GUIDELINES FOR REPLACEMENT OF GENERATING BANK TUBES WITH EXPANDED JOINTS IN TWO-DRUM BOILERS

• This Technical Information Paper provides guidelines for the removal and replacement of generating bank tubes with expanded joints in two-drum power and recovery boilers.
• The objective of these guidelines is to minimize the potential for these and other problems by providing mill personnel with the information necessary to develop a well-defined material specification, project scope, and necessary quality control measures for proper execution of this work.
• These guidelines include discussion of both the traditional mechanical rolling method for expanding generating tubes into drums as well as recent developments in the use of hydraulic expansion.

It Provides information on:

• Early contractor involvement.
• Project scope.
• Contractor selection.
• Tube material specification.
• Generating bank tube fabrication.
• Tube removal.
• Expansion measurement.
• Chemical cleaning.

It Benefits:

• Engineer.
• Chemist.
• Project Manager.
• Laboratory Personal.
• Analyst.
• Researchers.
• Maintenance Manager.