Heat exchanger tube cleaning for plant shutdowns
Dezu cleans heat exchanger tube bundles with high pressure water lancing that restores flow and heat transfer to design — inside shutdown windows, day and night shifts. An HPAL nickel refinery has brought Dezu back for every minor and major shutdown since 2023, six shutdowns and counting, because the scale that defeats other methods is the scale we are hired for.
How does high pressure water clean heat exchanger tubes?
Flexible lances and rigid lances drive high pressure water through each tube, stripping scale and fouling from the tube wall and restoring the bore to bare metal. Water reaches the full circumference of every tube without mechanical scraping, so tube walls are cleaned rather than worn — and flow and heat transfer recover to design.
Can Dezu hold a shutdown schedule?
That is the work Dezu is retained for. An HPAL nickel refinery has brought Dezu back for every minor and major shutdown since its 2023 major shutdown — six shutdowns delivered to date — because our crews descale the exchangers and equipment that defeat conventional methods or consume the plant's own maintenance resources. Crews run day and night shifts to give tubes back inside the window.
What fouling can be removed?
Mineral scale, process deposits, polymerized product, and hard sulfide scale — the fouling classes found in geothermal, mineral processing, refinery, and petrochemical exchangers. Where fouling is extreme, ultra high pressure equipment up to 40,000 PSI from the NLB line Dezu distributes does the work mechanical cleaning cannot.
What tube cleaning work has Dezu delivered?
Shutdown Cleaning Program — HPAL Nickel Refinery (2023–2026)
High pressure cleaning at every minor (March) and major (September) shutdown since the 2023 major shutdown — six shutdowns delivered to date, retained on the plant's turnaround calendar.
Shutdown Cleaning — Nickel Processing Plant (2023)
High pressure descaling during plant shutdown, same scope family as the HPAL program. See all delivered work at projects.
Ways to work with us
See the technology work on your actual problem before committing.
Hire Dezu as your specialized contractor, crews, equipment, and method.
Run our equipment on your site, with or without our operators.
Purchase your own units as the exclusive or authorized Philippine channel.
Keep your fleet running with service and genuine spare parts.
Build your own capability with operator training to OEM standards.
Planning a turnaround?
Send the exchanger list, tube counts and sizes, fouling history, and the window. We reply with a crew plan and a scope-based quotation.