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+1 vote
answered Nov 4, 2014 by sicalamanto (1,560 points)
CRA piping should be erected subsequent to carbon steel piping.

Piping System is usually installed by the construction teams to facilitate the fabrication of modules in the most efficient manner.  Most often large pipe spools are installed first followed by smaller pipe spools.  Access is also a key factor for pipe installation.  The fabrication yard will provide input for piping installation sequencing and will ensure that all CRA piping is protected from contamination.

CRA piping should be protected from contamination through blanketing (wrapping).  The wrapping should be continuously inspected to ensure integrity and should not be removed until commissioning of systems.
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