NF EN ISO 28721-1

Le présent document spécifie les exigences de qualité relatives aux appareillages, composants, appareils et accessoires réalisés en acier émaillé (y compris les revêtements en émail semi-cristallisé) et en acier moulé utilisés dans des installations de transformation. Il spécifie les exigences de qualité et les essais à effectuer par le fabricant ainsi que les actions nécessaires pour la réparation des défauts.

<p>This document specifies the quality requirements for apparatus, components, appliances and accessories of glass-lined steel (including semi-crystallized enamel coatings) and glass-lined steel castings used for process plants. It specifies the quality requirements and the tests to be carried out by the manufacturer as well as the actions to be taken to repair defects.</p> <p>It is also applicable to glass-lined pumps, pump components and fittings.</p> <p>It does not apply to glass-lined flanged steel pipes or glass-lined flanged steel fittings.</p> <p>NOTE 1 Provisions for glass-lined flanged steel pipes and glass-lined flanged steel fittings are given in ISO 28721-4.</p> <p>The test methods specified cover checking the enamel, the dimensional accuracy and the performance of apparatus and components.</p> <p>This document is applicable to new apparatus and components as well as used items that have been re-enamelled.</p> <p>It does not contain requirements regarding the chemical or physical properties of vitreous and porcelain enamels.</p> <p>NOTE 2 Examples of test reports are given in Annex A.</p>