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BS EN 13445-4:2021 – TC

BS EN 13445-4:2021 – TC

$280.87

Tracked Changes. Unfired pressure vessels – Fabrication

Published By Publication Date Number of Pages
BSI 2021 156
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This document specifies requirements for the manufacture of unfired pressure vessels and their parts, made of steels, including their connections to non-pressure parts. It specifies requirements for material traceability, manufacturing tolerances, welding requirements, requirements for permanent joints other than welding, production tests, forming requirements, heat treatment, repairs and finishing operations.

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PDF Pages PDF Title
1 compares BS EN 13445-4:2021
2 TRACKED CHANGES
Text example 1 — indicates added text (in green)
6 European foreword v
1 Scope 1
2 Normative references 2
3 Terms and definitions 3
4 Requirements for manufacturing and subcontracting 3
4.1 Manufacturing 3
4.2 Subcontracting 4
5 Materials 4
5.1 General 4
5.2 Material traceability 4
5.2.1 General 4
5.2.2 Identification system 5
5.2.3 Visibility 5
5.2.4 Review of material certification and material identification 5
5.2.5 Transfer of markings 6
6 Manufacturing tolerances 6
6.1 Surface geometry of welds 6
6.2 Middle line alignment 6
6.3 Surface alignment 8
6.3.1 Surface misalignment between parts 8
6.3.2 Joining of parts of different thickness 8
6.4 Tolerances for vessels subjected to internal pressure 8
6.4.1 External diameter 8
6.4.2 Out of roundness 8
6.4.3 Deviation from the longitudinal axis 9
6.4.4 Irregularities in profile 9
6.4.5 Local thinning 11
6.4.6 Dished ends 12
6.5 Tolerances for vessels subjected to external pressure 15
6.6 Structural tolerances 15
7 Weld details 15
7.1 General 15
7.2 Vessels or parts made of more than one course 15
7.3 Lapped joints, joggle joints, permanent backing strips 15
8 Welding 15
8.1 General 15
8.2 Welding procedure specification (WPS) 16
8.3 Welding procedure qualification record (WPQR) 16
8.4 Qualification of welders and welding operators 17
8.5 Filler metals and auxiliary materials 18
8.6 Joint preparation 18
8.7 Execution of welded joints 19
8.8 Attachments, supports and stiffeners 19
29 7.98.9 Preheat
30 7.108.10 Permanent joints other than welding
8.19.1 General
31 8.29.2 Reference criteria
34 8.39.3 Extent of testing
36 8.49.4 Performance of tests and acceptance criteria
38 9.110.1 General
9.210.2 Ratio of deformation
43 9.310.3 Forming procedures
46 9.410.4 Heat treatment after forming
49 9.510.5 Sampling of formed test coupons
50 9.610.6 Tests
51 9.710.7 Visual inspection and control of dimension
52 9.810.8 Marking
9.910.9 Documentation
10.111.1 General
53 10.211.2 Heat treatment conditions
57 10.311.3 Method of PWHT
58 10.411.4 PWHT procedure
59 10.511.5 Mechanical properties after heat treatment
60 10.611.6 Dissimilar ferritic joints
10.711.7 Special materials
61 10.811.8 Heat Treatment for reasons other than welding
11.112.1 Repairs of surface defects in the parent metal
11.212.2 Repair of weld defects
68 C.1.1 Introduction
C.1.2 Responsibility
C.1.3 Specification of expansion procedures
69 C.1.4 Technical content of expansion procedure specification (EPS)
70 C.1.5 Expansion procedure qualification test (EPQT)
C.2.1 General
C.2.2 Visual examination
C.2.3 Dimensional verification
71 C.2.4 Testing
C.3.1 General
All of the conditions of validity stated below shall be met independently of each other.
A change outside of the ranges specified shall require a new expansion procedure test.
C.3.2 Manufacturer
C.3.3 Material
72 C.3.4 Tube dimensions
C.3.5 Expansion factor
C.3.6 Joint design
C.3.7 Tool
C.3.8 PWHT
73 C.5.1 General
C.5.2 Validity range of expansion operator qualification
C.5.3 Qualification tests
C.5.4 Examination and testing
74 C.5.5 Period of validity
C.5.6 Certification
80 undefined
88 1 Scope
2 Normative references
90 3 Terms and definitions
4 Requirements for manufacturing and subcontracting
4.1 Manufacturing
91 4.2 Subcontracting
5 Materials
5.1 General
5.2 Material traceability
5.2.1 General
92 5.2.2 Identification system
5.2.3 Visibility
5.2.4 Review of material certification and material identification
93 5.2.5 Transfer of markings
6 Manufacturing tolerances
6.1 Surface geometry of welds
6.2 Middle line alignment
95 6.3 Surface alignment
6.3.1 Surface misalignment between parts
6.3.2 Joining of parts of different thickness
