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Jim Merrill, Welding Engineer, Law Crandell

Jim Merrill, Welding Engineer, Law Crandell. SFOBB Steel Fabricators Outreach. STEEL MATERIALS TESTING QC/QA Welding Quality Control Steel Audits Project Specific Discussion. SFOBB Steel Fabricators Outreach. Welding Quality Control Field Vs. Shop Quality Control Manager (QCM)

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Jim Merrill, Welding Engineer, Law Crandell

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  1. Jim Merrill, Welding Engineer, Law Crandell

  2. SFOBB Steel Fabricators Outreach STEEL MATERIALS TESTING QC/QA • Welding Quality Control • Steel Audits • Project Specific Discussion

  3. SFOBB Steel Fabricators Outreach Welding Quality Control • Field Vs. Shop • Quality Control Manager (QCM) • Pre-weld Meeting • Quality Control Plan (QCP)

  4. SFOBB Steel Fabricators Outreach Weld Quality • Shop Vs. Field • Code Quality is the same • Same Allowable Stress • Skill Level of Welders

  5. SFOBB Steel Fabricators Outreach Quality Control Manager (QCM) • Must be a Direct Employee of Prime • Primary Contact for Quality Matters • Review submittals • Represents contractor and subs • Certified Welding Inspector (CWI) • Level II in NDT Methods Utilized

  6. SFOBB Steel Fabricators Outreach Pre-weld Meeting • Discussion of Sec. 8.3 (special provisions) • Certification of personnel • Procedure Qualification • Development of QCP • Required documents • Questions from the Contractor

  7. SFOBB Steel Fabricators Outreach Quality Control Plan • Welding Procedures • WPS, PQR • Ct Witness • Welder Qualifications • Process, 3 year limit • Ct Witness • NDT • Level II, III • Written Practice

  8. SFOBB Steel Fabricators Outreach Steel Audits • Self Audit • All audit items are contract requirements • Ct Audit • Prior to beginning Fabrication • Formal Audit • Purpose to Determine Capability • Re-audit • If required • Max 3 times

  9. SFOBB Steel Fabricators Outreach Project Specific • Ct UT Certification • Deck Mock-up • Distortion Control Plan • QC Presence • Fatigue Details • Fabrication Survey

  10. SFOBB Steel Fabricators Outreach Caltrans UT Certification • Caltrans UT Technician Certification Program • Written Portion (Code Knowledge) • Hands on (code technique acceptance)

  11. SFOBB Steel Fabricators Outreach Deck Mock-up • Fabricator to Provide Deck Mock-up • Demonstrate Fabricators Procedures • Welding Procedures • Distortion Control • Assembly Practice

  12. SFOBB Steel Fabricators Outreach Distortion Control Plan • Orthotropic Deck, Tower • Holding of required dimensional tolerances • Jigs and Fixtures • Prevention of residual stress • Lamellar tearing • Pre and Post weld Heat Treatments

  13. SFOBB Steel Fabricators Outreach QC Presence • QC CWI Presence • When any work is being performed • all shifts • all shops • Before, During and After Welding • 30 minute max duration

  14. SFOBB Steel Fabricators Outreach Fatigue Details • Specific Shape • Weld Profile • Depth of Penetration

  15. SFOBB Steel Fabricators Outreach Fabrication Survey • Must be performed at Fabrication Facility • Deck Sections per Fit-up • Match Field Erection

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