification, and barcoding in strict conformity with project specs.<\/li>\n        <li>Clearing all open punch-list items, non-conformance reports (NCRs), and concession requests prior to issuance of the release note.<\/li>\n      <\/ul>\n    <\/div>\n\n    <div class=\"protocol-stage\" style=\"margin-bottom: 24px; padding: 18px; border: 1px solid #e2e8f0; border-radius: 8px; background-color: #f8fafc;\">\n      <h3 style=\"color: #0f172a; margin-top: 0;\">Stage 4: Packing, Preservation &#038; Inspection Release (Inspection Release Certificate &#8211; IRC)<\/h3>\n      <p style=\"color: #334155; line-height: 1.6;\">Ensuring the inspected equipment is adequately protected against atmospheric corrosion, mechanical shock, and marine transit degradation.<\/p>\n      <ul style=\"color: #1e293b; padding-left: 20px; line-height: 1.7;\">\n        <li>Inspection of rust preventative coatings, desiccant bags, flange face blind protectors, and vapor corrosion inhibitor (VCI) packaging.<\/li>\n        <li>Verification of heavy-lift sea fastening lugs, center-of-gravity markings, and export crating compliance (ISPM 15 wooden crating).<\/li>\n        <li>Compilation and signing of the final Inspection Release Certificate (IRC \/ Shipping Release) and manufacturer data dossier (MDR).<\/li>\n      <\/ul>\n    <\/div>\n  <\/section>\n\n  <!-- Technical Acceptance Criteria Table -->\n  <section class=\"acceptance-criteria-table\" style=\"margin-top: 32px; margin-bottom: 32px;\">\n    <h2>Technical Acceptance Criteria &#038; Tolerances Matrix<\/h2>\n    <p>All measurements and physical characteristics must comply with the engineering tolerances and acceptance thresholds tabulated below:<\/p>\n    <div style=\"overflow-x: auto;\">\n      <table style=\"width: 100%; border-collapse: collapse; text-align: left; font-size: 14px; margin-top: 12px; border: 1px solid #cbd5e1;\">\n        <thead>\n          <tr style=\"background-color: #0f172a; color: #ffffff;\">\n            <th style=\"padding: 12px 14px; border: 1px solid #334155;\">Inspection Parameter \/ Test Item<\/th>\n            <th style=\"padding: 12px 14px; border: 1px solid #334155;\">Applicable Standard &#038; Clause<\/th>\n            <th style=\"padding: 12px 14px; border: 1px solid #334155;\">Permissible Tolerance \/ Acceptance Limit<\/th>\n            <th style=\"padding: 12px 14px; border: 1px solid #334155;\">Verification Method<\/th>\n            <th style=\"padding: 12px 14px; border: 1px solid #334155;\">Intervention Type<\/th>\n          <\/tr>\n        <\/thead>\n        <tbody>\n          \n          <tr style=\"background-color: #ffffff; color: #0f172a;\">\n            <td style=\"padding: 10px 14px; border: 1px solid #cbd5e1; font-weight: 600;\">Material Chemical &#038; Mechanical Verification<\/td>\n            <td style=\"padding: 10px 14px; border: 1px solid #cbd5e1; font-weight: normal;\">ISO 9001 \/ ASME \/ API \/ EN 10204 3.1<\/td>\n            <td style=\"padding: 10px 14px; border: 1px solid #cbd5e1; font-weight: normal;\">100% compliance with minimum tensile, yield, elongation, and impact values (Charpy V-Notch at design temp)<\/td>\n            <td style=\"padding: 10px 14px; border: 1px solid #cbd5e1; font-weight: normal;\">Optical Emission Spectrometry (OES) \/ MTR Verification<\/td>\n            <td style=\"padding: 10px 14px; border: 1px solid #cbd5e1; font-weight: normal;\">Review (R)<\/td>\n          <\/tr>\n\n          <tr style=\"background-color: #f1f5f9; color: #0f172a;\">\n            <td style=\"padding: 10px 14px; border: 1px solid #cbd5e1; font-weight: 600;\">Visual &#038; Dimensional Tolerances<\/td>\n            <td style=\"padding: 10px 14px; border: 1px solid #cbd5e1; font-weight: normal;\">ISO 9001 \/ ASME \/ API \/ Project Specs<\/td>\n            <td style=\"padding: 10px 14px; border: 1px solid #cbd5e1; font-weight: normal;\">Zero cracks, lack of fusion, severe pitting; dimensional tolerances within \u00b11.0mm to \u00b13.0mm per code drawings<\/td>\n            <td style=\"padding: 10px 14px; border: 1px solid #cbd5e1; font-weight: normal;\">Calibrated Vernier, Bridge Cam, Depth Micrometer<\/td>\n            <td style=\"padding: 10px 14px; border: 1px solid #cbd5e1; font-weight: normal;\">Witness (W)<\/td>\n          <\/tr>\n\n          <tr style=\"background-color: #ffffff; color: #0f172a;\">\n            <td style=\"padding: 10px 14px; border: 1px solid #cbd5e1; font-weight: 600;\">Non-Destructive Examination (NDT)<\/td>\n            <td style=\"padding: 10px 14px; border: 1px solid #cbd5e1; font-weight: normal;\">ASME Sec V \/ ASNT SNT-TC-1A<\/td>\n            <td style=\"padding: 10px 14px; border: 1px solid #cbd5e1; font-weight: normal;\">100% compliant with code acceptance criteria; zero planar defects or unpermitted volumetric indications<\/td>\n            <td style=\"padding: 10px 14px; border: 1px solid #cbd5e1; font-weight: normal;\">Radiographic (RT) \/ Ultrasonic (UT) \/ Magnetic Particle (MT)<\/td>\n            <td style=\"padding: 10px 14px; border: 1px solid #cbd5e1; font-weight: normal;\">Hold (H)<\/td>\n          <\/tr>\n\n          <tr style=\"background-color: #f1f5f9; color: #0f172a;\">\n            <td style=\"padding: 10px 14px; border: 1px solid #cbd5e1; font-weight: 600;\">Pressure \/ Proof Testing (Hydrostatic)<\/td>\n            <td style=\"padding: 10px 14px; border: 1px solid #cbd5e1; font-weight: normal;\">ISO 9001 \/ ASME \/ API \/ ASME Sec VIII<\/td>\n            <td style=\"padding: 10px 14px; border: 1px solid #cbd5e1; font-weight: normal;\">Test pressure maintained for minimum 30 to 60 mins; zero pressure drop, zero leakage or visible sweating<\/td>\n            <td style=\"padding: 10px 14px; border: 1px solid #cbd5e1; font-weight: normal;\">Dual calibrated Bourdon pressure gauges + Chart Recorder<\/td>\n            <td style=\"padding: 10px 14px; border: 1px solid #cbd5e1; font-weight: normal;\">Hold (H)<\/td>\n          <\/tr>\n\n          <tr style=\"background-color: #ffffff; color: #0f172a;\">\n            <td style=\"padding: 10px 14px; border: 1px solid #cbd5e1; font-weight: 600;\">Surface Prep &#038; Protective Coating Quality<\/td>\n            <td style=\"padding: 10px 14px; border: 1px solid #cbd5e1; font-weight: normal;\">SSPC-SP \/ NACE \/ ISO 8501<\/td>\n            <td style=\"padding: 10px 14px; border: 1px solid #cbd5e1; font-weight: normal;\">Surface profile 50 &#8211; 75 \u00b5m; Dry Film Thickness (DFT) within 80\/20 rule of specified nominal thickness<\/td>\n            <td style=\"padding: 10px 14px; border: 1px solid #cbd5e1; font-weight: normal;\">Replica Tape (ASTM D4417) &#038; Magnetic Gauge (SSPC-PA 2)<\/td>\n            <td style=\"padding: 10px 14px; border: 1px solid #cbd5e1; font-weight: normal;\">Witness (W)<\/td>\n          <\/tr>\n\n          <tr style=\"background-color: #f1f5f9; color: #0f172a;\">\n            <td style=\"padding: 10px 14px; border: 1px solid #cbd5e1; font-weight: 600;\">Nameplate &#038; Final Preservation Verification<\/td>\n            <td style=\"padding: 10px 14px; border: 1px solid #cbd5e1; font-weight: normal;\">API \/ ASME \/ Client Specs<\/td>\n            <td style=\"padding: 10px 14px; border: 1px solid #cbd5e1; font-weight: normal;\">316L SS nameplate securely affixed with correct design code, MAWP, design temp, and national board stamping<\/td>\n            <td style=\"padding: 10px 14px; border: 1px solid #cbd5e1; font-weight: normal;\">Physical visual check &#038; VCI preservation verification<\/td>\n            <td style=\"padding: 10px 14px; border: 1px solid #cbd5e1; font-weight: normal;\">Hold (H)<\/td>\n          <\/tr>\n        <\/tbody>\n      <\/table>\n    <\/div>\n  <\/section>\n\n  <!