Maintenance & Turnaround


Mun Siong is backed by 50 years of track record and an established foundation, we are a recognized brand by the petroleum and petrochemical industries as their reliable and trusted contractor for term maintenance, turnaround and shutdown. 

Tank Rehabilitation and Maintenance Works

Mun Siong has a strong track record in maintenance, rehabilitation, repair and reconstruction of Tanks, following API 653 standard.

  • Demolition & Reconstruction or Conversion of Tank Roof: Internal/ External Roof, Cone Roof, Dome Roof 

  • External/ Internal Jack-up for Tank Bottom or Annular Plates Repair & Replacement

  • Installation of Tank Bottom Plate 

  • Repair & Replacement of Floating Roof Drain System, Rolling Ladder

  • Repair or Replacement of Tank Internal Heating Coil, Sparger Pipe System, Water Draw-off Piping

  • Repair & Replacement of Tank Shell/ Roof Nozzles, Manways, Venting Systems 

  • Repair & Replacement of Fire Water/ Foam Pipe System

  • Other Rectification Works: Tank Shell Buckling

  • Hydro-Test & Handover

  • Scaffolding

Scope of Services

  • Plant Maintenance

  • New or Existing Pipeline Work Including “Tie-Ins”

  • Structural Modifications & New Erection 

  • Rotating Equipment Maintenance

  • Static Equipment Maintenance (Exchanger, Column, Vessel) 

  • Furnace Maintenance Works (Includes Re-coil)

  • Electrical & Instrumentation Maintenance

  • Total Valve Management, Valves Change-Out Servicing & Certification

  • Divestment of Plant Equipment

  • Condition Monitoring

  • Isolation & Replacement of Parts & Equipment Column / Vessel / Heat Exchanger Maintenance

  • Storage Tank Maintenance & Rehabilitation

  • Plant Turnaround and Shutdown

  • Debottlenecking & Upgrading


We are an Approved Scaffold Contractor certified by the Ministry of Manpower. We provide scaffolding erection services and rental of materials along with our skilled and certified scaffold supervisors and erectors. We possess both tubular scaffolds and system scaffolds for high-reach access needs in plant constructions, modular fabrication projects and any other maintenance services.​


We offer both hot and cold insulation to deliver the best advanced protective solutions. Over the years, we worked with our partners and customers on both term maintenance contracts and project works to offer professional support and the technical skills necessary to achieve successful results.


From surface preparation to painting the finishing coat, painting can be performed as part of a turnkey contract for fabrication and construction or as part of a maintenance and repair project.