MAHDER BIN HJ. OTHMAN
Welding Inspector
Batu Pahat,Johor
Summary
Welding & Structural Inspector with a long record across onshore and offshore Oil & Gas projects. Verifies welding procedures, WPS/WQT activities, fit-up, and dimensional checks against AWS, ASME, API, and project specifications while closing NCRs and supporting NDT follow-up. Strengthens quality control by coordinating contractors, maintaining traceable inspection records, and enforcing safe hot work execution.
Overview
1
1
Language
5
5
Certifications
21
21
years of professional experience
Work History
Welding & Structural Inspector
GPD/PD&T – PDOFF, PETRONAS Technical Services Sdn Bhd.
04.2020 - 12.2024
- Project Involved: PROVISION OF BARONIA REJUVENATION PROJECT (CP4/ CP5).
- Responsibility:
Coordinated with contractors to minimize work interference during welding, testing, and qualification activities. Monitored welding quality to ensure compliance with AWS D1.1, API 1104, PTS, CSP and project-specific standards. Witnessed WPS and WQT activities, evaluated welding equipment adequacy, and maintained electrode storage. Conducted visual, dimensional, and fit-up inspections, including grinding, back-gouging, and joint preparation. Participated in NDT planning, reviewed test results, and followed up on NCRs and corrective actions. Maintained detailed records for welding procedures, welder qualifications, repairs, and rejections, while enforcing safety compliance during hot work.
QC Coordinator.
Sapura Energy Berhad.
10.2018 - 03.2020
- Client: SARAWAK SHELL BERHAD (SSB).
- Project Involved: PROVISION OF ENGINEERING, PROCUREMENT AND CONSTRUCTION (EpC) FOR SK408 GOREK & F6K-A BROWNFIELD INTEGRATED MODULE ( F6 BIM).
- Responsibility:
Oversaw construction supervision and quality coordination on-site to meet project objectives. Reviewed and implemented contractor’s quality management systems, conducted audits, and developed ITPs and QC procedures. Liaised with EPC contractors, supporting all disciplines in quality monitoring and execution. Documented and maintained the field quality control system, ensuring proper QA/QC activities. Provided technical support to inspectors, resolved cross-disciplinary quality issues, and maintained project documentation.
Welding Inspector (Piping).
Sinopec Engineering Group.
04.2018 - 09.2018
- Client: PRPC REFINERY & CRACKER SDN BHD and PENGERANG PETROCHEMICAL COMPANY SDN BHD
- Project Involved: PENGERANG INTEGRATED COMPLEX (Package 2-CDU, ARDS, HCDU Units).
Welding Inspector.
Petra Resources Sdn Bhd.
01.2017 - 02.2018
- Client: PETRONAS CARIGALI SDN BHD (PCSB).
- Project Involved: PREVISION FOR HOOK-UP AND COMMISSIONING OF SAMARANG EOR PROJECT.
Welding Inspector.
Petra Resources Sdn Bhd.
06.2016 - 12.2016
- Client: PETRONAS CARIGALI SDN BHD (PCSB).
- Project Involved: PREVISION FOR HOOK-UP AND COMMISSIONING OF TEMANA REVISIT UPGRADE PROJECT (TRUP).
Welding Inspector.
Petra Resources Sdn Bhd.
05.2014 - 04.2016
- Client: PETRONAS CARIGALI SDN BHD (PCSB)
- Project Involved: PREVISION FOR HOOK-UP AND COMMISSIONING OF CLUSTER 5 (Phase 2) TEMANA FIELD PIPELINE REJUVENATION SKO PROJECT.
Welding Inspector.
Petra Resources Sdn Bhd.
01.2014 - 05.2014
- Client: PETRONAS CARIGALI SDN BHD (PCSB)
- Project Involved: PREVISION FOR HOOK-UP AND COMMISSIONING AND TOPSIDE MAINTENANCE SERVICES FOR YEAR 2013-2018 (SBO TEMBUNGO-A & TEMBUNG-B EARLY MONETIZATION PROJECT) SIPROD & RIG-UP WORK SCOPE.
Welding Inspector.
Petra Resources Sdn Bhd.
08.2013 - 12.2013
- Client: PETRONAS CARIGALI SDN BHD (PSCB).
- Project Involved: PREVISION OF HOOK-UP AND COMMISSIONING OF PETRONAS CARIGALI FOR YEAR 2012-2017. (SKO PIPELINE PL215 TKP-A & TKP-B)
Welding Inspector.
Petra Resources Sdn Bhd.
02.2013 - 09.2013
- Client: SABAH SHELL PETROLEUM COMPANY LTD (SSPC).