-- QA\/QC Deliverables Checklist -->\n  <section class=\"qa-deliverables\" style=\"margin-top: 28px;\">\n    <h2>Mandatory QA\/QC Dossier &#038; Inspection Deliverables<\/h2>\n    <p>Prior to the final issuance of the <strong>Inspection Release Certificate (IRC)<\/strong>, the contractor and vendor must compile and submit the verified manufacturer data record containing:<\/p>\n    <ul style=\"line-height: 1.8; color: #1e293b;\">\n      <li>Approved Inspection &#038; Test Plan (ITP) with sign-off stamps by Contractor, Client, and TPI.<\/li>\n      <li>Material Test Reports (MTR \/ Mill Test Certificates EN 10204 Type 3.1 or 3.2).<\/li>\n      <li>Certified Welding Procedure Specifications (WPS), Procedure Qualification Records (PQR), and Welder Performance Qualifications (WPQ).<\/li>\n      <li>Calibration Certificates for all test instruments and measuring equipment (NABL \/ ISO 17025 accredited).<\/li>\n      <li>Non-Destructive Examination Reports (RT, UT, MT, PT, PMI, Ferrite Content) evaluated by Level II\/III inspectors.<\/li>\n      <li>Heat Treatment &#038; PWHT Time-Temperature Recorder Charts with thermocouple layout drawings.<\/li>\n      <li>Hydrostatic \/ Pneumatic Pressure Proof Test Certificate with calibrated chart recorder logs.<\/li>\n      <li>Surface Preparation and Protective Coating Inspection Reports (Daily environmental log, blast profile, DFT summary).<\/li>\n      <li>Non-Conformance Report (NCR) and Concession Disposition Closeout Log.<\/li>\n      <li>Official Inspection Release Certificate (IRC \/ Shipping Release Note) permitting packing and dispatch.<\/li>\n    <\/ul>\n  <\/section>\n\n  <!-- Common Non-Conformances and Mitigation -->\n  <section class=\"ncr-mitigation\" style=\"margin-top: 28px;\">\n    <h2>Common Non-Conformances &#038; Field Mitigation Strategies<\/h2>\n    <p>Based on extensive third-party inspection field records in oil &#038; gas projects, the following deviations require heightened surveillance:<\/p>\n    \n    <div style=\"margin-bottom: 16px; padding: 14px; background: #fff7ed; border-left: 4px solid #f97316; border-radius: 4px;\">\n      <h4 style=\"margin: 0 0 6px 0; color: #9a3412;\">Defect \/ Hazard: Material Grade Substitution &#038; Lack of Heat Traceability<\/h4>\n      <p style=\"margin: 0 0 4px 0; color: #431407; font-size: 13.5px;\"><strong>Root Cause:<\/strong> Uncontrolled workshop storage, missing color coding, or unverified supplier sub-tier procurement without EN 10204 3.1 documentation.<\/p>\n      <p style=\"margin: 0; color: #15803d; font-size: 13.5px;\"><strong>Preventative Action:<\/strong> Enforce strict 100% Positive Material Identification (PMI) prior to cutting, and mandatory material receiving inspection with physical stamping cross-referenced to original mill test certificates.<\/p>\n    <\/div>\n\n    <div style=\"margin-bottom: 16px; padding: 14px; background: #fff7ed; border-left: 4px solid #f97316; border-radius: 4px;\">\n      <h4 style=\"margin: 0 0 6px 0; color: #9a3412;\">Defect \/ Hazard: Out-of-Tolerance Fit-Up &#038; Alignment Mismatch<\/h4>\n      <p style=\"margin: 0 0 4px 0; color: #431407; font-size: 13.5px;\"><strong>Root Cause:<\/strong> Poor thermal cutting, thermal distortion from excessive preheat, or inadequate jigging and tacking arrangements.