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Seal Surface deteriorates Wrong Washer Damaged Washer Washer Hardness Porous Valve Casting

DESIGN/APPLICATION. RAW MATERIAL. TAPPING. ASSEMBLY/TEST. MACHINING. Different Operating Conditions Vibration of Valve Operational Use Higher Operating Pressure Poor Documentation Incompetent Tech/ Engr. Seal Surface deteriorates Wrong Washer Damaged Washer Washer Hardness

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Seal Surface deteriorates Wrong Washer Damaged Washer Washer Hardness Porous Valve Casting

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  1. DESIGN/APPLICATION RAW MATERIAL TAPPING ASSEMBLY/TEST MACHINING Different Operating Conditions Vibration of Valve Operational Use Higher Operating Pressure Poor Documentation Incompetent Tech/Engr Seal Surface deteriorates Wrong Washer Damaged Washer Washer Hardness Porous Valve Casting Seal Distorted Inclusions in Valve Casting Casting too Hard (brittle) Damaged face of valve Parallelism Viscosity Smoothness Squareness Adaptor Smoothness Flatness Damaged face adaptor Equipment Breakdown Adaptor damaged thread Thread Pitch Foreign matter Damaged Thread Thread Length Bottom Viscosity of Fluid Adaptor damaged thread Thread Size Incorrect Set-up Interpretation of extent of Leakage Loss of Torque on Union Loss of Torque Missing Washer Over Torque in assembly Test Rig Setting Fitment damage - test Pressure Test Port Test Devt SOPS The Affinity Headings form the 1st Why which gets forwarded to the Fishbone Diagram

  2. Sealing Washer Valve Body Casting Thread Adaptor Casting Receiving Inspection These Sub-Groups form the 2nd Why which gets forwarded to the Fishbone Diagram

  3. The Contents of these Sub-Groups forms the 3rd Why which gets forwarded to the Fishbone Diagram

  4. 2Root Causes and the Prevention Method for each, forms the 4th Whywhich gets forwarded to the Fishbone Diagram

  5. Detection and Detection Weakness forms the 5th Whywhich gets forwarded to the Fishbone Diagram

  6. All this data gets forwarded to the FMEA

  7. 1st WHY = Function The FUNCTION describes each Process Step in a Process 2nd WHY = Requirements The Process Requirements generally reflect the Operating Conditions that are required for effective Process Control. The Product Requirement generally reflects the Specifications that must be achieved. 3rd WHY = Failure Mode & Failure Effect The Failure Mode is defined as the manner in which the process could potentially fail to meet the Product or Process Requirements. The Failure Effect is defined as the consequences incurred in the event of an actual Failure. 4th Why = Root Cause & Prevention Method 5th WHY= Detection & Detection Weakness A Root Cause can be defined as a Product or Process or Design Weakness that may result in a failure. The Detection Controls are specific actions taken to detect the Failure Mode if it happens.

  8. Watch the FMEA populate instantly

  9. 5 Whys Cause & Effect Working Together as One FMEA

  10. CONTACT DETAILS Tel: 0861 748 1925 Email: info@hoquality.com www.hoquality.com

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