To get the best performance out of a vessel it’s important that it maintains necessary operating capacity. While there are several preventative maintenance procedures that can prolong the life of the vessel, eventually a decision on retubing or replacing the unit will need to be made.
When it comes to removing tubes, there are many different options to choose from. Hydraulic or automated pulling options can be a great way to speed up the job, reduce tube sheet damage, and improve operator ergonomics. However, before selecting a pulling package, it’s important to consider the vessel type, tube condition, and space constraints
In recent years, the use of exotic materials in heat exchanger tubing has become a lot more common. While these materials are great for working in tough conditions, they can have be very challenging to work with as they often require more tooling and job time. This is especially true in tube removal where pulling spears are used. Tapping spears have become an effective way to overcome many of these issues.
With a variety of boiler tube removal methods out there, it can be difficult to determine the best approach for your application. Depending on the amount of expansion, age of the tube, and other wear factors, tubes can be extremely difficult to get out. Removing tubes through a king hole can be an easier method of removal, especially for operators with varying experience levels.
Boiler tube removal can be an extremely difficult process and the method used will vary depending on the application. The amount of expansion, as well as, the age of the tube and whether or not it was welded will all impact the removal process. Despite the challenging nature of removal, there are a few tips that can help make this tough job a little bit easier.
Similar to a shell and tube heat exchanger, air coolers are made up of stacked finned tubes with header or water boxes on either end of the vessel. While air cooler maintenance can be challenging, there are a few tips and tricks that can help make the process easier.
Tubes are welded for many different reasons, such as providing additional leak protection or to carry additional load. Although welds can be beneficial while the vessel is in service, it can cause some challenges during the removal process.
Geometry, materials, coatings, and application all influence the performance and life of a cutting blade. In order for it to perform well, it needs to be designed to work in a certain application. Using the incorrect cutting blade will reduce tool life and negatively impact cutting performance.
To pull tubes using a tube puller and spears, one of the first steps is to “set” the spear in the tube. This process is done by threading the spear into the tube ID with an impact wrench or by hand.
Tube pullers grip and pull the tube out from the tube sheet. There are a variety of tube removal tools available and each one has a specific use. Review the quick guide below to make sure you select the right tool for the job.
