About Us

SUSTECH ENGINEERING PTY LTD is a multidisciplinary engineering consultancy providing engineering and technical services of the highest professional standard to WA’s key mining-mineral processing, oil & gas, chemical-fertiliser, pipelines, water engineering and building industries with a key emphasis on safety & sustainability.

We create longer lasting value for time through the knowledge and experienced professional services of our specialists.

Our Principals and Associates have extensive experience across oil & gas, power, mining, chemical and water engineering with combined experience of over hundred years in complementary disciplines of Project Engineering.

Our team members have worked in different countries and are familiar not only with different cultures, but also relevant engineering practices codes and standards.

We bring in combined local and global knowledge for the benefit of Australian industries as per the local conditions and Australian industry regulations.

We put our clients first.



SUSTECH ENGINEERING PTY LTD aspires to be knowledge based consulting engineering company delivering high value added professional engineering services to our clients. We want to create a legacy of safe, sustainable and innovative engineering of high integrity and standardisation.


SUSTECH ENGINEERING PTY LTD actively engages with the local community. We are proud supporters of the street smart handbook and the PCYC programme.


SUSTECH ENGINEERING PTY LTD shall provide engineering and technical services of highest professional standard to the industry with a strong focus on safety, sustainability and innovation. We shall use our knowledge to create longer lasting value for time through efficient risk management.

Pen Portrait of Key Personnel


Soumen is a Mechanical Engineer with 20+ years of international experience in Piping, Pipeline, Mechanical Engineering and Project Management in the fields of Oil & Gas, Power, Mining-Metal and Chemical industries across India, China, Malaysia and Australia. He is familiar with most contracting options i.e. PMC, EPCM, Lump-Sum Turnkey, Alliance, Risk Reward, Reimbursable, Cost+Fee. He has working experience with various E&Ps, Contractors & Licensors e.g. XOM, Shell, Petronas, Woodside, CoP, and Bechtel. He has special ability of problem solving in challenging and complex work situation. He is an engineer with positive attitude and has natural leadership ability with a bearing of responsibility and integrity. He believes in team effort and knowledge sharing as key to success. He has established track record as independent validator of design and MDRs of pipelines, facilities, process and power piping, tank farms and pressure vessels. He has successfully executed Project management and engineering management.


Dennis began his career in 1975 and has since gathered extensive design experience in oilfield production pipelines, plant piping systems, gas treating, gas transmission, gas metering, gas compression and mechanical equipment packages including pressure vessels, pumps and compressors. His skills include project management, engineering management, design supervision, site supervision, commissioning, start-up assistance, specification of process equipment and rotating machinery packages. He has acted as client’s representative. Dennis’ activities include technical studies, verification and validation of major facility design and construction records, design and specification of oilfield pipeline systems in steel, glass reinforced plastics (GRP), high density polyethylene (HDPE) and reinforced thermoplastics (RTP). Dennis has developed design methodologies for the application of GRP and RTP to high pressure pipelines and HDPE for low pressure pipelines and has been a key contributor to updating various AS and ISO Standards for these materials.

SANKAR GHOSH Principal Mechanical Engineering Consultant

Sankar is a Mechanical engineer with over 38 years of experience in the design and engineering of mineral processing (Gold, Copper, Nickel, Alumina, Diamond), carbon black projects, cement projects and chemical plants in Australia and overseas. He has successfully executed conceptual design, feasibility study, detailed design and engineering, plant operation, productivity improvement studies, trouble shooting, testing and commissioning management, technical advising, review and estimation. He has specialist knowledge and experience as an equipment engineer in preparation of technical specification, tender document, technical evaluation and placement of order for large dry and wet Grinding Mills, Rotary Kilns, Calciners, Reactors, Ship Loaders, Ship Unloaders, large Apron Feeders, Stackers and Reclaimers.

MAHMOUD KEIKHA  Principal Process Engineering Consultant

Mahmoud has worked for 40 years as a professional Process Engineer within the international Oil and Gas industry in Europe, Middle East, North Africa and Australia. His experience covers conceptual study, feasibility study, front end engineering and design, and detailed engineering for topsides of offshore facilities (FPSO & Fixed Platforms) as well as onshore refineries, gas treating plants (sweetening & dehydration), petrochemical plants, LPG and LNG facilities. He is experienced in project execution from FEED to commissioning including procurement activities, bid evaluation for process equipment. He has extensive knowledge of using Questor software for field development and economics studies of onshore and offshore oil and gas facilities. He is proficient in all industry standard process software.


Our Associates

JOHAN LOMBARD Principal EC&I Engineer

Johan is an EC&I engineer with 20+ years of international experience in oil and gas, mining, and power plants.

TIRTHANKAR BANERJEE Principal Renewable Energy Engineer

Tirthankar is a Renewable Energy Engineer with 35+ years of international experience

The principals and associates of Sustech have worked across several small and large projects in companies ranging from multinationals to locals. The projects are categorized into following:



  • Design and specification of oilfield waterflood network in GRE for Chevron, Barrow Island
  • Design and specification of oilfield flowline network in GRE for Chevron, Barrow Island
  • Engineering manager for Chevron, Barrow & Thevenard Island services contract
  • Remediation of onshore oilfield pipelines in CS and GRE for Chevron, Barrow Island
  • Development of piping specifications to ASME B31.3, AS 2885, EN 13480, ISO 14692
  • Develop documentation for approval of spoolable RTP pipe for high pressure oilfield pipelines
  • Independent engineer role for major investors and bankers in oilfield projects
  • Thar Jath Development Project, Sudan (Upstream crude processing project) –  Client: WNPOC (Joint Venture of Petronas, ONGC  Videsh and Sudan Petroleum)
  • Onshore Desander Skid Project and Offshore Desander Skid Project – Client: Exxonmobil; SHELL SARAWAK Sdn Bhd
  • Piping maintenance support in off-shore platform  –   Client: MODEC
  • Technical Trouble shooting in Puffin FPSO project  –   Client: AIBEL


