🧩 RELIABLE EXECUTION
What We Do
🧩 EFFECTIVE ENGINEERING
At Sustech Engineering, we deliver practical, high-quality engineering and project management solutions across the full Project Lifecycle. From concept and design through to execution, operations, and asset integrity, we specialise in small to medium greenfield developments and complex brownfield or shutdown projects. With a multidisciplinary team and a track record across oil & gas, renewables, minerals, and utilities, we are your trusted partner for delivering results where it matters most.
🧩 PRACTICAL SOLUTIONS
Why Choose Sustech?
✅ Chartered & Experienced Multidisciplinary Team
✅ Local Expertise + Global Delivery Standards
✅ Agile, Client-Centric Approach
✅ Proven Project Track Record
✅ Integrated Engineering + Digital Capabilities
OWNER’S ENGINEERING
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Concept study
Option screening study
Pre-feasibility study
Feasibility study
Pre-FEED
FEED Study
Technical due diligence study
Material selection study
Technical analysis for economic feasibility study
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Project oversight for ownership
Scope development and management
Project development and costing
Project regulatory approval support
Engineering procurement construction management (EPCM)
Construction work pack preparation
Vendor assessment and package management
Commissioning and decommissioning support
Secondment of capable engineers and project managers
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Assessment of existing assets for modification projects
Technical and quality assurance design review
Troubleshooting design/review/overview/ advice
Debottlenecking design/review/overview/ advice
Design services and review of designed deliverables
Technical compliance support
Litigation support providing independent expert technical perspective
ASSET MANAGEMENT
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Systems engineering
Shutdown planning
Asset life cycle planning
Tender preparation and evaluation
Loss prevention review
Expedited fit for purpose solutions
Piping and pipeline reliability-integrity engineering health study
Residual life estimation for existing assets
Forensic engineering study
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Structural analysis in Space Gass and STAADPro
Asset integrity, API 579, AS 3788 fitness for service engineering & study
Risk Based Inspection/Assessment
Structural Modification Engineering Design
Structure modelling and drafting
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Review of existing systems and practices for gap analysis
Assessments using robust data collection system procedure, that can be adjusted for your specific policy and procedure:
· Structural
· Tank
· Piping
· Pressure vessels
Guideline and standard development for site governance
Remediation design and engineering support for non-compliance
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Fitness for Service to API 579
Piping and pipeline reliability-integrity engineering health study including steam piping.
Estimation of residual life of atmospheric storage tanks
Structural integrity study
Condition monitoring
· Data collection
· Vibrational analysis
· Maintenance notifications
· Oil reports
Development of maintenance strategies and plan for plant and equipment
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Systems and software tools developed to:
Improve efficiency
Reduce human error from data entry
Strategy development and management for:
Optimisation of spare holding as per risk-based management
Spare Criticality Identification
Alignment with contract strategy and optimized holding cost
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Internal software tool systems to enable efficient management of data from ERP systems
Data Integrity Management
Data Validation/ Verification
Data Corrections
Engineering Technical Support
Blueprint Management
Engineering Documentation Stock take
Document Rectification/ As built
Change Management Procedure development
COMPLIANCE
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Type B appliance modification regulatory gas inspection and approval management to AS 3814
Gas distribution network technical safety compliance audit
Design and MDR verification as per:
· Work Health and Safety (Petroleum and Geothermal Energy Operations) Regulations 2022
· Petroleum Pipelines Act 1969
Regulatory technical audits for:
· Oil & gas
· Chemicals
· Mining
· Power
Water installations
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Safety & risk assessment
Process safety assessment
Mechanical installation safety assessment
Pipeline safety & risk assessment
Hazardous area classification
Facilitation of risk assessment, HAZID, HAZOP workshops
