Christopher Cobain - The WeldNet - CV 2015 Rev 0

The WeldNet
CONSULTANT ENGINEERS - METALLURGY AND WELDING
THE WELDNET PTY LTD - ABN 74 009 408 226
UNIT 3/52 WELD STREET, NEDLANDS, WESTERN AUSTRALIA, 6009.
Website: www.weldnet.com.au Email: info@weldnet.com.au
Curriculum Vitae
NAME Christopher Paul Cobain
DATE OF BIRTH 1966
NATIONALITY Australian Citizen
QUALIFICATIONS
Masters Degree in Welding Engineering (University of Wollongong - UOW)
Post Graduate Diploma Materials Welding and Joining (UOW)
Advanced Diploma of Engineering Metallurgy (AMTC)
IMEA: Certified Materials Professional (CMatP)
WTIA: Certified Comprehensive Welding Inspector (CCWI)
WTIA: Welding Supervisor (AS 1796)
TWI: Senior Welding Inspector Level 3 (CSWIP)
TWI: Radiograph Interpreter Level 2 (CSWIP)
IIW: International Welding Inspector – Comprehensive
IIW: International Welding Specialist
DOL: Boilermaker / Welder 1st
Class
AFFILIATIONS / MEMBERSHIPS
Member Welding Technology Institute Australia
Member Institute of Materials Engineering Australia
Member of the Australian Welding Institute
POSITION
Senior Welding & Materials Engineer (2005 to Present). Providing materials, welding, project
engineering consulting services to the petrochemical, mining, construction and fabrication industry.
COMPETENCIES
Standards and Specifications
Project Documentation Development
Construction Management and Planning
All Fabrication, Welding and NDE Methods
QA / QC Procedure Review / Approval
Material Properties and Metallurgy
Third Party Verification
Client Representative
Safe Work Practice
Failure Analysis
Computer Skills
Leadership

The WeldNet
THE WELDNET PTY LTD - ABN 74 009 408 226
UNIT 3/52 WELD STREET, NEDLANDS, WESTERN AUSTRALIA, 6009.
Web: www.weldnet.com
MAJOR CLIENT LIST AND DETAILS OF EXPERIENCE FOR CHRISTOPHER COBAIN
WOODSIDE ENERGY LIMITED
1. North Rankin A Jacket Life Extension - 2010
 Advise on jacket node weld blending to increase fatigue life.
 Advise on pre / post weld NDE and crack rectification methods.
 Review / approve WPS/PQR packages and NDE reports.
 Materials: Heavy wall C-Mn steel structural tubing
 Standards: AWS D1.1 / API RP documents / ECA assessment reports
2. North Rankin 2 Jacket Construction – 2010 / 2011
 Review / approve fabrication and QC procedures.
 Review / approve WPS/PQR packages.
 Witness welding procedure operations, recording, NDE and mechanical
assessments including CTOD.
 Review AUT procedures / advise on seeded defect weld requirements
 Overseas site surveillance and monitoring during jacket manufacture / welding
 Investigate DSS defect rate and advise / implement improvement program.
 Support client QC management and work front team members
 Materials: Heavy wall C-Mn steel structural tubing and manufactured sections,
Large and small bore C-Mn steel and DSS UNS S31803 piping systems
 Standards: AWS D1.1 / ASME B31.3 / Client specifications
3. Woodside Office Welding Engineer Support – 2010 / 2011 / 2012
 Attend Woodside offices, (ad hoc basis), and issue approved WPS packages
for offshore brownfield equipment and gas plant maintenance programs.
 Assist Woodside QA / QC group on materials, welding and NDE.
 Standards: AWS D1.1 / ASME B31.3 / Client specifications

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BHP BILLITON
1. Macedon Project - 2010
 Specification development for welding, NDE to subsea structures and pipe
spools
 Review / approval of welding procedures.
 Materials: Structural Steel, C-Mn / SDSS UNS S32750 Linepipe and fittings
 Standards: AWS D1.1, DNV OS F101
2. Worsley Alumina in service welding / Calciner expansion – 2011 / 2013
 Thermal analysis modelling and WPS proposal development.
 Witness simulation weld qualification.
 Compilation of in service welding package
 Site surveillance and monitoring welds / NDE
 Site report and acceptance
 Materials: API 5L X52 linepipe and Split Tee
 Standards: AS 2885-2
TECHNIP OCEANIA
1. Vincent Stage 2 / Enfield Subsea Rigid Spools - 2010
 Specification and QC / ITP document development for welding, NDE, coating,
pressure testing of subsea pipe spools
 Preparation of WPS proposals
 Witness WPS and welder qualification
 WPS/PQR/WPQ document compilation
 Surveillance and inspection – welds / NDE / dimensions
 Review / approval release certification / MDR data
 Materials: DSS UNS S31803 Linepipe and fittings
 Standards: DNV OS F101 and client specifications
2. Wheatstone Upstream- 2010
 Review / approval WPS/PQR/WPQ documents
 Materials: DSS UNS S31803 / C-Mn steel Linepipe and fittings
 Standards: ASME B31.3 / DNV OS F101 and client specifications

