Transcription
PMI - Positive Material Identification1) Introduction2) Scope3) Reference Documents4) Equipment5) Surface Preparation6) Testing Procedure7) Traceability8) Acceptance Criteria9) ReportingAPPENDIX – I (REPORT)1) IntroductionThis procedure is developed to ensure that Positive Material Identification (PMI)requirements of the clients and carried out by SFC Inspection.This procedure specifies the requirement of Quality Assurance for Identification ofmaterials during the manufacturing process. The components to be tested areSFC valve Interlocks.2) ScopeTo carry out Positive Material identification, using X-Ray Fluorescent (XRF)Technology. It is to measure the concentration of elements without causing anydamage to the component being examined.Equipment used for PMI is the Thermo Scientific Niton XL23) Reference DocumentsOperating Manual of Thermo Scientific Niton XL2Analytical Reference Materials International Certified Reference MaterialCertificate of Analysis
4) EquipmentThe equipment used is Thermo Scientific Niton XL2 for verification of elementscomposition in various types of materials. The instrument is a fully portableanalyzer with an integrated PDA (Personal Digital Assistance) computer, withinthe Thermo Scientific Niton XL2 analysis program for display / view spectra andsave data.General Metals Analysis can measure 24 elements between Ti-Bi regardless ofconcentration.Calibrated measurement of customized element rangesSpeed of analysis-Grade ID in 2-5 secondsFull assay in 5 -10 seconds5 Surface PreparationsThe surface shall be free from oil, dirt, paint, scale etc that affects the result.Usually a light grinding or power brush is sufficient in probe seating area if notbare metal.Suitable for all weather conditions: -15 to 50 degrees centigrade.6 Testing ProcedureInstrument CalibrationInstrument should have valid annual calibration certificate. Prior to analysis, theInstrument shall be calibrated to a known standard reference and representativeto the alloy type to be tested and confirmed. The standard reference alloycomposition is provided by the equipment manufacturer.Select the System Check Icon on the Main Menu to perform a system check.Thermo Scientific recommends that a system check is performed once everyworking day, as part of your normal start-up procedure, after allowing a minute orso for the analyzer to warm up.
Instrument OperationTurn “ON” the instrumentSelect Analyze on the Main Menu screenIf a simple yes/no answer is required proceed to initiate testing when Ready toTest appears. If the sample details are required please input them now using theData Entry screen.MeasurementsPlace probe on the material / sample to be tested and press the trigger keepingthe probe on the sample / material during the entire measurement.The measurement on the test / sample will indicate with the time and the elapsedmeasurement time on completion of the analyzing of the test item.The display will indicate the composition on each element in percentage withdeviation and also the common alloy detected, i.e. 316/ 304/ etc. Measurementswill be stored in the Instrument memory. Stored measurement data can beprinted for evaluation and reporting.7 TraceabilitySpot or area tested should be identified and marked by marker or as per clientspecification.8 Acceptance CriteriaThe minimum elements to be tested for each type of alloy shall be as per materialreference specification.S/S Stainless Steel Ni, Cr, Mo, FeThe element shall meet the requirement of applicable material specification todetermine acceptance. If any disposition required, Client’s acceptance deemedto be final approval.
9 ReportingAll tests shall be in the company standard inspection report format. See attachedappendix I.To Include:Equipment make and Serial NumberReading NumberDuration of testAlloy IDSample IDSignatory
Appendix I
PMI - Positive Material Identification 1) Introduction 2) Scope 3) Reference Documents 4) Equipment 5) Surface Preparation 6) Testing Procedure 7) Traceability 8) Acceptance Criteria 9) Reporting APPENDIX – I (REPORT) 1) Introduction This procedure is developed to ensure that Positive Material Identification (PMI) requirements of the clients and carried out by SFC Inspection. This procedure .File Size: 362KBPage Count: 6
