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ASME B31.12 08:2008 Edition

ASME B31.12 08:2008 Edition

$98.04

ASME B31.12 Hydrogen Piping and Pipelines

Published By Publication Date Number of Pages
ASME 2008 258
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PDF Catalog

PDF Pages PDF Title
10 FOREWORD
11 COMMITTEE PERSONNEL
14 Chapter GR- 1 Scope and Definitions
GR- 1.1 SCOPE
GR- 1.2 RESPONSIBILITIES
Tables
15 GR- 1.3 INTENT OF THE CODE
GR- 1.4 PACKAGED EQUIPMENT REQUIREMENTS
GR- 1.5 TERMS AND DEFINITIONS
24 GR- 1.6 B31.12 APPENDICES
GR- 1.7 NOMENCLATURE
25 Chapter GR- 2 Materials
GR- 2.1 GENERAL REQUIREMENTS
26 Table GR- 2.1.1( a) Material Specification Index for Piping and Pipe Components
29 Table GR- 2.1.1( b) Material Specification Index for Pipelines
31 Table GR- 2.1.2( b)( 2) Requirements for Low Temperature Toughness Tests for Metals
32 Fig. GR-2.1.2(b)A Minimum Temperatures Without Impact Testing for Carbon Steel Materials
33 Table GR- 2.1.2( b) A Tabular Values for Minimum Temperatures Without Impact Testing for Carbon Steel Materials [ See Fig. GR- 2.1.2( b) A for Curves and Applicable Notes]
34 Fig. GR-2.1.2(b)B Reduction in Minimum Design Metal Temperature Without Impact Testing
35 Table GR- 2.1.3( a) Impact Testing Requirements for Metals
36 Table GR- 2.1.3( d) Charpy Impact Test Temperature Reduction
37 Table GR- 2.1.3( e) Minimum Required Charpy V- Notch Impact Values
39 GR- 2.2 JOINING AND AUXILIARY MATERIALS
40 Chapter GR- 3 Welding, Brazing, Heat Treating, Forming, and Testing
GR- 3.1 GENERAL
GR- 3.2 WELDING AND BRAZING
43 GR- 3.3 WELDING AND BRAZING MATERIALS
GR- 3.4 CONSTRUCTION OF WELDMENTS
45 Fig. GR-3.4.3(a) Geometry of Weld Joint Detail Single Vee Groove Butt With Extended Land
Fig. GR-3.4.3(c) Unequal Pipe Component Thicknesses, Thicker Components Bored for Alignment
Fig. GR-3.4.3(d) Geometry of Weld Joint Detail Single Vee Groove Butt, Open Root
46 Fig. GR-3.4.3(e) Unequal Pipe Component Thicknesses, Thicker Components Taper-Bored to Align
Fig. GR-3.4.3(f) Geometry of Weld Joint Detail Single Vee Groove Butt, Continuous Flat Backing Ring
Fig. GR-3.4.3(g) Geometry of Weld Joint Detail Single Vee Groove Butt, Continuous Tapered Backing Ring
47 Fig. GR-3.4.3(h) Geometry of Weld Joint Detail Single Vee Groove Butt, Consumable Insert
Fig. GR-3.4.3(i) Preparation and Alignment of Pipe Branch to Pipe Header Connection
48 Fig. GR-3.4.4(a) Geometry of Weld Deposit Single Vee Groove Butt, Open Root