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Technical & code compliance verification audits to ASME, ASCE, and AS for the following industries:
· Oil & gas
· Chemicals
· Mining
· Power
· Water installations
Lift study and review
Pipeline re-lifing study as per AS2885
Assessment of WPS/WQR as per ASME Section IX, AS 2885.2, B31.1, B31.3
Pipelines as per AS 2885
Power & process piping as per AS 1210/ASME Sec VIII
Boiler parts as per AS 1228
Storage tanks as per API 650, API 620, AS 1940, AS 1692
3rd party inspection of manufactured products, workshop fabrication, site fabrication and installation by qualified inspectors
Inspection and remediation solutions for piping, pipelines, pressure vessels, storage tanks, FRP piping, and vessels
NICHE ENGINEERING
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CAESAR II – Pipe Stress Analysis
ETAP – Electrical System Analysis
SPACE GASS & STAAD PRO– Structural Analysis
PV Elite – Pressure Vessel Design
PVsyst – Solar Feasibility Analysis
Solidworks, Nozzle Pro – FEA
Drafting Software (AutoCAD, Solidworks)
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Concept exploration
Scale up economics assessment
Evaluation of pilot results
Design for compliance systems i.e environmental, waste, safety, etc
Development of testing regimes to optimize larger scale success
Hydrogen Generation Plant
Waste to energy Plant
Compressed Air Energy Storage
Carbon Capture
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Project support for provided design, procurement, and management of installation.
PSA to ASMEB31.1, B31.3, B31.4, AS4041, ISO14692, ASME Sec VIII
Pipe stress analysis for all common materials as well as niche selections like GRE and FRP
High pressure and high temperature critical power piping
Complete capability of stress analysis for different process fluids (water, ammonia etc.)
Full Engineering and modelling/ drafting for support & piping modification design
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Electrical local grid analysis & main grid connectivity analysis & troubleshooting
Power system modelling (i.e ETAP, DIgSilent)
Power system studies
Arc flash
Protection & Coordination
Short Circuit Calculations
Load Flow
Network/Grid reliability analysis
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Structural analysis in Space Gass and STAADPro
Asset integrity, API 579, AS 3788 fitness for service engineering & study
Risk Based Inspection/Assessment
Structural Modification Engineering Design
Structure modelling and drafting
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Assessment of historical operational documentation
· O&M Records
· Failure records
· Previous Equipment Performance assessments
Assessment of :
· End Of Physical Life
· End Of Capacity Life
Integrity Assessment of Equipment for identification of replacement, upgrade or retrofitting for components
Residual life extension planning and scoping:
· Procedures for repair/ retrofitting
· Equipment selection
Testing regime planning (NDE, visual, etc)
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Incident investigation
Program development
Cause mapping
Corrective action identification
Engineering for custom made solutions
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Finite element analysis (FEA) of equipment, structures, components in NozzlePro, Solidworks, ANSYS
· Modal analysis
· Buckling Analysis
· Fatigue Analysis
· Dynamic Analysis
· Static Analysis
Static equipment analysis
· Heat Exchangers
· Pressure Vessels
· Distillation Column
· Boilers
· Filters
· Heaters
· Pig receivers
· Piping
Valves
DESIGN & ENGINEERING
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Tank farm design to AS 1940, tank design and remediation to API 653
Double-skinned self-containing tanks for combustible and hazardous fluids as per AS 1692, UL 142
Design and specification of rotating machinery package
Brownfield piping design
Start air receiver sizing
Reformer tube coil review, connected external steam & hot air piping, support analysis and troubleshooting
Turbine tripping solutions, exhaust piping and support analysis
Synthesis gas starts up heater analysis, spring selection, operation start up methodology development and troubleshooting
Hydraulic cylinder mounting bolt failure analysis
Orifice flow measurement using Crane and AGA 3 methods
Engineering for piping blinds & spades, flange pressure/temperature rating, flange bolting by torque and water hammer
Engineering for coil springs, transmission shafts and explosion vents
Rolling contact stress, plate stress, triaxial stress calculations
Heat transfer through flat and tubular plates calculation
Engineering for skid lifting and sea fastening, centre of gravity, clevis, padeye
Bulk material handling
Jack up, FPSO, fixed leg offshore equipment and facilities engineering