- Project Involved: PREVISION OF OFFSHORE SERVICES CONTRACT (OSC) FOR GUMUSUT-KAKAP DEVELOPMENT.
Welding Inspector.
Petra Resources Sdn Bhd.
09.2012 - 01.2013
- Client: PETRONAS CARIGALI SDN BHD (PCSB).
- Project Involved: PREVISION FOR HOOK-UP AND COMMISSIONING OF SKO PIPELINE PL-366 & PL-364 REJUVENATION PROJECT (BYP-A, TEP-B, BCOT Shore Approach).
Welding Inspector.
Petra Resources Sdn Bhd.
08.2011 - 09.2012
- Client: PETRONAS CARIGALI SDN BHD (PCSB).
- Project Involved: BOKOR POWER GENERATION UPGRADE (BOK-A)
- BARAM ( BAJT-H Well Tie-In)
- TUKAU (TKDP-A Well Tie-IN, TKP-B & TKIT-C Pipeline Rejuvenation)
- KANOWIT (KAK-G) Subsea.
QC Inspector (Structural).
Power Goldentech Sdn Bhd.
04.2011 - 07.2011
- Main Contractor: Kencana Torso Sdn Bhd.
- Client: PETRONAS CARIGALI SDN BHD (PCSB).
- Project Involved: SEPAT EARLY PRODUCTION SYSTEM (SEPS)
Welding & Structural Inspector.
GPD/PD&T – PDOFF, PETRONAS Technical Services Sdn Bhd.
01.2009 - 03.2010
- Project Involved: DULANG COMPRESSED GAS CAPACITY ENHANCEMENT PROJECT (DL-B CGCE M8) & KINABALU NON ASSOCIATED GAS DEVELOPMENT PROJECT (KNJT-C Jacket)
QA/QC Coordinator.
Global Fab. Sdn Bhd.
10.2008 - 12.2008
- Main Contractor: Ramunia Fabricator Sdn Bhd.
- Client: PETRONAS CARIGALI SDN BHD (PCSB).
- Project Involved: KUMANG CLUSTER (KJUT) & TANGGA BARAT CLUSTER DEVELOPMENT PROJECT (Jacket).
QA/QC Coordinator.
Global Fab. Sdn Bhd.
01.2008 - 10.2008
- Main Contractor: Ramunia Fabricator Sdn Bhd.
- Client: PETRONAS CARIGALI SDN BHD (PCSB).
- Project Involved: ANGSI PHASE IV DEVELOPMENT PROJECT (Jacket)
QA/QC Coordinator.
Global Fab. Sdn Bhd.
08.2006 - 01.2008
- Main Contractor: Kencana HL Eng. Sdn Bhd.
- Client: CLOUGH INTERNATIONAL PTY LTD.
- Owner: OMV NEW ZEALAND PTE LTD.
- Project Involved: MAARI WELLHEAD PLATFORM DEVELOPMENT PROJECT (Jack-Up Rig)
QA/QC Coordinator.
Global Fab. Sdn Bhd.
04.2005 - 04.2006
- Main Contractor: Kencana HL Eng. Sdn Bhd.
- Client: GLOBAL PROCESS SYSTEM / PETROFAC (M) LTD.
- Project Involved: MOBILE OFFSHORE PRODUCTION UNIT (MOPU) CENDOR FIELD DEVELOPMENT CONVERSION PROJECT.
QC Inspector (Piping).
Global Fab. Sdn Bhd.
06.2005 - 11.2005
- Main Contractor: HL Engineering (M) Sdn Bhd.
- Client: ROC OIL (WA) PTY. LTD.
- Project Involved: CLIFF HEAD ‘A’ PROJECT WELLHEAD PLATFORM CH ‘A’ (Topside / Jacket).
Assistant QC (Structural).
HL Engineering (M) Sdn Bhd.
12.2004 - 06.2005
- Client: PETRONAS CARIGALI SDN BHD (PCSB)
- Project Involved: BARAM SOUTH DEVELOPMENT PROJECT BAJT-H (Jacket).
Assistant QC (Piping).
HL Engineering (M) Sdn Bhd.
08.2004 - 12.2004
- Client: TALISMAN (M) LIMITED.
- Project Involved: UOP SEAPEX MEMBRANE SYSTEM.
Technician Prod. (Structural).
HL Engineering (M) Sdn Bhd.
03.2004 - 09.2004
- Client: MURPHY SARAWAK OIL.
- Project Involved: WEST PATRICIA PRODUCTION PLATFORM “B” (WPPB) TOPSIDES.
QC (Structural).
Richcall Engineering Sdn Bhd.
01.2004 - 02.2004
- Main Contractor: Sime Semb Corp. Eng. Sdn Bhd.
