Case Studies

Boiler Tube Cleaning - Boiler Tube Cleaning System (BTC)

Hydroblasting Services

Petroleum Refining

Completion Date: April 2015

Challenge: Cleaning tubes in a tight or confined space presented difficulties for the client. Previous service providers had committed to cleaning their boiler tubes only for them to foul after a short period of time because all the sediment was not accessible. The client had been seeking a service provider with an innovative process that can clean the boiler tubes inside the drums of their boiler. 

Solution: Evergreen designed a Boiler Tube Cleaning System (BTC) that required minimum vessel entry. Using 20K psi cleaning power at a constant feed rate, depending on the scale and tube configuration, Evergreen cleaned at adjustable speeds up 1’ per second.  The in/ out speeds were adjusted independently.  We used a 40’ rail that attaches in 10’ sections, so more could be added if necessary.  Evergreen also added a remote camera that made it possible to index each tube on a 9” monitor mounted on the control panel.

Benefit: The boiler was cleaned safely in 32 hours (including set-up), where it had taken an average of 48 hours in the past.  Use of the BTC enabled the cleaning of rust and calcium carbonate from hard to access areas of the boiler.  The tool made a tough and dangerous job safer while the project was completed faster and more efficiently. 

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