Photos from Dec. 9, 2013

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Photos from Dec. 9, 2013

Post by DaveLathrop57 on Sun Dec 15, 2013 4:44 pm


Patch on the right side sheet towards the front.


Patch at the top of the door sheet near the crown.


Crown stays: Baldwin Expansion Stays.




Looking down the barrel from various perspectives.

Bottom of the front tube sheet.



Rear tube sheet - here's what we need to think about.

DaveLathrop57

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Re: Photos from Dec. 9, 2013

Post by DaveLathrop57 on Sun Dec 15, 2013 5:05 pm

The quality of the patches applied in the firebox appears to be very good, and we have as of yet found no need to rep-lace more of the metal surrounding those areas. We will take a closer look after we completely descale the interior of the boiler.

The boilermakers removed the bottom of the tube bundle section of the rear tube sheet to remove the tubes after cutting them loose. This isn't an unusual practice in today's American industrial boiler industry. The boilermakers who are involved - Thompson Brothers from Eden, NC - have adopted 110 as their mascot, and are willing to provide us preferential rates in both materials and labor charges.

The inside of the front tube sheet is excellent - there is some small erosion at the bottom of the outside in the smokebox, which isn't an unusual situation. It isn't very deep, so we expect to weld it back to like-new thickness. A couple rivets may be replaced at the same time in that area due to eroded heads.

The area of concern at this point is the rear tube sheet......it shows erosion at the knuckle where it joins the crown sheet, and all the way across and down the tube bundle area, and a few spots of pitting below the tube bundle bear the barrel braces' points of attachment. The tube bundle section also bulges into the firebox about 2" in the center. The boilermakers are talking about welding up the entire area, but given the ligaments are pitted and that area is also deformed rather substantially, I'm thinking we might be better off cutting out the tube bundle area, weld repairing the knuckle and spots of pitting down below, then welding in a new tube bundle area robotically cut to match the original.

Ideas welcome.

Dave

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