Already a subscriber?
MADCAD.com Free Trial
Sign up for a 3 day free trial to explore the MADCAD.com interface, PLUS access the
2009 International Building Code to see how it all works.
If you like to setup a quick demo, let us know at support@madcad.com
or +1 800.798.9296 and we will be happy to schedule a webinar for you.
Security check
Please login to your personal account to use this feature.
Please login to your authorized staff account to use this feature.
Are you sure you want to empty the cart?
ASME B31.12 Hydrogen Piping and Pipelines , 2008
- FOREWORD
- COMMITTEE PERSONNEL
- Chapter GR- 1 Scope and Definitions [Go to Page]
- GR- 1.1 SCOPE
- GR- 1.2 RESPONSIBILITIES
- GR- 1.3 INTENT OF THE CODE
- GR- 1.4 PACKAGED EQUIPMENT REQUIREMENTS
- GR- 1.5 TERMS AND DEFINITIONS
- GR- 1.6 B31.12 APPENDICES
- GR- 1.7 NOMENCLATURE
- Chapter GR- 2 Materials [Go to Page]
- GR- 2.1 GENERAL REQUIREMENTS
- GR- 2.2 JOINING AND AUXILIARY MATERIALS
- Chapter GR- 3 Welding, Brazing, Heat Treating, Forming, and Testing [Go to Page]
- GR- 3.1 GENERAL
- GR- 3.2 WELDING AND BRAZING
- GR- 3.3 WELDING AND BRAZING MATERIALS
- GR- 3.4 CONSTRUCTION OF WELDMENTS
- GR- 3.5 PREHEATING FOR WELDMENTS
- GR- 3.6 HEAT TREATMENT
- GR- 3.7 SPECIFIC AND ALTERNATIVE HEAT TREAT REQUIREMENTS
- GR- 3.8 CONSTRUCTION OF BRAZEMENTS
- GR- 3.9 FORMING OF PIPE COMPONENTS
- GR- 3.10 TESTING
- Chapter GR- 4 Inspection, Examination, and Testing [Go to Page]
- GR- 4.1 GENERAL
- GR- 4.2 INSPECTION
- GR- 4.3 EXAMINATION
- GR- 4.4 PERSONNEL QUALIFICATION AND CERTIFICATION
- 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
- Chapter GR- 5 Operation and Maintenance [Go to Page]
- GR- 5.1 GENERAL
- GR- 5.2 OPERATION MAINTENANCE PLAN
- GR- 5.3 MAINTENANCE REQUIREMENTS
- GR- 5.4 LEAKAGE SURVEYS
- GR- 5.5 REPAIR PROCEDURES
- GR- 5.6 INJURIOUS DENTS AND MECHANICAL DAMAGE
- 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
- GR- 5.12 TRANSMISSION PIPELINE MAINTENANCE
- 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
- GR- 5.17 TESTING FOR INTEGRITY ASSESSMENT OF IN- SERVICE PIPELINES
- GR- 5.18 DISTRIBUTION PIPELINE MAINTENANCE
- GR- 5.19 LEAKAGE SURVEYS
- GR- 5.20 LEAKAGE INVESTIGATION AND ACTION
- 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
- GR- 5.23 MAINTENANCE OF SPECIFIC FACILITIES
- Chapter GR- 6 Quality System Program for Hydrogen Piping and Pipeline Systems [Go to Page]
- GR- 6.1 QUALITY SYSTEM PROGRAM
- GR- 6.2 QUALITY MANUAL
- Figures [Go to Page]
- Fig. GR-2.1.2(b)A Minimum Temperatures Without Impact Testing for Carbon Steel Materials
- Fig. GR-2.1.2(b)B Reduction in Minimum Design Metal Temperature Without Impact Testing
- 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
- 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
- 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
- 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)
- Fig. GR-3.4.5 Welding End Transition — Maximum Envelope
- 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
- 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
- Figs. GR-3.4.9(a), (b), (c), and (d) Typical Welded Branch Connections
- Fig. GR-3.4.9(e) Acceptable Details for Pipe Branch Attachment Welds