Fig. GR-3.4.4(b) Geometry of Weld Deposit Root Single Vee Groove Butt With Extended Land (Without Filler Metal)
Fig. GR-3.4.4(c) Geometry of Weld Deposit Square Butt End (Without Filler Metal)
49 Fig. GR-3.4.5 Welding End Transition — Maximum Envelope
50 Table GR- 3.4.6 Weld Reinforcement
51 Fig. GR-3.4.6(a) Geometry of Weld Deposit Single Vee Groove Butt, Open Root With Concavity
Fig. GR-3.4.7(a) Fillet Weld Size
52 Fig. GR-3.4.7(b) Typical Details for Double-Welded Slip-On Flanges
Fig. GR-3.4.7(c) Minimum Welding Dimensions for Socket Welding Components to Pipe Including Fit-Up Detail
53 Figs. GR-3.4.9(a), (b), (c), and (d) Typical Welded Branch Connections
54 Fig. GR-3.4.9(e) Acceptable Details for Pipe Branch Attachment Welds
55 Fig. GR-3.4.9(f) Acceptable Detail for Branch Connection of Pipe Fitting
Fig. GR-3.4.9(g) Acceptable Details for Branch Attachment Suitable for 100% Radiography
56 GR- 3.5 PREHEATING FOR WELDMENTS
GR- 3.6 HEAT TREATMENT
57 Table GR- 3.6.1 Requirements for Postweld Heat Treatment of Weldments
Table GR- 3.5 Preheat Temperatures
59 GR- 3.7 SPECIFIC AND ALTERNATIVE HEAT TREAT REQUIREMENTS
GR- 3.8 CONSTRUCTION OF BRAZEMENTS
60 Fig. GR-3.8.1 Joints for Tubular Components
Figures
61 GR- 3.9 FORMING OF PIPE COMPONENTS
62 GR- 3.10 TESTING
63 Chapter GR- 4 Inspection, Examination, and Testing
GR- 4.1 GENERAL
GR- 4.2 INSPECTION
GR- 4.3 EXAMINATION
64 GR- 4.4 PERSONNEL QUALIFICATION AND CERTIFICATION
65 GR- 4.5 EXTENT OF REQUIRED EXAMINATION AND TESTING
GR- 4.6 ACCEPTANCE CRITERIA
GR- 4.7 SUPPLEMENTARY EXAMINATION
GR- 4.8 EXAMINATIONS TO RESOLVE UNCERTAINTY
GR- 4.9 DEFECTIVE COMPONENTS AND WORKMANSHIP
GR- 4.10 TESTING
GR- 4.11 RECORDS
GR- 4.12 NDE DEFINITIONS
66 Chapter GR- 5 Operation and Maintenance
GR- 5.1 GENERAL
GR- 5.2 OPERATION MAINTENANCE PLAN
68 GR- 5.3 MAINTENANCE REQUIREMENTS
70 GR- 5.4 LEAKAGE SURVEYS
GR- 5.5 REPAIR PROCEDURES
GR- 5.6 INJURIOUS DENTS AND MECHANICAL DAMAGE
72 GR- 5.7 PERMANENT REPAIR OF WELDS WITH DEFECTS
GR- 5.8 PERMANENT FIELD REPAIR OF LEAKS AND NONLEAKING CORRODED AREAS
GR- 5.9 PERMANENT FIELD REPAIR OF HYDROGEN STRESS CRACKING IN HARD SPOTS AND STRESS CORROSION CRACKING
GR- 5.10 TESTING AND EXAMINATION OF REPAIRS
GR- 5.11 VALVE MAINTENANCE
73 GR- 5.12 TRANSMISSION PIPELINE MAINTENANCE
74 GR- 5.13 ABANDONING OF TRANSMISSION FACILITIES
GR- 5.14 DECOMMISSIONING OF TRANSMISSION FACILITIES
GR- 5.15 RECOMMISSIONING OF TRANSMISSION FACILITIES
GR- 5.16 REPOSITIONING A PIPELINE IN SERVICE
