Machined UB/UC Sections
Machined UB/UC Sections
(OP)
Has anyone ever come across the application or use of "machined" UB / UC sections for use within nuclear or any other safety-related sector?
By "machined sections" I mean the material is bought in as a billet and machined in-house to produce the UBs / UCs.
The machined sections need to be seismically qualified as part of a support structure, and I'm interested to understand any / all issues associated with this approach.
Thanks for any input.
By "machined sections" I mean the material is bought in as a billet and machined in-house to produce the UBs / UCs.
The machined sections need to be seismically qualified as part of a support structure, and I'm interested to understand any / all issues associated with this approach.
Thanks for any input.
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RE: Machined UB/UC Sections
RE: Machined UB/UC Sections
This is currently just an idea kicking around and is being investigated to assess its suitability. Clearly there are issues with it and I'm interested to garner people's thoughts. The issues you've raised have also been raised here, and the problem we have with using standard rolled UB / UC sections is the use of full pen welds (which is required) and also access for certain welds, hence the whole thing to be machined to remove the requirement for welds.
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RE: Machined UB/UC Sections
RE: Machined UB/UC Sections
Rolled sections are nominally cheaper than machined billet, but sometimes getting a short piece of an uncommon section to the place where you need it can be expensive enough to justify hogging from a simpler shape.
This sort of thing can make even more sense if the machining can also produce features that you would otherwise need to add, eliminating the fabrication and assembly cost of those features.
Mike Halloran
Pembroke Pines, FL, USA
RE: Machined UB/UC Sections
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