Graham and the team has been busy on board the ship over the last couple of weeks in preparation for the boiler inspection.
The MCA surveyor was keen to ensure that the outside of the boiler is in as good condition as the inside and this has proven to be the case. We can expect this to happen every 10 to 15 years, but probably closer to 10. The last time the outside was inspected was approximately 10 years ago.
The method of inspection, Magnetic Particle Inspection (MPI) is a good way to determine if there are any small cracks appearing that would not normally be seen by the mark 1 eye. This complements the visual survey of the shell in general, as the MPI is conducted around each rivet head.
The first image shows the starboard boiler “undressed”.The double line of rivets fix the shell to the end plate. Note the excellent condition of the rivets after 61 years in situ.
The second image shows the starboard boiler access plate. Note different form of rivet heads, probably formed manually as this would be the last plate assembled to the boiler and hydraulic machines would not be able to access both sides of the rivet.
Posted by Lewis Folland, Thu 3 Dec 2015