75 GR- 5.17 TESTING FOR INTEGRITY ASSESSMENT OF IN- SERVICE PIPELINES
76 GR- 5.18 DISTRIBUTION PIPELINE MAINTENANCE
GR- 5.19 LEAKAGE SURVEYS
GR- 5.20 LEAKAGE INVESTIGATION AND ACTION
77 GR- 5.21 REPAIR, TESTING, AND EXAMINATION OF MAINS OPERATING AT HOOP STRESS LEVELS AT OR ABOVE 30% OF THE SPECIFIED MINIMUM YIELD STRENGTH
GR- 5.22 REQUIREMENTS FOR ABANDONING, DISCONNECTING, AND REINSTATING DISTRIBUTION FACILITIES
78 GR- 5.23 MAINTENANCE OF SPECIFIC FACILITIES
80 Chapter GR- 6 Quality System Program for Hydrogen Piping and Pipeline Systems
GR- 6.1 QUALITY SYSTEM PROGRAM
GR- 6.2 QUALITY MANUAL
83 Chapter IP- 1 Scope and Responsibilities
IP- 1.1 SCOPE
IP- 1.2 RESPONSIBILITIES
IP- 1.3 INTENT
IP- 1.4 DETERMINING CODE REQUIREMENTS
84 Chapter IP- 2 Design Conditions and Criteria
IP- 2.1 DESIGN CONDITIONS
85 IP- 2.2 DESIGN CRITERIA
88 Table IP- 2.2.8( c)- 1 Increased Casting Quality Factors,
Table IP- 2.2.8( c)- 2 Acceptance Levels for Castings
Tables
89 Table IP- 2.2.9 Longitudinal Weld Joint Quality Factor,
92 Chapter IP- 3 Pressure Design of Piping Components
IP- 3.1 GENERAL
IP- 3.2 STRAIGHT PIPE
Table IP- 3.2 Values of Coefficient
93 IP- 3.3 CURVED AND MITERED SEGMENTS OF PIPE
Fig. IP-3.3.1 Nomenclature for Pipe Bends
Fig. IP-3.3.3 Nomenclature for Miter Bends
94 IP- 3.4 BRANCH CONNECTIONS
96 Fig. IP-3.4.2 Branch Connection Nomenclature
98 Fig. IP-3.4.3 Extruded Outlet Header Nomenclature
100 IP- 3.5 CLOSURES
IP- 3.6 PRESSURE DESIGN OF FLANGES AND BLANKS
Table IP- 3.5 ASME BPV Code Section VIII, Division 1 References for Closures
101 IP- 3.7 REDUCERS
IP- 3.8 PRESSURE DESIGN OF OTHER COMPONENTS
102 Fig. IP-3.6.3 Blanks
103 Chapter IP- 4 Service Requirements for Piping Components
IP- 4.1 VALVES AND SPECIALTY COMPONENTS
IP- 4.2 OTHER CONSIDERATIONS
IP- 4.3 BOLTING AND TAPPED HOLES FOR COMPONENTS
104 Chapter IP- 5 Service Requirements for Piping Joints
IP- 5.1 SCOPE
IP- 5.2 WELDED JOINTS
IP- 5.3 FLANGED JOINTS
105 IP- 5.4 EXPANDED JOINTS
IP- 5.5 THREADED JOINTS
106 IP- 5.6 CAULKED JOINTS
IP- 5.7 BRAZED AND SOLDERED JOINTS
107 IP- 5.8 SPECIAL JOINTS
108 Chapter IP- 6 Flexibility and Support
IP- 6.1 FLEXIBILITY OF PIPING
111 Fig. IP-6.1.5(d)(1) Moments in Bends
112 Fig. IP-6.1.5(d)(2) Moments in Branch Connections
113 IP- 6.2 PIPING SUPPORTS
116 Chapter IP- 7 Specific Piping Systems
IP- 7.1 INSTRUMENT PIPING
IP- 7.2 PRESSURE- RELIEVING SYSTEMS
117 Chapter IP- 8 Dimensions and Ratings of Components
IP- 8.1 DIMENSIONAL REQUIREMENTS
