Boiler work on 2650 September 2011
- John Ashworth
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Boiler work on 2650 September 2011
Photos and captions by Nathan Berelowitz, 17th September 2011
- Attachments
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- Elements that have been ultrasonic tested, are now being hydraulicly tested. Gabor and Steve tackle this damp task with Spikkles assisting.
- Boiler work on 19D 2650.17 Sept 2011 Capital Park 002.jpg (104.99 KiB) Viewed 1669 times
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- Gabby having a good pump!
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- There is a special fitting made to test the elements with water pressure. Gaby and Spikkles prepare it for the next set to be tested
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- The 19D waiting to be reassembled
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- Before and after.
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- If you were to lie on your back in the smokebox and look upwrds, this is what the header looks like, where the various elements will fit. These recessions are currently scaled up and will need to be cleaned and polished before receiving the element, whose heads, too, have to be polished.
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- The big difference in before and after. Nicely polished up. Now to replace the elements.
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- One of the newly replaced large flue tubes. Here in will soon lie a new element that will one day superheat the steam before it enters the steam chest.
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- John Dadford doing some really muscle taxing tasks of polishing the header prior to the elements being fitted.
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- John Dadford has cut away a previously welded smokebox patch, so as to get the blanked off header drain valve sorted out.
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- Lets look in the boiler.
The locomotive raises steam by the boiling of water. The steam will then rise, and on a conventional "domed" boiler, the steam will be collected there and taken to the superheater header where it is reheated to eliminate all the water content, before being sent to the steam chest. Large locomotives such as the 15F, 25 class, had bigger boilers and thus no room for a dome, so a number of "collector" pipes are fitted into the boiler at the highest internal point, to perform the work of the "dome".
A few class 19D were built with "domeless" boilers, and 2650 is one of them. Here we can see the collector pipes looking like rows of small trumpets. - Boiler work on 19D 2650.17 Sept 2011 Capital Park 024.jpg (57.09 KiB) Viewed 1669 times
- Lets look in the boiler.
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- A closer view towards the firebox crown plate end. The crown stays are visible, as are three lead filled fusible plugs that are the compulsory safety devices fitted to all boilers. Some locomotives have up to 5 fitted.
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- A perfect internal view of the boiler looking towards the firebox end. The rows of collector pipes can be clearly seen. Main internal steam pipe that runs the length of the boiler will take the collected steam onwards. Visible too, are the various boiler stays
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- Gabor at work with the polishing up of the element heads prior to fitting in the boiler tube
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- The close up view of the polishing process
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- Ready polished and awaiting insertion
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- Finally inserted. Special black graphite and oil mix has been smeared on the element ends and a final tightening. One down, many more to go!
- Boiler work on 19D 2650.17 Sept 2011 Capital Park 034.jpg (55.76 KiB) Viewed 1669 times
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- New member Theunis, assists Gabor with the element polishing
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- New member Thys at work punching out the sparks that have become embedded in the spark arrestor plate of the 19D
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- The blocked up spark arrestor with some nice captured sparks, which, if let loose while the locomotive is in operation, could cause lineside fires.
- Boiler work on 19D 2650.17 Sept 2011 Capital Park 038.jpg (130.19 KiB) Viewed 1669 times
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- A busy scene at Capital Park. The class 19D has had a number of flue tubes replaced and is being prepared for it's annual 3 year recertification. The elements have all been removed and pressure tested, but before replacing, a lot of work has to happen
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