ISO 8502-2:2005
2005-10
Resumen
ISO 8502-2:2005 describes a method for the determination of chloride-containing salts that are readily soluble in water and are present on a steel surface. The method is also applicable to previously coated surfaces. It will normally be used in a laboratory using washings sampled from surfaces on site.
ISO 8502-2:2005 is applicable to the determination of salts that have been deposited on the steel surface before, during or after the cleaning operations.
ISO 8502-2:2005 is not applicable to surfaces treated with chromate, nitrite or amine, which are commonly used as inhibitors in the water when wet blast-cleaning. This is because a chromate concentration of 10 mg/l or greater or a nitrite concentration of 20 mg/l or greater in the wash water interferes with the determination of the chloride. Also the amine inhibitors can form a hydroxide boundary layer (not water soluble) over the substrate and prevent the water from contacting the underlying salt for its removal. An iron(III) ion concentration of 10 mg/l also interferes with the determination, but the iron(III) ions are concentrated in the rust deposits, which are removed from the test solution by filtration.
Informaciones generales
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Estado: RetiradaFecha de publicación: 2005-10
Versión corregida (en): 2006-01
Versión corregida (fr): 2006-01Etapa: Retirada de la Norma Internacional [95.99] -
Edición: 2Número de páginas: 6
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Comité Técnico :ISO/TC 35/SC 12ICS :25.220.10
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Ciclo de vida
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Anteriormente
RetiradaISO 8502-2:1992
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Ahora
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Revisada por
PublicadoISO 8502-2:2017