Viet Thang Loi Technology Company Limited delivers comprehensive engineering solutions and certified Ex equipment for all refinery process units such as CDU/VDU, RFCC, Hydrocracker, Reforming, NHT, Merox, Tank Farm, Utilities & Offsite. Our solutions comply with IECEx, ATEX, API standards and IEC 60079, ensuring long-term stability in harsh petrochemical environments.

Electrical Systems & Lighting for Hazardous Areas

• Ex control and distribution panels: designed for pumps, soft starters, large motors, control valves and interlock systems.

• Explosion-protected lighting: LED luminaires resistant to chemicals and high temperature for cracking, reforming and flare areas.

• Ex connectivity infrastructure: cable glands, junction boxes and terminal boxes certified for Zone 1/2 in process and pipeline areas.

Signal Protection & Process Safety

• Intrinsic safety & signal isolation: galvanic/IS isolators for instrumentation loops in Hydrocracker, NHT and high-sensitivity measurement lines.

• Industrial surge protection: protecting DCS/PLC, ESD, F&G loops and online analyzers against transient surges.

• Power surge suppression: AC/DC protection for distributed control cabinets, UPS systems and sensitive field instruments.

Instrumentation & Monitoring for Refinery Processes

• Toxic & flammable gas detection: LEL, H₂S, SO₂, O₂ and toxic gas monitoring in distillation, cracking and gas treatment units.

• Process measurement: pressure, level, temperature and flow measurement for crude, feedstock, hydrocarbons, steam and utilities.

• Substation & equipment alarming: thermal hotspots, leakage current detection, phase-loss detection and transformer monitoring.

Automation, Industrial IoT & Real-Time Monitoring

• Edge gateways: data acquisition from field devices and integration with SCADA/DCS for analytics and optimization.

• Energy & performance monitoring: optimization of electrical loads, steam, cooling water, nitrogen and instrument air.

• Rotating equipment monitoring: vibration analysis, thermal diagnostics and predictive maintenance for pumps and motors.

Engineering & Field Services

• Site survey & Ex inspection: hazardous area assessment, equipment conformity checks, grounding and bonding inspection.

• Engineering design: SLD, panel layout, wiring diagrams, hook-up drawings, I/O lists and FAT/SAT.

• Installation & commissioning: electrical/instrumentation installation and system commissioning for refinery units.

• Maintenance & calibration: sensor calibration, loop checking and preventive maintenance.

Typical Application Areas

• CDU / VDU distillation units

• RFCC, Hydrocracker, Hydrotreating, Naphtha Reforming

• Tank Farm, Jetty, Loading and Offsite/Utility systems

• Flare systems, Gas processing and SRU units