Mechanical equipment package engineering
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Thickness calculation
MAOP, fracture control, energy discharge, penetration, road/rail crossing, buoyancy, upheaval, pipe stress, flow simulation, low temperature calculations
Network design and route selection in existing residential areas or new developments
Piping, valves, specialty item specifications and rationalization
Pipeline alignment sheet and pipeline assemblies drawing
Pipeline heat transfer model for conductive, convective, and radiant modes
Pipeline pigging system design
Gas:
· Design of wellhead skid, city gate station, field regulating station, isolation, compressor station, scrapper station, laterals, custody transfer metering station, pressure reduction station
· Low pressure distribution
· Pipeline design, engineering & analysis of natural gas & liquid hydrocarbon to AS 2885, EN 13480, ISO 14692, ASME 31.4, 31.8
· Consumer requirement determination, location classification and provision for high consequence areas
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Gas gathering, processing, transmission, laterals, metering, pressure reduction and distribution systems design
Fuel transportation, storage, and distribution systems design
Design and specification of process equipment packages
Single and multiphase liquid and gas pipe flow simulation
Single and multiphase line sizing
Gas pipeline flow and thermal modelling
Centrifugal gas compressor and pump modelling
Gas expander/compressor selection, modelling and simulation
Gas storage reservoir modelling
LPG straddle plant pipeline shrinkage model
Vertical gas scrubber sizing
Gas turbine selection
Gas heater and air cooler design
Vent stack design
Air compressor package design
Constructability and operability review
Heat transfer modelling and piping design
Multicomponent gas mixture thermodynamic and transport properties
Engineering for compressible orifice flows at high differential pressures
PSV sizing calculations as per AS, ASME, and API
PSV, PRV, TRV calculation and selection
Facility and pipeline blowdown thermodynamics
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Design and analysis of structures as per AS 4100, AS 3600, supported in Space Gass and STAADPro
Design and analysis of various power/process plant buildings and utility builds (workshop, warehouse, storage shed etc.)
Design of jetty and marine structures
Design of ship loaders
Design of offshore skid
Design of thrust blocks and anchor blocks
Design of foundations for reactors, equipment, and tank farms
Design and analysis of plant structures, technological platforms, pipe racks and supports
Design of communication and transmission towers
Design of substation, including transformer bunds, fire walls, switchyard structures
Design of retaining walls, water tanks, pits
Design of guard walls
Design and engineering of temporary structures
3D model development
Specification and work pack development
Virtual anchor calculation
Rail anchor bolt & foundation concrete assessment
Modularization studies
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Building power and earthing requirements to AS 3000
Substation design
Transmission and distribution network planning and design
Detail design of circuits and connections for HV, MV and LV switchgear
Detail cable routing underground and aboveground
Detail earthing design, layouts and calculations
Lightning protection design and calculations
Preparation of single-line diagrams
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Establish maintenance philosophies for instrumentation systems
Designing total instrumentation routine to meet individual requirements
Process instrumentation selection
Hazardous area equipment design and selection
Control and communication architecture
PLC I/O listing and component selection
Communications network design
Point to point wiring checks, function checks and loop checks to final handover of process instrumentation & control system including verification & validation of new and existing installations
Instrumentation calibration, loop checking and optimization
Diagnostic alarm checks, software modifications, & interlock checks as per the best industry practice for control systems (DCS, ESDS, PLC & SCADA)
Calibration & validation as per OEM recommendation for analysers
PROCESS INFRASTRUCTURE
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EPCM of water and wastewater treatment plants
EPCM of odour and sludge free modular sewage treatment plants
Contract provision for servicing, operation and maintenance of treatment plants
Expertise in different installation types (potable, demineralization, desalination etc.)
Expertise in different installation locations (remote, urban, mine etc.)