  • CSG processing and compression facility  –  Client: QGC
  • Option study of pipeline materials for flow lines of coal seam methane gas and CAPEX and OPEX estimate in  GLNG Upstream Pipeline study  –  Client: Santos
  • Member of ISO 14692 workgroup to re-write the standard for GRP pipe applications


  • Bass Gas Asset and Operation Integrity Management Advisory Services project  –   Client: Origin energy


  • Design of SEAGas pipeline compressor stations
  • Compression unit and compressor wheel selections for DBNGP and SEAGas pipelines
  • Independent third party validation/ verification of design, MDR and relifing study documents for gas pipeline, compressor stations, pipeline looping, metering stations, fuel gas conditioning and pressure reduction stations, gas heating system pipeline laterals – DBNGP Expansion, Parmelia Pipeline, Newman Power Station  project; Karratha Power Station Project; HEGT Metering station; Neerabup Power Station –  Client: DBP, APA, W.Net Energy, EPIC, Leighton, BBL.
  • HEGT fuel gas pipeline, Domgas metering station, Gorgon upstream joint venture metering station FEED,  EGP Capacity Expansion – Compression pre-FEED & QCS04 Construction Support, QGP Capacity Expansion – Compression FEED & Detailed Engineering, Cape Lambert power station gas conditioning project  –  Client: Verve Energy, Woodside, Chevron, Alinta Asset  Management, Jemena, MCC CL, BBL
  • Detailed audit and FEED engineering for MAOP upgrade of the DBNGP
  • FEED engineering for DBNGP Stage 2 and Stage 3 capacity expansion upgrades
  • Unaccounted for gas (UAFG) modeling and software development for DBNGP
  • Prepare AS 2885 Issue Paper and Appendix AA on application of GRE to high pressure pipelines


  • Concept engineering and cost estimation for gas transmission and distribution to remote towns in the BAG pipeline route – Client: Department of State Development WA


  • Tatipaka Refinery, ONGC in PV Elite & ADLPIPE.


  • Design and specification of water pipelines in GRE for BP Refinery Kwinana
  • Independent third party design verification of pressure vessel modification as per  AS1210 Wagga Wagga pressure vessel certification project  –  Client: Southern oil
  • Ultra Low Sulphur Diesel revamp project   –  Client: Shell, Texas, USA
  • CSPC Nan Hai Petrochemical Refinery Project  –  Client: Shell, CSPC, China


  • Diesel Storage Facility and fuel management system Concept, FEED, Detail Engineering and cost estimation  –  Pilbara Iron – Fuel Infrastructure & Logistics; Preliminary Engineering Study, RGP6 project; Sino Iron Ore fuel supply project  –  Client: BHPBIO through FAST JV; Darwin LNG fuel storage enhancement; Sino Iron; Conoco Philips
  • Independent third party design verification of drilling base oil prefabricated tanks Dampier Port Authority  –   Client: Dampier Port Authority through Dialog Services



  • Root cause analysis for ruptured turbine exhaust steamlines and turbine lube oil flange leakages; Re-running the breakdown boilers, fix the bailey header supports and yielded water walls; Review of Main Steam pipe, HRH, CRH and hanger system of boiler at CESC and WBPDCL
  • 2×120 MW coal based power projects of Tata Electric Company, Jamshedpur.
  • Cogen Power Plant, Sugar Tech. Int., Philippines.
  • RLA study of old power plants MPSEB Korba, TISCO Jamshedpur.
  • Giral mine pithead lignite based 125 MW power plants
  • Springerville (UK) Power Project


  • Rijnmond (Holland) Combined Cycle Power Project (CCPP); Spalding (UK) (CCPP) Capacity – Each 800 MW  –  Client: Intergen


  • Baggasse based cogeneration power plant in Globe Engineering/ UB Engineering, BOOT project


  • Designing Bio Gas based Cogeneration plant with GEA  –  Client: Water Corp


  • Designing small to large scale Solar Power Installations in Australia and abroad



  • Swan River Oxygenation project  –  Client: Swan River Trust


  • HCL project of MDI train at CaoJing Shanghai;   Client  –   Bayer Material Science
  • Preliminary engineering and CAPEX estimation  in Tiwest expansion project  –  Client: Tiwest



  •  Design and detailing of mine headframes and shaft equipment – Client: Golden Spec JV Gold Mine
  • Design and detailing of Mt Newman Ore Sampler – Client: BHP
  • Planning and site installation of equipment Foundry Sand Plant Upgrade – client: Wundowie Iron and Steel
  • Site management of contractors and site engineering Hill 50 Gold Mine Upgrade Client: Western Mining Corporation
  • Site engineering at minesite and Fortescue River rail crossing – Client: Hammersley Iron
  • West-cliff coal washery detail engineering, client BHP Billiton 


  • Project Engineering Management – hydrogen, syngas and anhydrous ammonia pipeline- Client: BHPB Nickel West Kwinana
  • Duplex stainless steel tank replacement; Replacement of existing Copper Boils (Brownfield activity)  –  Client: BHPB Kwinana Nickel Refinery
  • Comalco Alumina Refinery (Australia) tankage and pumping


  • Cooling water system and piping design of Blast Furnace LD converter & ; Client – TISCO
  • Incident trouble shooting of LP steam turbine
  • RH degasser unit by steam ejectors at Bhilai Steel Plant


  • Safety shower audit and re-engineering for all Western Mining minesites
  • Fuel and Lube Oil storage and management system at different BHPB and Rio Tinto sites