BS EN ISO 4126-3:2006 - Safety devices for protection against excessive pressure. Safety valves and bursting disc safety devices in combination – BSI British Standards

BS EN ISO 4126-3:2006

Safety devices for protection against excessive pressure. Safety valves and bursting disc safety devices in combination

Status : Superseded, Withdrawn   Published : April 2009 Replaced By : BS EN ISO 4126-3:2020
Conformity to regulation : Designated

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BS EN ISO 4126-3:2006 Safety devices for protection against excessive pressure. Safety valves and bursting disc safety devices in combination

BS EN ISO 4126-3 specifies the requirements for a product assembled from the in-series combination of safety valves or CSPRS (controlled safety pressure relief systems) according to BS EN ISO 4126-1, BS EN ISO 4126-4 and BS EN ISO 4126-5, and bursting disc safety devices according to BS EN ISO 4126-2 installed within no more than five pipe diameters from the valve inlet.

BS EN ISO 4126-3 specifies the design, application and marking requirements for such products, which are used to protect pressure vessels, piping or other enclosures from excessive pressure, and which comprise the bursting disc safety device, a safety valve or CSPRS and, where applicable, a short length of connecting pipe or spool piece. In addition, it gives a method for establishing the combination discharge factor used in sizing combinations.

Contents of BS EN ISO 4126-3:

  • Introduction
  • Scope
  • Normative references
  • Terms and definitions
  • Symbols
  • Design of combination
  • Installation of combination
  • Combination performance
  • Determination of combination discharge capacity factor, Fd, by testing
  • Derivation of combination discharge capacity factor, Fd
  • Alternative to testing for Fd
  • Certification of combination discharge capacity factor, Fd
  • Application and use of the certified combination discharge capacity factor, Fd
  • Marking and identification of combination devices
  • Certification
  • Preparation for storage and transport
  • Requirements of EU Directive 97/23/EC (PED



Standard NumberBS EN ISO 4126-3:2006
TitleSafety devices for protection against excessive pressure. Safety valves and bursting disc safety devices in combination
StatusSuperseded, Withdrawn
Publication Date30 April 2009
Conformity to regulationDesignated
Withdrawn Date06 October 2020
Normative References(Required to achieve compliance to this standard)ISO 4126-1:2004, ISO 4126-2:2003, ISO 4126-6:2003, EN 13480-6:2002, ISO 4126-5:2004, ISO 4126-4:2004, EN 13480-4:2002, EN 764-7:2002, CEN/TR 13480-7:2002, EN 13480-5:2002, EN 13480-2:2002, EN 13480-3:2002, EN 13480-1:2002
Informative References(Provided for Information)97/23/EC
Replaced ByBS EN ISO 4126-3:2020
International RelationshipsISO 4126-3:2006,EN ISO 4126-3:2006
Draft Superseded By04/30112263 DC
DescriptorsInstallation, Pressure equipment, Pressure vessels, Safety devices, Design, Marking, Pressure pipes, Safety valves, Valves, Performance testing, Bursting discs
ICS13.240
23.060.40
Title in FrenchDispositifs de sécurité pour protection contre les pressions excessives. Dispositifs de sûreté combinant soupapes de sûreté et disques de rupture
Title in GermanSicherheitseinrichtungen gegen unzulässigen Überdruck. Sicherheitsventile und Berstscheibeneinrichtungen in Kombination
CommitteePSE/18/6
ISBN978 0 580 53523 9
PublisherBSI
FormatA4
DeliveryYes
Pages22
File Size616 KB
Price£134.00


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