NF EN ISO 4126-10

NF EN ISO 4126-10

April 2024
Standard Current

Safety devices for protection against excessive pressure - Part 10 : sizing of safety valves and bursting discs for gas/liquid two-phase flow

This document specifies the sizing of safety valves and bursting discs for gas/liquid two-phase flow in pressurized systems such as reactors, storage tanks, columns, heat exchangers, piping systems or transportation tanks/containers, see Figure 2. The possible fluid states at the safety device inlet that can result in two-phase flow are given in Table 1.NOTE          The pressures used in this document are absolute pressures, not gauge pressures.

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Main informations

Collections

National standards and national normative documents

Thematics

QSE, Gestion des risques et SST, Sécurité

Publication date

April 2024

Number of pages

92 p.

Reference

NF EN ISO 4126-10

ICS Codes

13.240   Protection against excessive pressure
23.060.40   Pressure regulators

Classification index

E29-417-10

Print number

1

International kinship

ISO 4126-10:2024

European kinship

EN ISO 4126-10:2024
Sumary
Safety devices for protection against excessive pressure - Part 10 : sizing of safety valves and bursting discs for gas/liquid two-phase flow

This document specifies the sizing of safety valves and bursting discs for gas/liquid two-phase flow in pressurized systems such as reactors, storage tanks, columns, heat exchangers, piping systems or transportation tanks/containers, see Figure 2. The possible fluid states at the safety device inlet that can result in two-phase flow are given in Table 1.

NOTE          The pressures used in this document are absolute pressures, not gauge pressures.

Table of contents
  • 1 Domaine d'application
  • 2 Références normatives
  • 3 Termes et définitions
  • 4 Symboles, termes abrégés et figures
  • 5 Champ d'application de la méthode
  • 6 Étapes du dimensionnement
  • A Identification des scénarios de dimensionnement
  • B Exemple de calcul du débit massique à décharger
  • C Exemple de calcul du flux massique déchargeable et de la variation de pression à travers les systèmes de ligne d'évents raccordés
  • D Facteur environnemental
  • ZA Relation entre la présente Norme européenne et les exigences essentielles concernées de la Directive 2014/68/UE (Équipements sous pression)
  • Bibliographie
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