ISO 4126-2:2018
Safety devices for protection against excessive pressure — Part 2: Bursting disc safety devices
This document specifies the requirements for bursting disc safety devices.
It includes the requirements for the design, manufacture, inspection, testing, certification, marking, and packaging.
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Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Materials
4.1 Selection of materials
4.2 Material specifications
4.3 Protection from corrosion
5 Types of bursting discs
5.1 Conventional domed bursting discs (Forward acting)
5.2 Reverse domed bursting discs (Reverse acting)
5.3 Flat bursting discs
5.4 Other types and designs
6 Bursting disc holders
6.1 Design
6.1.1 Pressure-containing capability
6.1.2 Other design requirements
6.2 Types
6.3 Connections
7 Back pressure supports
7.1 General
7.2 Opening back pressure supports
7.3 Non-opening back pressure supports
8 Temperature shields
9 Stiffening rings
10 Gaskets/seals
11 Assembly of bursting disc safety devices
11.1 General
11.2 Bursting disc safety devices with replaceable bursting disc assemblies
11.3 Bursting disc safety devices with non-replaceable bursting disc assemblies
12 Specified bursting pressure requirements
13 Inspection by the manufacturer
14 Test procedures
14.1 General
14.2 Pressure testing
14.3 Burst testing
14.3.1 General
14.3.2 Coincident temperature in the range 15 °C to 30 °C
14.3.3 Coincident temperature above or below the range 15 °C to 30 °C
14.3.4 Procedure for burst testing
14.4 Leak testing
14.4.1 General
14.4.2 Selection of acceptable leakage rate
14.5 Non-destructive examination
15 Certification
16 Product designation
17 Marking
17.1 General
17.2 Bursting discs or bursting disc assemblies
17.3 Bursting disc holders
17.4 Bursting disc safety devices with non-replaceable bursting disc assemblies
17.5 Ancillary components
17.6 Omission of markings
18 Packaging and storage
Annex A (informative) Packaging: marking, assembly instructions and documentation
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Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Materials
4.1 Selection of materials
4.2 Material specifications
4.3 Protection from corrosion
5 Types of bursting discs
5.1 Conventional domed bursting discs (Forward acting)
5.2 Reverse domed bursting discs (Reverse acting)
5.3 Flat bursting discs
5.4 Other types and designs
6 Bursting disc holders
6.1 Design
6.1.1 Pressure-containing capability
6.1.2 Other design requirements
6.2 Types
6.3 Connections
7 Back pressure supports
7.1 General
7.2 Opening back pressure supports
7.3 Non-opening back pressure supports
8 Temperature shields
9 Stiffening rings
10 Gaskets/seals
11 Assembly of bursting disc safety devices
11.1 General
11.2 Bursting disc safety devices with replaceable bursting disc assemblies
11.3 Bursting disc safety devices with non-replaceable bursting disc assemblies
12 Specified bursting pressure requirements
13 Inspection by the manufacturer
14 Test procedures
14.1 General
14.2 Pressure testing
14.3 Burst testing
14.3.1 General
14.3.2 Coincident temperature in the range 15 °C to 30 °C
14.3.3 Coincident temperature above or below the range 15 °C to 30 °C
14.3.4 Procedure for burst testing
14.4 Leak testing
14.4.1 General
14.4.2 Selection of acceptable leakage rate
14.5 Non-destructive examination
15 Certification
16 Product designation
17 Marking
17.1 General
17.2 Bursting discs or bursting disc assemblies
17.3 Bursting disc holders
17.4 Bursting disc safety devices with non-replaceable bursting disc assemblies
17.5 Ancillary components
17.6 Omission of markings
18 Packaging and storage
Annex A (informative) Packaging: marking, assembly instructions and documentation