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AS/NZS 2566.2:2002

[Current]

Buried flexible pipelines, Part 2: Installation

Specifies requirements for the installation of buried flexible pipelines with structural design in accordance with AS/NZS 2566.1.
Published: 12/08/2002
Pages: 82
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Table of contents
Cited references
Content history
Table of contents
Header
About this publication
Preface
1 Scope and general
1.1 Scope
1.2 Referenced documents
1.3 Application
1.3.1 Applicable installations
1.3.2 Other installations
1.4 Definitions
1.5 Notation
1.6 Work method statement
1.7 Asset protection
2 Transportation, handling and storage
2.1 Scope
2.2 Transportation
2.3 Handling
2.3.1 General
2.3.2 Unloading
2.4 On-site storage
3 Pipeline components acceptance criteria
3.1 Scope
3.2 Acceptance criteria
3.3 Acceptance after rectification
4 Excavation
4.1 Scope
4.2 Prior to comencement
4.3 Excavation method
4.3.1 General
4.3.2 Suitability of natural trench wall and foundation material
4.3.3 Minimum cover
4.3.4 Road surface cutting
4.3.5 Dewatering
4.3.6 Use of explosives
4.4 Embedment zone geometry
4.4.1 Trench width at embedment zone level
4.4.2 Trench width above embedment zone
4.4.3 Embedment zone dimensions for embankments
4.4.4 Gradient and depth
4.4.5 Over-excavation of foundation
4.4.6 Variation from specified trench or embedment zone width
4.4.7 Pockets for pipeline projections
4.4.8 Clearances for on-site works
4.4.9 Excavation for structures for pipeline restraint and component support
5 Installation
5.1 Scope
5.2 Laying
5.2.1 Inspection immediately prior to laying
5.2.2 Handling and storage
5.2.3 Positioning the pipeline
5.2.4 Joint deflections in a pipeline
5.2.5 Bending the pipeline
5.2.6 Adjacent parallel pipelines
5.2.7 Horizontal or vertical separation of crossing pipelines
5.2.8 Storage in direct sunlight or hot weather
5.2.9 Provision for expansion and contraction
5.2.9.1 Thermal effects
5.2.9.2 Potential shortening of the pipeline due to pressurization (Poisson’s ratio effect)
5.2.10 Temporary internal struts
5.2.11 Pipe laying tolerances
5.2.12 Jointing methods
5.2.13 Removal of pegs and packing
5.3 Foundation
5.4 Embedment zone
5.4.1 Migration of fines
5.4.2 Materials
5.4.2.1 Material types
5.4.2.2 Material composition
5.4.2.3 Free-draining material
5.4.3 Trench drainage during construction
5.4.4 Placement and compaction
5.4.4.1 Bedding material
5.4.4.2 Side support and overlay
5.4.5 Interface with the native soil
5.4.6 Trench Support Systems
5.5 Fill zone
5.5.1 Material requirements
5.5.2 Protection of pipeline
5.5.3 Prevention of flotation
5.6 Compaction
5.6.1 General
5.6.2 Compaction trials
5.6.3 Compaction control
5.6.3.1 General
5.6.3.2 Direct methods
5.6.3.3 Indirect methods
5.6.4 Frequency of field relative compaction testing
5.7 Deflection criteria
5.8 Alternative embedment material for pipe restraint
5.8.1 General
5.8.2 Bulkheads and trenchstops
5.8.3 Concrete encasement and structures
5.8.4 Anchor and thrust blocks
6 Field testing
6.1 Scope
6.2 Purpose
6.3 Pressure pipelines—Hydrostatic pressure testing
6.3.1 General
6.3.2 Selection of test pressure