- Client: MODEC INTERNATIONAL LLC.
- Project Involved: BACBAB FIELD DEVELOPMENT PROJECT.
Trainee NDT Technician / QA/QC Inspector.
Ramunia Fabricators Sdn Bhd.
07.2003 - 10.2003
- Client: PETRONAS CARIGALI SDN BHD (PCSB).
- Project Involved: KINARUT DEVELOPMENT PROJECT (Topside and Jacket) And ERB WEST ADDITIONAL COMPRESSOR MODULE.
Education
Diploma - Welding Technology of Engineering (MLVK)
12-2003
Certificate - Welding Arc & Gas (MLVK)
06-1999
Skills
Welding and structural inspection
Material and welding procedure verification
Non-destructive testing coordination
Visual & dimensional inspection
WPS & WQT witnessing
Quality assurance and control management
Safety and regulatory compliance
Inspection test plan development
NCR corrective action tracking
Project quality documentation
Certification
TWI Technology (S.E. Asia) Sdn Bhd, Kuala Lumpur
TRAINING AND COURSES.
- SEQU Offshore Safety Sdn Bhd.
- Basic Offshore Safety Induction and Emergency Training (BOSET) with Compressed Air Emergency Breathing System (CA-EBS).
- Basic Hydrogen Sulphide (H2S) Awareness
- Mercury Awareness
- IG Training Center (IGTC)
- Working At Height – Basic and Awareness Training
- National Institute of Occupational Safety & Health (NIOSH) / OSFAM
- Training / Certification by NIOSH and Offshore Structure Fabricators Association of Malaysia
- HSE HL ENGINEERING (M) SDN BHD
- HEMP (Hazard and Effects Management Process) Awareness, JSA (Job Safety Analysis) and PTW (Permit to Work)
- Construction Industry Development Board Malaysia (CIDB)
- Green Card Course
- INSTEP / Petronas
- PTW Level 1 (Awareness)
- Joint Integrity Competency Assessment (JIT Verifier)
Timeline
Welding & Structural Inspector - GPD/PD&T – PDOFF, PETRONAS Technical Services Sdn Bhd.
04.2020 - 12.2024
QC Coordinator. - Sapura Energy Berhad.
10.2018 - 03.2020
Welding Inspector (Piping). - Sinopec Engineering Group.
04.2018 - 09.2018
Welding Inspector. - Petra Resources Sdn Bhd.
01.2017 - 02.2018
Welding Inspector. - Petra Resources Sdn Bhd.
06.2016 - 12.2016
Welding Inspector. - Petra Resources Sdn Bhd.
05.2014 - 04.2016
Welding Inspector. - Petra Resources Sdn Bhd.
01.2014 - 05.2014
Welding Inspector. - Petra Resources Sdn Bhd.
08.2013 - 12.2013
Welding Inspector. - Petra Resources Sdn Bhd.
02.2013 - 09.2013
Welding Inspector. - Petra Resources Sdn Bhd.
09.2012 - 01.2013
Welding Inspector. - Petra Resources Sdn Bhd.
08.2011 - 09.2012
QC Inspector (Structural). - Power Goldentech Sdn Bhd.
04.2011 - 07.2011
Welding & Structural Inspector. - GPD/PD&T – PDOFF, PETRONAS Technical Services Sdn Bhd.
01.2009 - 03.2010
QA/QC Coordinator. - Global Fab. Sdn Bhd.
10.2008 - 12.2008
QA/QC Coordinator. - Global Fab. Sdn Bhd.
01.2008 - 10.2008
QA/QC Coordinator. - Global Fab. Sdn Bhd.
08.2006 - 01.2008
QC Inspector (Piping). - Global Fab. Sdn Bhd.
06.2005 - 11.2005
QA/QC Coordinator. - Global Fab. Sdn Bhd.
04.2005 - 04.2006
Assistant QC (Structural). - HL Engineering (M) Sdn Bhd.
12.2004 - 06.2005
Assistant QC (Piping). - HL Engineering (M) Sdn Bhd.
08.2004 - 12.2004
Technician Prod. (Structural). - HL Engineering (M) Sdn Bhd.
03.2004 - 09.2004
QC (Structural). - Richcall Engineering Sdn Bhd.
01.2004 - 02.2004
Trainee NDT Technician / QA/QC Inspector. - Ramunia Fabricators Sdn Bhd.
07.2003 - 10.2003
Institut Latihan Perindustrian (ILP) - Certificate, Welding Arc & Gas (MLVK)
Pusat Latihan Teknologi Tinggi (ADTEC) - Diploma, Welding Technology of Engineering (MLVK)