1 - AS 1697-1981 GAS TRANSMISSION AND DISTRIBUTION SYSTEMS KNOWN AS THE GAS PIPELINE CODE
4 - PREFACE
5 - CONTENTS
7 - SECTION 1. SCOPE AND GENERAL REQUIREMENTS
7 - 1.1 SCOPE.
7 - 1.2 SAFETY.
7 - 1.3 CLASSIFICATION OF GAS TRANSMISSION AND DISTRIBUTION SYSTEMS.
9 - 1.4 NOTATION AND DEFINITIONS.
12 - 1.5 STANDARDS AND SPECIFICATIONS.
12 - 1.6 INTERPRETATION.
13 - SECTION 2. MATERIALS AND COMPONENTS
13 - 2.1 GENERAL.
13 - 2.2 QUALIFICATION CATEGORIES OF MATERIALS AND COMPONENTS
13 - 2.3 QUALIFYINGPROCEDURES- GENERAL.
13 - 2.4 QUALIFYING PROCEDURES FOR IDENTIFIED USED STEEL PIPE COMPLYING WITH A SPECIFICATION COVERED BY THIS STANDARD
13 - 2.5 QUALIFYING PROCEDURES FOR NEW OR USED STEEL PIPE NOT COMPLYING WITH A SPECIFICATION COVERED BY THIS STANDARD.
15 - 2.6 PIPE SPECIFICATIONS.
15 - 2.7 FRACTURE TOUGHNESS.
17 - 2.8 ACCESSORIES AND FITTINGS.
18 - 2.9 EXTERNAL PROTECTIVE COATING.
18 - 2.10 INTERNAL PROTECTIVE LINING.
18 - 2.11 CAST AND DUCTILE (NODULAR OR SPHEROIDAL GRAPHITE) IRON
18 - 2.12 COPPER AND COPPER ALLOY.
18 - 2.13 PLASTICS.
18 - 2.14 JOINTING MATERIALS.
18 - 2.15 MATERIALS FOR INSULATING JOINTS.
19 - 2.16 RESTRICTIONS ON USE OF MATERIALS AND COMPONENTS
19 - 2.17 GALVANIC ANODES.
20 - SECTION 3. DESIGN
20 - 3.1 DESIGN OF STEEL PIPELINES AND MAINS.
29 - 3.2 CONTROL AND LIMITING OF GAS PRESSURE.
31 - 3.3 PITS, VAULTS AND KIOSKS.
32 - 3.4 EXTERNAL AND INTERNAL CORROSION- DIVISION 2 SYSTEMS
34 - 3.5 INSTRUMENT, CONTROL AND SAMPLING PIPING.
34 - 3.6 VALVES.
35 - 3.7 COMPRESSOR STATIONS.
37 - SECTION 4. FABRICATION DETAILS
37 - 4.1 GENERAL.
37 - 4.2 FITTINGS AND COMPONENTS OTHER THAN STANDARD.
37 - 4.3 REINFORCEMENT OF WELDED BRANCH CONNECTIONS
39 - 4.4 REINFORCEMENT OF MULTIPLE OPENINGS.
39 - 4.5 EXTRUDED OUTLETS.
40 - 4.6 EXPANSION AND FLEXIBILITY.
40 - 4.7 COMBINED STRESS CALCULATIONS.
41 - 4.8 SUPPORTS AND ANCHORAGE FOR EXPOSED PIPING.
41 - 4.9 ANCHORAGE FOR BURIED PIPE.
42 - SECTION 5. WELDING
42 - 5.1 GENERAL.
42 - 5.2 SAFETY IN WELDING.
42 - 5.3 WELDING EQUIPMENT.
42 - 5.4 ELECTRODES, FLUXES, FILLER RODS AND GAS MIXTURES.
43 - 5.5 PROHIBITION OF WELDING.
43 - 5.6 DEFINITIONS AND TERMS.
43 - 5.7 GENERAL PROVISIONS FOR WELDING.
46 - 5.8 PREHEATING.
50 - 5.9 POSTWELD HEAT TREATMENT.
50 - 5.10 SOUR GAS OPERATION.
50 - 5.11 QUALIFICATION OF WELDING PROCEDURE.
53 - 5.12 QUALIFICATION TESTING OF WELDED JOINTS.
58 - 5.13 WELDER QUALIFICATION.
63 - 5.14 INSPECTION AND TESTING OF PRODUCTION WELDS.
63 - 5.15 NON-DESTRUCTIVE TESTING METHODS.
64 - 5.16 STANDARDS OF ACCEPTABILITY FOR NON- DESTRUCTIVE TESTING.
68 - 5.17 RECTIFICATION OF WELDS.
69 - 5.18 WELDING OR CUTTING ON STEEL PIPELINES CONTAINING GAS.
70 - 5.19 ATTACHMENT OF ELECTRICAL CONNECTIONS.
