NF EN ISO 21049

NF EN ISO 21049

November 2005
Standard Current

Pumps - Shaft sealing systems for centrifugal and rotary pumps

ISO 21049:2004 specifies requirements and gives recommendations for sealing systems for centrifugal and rotary pumps used in the petroleum, natural gas and chemical industries. It is applicable mainly for hazardous, flammable and/or toxic services where a greater degree of reliability is required for the improvement of equipment availability and the reduction of both emissions to the atmosphere and life-cycle sealing costs. It covers seals for pump shaft diameters from 20 mm (0,75 in) to 110 mm (4,3 in). ISO 21049:2004 is also applicable to seal spare parts and can be referred to for the upgrading of existing equipment. A classification system for the seal configurations covered by ISO 21049:2004 into categories, types, arrangements and orientations is provided.

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Main informations

Collections

National standards and national normative documents

Publication date

November 2005

Number of pages

232 p.

Reference

NF EN ISO 21049

ICS Codes

23.080   Pumps
83.140.50   Seals
75.180.20   Processing equipment

Classification index

E44-171

Print number

1 - 14/10/2005

International kinship

ISO 21049:2004

European kinship

EN ISO 21049:2004
Sumary
Pumps - Shaft sealing systems for centrifugal and rotary pumps

ISO 21049:2004 specifies requirements and gives recommendations for sealing systems for centrifugal and rotary pumps used in the petroleum, natural gas and chemical industries. It is applicable mainly for hazardous, flammable and/or toxic services where a greater degree of reliability is required for the improvement of equipment availability and the reduction of both emissions to the atmosphere and life-cycle sealing costs. It covers seals for pump shaft diameters from 20 mm (0,75 in) to 110 mm (4,3 in).

ISO 21049:2004 is also applicable to seal spare parts and can be referred to for the upgrading of existing equipment. A classification system for the seal configurations covered by ISO 21049:2004 into categories, types, arrangements and orientations is provided.

Table of contents
  • 1 Domaine d'application
  • 2 Références normatives
  • 3 Termes et définitions
  • 4 Systèmes de garnitures
  • 5 Généralités
  • 6 Exigences de conception
  • 7 Configurations spécifiques de garniture
  • 8 Accessoires
  • 9 Instrumentation
  • 10 Contrôle, essais et préparation pour le transport
  • 11 Transfert de données
  • A Procédure recommandée de sélection de garniture
  • B Normes de matériaux types pour les chambres de garnitures et les composants de garnitures d'étanchéité
  • C Feuilles de données de garniture mécanique
  • D Codes des garnitures mécaniques
  • E Relations entre les vendeurs de garnitures et les vendeurs de pompes
  • F Calculs de dégagement de chaleur et d'échange thermique
  • G Plans de balayage normalisés et équipements auxiliaires
  • H Liste de contrôle de l'inspecteur applicable à toutes les garnitures
  • I Formulaires d'essai de qualification de garniture mécanique
  • J Formulaire d'exigences de données relatives aux garnitures mécaniques
  • Bibliographie
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