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3. Vincent Stage 3 Subsea Rigid Spools - 2011
 Specification and QC / ITP document development for welding, NDE, coating,
pressure testing of subsea pipe spools
 Witness WPS and welder qualification / mechanical testing
 WPS/PQR/WPQ document compilation / approval
4. Vincent Stage 3B Subsea Rigid Spools – 2011 / 2012
 Stock material survey and report
 Witness WPS and welder qualification / mechanical testing
5. Fletcher Funicane Project – 2012
 Advise on NDE methods and application
 Materials: ASTM A694 F65 forgings – Bend Restrictor
 Standards: AWS D1.1 and client specifications
6. Macedon Gas Plant Project – 2012 / 2013
 Witness welder qualifications / training / sign off
 Guidance on pipe spool angular misalignment issues
 Guidance on CVN requirement for base materials
 Radiograph review
 Offshore hook up activity, audit, inspection items report
 Site inspection, surveillance and monitoring
 Materials: C-Mn steel / DSS pipe and fittings
 Standards: DNV OS-F101, ASME B31.3 and client specifications

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7. Gorgon Upstream – 2013
 Specification review
 NDE procedure review
 Review / approval of WPS/PQR/WPQ documentation
 Site production weld surveillance and inspection
 Materials: Large bore C-Mn steel linepipe and fittings
 Standards: ASME B31.3, AS 4041 and client specifications
8. Wheatstone Subsea Structure Fabrication – 2013 / 2014
 Contractor QC procedures development
 Material certification review and approval
 Review / approve WPS/PQR/WPQ documentation
 Review NDE procedures / scope of work
 Overseas site monitoring and recording of WPS/PQR/WPQ
 Overseas site production weld surveillance and inspection
 Materials: C-Mn structural steel
9. Wheatstone Subsea Post Metrology Spool Fabrication – 2014 / 2015
 Development of welding processes and automation
 Supervise trial welding program
 Site monitoring and recording of WPS/PQR/WPQ
 Advise CTOD scope of work / Witness mechanical testing
 Review / approve WPS/PQR/WPQ documentation
 Materials: Large bore C-Mn steel Clad UNS N06625 linepipe and fittings

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EPIC ENERGY / ORIGIN ENERGY / OSD PIPELINES
1. All - Onshore gas transmission pipelines – 2010 / 2011
 Review / approval of WPS proposals
 WPS/PQR/WPQ document review and approval
 Surveillance and inspection – welds / NDE
 Materials: C-Mn steel Linepipe / fittings API 5L F-X65 / F-X70
 Standards: AS 2885-2 and client specifications
APACHE ENERGY / SUBSEA 7 / PTTEP
1. All - Offshore gas transmission trunklines – 2010 / 2011 / 2012
 Barge lay vessel surveillance and inspection – welds / NDE
 Materials: C-Mn steel Linepipe API 5L X65 / X70 / DNV 450
 Standards: AS 2885-4 / DNV OS-F101and client specifications
2. PTTEP – West Atlas Wreck Salvage - Removal / Montara Well head Platform
reinstatement – 2010 / 2011 / 2102
 Heat damaged material assessments and conduct replicas
 Compile report for base material condition.
 Advise on material damage and suitability for salvage equipment placement
 Advise import / export riser / jacket cut lines for platform removal.
 Review / approve Montara platform WPS/PQR packages
 Review of MDR documentation package / sign off
 Materials: C-Mn steel / Low alloy steels / DSS linepipe and structural steel
 Standards: AWS D1.1 / ASME B31.3 / DNV OS-F101 and client specifications

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3. PTTEP – BHP Macedon Subsea Pipeline - 2011
 MDR Review / Approval
 Feedback to Lloyds / DNV review comments / close outs.
 Provide report to close out Lloyds / DNV queries
 Materials: C-Mn steel linepipe DNV 450
 Standards: DNV OS-F101 and client specifications
4. Apache Energy – Devil Creek HDD Pipeline - 2011
 Material substitutions and material suitability
 Materials: C-Mn steel linepipe and fittings API 5L X65 / ASTM A694 F65
 Standards: AS 2885-2 / DNV OS-F101 and client specifications
5. Apache Energy – Julimar / Balnaves project - 2012
 Materials: C-Mn, Austenitic steels. Vessels and pipe spools
 Standards: ASME IX, ASME B31.3 and client specifications
6. Apache Energy – Varanus island In service weld - 2012
 Materials: API 5L X65 linepipe and Split Tee.
7. Apache Energy – Ningaloo Vision FPSO Upgrade - 2013
 Keppel Shipyard WPS/PQR/WPQ document review and approval
 Review / approve QC procedures
 Materials: C-Mn, Austenitic steels. Vessels and pipe spools
 Standards: GL, ASME IX, ASME B31.3 and client specifications