6.3.3 Selecting test lengths
6.3.4 Pressure test methods
6.3.4.1 Constant pressure (water loss) method
6.3.4.2 Constant pressure (water loss) method for visco-elastic pressure pipelines
6.3.4.3 Pressure decay method for visco-elastic pipelines
6.3.4.4 Pressure rebound method for visco-elastic pressure pipelines
6.3.4.5 Visual test method for minor pipelines
6.3.4.6 Other test methods
6.4 Non-pressure pipelines—Leakage testing
6.4.1 General
6.4.2 Low pressure air test
6.4.3 Vacuum test
6.4.4 Hydrostatic test
6.4.5 Infiltration test
6.5 Deflection testing
6.5.1 General
6.5.2 Pipelines <750 mm diameter
6.5.3 Pipelines ≥750 mm diameter
7 Commissioning
7.1 General
7.2 Cleaning water supply pipelines
7.3 Disinfection of drinking water supply pipelines
7.3.1 Cleaning
7.3.2 Disinfection
Appendix A
Appendix B
Appendix C
C1 Scope
C2 Installation process
Appendix D
D1 Scope
D2 Work method statement (WMS)
D3 Other activities
D4 Inspection and test plans
Appendix E
E1 Scope
E2 Requirements for protection of services, structures, pavements and vegetation
Appendix F
F1 Scope
F2 Application
F3 Elastomeric seal joints
F4 Solvent cement joints
F5 Fusion joints
F5.1 Methods
F5.2 Butt fusion
F5.3 Socket fusion
F5.4 Saddle fusion
F5.5 Electrofusion
F5.6 Extrusion welding
F6 Mechanical joints
F6.1 General
F6.2 Flanged joints
F6.3 Compression couplings
F7 Welded steel joints
F8 Repair joints
Appendix G
G1 Scope
G2 Typical embedment material gradings
Appendix H
H1 Compaction methods
Appendix I
I1 Scope
I2 Field experience
I3 Migration control
Appendix J
J1 Scope
J2 Geotextile filter fabric
Appendix K
K1 General
K2 Mix proportions for cemetitious and granular material
K3 Mix flowability
K4 Grading of granular material for use in CLSM
K5 Handling and placement
Appendix L
L1 General
L2 Mix proportions
L3 Mixing and placement
L4 Testing
Appendix M
M1 Scope
M2 Pre-test procedures
M3 Post-test procedures
M4 Constant pressure test (water loss method)
M4.1 Application
M4.2 Procedure
M4.3 Report
M5 Constant pressure test (water loss method) for visco-elastic pressure pipelines
M5.1 Application
M5.2 Procedure
M5.3 Report
M6 Pressure decay test for visco-elastic pipelines
M6.1 Application
M6.2 Pressurizing the pipeline
M6.3 Early prediction of problems
M6.4 Three-point analysis procedure
M6.5 Troubleshooting and retesting
M6.6 Report
M7 Pressure rebound method for visco-elastic pressure pipelines
M7.1 Application
M7.2 Pressure measurement rig
M7.3 Procedure
M7.4 Preliminary phase
M7.5 Air volume assessment
M7.6 Main test phase
M7.7 Report
M8 Visual test for small pipelines
M8.1 Application
M8.2 Procedure
M8.3 Report
Appendix N
N1 Scope
N2 Low pressure air test
N2.1 Procedure
N2.2 Report
N3 Vacuum test
N3.1 Procedure
N3.2 Report
N4 Hydrostatic test
N4.1 Procedure
N4.2 Report
N5 Infiltration test
N5.1 Procedure
N5.2 Report
Appendix O
O1 Scope
O2 Pipelines <750 mm diameter
O2.1 Procedure
O2.2 Report
O3 Pipelines ≥750 mm diameter
O3.1 Procedure
O3.2 Report
Amendment control sheet
AS/NZS 2566.2:2002
Amendment No. 1 (2013)
Revised text
Amendment No. 2 (2018)
Revised text
Amendment No. 3 (2018)
Correction
Cited references in this standard
Content history
DR 01036
AS/NZS 2566.2:2002 Rec:2016