QUALITY ASSURANCE PLAN FOR NON RETURN VALVE

SIDESCRIPTION CHARACTERISTIC TYPE OF CHECK QUANTUM OF CHECKREFERENCE DOCUMENTS ACCEPTANCE CRITERIAMANU BDDE CLIENT
1INCOMING MATERIAL CONTROL  Surface finishing, marking (size, Heat no.)Random sampling Approved Technical Catalogue /Approved Order Specification & DrawingPR 
1.1BodyVisual Random sampling PR 
Chemical Composition Chemical Analysis by XRFRandom sampling PR 
1.2DiscVisual Random sampling Approved Technical Catalogue /Approved Order Specification & DrawingPR 
Chemical Composition Chemical Analysis by XRFRandom sampling PR 
1.3 SeatVisual SizeSurface finishing Dimensional check upRandom sampling Approved Technical Catalogue /Approved Order Specification & DrawingPR 
1.4Seals (Bushes,  ‘O’ ringVisual Fitness Surface finishing and damage, dimensional check upRandom sampling Approved Technical Catalogue /Approved Order Specification & DrawingPR 
2IN-PROCESS INSPECTION Machining dimensions
Measurement by Vernier Caliper after machiningRandom sampling Approved Technical Catalogue /Approved Order Specification & DrawingPR 
2.1All machined partsRandom sampling PW 
3INSPECTION & TESTING     API598 PW 
3.1Pressure testShell test, disc strength, seatPressure test by Hydrostatic test pump Random 10%    
3.2Leakage TestSeat LeakagePneumatic test by compressed airCustomer’s requirement API598    PW 
3.3Operation Actuationopening and closing of valve100% physical ResultPW 
3.4Surface finishing Painting finishing Visual100% physical ResultPW