<\/p>\n      <p style=\"margin: 0; color: #15803d; font-size: 13.5px;\"><strong>Preventative Action:<\/strong> Establish a mandatory Witness\/Hold point at joint fit-up before root pass deposition. Use calibrated Hi-Lo gauges to verify bevel angle, root face, and root gap according to the qualified WPS.<\/p>\n    <\/div>\n\n    <div style=\"margin-bottom: 16px; padding: 14px; background: #fff7ed; border-left: 4px solid #f97316; border-radius: 4px;\">\n      <h4 style=\"margin: 0 0 6px 0; color: #9a3412;\">Defect \/ Hazard: Premature Coating Delamination &#038; Blistering Under Film<\/h4>\n      <p style=\"margin: 0 0 4px 0; color: #431407; font-size: 13.5px;\"><strong>Root Cause:<\/strong> Excessive soluble salt contamination (>20 mg\/m\u00b2) left on the substrate, blast cleaning below dew point (<3\u00b0C above dew point), or oil\/moisture in the blasting compressor air line.<\/p>\n      <p style=\"margin: 0; color: #15803d; font-size: 13.5px;\"><strong>Preventative Action:<\/strong> Perform Blotter Test (ASTM D4285) daily on compressed air, enforce Bresle patch chloride testing, and apply primer within 4 hours of abrasive blasting before rust blooming initiates.<\/p>\n    <\/div>\n\n    <div style=\"margin-bottom: 16px; padding: 14px; background: #fff7ed; border-left: 4px solid #f97316; border-radius: 4px;\">\n      <h4 style=\"margin: 0 0 6px 0; color: #9a3412;\">Defect \/ Hazard: Pressure Drop During Final Hydrostatic Proof Testing<\/h4>\n      <p style=\"margin: 0 0 4px 0; color: #431407; font-size: 13.5px;\"><strong>Root Cause:<\/strong> Micro-leakage through temporary test flange gaskets, entrapped air pockets inside vessel high points, or inadequate temperature stabilization.<\/p>\n      <p style=\"margin: 0; color: #15803d; font-size: 13.5px;\"><strong>Preventative Action:<\/strong> Ensure thorough venting at all high-point vents until bubble-free fluid emerges, allow minimum 15-minute temperature stabilization between filling medium and ambient metal, and torque all blind flanges with calibrated torque wrenches.<\/p>\n    <\/div>\n  <\/section>\n\n  <!-- FAQ Section (Schema Ready) -->\n  <section class=\"inspection-faq\" style=\"margin-top: 36px; padding: 24px; background-color: #f8fafc; border: 1px solid #e2e8f0; border-radius: 12px;\">\n    <h2 style=\"color: #0f172a; margin-top: 0;\">Frequently Asked Questions (FAQ)<\/h2>\n    \n    <div style=\"margin-bottom: 20px;\">\n      <h3 style=\"font-size: 16px; color: #1e3a8a; margin-bottom: 6px;\">Q: What are the mandatory qualifications for inspectors verifying Centrifugal Compressor Testing?<\/h3>\n      <p style=\"color: #334155; line-height: 1.6; margin: 0;\"><strong>A:<\/strong> Inspectors must hold recognized international certifications applicable to the discipline. For welding and fabrication: CSWIP 3.1\/3.2, AWS CWI, or API 510\/570 Source Inspector. For NDT: ISO 9712 or ASNT SNT-TC-1A Level II minimum. For coatings: NACE \/ AMPP Level 2 or FROSIO Level III. Additionally, the inspection agency must operate under an ISO\/IEC 17020 accredited quality management system.<\/p>\n    <\/div>\n\n    <div style=\"margin-bottom: 20px;\">\n      <h3 style=\"font-size: 16px; color: #1e3a8a; margin-bottom: 6px;\">Q: How does PtroTek resolve non-conformances (NCRs) encountered during vendor surveillance?<\/h3>\n      <p style=\"color: #334155; line-height: 1.6; margin: 0;\"><strong>A:<\/strong> When a deviation from certified drawings or ISO 9001 \/ ASME \/ API is detected, the inspector issues a formal Non-Conformance Report (NCR) within 24 hours. The vendor must submit a Root Cause Analysis (RCA) and proposed disposition (Rework, Repair, or Concession). Work on the affected component is halted (Hold Point) until the Owner&#8217;s engineering authority approves the disposition and a re-inspection confirms full compliance.