What feature is provided for tube removal on water tube boilers?

The correct feature provided for tube removal on water tube boilers is that some tubes are omitted during assembly. In the design of water tube boilers, allowing for the omission of certain tubes during assembly facilitates the removal and maintenance of the remaining tubes. This is particularly important for ensuring that any damaged or fouled tubes can be replaced without the need to disassemble the entire boiler system.

Typically, the boilers are designed in such a way that not all tubes are rigidly connected, which aids in providing access to specific tubes while maintaining operational efficiency. This design consideration enhances the overall maintenance process, as it streamlines repairs and reduces downtime.