73 - SECTION 6. CONSTRUCTION AND INSTALLATION
73 - 6.1 GENERAL.
73 - 6.2 INSTALLATION OF PIPELINES, MAINS AND SERVICES.
75 - 6.3 SAFE WORKING WITH GAS.
77 - SECTION 7. INSPECTION AND TESTING
77 - 7.1 EXTENT OF INSPECTION AND TESTING.
77 - 7.2 INSPECTION AND INSPECTORS.
77 - 7.3 TESTING AFTER CONSTRUCTION.
77 - 7.4 INSPECTION AND TESTING OF DIVISION 1 SYSTEMS.
79 - 7.5 INSPECTION AND TESTING OF DIVISION 2 SYSTEMS.
80 - 7.6 RECORDS.
80 - 7.7 PRESSURE LIMITING AND PRESSURE-RELIEF DEVICES.
81 - SECTION 8. OPERATION AND MAINTENANCE
81 - 8.1 GENERAL
81 - 8.2 MAINTENANCE OF PRESSURE-LIMITING AND PRESSURE-REGULATING STATIONS.
81 - 8.3 PIT AND VAULT MAINTENANCE.
81 - 8.4 PREVENTION OF ACCIDENTAL IGNITION.
81 - 8.5 VALVE MAINTENANCE
81 - 8.6 ABANDONING OF DISTRIBUTION OR TRANSMISSION FACILITY
82 - 8.7 OPERATION AND MAINTENANCE - DIVISION 1 SYSTEMS.
84 - 8.8 OPERATION AND MAINTENANCE- DIVISION 2 SYSTEMS.
85 - 8.9 CORROSION-DIVISION 1 SYSTEMS.
86 - SECTION 9. ODORIZING
86 - 9.1 REQUIREMENT.
86 - 9.2 SAMPLES AND RECORDS.
87 - SECTION 10. LIQUEFIED PETROLEUM GAS (LP GAS) SYSTEMS
87 - 10.1 DEFINITION.
87 - 10.2 APPLICATION OF STANDARD.
87 - 10.3 REQUIREMENTS SPECIFIC TO LP GAS.
88 - SECTION 11. CHANGES IN MAXIMUM OPERATING PRESSURE OF EXISTING SYSTEMS
88 - 11.1 GENERAL
88 - 11.2 INCREASING THE MAXIMUM OPERATING PRESSURE.
90 - SECTION 12. CORROSION MITIGATION -DIVISION 1 SYSTEMS
90 - 12.1 GENERAL.
90 - 12.2 QUALIFICATION OF PERSONNEL.
90 - 12.3 RATE OF CORROSION.
91 - 12.4 CORROSION MITIGATION METHODS.
91 - 12.5 INTERNAL CORROSION MITIGATION.
91 - 12.6 EXTERNAL CORROSION MITIGATION.
93 - 12.7 INSTALLATION OF GALVANIC ANODES.
93 - 12.8 TIMING OF APPLICATION OF CORROSION MITIGATION.
93 - 12.9 INSPECTION FOR THE DETECTION OF CORROSION.
94 - 12.10 CORROSION DEFECTS.
94 - 12.11 RECORDS.
95 - APPENDIX A - NOMINATED STANDARDS AND SPECIFICATIONS (Clause 1.5.2)
98 - APPENDIX B - REFERENCE STANDARDS (Clause 1.5.4)
99 - APPENDIX C - FIGURES RELATING TO WELD REINFORCEMENT (Section 4)
106 - APPENDIX D - FLEXIBILITY AND STRESS INTENSIFICATION FACTORS (Clause 4.6.3)
108 - APPENDIX E - MARKERS
110 - APPENDIX G - PLASTICS PIPE INSERTION METHODS-MAINS AND SERVICES
110 - G1 MAINS.
110 - G2 SERVICES.
111 - APPENDIX H - IDENTIFICATION AND ADDRESSES OF STANDARDS-ISSUING AND OTHER BODIES REFERRED TO IN THE CODE
112 - APPENDIX J - RECOMMENDED WELDING SEQUENCE FOR HOT TAP FITTINGS
113 - APPENDIX K - FRACTURE TOUGHNESS FOR STEEL TRANSMISSION PIPELINES AND MAINS
113 - K1 GENERAL.
113 - K2 FACTORS AFFECTING BRITTLE AND DUCTILE FRACTURE.
113 - K3 TEMPERATURE.
114 - K4 BRITTLE FRACTURE.
114 - K5 DUCTILE FRACTURE.
115 - APPENDIX L - ASSESSMENT OF CORRODED DIVISION 1 PIPELINES
115 - L1 SCOPE.
115 - L2 ASSESSMENT BY PRESSURE TESTING.
115 - L3 ASSESSMENT BY CALCULATION.
115 - L4 HOOP STRESS ANALYSIS.
116 - L5 EXAMPLE.
123 - INDEX
127 - ANNEX
128 - RECORD OF AMENDMENTS