6.4 Tolerances for vessels subjected to internal pressure
6.4.1 External diameter
6.4.2 Out of roundness
96 6.4.3 Deviation from the longitudinal axis
6.4.4 Irregularities in profile
98 6.4.5 Local thinning
99 6.4.6 Dished ends
102 6.5 Tolerances for vessels subjected to external pressure
6.6 Structural tolerances
7 Weld details
7.1 General
7.2 Vessels or parts made of more than one course
7.3 Lapped joints, joggle joints, permanent backing strips
8 Welding
8.1 General
103 8.2 Welding procedure specification (WPS)
8.3 Welding procedure qualification record (WPQR)
104 8.4 Qualification of welders and welding operators
105 8.5 Filler metals and auxiliary materials
8.6 Joint preparation
106 8.7 Execution of welded joints
8.8 Attachments, supports and stiffeners
8.9 Preheat
107 8.10 Permanent joints other than welding
8.10.1 General
8.10.2 Mechanical roller expansion
8.10.3 Brazing
9 Manufacture and testing of welds — Production test
9.1 General
108 9.2 Reference criteria
112 9.3 Extent of testing
114 9.4 Performance of tests and acceptance criteria
9.4.1 General
9.4.2 Transverse tensile test
9.4.3 Longitudinal weld tensile test
9.4.4 Impact test
9.4.5 Bend test
115 9.4.6 Macro examination
9.4.7 Micro examination
9.4.8 Hardness test
9.4.9 Retests
116 9.4.10 Test report
10 Forming of pressure parts
10.1 General
10.2 Ratio of deformation
10.2.1 Dished circular products
117 10.2.2 Cylinders and cones made by rolling
118 10.2.3 Other product types
119 10.2.4 Tube bends
10.2.5 Forming of Segments
120 10.3 Forming procedures
10.3.1 Cold forming
121 10.3.2 Hot forming
10.3.2.1 General
10.3.2.2 Normalised steels with specified impact values at temperatures above and including –20 (C
122 10.3.2.3 Normalised steels with specified impact values at temperatures below – 20 (C
10.3.2.4 Quenched and tempered steels
10.3.2.5 Austenitic and austenitic-ferritic steels
123 10.3.2.6 Clad steels
10.4 Heat treatment after forming
10.4.1 General
10.4.2 Heat treatment of flat products after cold forming
125 10.4.3 Heat treatment of tubular products after cold forming
10.4.4 Heat treatment of clad steels after cold forming
10.4.5 Heat treatment after hot forming
126 10.4.6 Heat treatment of clad steels after hot forming
10.5 Sampling of formed test coupons
10.5.1 Cold formed products without heat treatment
10.5.2 Hot formed or cold formed products with heat treatment
127 10.6 Tests
10.6.1 Base material
10.6.2 Butt welds
128 10.6.3 Acceptance criteria for formed test coupons
10.6.4 Retests of formed coupons
129 10.7 Visual inspection and control of dimension
10.8 Marking
10.9 Documentation
11 Post weld heat treatment (PWHT)
11.1 General
130 11.2 Heat treatment conditions
133 11.3 Method of PWHT
134 11.4 PWHT procedure
135 11.5 Mechanical properties after heat treatment
137 11.6 Dissimilar ferritic joints
138 11.7 Special materials
11.8 Heat Treatment for reasons other than welding
12 Repairs
12.1 Repairs of surface defects in the parent metal
139 12.2 Repair of weld defects
13 Finishing operations
141 Annex A (informative)Structural tolerances
145 Annex B (informative)Example of a sub-contractors form
146 Annex C (normative)Specification and approval of expansion procedures and operators
C.1 General
C.1.1 Introduction
C.1.2 Responsibility
C.1.3 Specification of expansion procedures
147 C.1.4 Technical content of expansion procedure specification (EPS)
148 C.1.5 Expansion procedure qualification test (EPQT)
C.2 Examination and testing
C.2.1 General
C.2.2 Visual examination
C.2.3 Dimensional verification
149 C.2.4 Testing
C.3 Range of approval
C.3.1 General
C.3.2 Manufacturer
C.3.3 Material
150 C.3.4 Tube dimensions
C.3.5 Expansion factor
C.3.6 Joint design
C.3.7 Tool
C.3.8 PWHT
151 C.4 Expansion Procedure Approval Record (EPAR)
C.5 Expansion operator approval
C.5.1 General
C.5.2 Validity range of expansion operator qualification
C.5.3 Qualification tests
C.5.3.1 General
C.5.3.2 Test piece
C.5.3.3 Assessment of the test piece
152 C.5.4 Examination and testing
C.5.5 Period of validity
C.5.5.1 Initial approval
C.5.5.2 Prolongation
C.5.6 Certification
153 Annex Y (informative)History of EN 13445-4
Y.1 Differences between EN 13445-4:2014 and EN 13445-4:2021
154 Annex ZA (informative)Relationship between this European Standard and the essential requirements of Directive 2014/68/EU aimed to be covered

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BS EN 13445-4:2021 - TC
$280.87