IP- 8.2 RATINGS OF COMPONENTS
IP- 8.3 REFERENCE DOCUMENTS
118 Table IP- 8.1 Component Standards
119 Chapter IP- 9 Fabrication, Erection, and Assembly
IP- 9.1 GENERAL
IP- 9.2 RESPONSIBILITY
IP- 9.3 CONTENT AND COVERAGE
IP- 9.4 PACKAGED EQUIPMENT PIPING
IP- 9.5 EXCLUSIONS
IP- 9.6 FABRICATION AND ERECTION
IP- 9.7 CONSTRUCTION OF WELDMENTS
IP- 9.8 PREHEATING FOR WELDMENTS
120 IP- 9.9 HEAT TREATMENT
IP- 9.10 SPECIFIC AND ALTERNATIVE HEAT TREATMENT REQUIREMENTS
IP- 9.11 CONSTRUCTION OF BRAZEMENTS
IP- 9.12 BENDING AND FORMING OF PIPE AND TUBE
IP- 9.13 ASSEMBLY AND ERECTION
121 IP- 9.14 THREADED JOINTS
IP- 9.15 TUBING JOINTS
IP- 9.16 EXPANDED JOINTS AND SPECIAL JOINTS
IP- 9.17 PIPE ATTACHMENTS AND SUPPORTS
IP- 9.18 CLEANING OF PIPING
IP- 9.19 INSPECTION, EXAMINATION, AND TESTING
122 IP- 9.20 LEAK TESTING OF PIPING SYSTEMS
IP- 9.21 RECORDS FOR LEAK TESTING
Fig. IP-9.14(c) Typical Threaded Joints Using Straight Threads
123 Chapter IP- 10 Inspection, Examination, and Testing
IP- 10.1 SCOPE
IP- 10.2 RESPONSIBILITY
IP- 10.3 INSPECTIONS BY OWNER
IP- 10.4 EXAMINATIONS BY THE CONSTRUCTION ORGANIZATION
IP- 10.5 EXAMINATION REQUIREMENTS
124 Table IP- 10.5( a) Required Nondestructive Examination for High, Medium, and Low Pressure Pipe Design and Acceptance Criteria for Weldments and Evaluation of Weld Imperfections
125 Tables
126 Table IP- 10.5( b) Acceptance Criterion/ Value for Table IP- 10.5( a)
129 Table IP- 10.5.6 Required Ultrasonic or Eddy Current Examination of Pipe and Tubing for Longitudinal Defects
Table IP- 10.5.7 Hardness Testing After PWHT
130 IP- 10.6 TESTING
131 IP- 10.7 HYDROSTATIC LEAK TEST
IP- 10.8 PNEUMATIC LEAK TEST
132 IP- 10.9 HYDROSTATIC– PNEUMATIC LEAK TEST
IP- 10.10 SENSITIVE LEAK TEST
IP- 10.11 ALTERNATIVE LEAK TEST
IP- 10.12 MECHANICAL AND METALLURGICAL TESTING
IP- 10.13 RECORDS OF TESTING
133 Chapter PL- 1 Scope and Exclusions
PL- 1.1 SCOPE
PL- 1.2 CONTENT AND COVERAGE
PL- 1.3 EXCLUSIONS
134 Chapter PL- 2 Pipeline Systems Components and Fabrication Details
PL- 2.1 PURPOSE
PL- 2.2 PIPING SYSTEM COMPONENTS
136 PL- 2.3 REINFORCEMENT OF FABRICATED BRANCH CONNECTIONS
137 PL- 2.4 MULTIPLE OPENINGS AND EXTRUDED OUTLETS
138 PL- 2.5 EXPANSION AND FLEXIBILITY
Table PL- 2.3.2 Reinforcement of Fabricated Branch Connections, Special Requirements
139 PL- 2.6 DESIGN FOR LONGITUDINAL STRESS
Table PL- 2.5.5 Modulus of Elasticity for Carbon and Low Alloy Steel
Table PL- 2.5.2 Thermal Expansion of Carbon and Low Alloy Steel
