STS Group is proud to have successfully delivered a major turnaround project for EQUATE Petrochemical Company, supporting both the Ethylene Unit (EU) and the Ethyl Benzene Styrene Monomer (EBSM) packages.

This large-scale turnaround involved meticulous planning and seamless on-site execution, with a workforce of over 3,000 personnel. A total of 861,280 manhours were completed with zero lost-time injuries (LTI), reflecting a strong commitment to safety and operational excellence.

In Ethylene Unit II, critical maintenance activities included:

  • Replacement of packing in the C2301 water wash drum

  • Full tray replacement in the C2317 oily water stripper

  • Servicing of approximately 200 control valves

  • Hydro jet cleaning of 21,000 heat exchanger tubes

  • Overhaul and replacement of furnace Motor-Operated Valves (MOV)

In the EBSM unit, key achievements included:

  • Hydro jet cleaning of 52,760 tubes within a single heat train in a confined space

  • Cleaning of 19,258 tubes in a vertical exchanger without man entry using advanced sentinel technology

  • Early completion of floating roof replacement in a benzene storage tank

This milestone underscores STS Group’s capability to execute complex turnaround projects while enhancing asset reliability and long-term performance.

Congratulations to EQUATE and all partners involved in delivering this outstanding success.