NF EN ISO 4126-5
NF EN ISO 4126-5

NF EN ISO 4126-5

September 2013
Standard Current

Safety devices for protection against excessive pressure - Part 5 : controlled safety pressure-relief systems (CSPRS)

ISO 4126-5:2013 specifies the requirements for controlled safety pressure relief systems (CSPRS) irrespective of the fluid for which they are designed.It is applicable for main valves having a flow diameter of 4 mm and above which are for use at pressures of 0,1 bar gauge and above. No limitation is placed on temperature.ISO 4126-5:2013 is a product standard and is not applicable to applications.

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Main informations

Collections

National standards and national normative documents

Thematics

Sécurité, Gestion des risques et SST, QSE

Publication date

September 2013

Number of pages

31 p.

Reference

NF EN ISO 4126-5

ICS Codes

13.240   Protection against excessive pressure
23.060.40   Pressure regulators

Classification index

E29-417-5

Print number

1 - août 2013

International kinship

ISO 4126-5:2013

European kinship

EN ISO 4126-5:2013
Sumary
Safety devices for protection against excessive pressure - Part 5 : controlled safety pressure-relief systems (CSPRS)

ISO 4126-5:2013 specifies the requirements for controlled safety pressure relief systems (CSPRS) irrespective of the fluid for which they are designed.

It is applicable for main valves having a flow diameter of 4 mm and above which are for use at pressures of 0,1 bar gauge and above. No limitation is placed on temperature.

ISO 4126-5:2013 is a product standard and is not applicable to applications.

Replaced standards (1)
NF EN ISO 4126-5
NF EN ISO 4126-5
February 2006
Standard Cancelled
Safety devices for protection against excessive pressure - Part 5 : controlled safety pressure relief systems (CSPRS)

Table of contents
  • Avant-propos
    iv
  • 1 Domaine d'application
    1
  • 2 Références normatives
    1
  • 3 Termes et définitions
    1
  • 4 Symboles et unités
    7
  • 5 Conception
    7
  • 5.1 Généralités
    7
  • 5.2 Raccordements d'extrémité
    9
  • 5.3 Exigences minimales pour les ressorts
    10
  • 5.4 Matériaux
    10
  • 6 Essais de production
    11
  • 6.1 Objet
    11
  • 6.2 Généralités
    11
  • 6.3 Essai hydrostatique
    11
  • 6.4 Essai pneumatique
    12
  • 6.5 Ajustement de la pression de début d'ouverture ou de la pression de réglage à froid
    12
  • 6.6 Essai d'étanchéité du siège
    13
  • 6.7 Joints sous pression
    13
  • 7 Essais de type
    13
  • 7.1 Généralités
    13
  • 7.2 Essais de détermination des caractéristiques de fonctionnement
    14
  • 7.3 Essais de détermination des caractéristiques de débit
    16
  • 7.4 Détermination du coefficient de débit
    18
  • 7.5 Certification du coefficient de débit
    18
  • 7.6 Certification d'un CSPRS
    18
  • 8 Détermination des performances d'un CSPRS
    18
  • 9 Dimensionnement d'un CSPRS
    18
  • 10 Marquage et plombage
    19
  • 10.1 Marquage
    19
  • 10.2 Plombage d'un CSPRS
    20
  • Bibliographie
    21
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