141 PL- 2.7 SUPPORTS AND ANCHORAGE FOR EXPOSED PIPING
142 PL- 2.8 ANCHORAGE FOR BURIED PIPING
143 Chapter PL- 3 Design, Installation, and Testing
PL- 3.1 PROVISIONS FOR DESIGN
PL- 3.2 BUILDINGS INTENDED FOR HUMAN OCCUPANCY
144 PL- 3.3 CONSIDERATIONS NECESSARY FOR CONCENTRATIONS OF PEOPLE IN LOCATION CLASS 1 OR 2
PL- 3.4 INTENT
PL- 3.5 RISK ASSESSMENT
145 PL- 3.6 LOCATION CLASS AND CHANGES IN NUMBER OF BUILDINGS INTENDED FOR HUMAN OCCUPANCY
Table PL- 3.6.1 Location Class
147 PL- 3.7 STEEL PIPELINE
149 Table PL- 3.7.1 Nominal Chemical Composition Within a Specification/ Grade
Table PL- 3.7.1( b)( 6)- 1 Basic Design Factor,
150 Table PL- 3.7.1( b)( 6)- 2 Design Factors for Steel Pipe Construction ( Used With Option A)
Table PL- 3.7.1( b)( 6)- 3 Basic Design Factor,
151 Table PL- 3.7.1( b)( 6)- 4 Design Factors for Steel Pipe Construction ( Used With Option B)
Table PL- 3.7.1( b)( 8) Temperature Derating Factor,
152 Table PL- 3.7.5( a)( 2) Maximum Degree of Bending
154 PL- 3.8 HOT TAPS
PL- 3.9 PRECAUTIONS TO PREVENT COMBUSTION OF HYDROGEN– AIR MIXTURES DURING CONSTRUCTION OPERATIONS
PL- 3.10 TESTING AFTER CONSTRUCTION
155 PL- 3.11 COMMISSIONING OF FACILITIES
156 PL- 3.12 PIPE- TYPE AND BOTTLE- TYPE HOLDERS
PL- 3.13 CONTROL AND LIMITING OF HYDROGEN GAS PRESSURE
159 PL- 3.14 UPRATING
160 PL- 3.15 VALVES
PL- 3.16 VAULT PROVISIONS FOR DESIGN, CONSTRUCTION, AND INSTALLATION OF PIPELINE COMPONENTS
161 PL- 3.17 LOCATION FOR CUSTOMERS’ METER AND REGULATOR INSTALLATIONS
PL- 3.18 HYDROGEN GAS SERVICE LINES
162 PL- 3.19 INSPECTION AND EXAMINATION
165 PL- 3.20 REPAIR OR REMOVAL OF DEFECTIVE WELDS IN PIPING INTENDED TO OPERATE AT HOOP STRESS LEVELS OF 20% OR MORE OF THE SPECIFIED MINIMUM YIELD STRENGTH
PL- 3.21 STEEL PIPELINE SERVICE CONVERSIONS
168 MANDATORY APPENDICES
I DESIGN OF ABOVE- GROUND HYDROGEN GAS PIPELINE FACILITIES
172 II REFERENCE STANDARDS
176 III SAFEGUARDING
178 IV NOMENCLATURE
183 VI PREPARATION OF TECHNICAL INQUIRIES
185 VII GAS LEAKAGE AND CONTROL CRITERIA
192 IX ALLOWABLE STRESSES AND QUALITY FACTORS FOR METALLIC PIPING, PIPELINE, AND BOLTING MATERIALS
229 Figures
NONMANDATORY APPENDICES
A PRECAUTIONARY CONSIDERATIONS
239 B ALTERNATIVE RULES FOR EVALUATING STRESS RANGE
241 C RECOMMENDED PRACTICES FOR PROOF TESTING OF PIPELINES IN PLACE
244 D ESTIMATING STRAIN IN DENTS
245 E SAMPLE CALCULATIONS FOR BRANCH REINFORCEMENT IN PIPING
249 F WELDED BRANCH CONNECTIONS AND EXTRUDED HEADERS IN PIPELINE SYSTEMS

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