Equipment specifications and selection
Water recovery
Energy recovery
Brine disposal design
Due-diligence studies of existing systems
Technical assistance in regulatory approvals
Integration into hydrogen or ammonia production
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Open and combined cycle power systems (gas & steam cycle)
Gas and diesel power plants
Solar and wind power plants
Power block
Balance of plants
NON-PROCESS INFRASTRUCTURE
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Design of utility systems (steam, air, water, lube oil, water treatment, ventilation, and others)
Water and air distribution system review and modification design
Cooling water systems and cooling towers
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Rail loading, car dumpers, truck loading and unloading station concept design
Rail anchor bolt & foundation concrete assessment
Rail crossing, loop & train load out design
Dust suppression design
Haul & secondary access roads design
Modularization studies
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Design and engineering of diesel tank farms as per DSG, AS 1940 and AS 1962 requirements
Design & engineering of diesel tank farms as per DSG, AS 1940 and AS 1962 requirements
Double-skinned self-containing tanks for combustible and hazardous fluids as per AS 1692, UL 142
Diesel refueling stations for vehicles
Pipeline/transmission engineering for diesel conveyance
Constructability & operability review
Bund design and engineering
Wash pad design and engineering
Oil water disposal/treatment/collection
Lube oil system design
Tank remediation to API 653
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Air quality studies for mine sites
Air quality remediation engineering
Compressed air system sizing and selection
NET ZERO
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Operation emission reduction study
Net zero roadmap through hybrid and renewable power plants
Design of renewable energy utility integration
Process optimization to reduce carbon footprint
Design of pilot and standard size hydrogen plants
Construction and commissioning support for new technology proof of concept plants
Carbon capture and storage
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Energy Efficiency Assessment of current plant
Analysis for heat recovery opportunities
Thermal Insulation Audit
Opportunity for replacement or upgrade
Equipment Optimization i.e Boiler, Steam Turbine or HVAC
Conducted as per AS/NZS 3598
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Resource Assessment (PV-Syst)
EPCM For Solar Installations
Commissioning Management
System selection (Hybrid, battery, PV standalone, etc)
Design for integration into the existing grid / interconnection
Design of protection systems
Power Engineering Studies (ETAP)
Short Circuit Analysis
Arc Flash Studies
Coordination Studies
Load Flow Analysis
System Layout
Drafting (SLD’s, Layouts)
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Hydrogen technology and process selection
Financial modelling
Process design and simulation
Equipment selection and specification
Hydrogen and oxygen handling compliant with safety regulations and codes
Gas network grid modifications for hydrogen blending
Approval mapping and assistance (regulatory approval technical assistance, council approvals etc.)
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Simulations to quantify extractable CO2
Technology selection
Assessing extra technology for additional CO2 sources
Concept design development
Conveyance of captured CO2 (pipeline design & routing, metallurgy, configuration, safety management, construction support)
Investment decision support
MINERAL PROCESSING
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Gold Concentrating plant
Large copper concentrate plant
Nickel ore processing
Bauxite ore processing
Pyro processing
Gravity separation
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Expertise in SAG and Ball mill
Concept study for high-capacity mill
Specification preparation and vendor engineering
Mill expansion project and retrofitting
Mill commissioning assistance and troubleshooting
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Equipment selection
Layout design
Hopper design
Feed and discharge system design
Dust and air pollution control
Maintainability enhancement study
Vibration and structural stability control
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Basic design and optimization
Conveyor design as per CEMA or ISO 5048 & detail conveyor calculation
Conveyor starting & stopping analysis.
Conveyor drive system design
Design & selection of conveyor components
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Rail loading station
Rail Design review and assessments (i.e. concrete, anchor bolt, mounting bolt)
Car dumper station
Truck loading and unloading station.
Capacity enhancement
Transportation optimization study
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Stockyard capacity and layout selection
Reclaim hopper design.
Underground tunnels reclaim system design.
Stocking and reclaiming method selection
Covered stockpile system design.
Blending pile & system design
Transfer chute design
Ship Loader modification for optimization of process
Structural integrity assessment
Increase of throughput
Modular modification design