BS 4515:1984

Foreword
Committees responsible
Specification
Section one. General
1 Scope
2 Definitions
3 Information, items to be approved and requirements
    to be agreed and to be documented
4 Equipment
5 Materials
6 Electrodes and filler materials
7 Shielding gases
Section two. Approval and testing of welding procedures
8 General
9 Records
10 Welding procedure
11 Changes affecting approval (essential variables)
12 Welding of test joint
13 Testing of butt joints for procedure approval
14 Testing of fillet welds for procedure approval
Section three. Approval and testing of welders
15 Single approval for manual welding
16 Multiple approval for manual welding
17 Visual examination
18 Non-destructive testing
19 Destructive testing
20 Retests
21 Records
22 Mechanized welding
Section four. Production welding
23 Proximity of welds
24 Pipe end preparation
25 Fusion faces
26 Alignment
27 Tack welds
28 Line-up clamps and pipe supports
29 Working clearance
30 Stray arcs
31 Weather conditions
32 Preheating and post-weld heat treatment
33 Branches
34 Inter-run cleaning
35 Partially completed joints
Section five. Inspection and testing
36 Inspection and testing
37 Radiographic examination
38 Ultrasonic examination
39 Automatic ultrasonic examination
40 Magnetic particle flaw detection
Section six. Acceptance and rectification of welds
41 Non-destructive testing acceptance criteria
42 Rectification of welds
Appendices
A Example of record form for welding procedure
    approval test
B Example of record form for welder approval test
C Guidance for establishing preheating requirements
D Guidance on post-weld heat treatment
E Example of record form for radiographic examination
F Example of record form for ultrasonic examination
G Example of record form for magnetic particle flaw
    detection
H Acceptance criteria for girth welds based on a
    simplified engineering critical assessment
J Recommendations for hyperbaric welding
Tables
1 Limits of offshore pipelines
2 Materials
3 Welding procedure details
4 Changes affecting approval (essential variables)
5 Test specimens for procedure approval tests on butt
    joints
6 Hardness values
7 Impact specimen sizes, test temperatures and values
    of factor F
8 Test specimens for procedure approval tests on
    fillet welds
9 Acceptance criteria for welds
10 Cut-off values of stress range
11 Allowable length of defect for girth welds
Figures
1 Location of test specimens
2 Tensile test specimen
3 Recommended locations for hardness impressions
4 Charpy impact test specimen positions
5 Preparation of fillet weld specimens
6 Nomogram for preheating requirements
7 Derivation of the maximum allowable block loading
    stress range Smax
8 Required minimum level of CTOD for pipelines with
    diameters between 200 mm and 299 mm
9 Required minimum level of CTOD for pipelines with
    diameters between 300 mm and 399 mm
10 Required minimum level of CTOD for pipelines with
    diameters between 400 mm and 499 mm
11 Required minimum level of CTOD for pipelines with
    diameters between 500 mm and 599 mm
12 Required minimum level of CTOD for pipelines with
    diameters between 600 mm and 699 mm
13 Required minimum level of CTOD for pipelines with
    diameters between 700 mm and 799 mm
14 Required minimum level of CTOD for pipelines with
    diameters between 800 mm and 899 mm
15 Required minimum level of CTOD for pipelines with
    diameters between 900 mm and 999 mm
16 Derivation of required minimum level of CTOD
17 Range of positions for the notch in group 2
    specimens
18 Notch position for subsidiary geometry specimens
    (group 3)
19 Specimen notch positions for group 4 tests
20 Positioning of Charpy specimen V-notch for procedure
    approval of partial penetration repair welds
21 Position of CTOD specimen notch for assessing repair
    welds
22 Position of CTOD specimen notch for assessing
    original weld

Manual, semi-automatic and mechanized arc welding of butt joints, branches, fillet welds and socket joints in carbon, carbon manganese and low alloy steel pipelines. Approval and testing of welding procedures and welders, production welding, inspection and testing, acceptance and rectification. Appendices give additional guidance, including on hyperbaric welding.