- 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
- Fig. GR-3.8.1 Joints for Tubular Components
- Tables [Go to Page]
- Table GR- 2.1.1( a) Material Specification Index for Piping and Pipe Components
- Table GR- 2.1.1( b) Material Specification Index for Pipelines
- Table GR- 2.1.2( b)( 2) Requirements for Low Temperature Toughness Tests for Metals
- 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]
- Table GR- 2.1.3( a) Impact Testing Requirements for Metals
- Table GR- 2.1.3( d) Charpy Impact Test Temperature Reduction
- Table GR- 2.1.3( e) Minimum Required Charpy V- Notch Impact Values
- Table GR- 3.4.6 Weld Reinforcement
- Table GR- 3.6.1 Requirements for Postweld Heat Treatment of Weldments
- Table GR- 3.5 Preheat Temperatures
- Chapter IP- 1 Scope and Responsibilities [Go to Page]
- IP- 1.1 SCOPE
- IP- 1.2 RESPONSIBILITIES
- IP- 1.3 INTENT
- IP- 1.4 DETERMINING CODE REQUIREMENTS
- Chapter IP- 2 Design Conditions and Criteria [Go to Page]
- IP- 2.1 DESIGN CONDITIONS
- IP- 2.2 DESIGN CRITERIA
- Chapter IP- 3 Pressure Design of Piping Components [Go to Page]
- IP- 3.1 GENERAL
- IP- 3.2 STRAIGHT PIPE
- IP- 3.3 CURVED AND MITERED SEGMENTS OF PIPE
- IP- 3.4 BRANCH CONNECTIONS
- IP- 3.5 CLOSURES
- IP- 3.6 PRESSURE DESIGN OF FLANGES AND BLANKS
- IP- 3.7 REDUCERS
- IP- 3.8 PRESSURE DESIGN OF OTHER COMPONENTS
- Chapter IP- 4 Service Requirements for Piping Components [Go to Page]
- IP- 4.1 VALVES AND SPECIALTY COMPONENTS
- IP- 4.2 OTHER CONSIDERATIONS
- IP- 4.3 BOLTING AND TAPPED HOLES FOR COMPONENTS
- Chapter IP- 5 Service Requirements for Piping Joints [Go to Page]
- IP- 5.1 SCOPE
- IP- 5.2 WELDED JOINTS
- IP- 5.3 FLANGED JOINTS
- IP- 5.4 EXPANDED JOINTS
- IP- 5.5 THREADED JOINTS
- IP- 5.6 CAULKED JOINTS
- IP- 5.7 BRAZED AND SOLDERED JOINTS
- IP- 5.8 SPECIAL JOINTS
- Chapter IP- 6 Flexibility and Support [Go to Page]
- IP- 6.1 FLEXIBILITY OF PIPING
- IP- 6.2 PIPING SUPPORTS
- Chapter IP- 7 Specific Piping Systems [Go to Page]
- IP- 7.1 INSTRUMENT PIPING
- IP- 7.2 PRESSURE- RELIEVING SYSTEMS
- Chapter IP- 8 Dimensions and Ratings of Components [Go to Page]
- IP- 8.1 DIMENSIONAL REQUIREMENTS
- IP- 8.2 RATINGS OF COMPONENTS
- IP- 8.3 REFERENCE DOCUMENTS
- Chapter IP- 9 Fabrication, Erection, and Assembly [Go to Page]
- 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
- 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
- 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
- IP- 9.20 LEAK TESTING OF PIPING SYSTEMS
- IP- 9.21 RECORDS FOR LEAK TESTING
- Chapter IP- 10 Inspection, Examination, and Testing [Go to Page]
- 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
- IP- 10.6 TESTING
- IP- 10.7 HYDROSTATIC LEAK TEST
- IP- 10.8 PNEUMATIC LEAK TEST
- 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
- Figures [Go to Page]
- Fig. IP-3.3.1 Nomenclature for Pipe Bends
- Fig. IP-3.3.3 Nomenclature for Miter Bends
- Fig. IP-3.4.2 Branch Connection Nomenclature
- Fig. IP-3.4.3 Extruded Outlet Header Nomenclature
- Fig. IP-3.6.3 Blanks
- Fig. IP-6.1.5(d)(1) Moments in Bends
- Fig. IP-6.1.5(d)(2) Moments in Branch Connections
- Fig. IP-9.14(c) Typical Threaded Joints Using Straight Threads
- Tables [Go to Page]
