This standard establishes guidelines to prevent most forms of environmental cracking of weldments in carbon steel refinery equipment, including pressure vessels, heat exchangers, piping, valve bodies, and pump and compressor cases. Weldments are defined to include the weld deposit, base metal HAZ, and adjacent base metal zones subject to residual stresses from welding. It defines standard practices for producing weldments in P-No. 1 steels resistant to environmental cracking in corrosive petroleum refining environments. This standard is maintained by Task Group 326.
NACE SP0472-2015 History
NACE SP0472-2020
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NACE SP0472-2015
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NACE SP0472-2010
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NACE SP0472-2008
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NACE RP0472-2005
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NACE RP0472-2000
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