<\/p>\n    <\/div>\n\n    <div style=\"margin-bottom: 20px;\">\n      <h3 style=\"font-size: 16px; color: #1e3a8a; margin-bottom: 6px;\">Q: What is the difference between Witness (W) and Hold (H) points in an Inspection &#038; Test Plan (ITP)?<\/h3>\n      <p style=\"color: #334155; line-height: 1.6; margin: 0;\"><strong>A:<\/strong> A Hold Point (H) is a mandatory milestone where fabrication or testing CANNOT proceed without the physical presence of the designated client or third-party inspector. Written clearance or stamping is strictly required. A Witness Point (W) requires prior notification (typically 24 to 48 hours) to the inspector; however, if the inspector fails to attend at the scheduled time, fabrication or testing may proceed with subsequent review of the test records.<\/p>\n    <\/div>\n\n    <div style=\"margin-bottom: 20px;\">\n      <h3 style=\"font-size: 16px; color: #1e3a8a; margin-bottom: 6px;\">Q: Can international clients review inspection reports and photos in real time?<\/h3>\n      <p style=\"color: #334155; line-height: 1.6; margin: 0;\"><strong>A:<\/strong> Yes. PtroTek provides comprehensive Flash Reports issued within 24 hours of inspection completion, followed by detailed formal inspection reports accompanied by high-resolution calibrated photographic evidence, dimension logs, and signed vendor test records for complete global transparency.<\/p>\n    <\/div>\n  <\/section>\n\n  <!-- Authoritative Call to Action & Internal Links -->\n  <section class=\"cta-section\" style=\"margin-top: 36px; padding: 24px; background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%); color: #ffffff; border-radius: 12px; text-align: center;\">\n    <h2 style=\"color: #f8fafc; margin-top: 0;\">Need Certified Third-Party Inspection (TPI) Support?<\/h2>\n    <p style=\"color: #cbd5e1; max-width: 700px; margin: 0 auto 18px auto; line-height: 1.6;\">\n      PtroTek provides international vendor surveillance, ASME code vessel inspection, welding QA\/QC, and protective coating verification across Southeast Asia, the Middle East, and global fabrication hubs.\n    <\/p>\n    <p style=\"margin: 0;\">\n      <a href=\"https:\/\/ptrotek.com\/index.php\/contact\/\" style=\"display: inline-block; background-color: #f59e0b; color: #0f172a; font-weight: bold; padding: 12px 28px; border-radius: 6px; text-decoration: none;\">\n        Request a Technical Inspection Quote\n      <\/a>\n    <\/p>\n  <\/section>\n\n<\/article>\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>The centrifugal compressor testing article provides information about the centrifugal compressor aerodynamic testing, mechanical running test, impeller overspeed test, casing inspection and casing hydrostatic testing, impeller and rotor dynamic balancing, vibration testing and analysis and gas leakage test. You may want to review the&nbsp;centrifugal compressor inspection procedure&nbsp;and corresponding&nbsp;inspection and test plan. &nbsp; Centrifugal Compressor Aerodynamic [&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":"set","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-627","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/ptrotek.com\/index.php\/wp-json\/wp\/v2\/pages\/627","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=627"}],"version-history":[{"count":6,"href":"https:\/\/ptrotek.com\/index.php\/wp-json\/wp\/v2\/pages\/627\/revisions"}],"predecessor-version":[{"id":2751,"href":"https:\/\/ptrotek.com\/index.php\/wp-json\/wp\/v2\/pages\/627\/revisions\/2751"}],"wp:attachment":[{"href":"https:\/\/ptrotek.com\/index.php\/wp-json\/wp\/v2\/media?parent=627"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}