- Table IP- 2.2.8( c)- 1 Increased Casting Quality Factors,
- Table IP- 2.2.8( c)- 2 Acceptance Levels for Castings
- Table IP- 2.2.9 Longitudinal Weld Joint Quality Factor,
- Table IP- 3.2 Values of Coefficient
- Table IP- 3.5 ASME BPV Code Section VIII, Division 1 References for Closures
- Table IP- 8.1 Component Standards
- 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
- Table IP- 10.5( b) Acceptance Criterion/ Value for Table IP- 10.5( a)
- 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
- Chapter PL- 1 Scope and Exclusions [Go to Page]
- PL- 1.1 SCOPE
- PL- 1.2 CONTENT AND COVERAGE
- PL- 1.3 EXCLUSIONS
- Chapter PL- 2 Pipeline Systems Components and Fabrication Details [Go to Page]
- PL- 2.1 PURPOSE
- PL- 2.2 PIPING SYSTEM COMPONENTS
- PL- 2.3 REINFORCEMENT OF FABRICATED BRANCH CONNECTIONS
- PL- 2.4 MULTIPLE OPENINGS AND EXTRUDED OUTLETS
- PL- 2.5 EXPANSION AND FLEXIBILITY
- PL- 2.6 DESIGN FOR LONGITUDINAL STRESS
- PL- 2.7 SUPPORTS AND ANCHORAGE FOR EXPOSED PIPING
- PL- 2.8 ANCHORAGE FOR BURIED PIPING
- Chapter PL- 3 Design, Installation, and Testing [Go to Page]
- PL- 3.1 PROVISIONS FOR DESIGN
- PL- 3.2 BUILDINGS INTENDED FOR HUMAN OCCUPANCY
- PL- 3.3 CONSIDERATIONS NECESSARY FOR CONCENTRATIONS OF PEOPLE IN LOCATION CLASS 1 OR 2
- PL- 3.4 INTENT
- PL- 3.5 RISK ASSESSMENT
- PL- 3.6 LOCATION CLASS AND CHANGES IN NUMBER OF BUILDINGS INTENDED FOR HUMAN OCCUPANCY
- PL- 3.7 STEEL PIPELINE
- 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
- PL- 3.11 COMMISSIONING OF FACILITIES
- PL- 3.12 PIPE- TYPE AND BOTTLE- TYPE HOLDERS
- PL- 3.13 CONTROL AND LIMITING OF HYDROGEN GAS PRESSURE
- PL- 3.14 UPRATING
- PL- 3.15 VALVES
- PL- 3.16 VAULT PROVISIONS FOR DESIGN, CONSTRUCTION, AND INSTALLATION OF PIPELINE COMPONENTS
- PL- 3.17 LOCATION FOR CUSTOMERS' METER AND REGULATOR INSTALLATIONS
- PL- 3.18 HYDROGEN GAS SERVICE LINES
- PL- 3.19 INSPECTION AND EXAMINATION
- 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
- Tables [Go to Page]
- Table PL- 2.5.5 Modulus of Elasticity for Carbon and Low Alloy Steel
- Table PL- 3.6.1 Location Class
- Table PL- 2.3.2 Reinforcement of Fabricated Branch Connections, Special Requirements
- Table PL- 2.5.2 Thermal Expansion of Carbon and Low Alloy Steel
- Table PL- 3.7.1 Nominal Chemical Composition Within a Specification/ Grade
- Table PL- 3.7.1( b)( 6)- 1 Basic Design Factor,
- 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,
- 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,
- Table PL- 3.7.5( a)( 2) Maximum Degree of Bending
- MANDATORY APPENDICES [Go to Page]
- I DESIGN OF ABOVE- GROUND HYDROGEN GAS PIPELINE FACILITIES
- II REFERENCE STANDARDS
- III SAFEGUARDING
- IV NOMENCLATURE
- VI PREPARATION OF TECHNICAL INQUIRIES
- VII GAS LEAKAGE AND CONTROL CRITERIA
- IX ALLOWABLE STRESSES AND QUALITY FACTORS FOR METALLIC PIPING, PIPELINE, AND BOLTING MATERIALS
- NONMANDATORY APPENDICES [Go to Page]
- A PRECAUTIONARY CONSIDERATIONS
- B ALTERNATIVE RULES FOR EVALUATING STRESS RANGE
- C RECOMMENDED PRACTICES FOR PROOF TESTING OF PIPELINES IN PLACE
- D ESTIMATING STRAIN IN DENTS
- E SAMPLE CALCULATIONS FOR BRANCH REINFORCEMENT IN PIPING
- F WELDED BRANCH CONNECTIONS AND EXTRUDED HEADERS IN PIPELINE SYSTEMS [Go to Page]