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VERVE ENERGY
1. HP Rotor Turbine Shaft Refurbishment - 2010
 Development and qualification of re-build WPS / PQR
 Development of PWHT procedure
 Surveillance and inspection – welds / NDE
 Materials: AISI 4330 forged turbine shaft
 Standards: Client specifications
SKM RIO TINTO
1. Port Hedland / Cape Lambert Port Facility – 2010 / 2011 / 2012 / 2013
 Review / Approval of WPS / PQR / WPQ documentation
 Advise on material substitutions (Chinese / Thai steels)
 Review of site reports for portable hardness testing
 Advise NDE methods / Review NDE procedures
 Materials: C-Mn / Low alloy structural steels and forgings
 Standards: AS/NZS:1554 Series and client specifications
2. Port Hedland / Cape Lambert Port B In service welds – 2012
MAERSK FPSO
1. Nguima-Yin FPSO turbine Fuel Lines - 2011
 Review radiographs – Advise rectification and repair
 Offshore site surveillance and inspection welds / NDE
 Sign off / approve turbine fuel line system
 Materials: UNS S31803 DSS Linepipe and fittings
 Standards: ASME B31.3 and client specifications

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ICON ENGINEERING
1. Offshore lifting Equipment / Heave Compensator – 2011 / 2012
 Site surveillance and inspection welds / NDE
 Sign off / approve equipment
 Materials: AISI 4130 / 4140 / Low Alloy Steels
 Standards: ASME B31.3 / AWS D1.1 and client specifications
JOHN HOLLAND
1. IMPEX LNG Storage Tanks - 2011
 Provide report for construction / weldability of LNG tanks
 Materials: ASTM A553 Type 1 9% nickel
 Standards: API 620 and client specifications
P & A WELDING
1. In service welding onshore gas transmission pipeline - 2011
2. Relocation onshore gas transmission pipeline - 2013
 Develop and qualify onshore girth seam WPS/PQR/WPQ
 Compilation of girth seam welding package

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NACAP PIPELINES
AUSCLAD GROUP
1. Karara Iron Ore Processing Plant – 2011 / 2012
 Site inspector correspondences
 Materials: C-Mn / Low alloy structural steels and piping
 Standards: AS/NZS:1554 Series, ASME B31.3 and client specifications
2. Apache In service welding onshore gas transmission pipeline – 2012
3. Gorgon Subsea Post Metrology Spool Fabrication – 2012 / 2013
 Supervise trial welding program
 Develop WPS proposals
 Advise CTOD scope of work

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 Compilation of WPS/PQR/WPQ documentation
 Training / mentoring Contractor QC team
 Materials: Large bore C-Mn steel Clad UNS N06625 linepipe and fittings
GORGON UPSTREAM JOINT VENTURE
1. Oil & Gas Processing Plant - 2011
 Review radiography and report
 Materials: C-Mn piping and fittings ASTM A333 / ASTM A350
CLOUGH
1. Flange failure Investigation - 2012
 Remove samples and expedite metallurgical assessment
 Review NDE operations
 Compile report and issue
 Materials: ASTM A350
FUGRO TSM
1. Greater Western Flank Project – 2012 / 2013
 Contractor QC procedure review / approval
 Materials: Heavy wall UNS S31803 linepipe and fittings
 Standards: DNV OS-F101 and client specifications

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KT PIPELINES
APA PIPELINES
1. In service welding onshore gas transmission pipeline South Hedland - 2013
2. In service welding onshore gas transmission pipeline Boodarie - 2014
3. In service welding onshore gas transmission pipeline Murrin - 2015

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CHEVRON
1. Heat Exchanger fabrication rework - 2014
 Radiograph review
 Compile rectification report and QC procedures
 Overseas site monitoring and recording of WPS/PQR/WPQ
 Site surveillance and monitoring fabrication, welds / NDE
 Materials: 90/10 and 70/30 Copper Nickel
 Standards: ASME B31.3
NEPTUNE
1. Wandoo A Platform Conductor repair - 2014
 Compile rectification report and QC procedures
 Materials: C-Mn steel structural sections
MONODELPHOUS
1. Ichthys shore crossing gas transmission trunklines – 2014
 Materials: C-Mn steel Linepipe DNV 450
 Standards: AS 2885-4 / DNV OS-F101and client specifications
REGAL ENGINEERING
1. Offshore tension / spreader beam manufacture and re-certification – 2014 / 2015
 PWHT procedure development and approval
 Compile Re-certification scope of work
 Site surveillance, monitoring and inspection
 Materials: Low alloy steel and forgings
 Standards: AWS D1.1, DNV OS C401 and client specifications

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CIVMEC
1. Buckle Trigger – 2014
 Contractor QC procedure development
 Materials: C-Mn structural sections
 Standards: AWS D1.1 client specifications
2. Prelude Modules Quote Assistance – 2014
 Welding and NDE statement
 Materials: Structural: C-Mn steel
 Materials: Piping C-Mn clad UNS N06625 linepipe and fittings
 Standards: AWS D1.1, ASME B31.8 and client specifications
BAE
1. ANZAC Frigate mast replacement – 2014
 WPS/PQR data base rationalisation
 Materials: C-Mn structural sections, C-Mn bonded Aluminium, Aluminium
 Standards: Germanischer Lloyds and client specifications

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FMC TECHNOLOGIES
1. XENA subsea manifolds – 2014 / 2015
 Materials: C-Mn structural sections, UNS S31803 linepipe and fittings
 Standards: AWS D1.1, DNV OS-F101, ASME B31.3 and client specifications
DEACON ENGINEERS
1. Neerabup Replacement Digesters – 2014 / 2015
 Contractor QC procedure review approval
 Materials: C-Mn structural sections
 Standards: AS/NZS:1554 series and client specifications
TUTT BRYANT
1. Crane boom repair – 2015
 Review OEM rectification manual
 Compile WPS qualification statement
 Materials: LAS structural sections
 Standards: AS/NZS:1554 series, AWS D1.1 and client specifications

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OTHER AREAS OF INVOLVEMENT
Over the previous 5 years, Chris has provided senior level consultative support within an
engineering and inspection role to several smaller fabricators not covered in the above list
of major clients. Details below however are also pertinent to larger project work scopes.
1. Transportation vessels
 Design improvement with supports to reduce incidence of cracking
2. Mining equipment
 Cost effective refurbishment of crushing, excavation, track pad equipment
3. Pipeline components
 Well head spools, difficult to weld materials, 4140, NACE etc and development
of PWHT procedures for such components.
 Compressor station pipework and equipment, pig launchers pig traps etc.
4. Lifting Equipment
 Involving high yield materials within brittle fracture risk. Welding, NDE, PWHT
5. WeldNet database
 Installation and training of WeldNet, and in house developed WPS/PQR/WPQ
database management system.
6. Welding / NDE Method Statements
 Development of project Welding Method Statements encompassing all welding
and NDE related activities for each project.
7. Portable Hardness testing
 The provision of portable hardness testing expertise on site using ultrasonic and
rebound test equipment.
8. Material Substitutions
 Review of substitution material chemistry, processing and properties for
suitability as substitution materials specified in project documentation.,
9. Troubleshooting / Problem solving
 Site based inspection and rectification of weld cracking problems, difficult to
qualify welding procedures, restricted NDE scenarios, fabrication sequences to
avoid weldability issues.
10. Failure Analysis
 Involvement with NDE failures, establishing spurious indications with
radiography and UT equipment.
 Material failure / brittle fracture and strain age embrittlement issues with high
fibre strain conditions.

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11. Specification development / Rationalisation
 Development of project specifications and recommendations to rationalise /
update specifications.
 Remove undue complexity and focus on simplicity.
12. Inspection and Test Plan development
 Development of ITP’s covering all critical aspects of the project from contract
review to final sign off.
13. Technical Queries / Concession Requests
 Compilation of technical queries and concession requests within client
specifications with focus on cost reduction without compromising project
integrity and serviceability.
14. Code queries
 Correspondences with DNV and other code committees regarding code
interpretations and NDE acceptance criteria / NDE methodologies.
 These correspondences have resulted in significant cost savings in preventing
unnecessary weld cut outs where interpretations have been incorrect by NDE
contractors.
15. QA / QC procedure development and review / approval
 The development of QC procedures encompassing material receival, handling
and inspection, consumable control and storage, weld monitoring and
traceability, NDE methodologies, visual inspections, PWHT.
16. Training / Mentoring
 Supervision of Contractor and Client QC teams, inspectors. Provide career
development options and CPD to inspectors, and QC personnel

Christopher Cobain - The WeldNet - CV 2015 Rev 0

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