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ASME PVHO-1 Safety Standard for Pressure Vessels for Human Occupancy, 2012
- CONTENTS
- FOREWORD
- COMMITTEE ROSTER
- CORRESPONDENCE WITH THE PVHO COMMITTEE
- ASME PVHO- 1– 2012 SUMMARY OF CHANGES
- Section 1 General Requirements [Go to Page]
- 1- 1 INTRODUCTION
- 1- 2 SCOPE
- 1- 3 EXCLUSIONS
- 1- 4 USER REQUIREMENTS
- 1- 5 MANUFACTURER'S DATA REPORT
- 1- 6 MATERIALS
- 1- 7 DESIGN AND FABRICATION REQUIREMENTS
- 1- 8 PRESSURE RELIEF DEVICES
- 1- 9 MARKING
- 1- 10 NONMETALLIC MATERIALS AND TOXICITY OFFGAS TESTING
- 1- 11 RISK ANALYSIS
- Section 2 Viewports [Go to Page]
- 2- 1 GENERAL
- 2- 2 DESIGN
- 2- 3 MATERIAL
- 2- 4 FABRICATION
- 2- 5 INSPECTION
- 2- 6 MARKING
- 2- 7 PRESSURE TESTING
- 2- 8 INSTALLATION OF WINDOWS IN CHAMBERS
- 2- 9 REPAIR OF DAMAGED WINDOWS PRIOR TO BEING PLACED IN SERVICE
- 2- 10 GUIDELINES FOR APPLICATION OF THE REQUIREMENTS OF SECTION 2
- Section 3 Quality Assurance for PVHO Manufacturers [Go to Page]
- 3- 1 GENERAL [Go to Page]
- 3- 2 RESPONSIBILITIES
- Section 4 Piping Systems [Go to Page]
- 4- 1 GENERAL
- 4- 2 MATERIAL REQUIREMENTS
- 4- 3 DESIGN OF COMPONENTS
- 4- 4 SELECTION AND LIMITATIONS OF PIPING COMPONENTS
- 4- 5 SELECTION AND LIMITATIONS OF PIPING JOINTS
- 4- 6 SUPPORTS
- 4- 7 INSPECTION
- 4- 8 TESTING
- 4- 9 SYSTEMS
- Section 5 Medical Hyperbaric Systems [Go to Page]
- 5- 1 GENERAL
- 5- 2 PVHO SYSTEM DESIGN
- 5- 3 GAS SYSTEMS
- 5- 4 CONTROL SYSTEMS AND INSTRUMENTATION
- 5- 5 ENVIRONMENTAL SYSTEMS
- Section 6 Diving Systems [Go to Page]
- 6- 1 GENERAL
- 6- 2 DESIGN
- 6- 3 PRESSURE BOUNDARY
- 6- 4 SYSTEMS
- 6- 5 TESTING
- Section 7 Submersibles [Go to Page]
- 7- 1 GENERAL
- 7- 2 PRESSURE BOUNDARY
- 7- 3 PIPING
- 7- 4 ELECTRICAL SYSTEMS
- 7- 5 LIFE SUPPORT
- 7- 6 FIRE PROTECTION
- 7- 7 NAVIGATION
- 7- 8 COMMUNICATIONS
- 7- 9 INSTRUMENTATION
- 7- 10 BUOYANCY, STABILITY, EMERGENCY ASCENT, AND ENTANGLEMENT
- 7- 11 EMERGENCY EQUIPMENT
- Figures
[Go to Page]
- Fig. 1-7.13.1-1 Geometry of Cylinders
- Fig. 1-7.13.1-2 Stiffener Geometry
- Fig. 1-7.13.1-3 Sections Through Rings
- Fig. 1-7.13.5-1 Values of t/Ro and Lc/Ro
- Fig. 1-9(b)-1 Form of Nameplate, U.S. Customary
- Fig. 1-9(b)-2 Form of Nameplate, Metric
- Fig. 2-2.2.1-1 Standard Window Geometries
- Fig. 2-2.2.1-2 Standard Window Geometries
- Fig. 2-2.2.1-3 Standard Window Geometries
- Fig. 2-2.2.1-4 Standard Window Geometries
- Fig. 2-2.5.1-1 Short-Term Critical Pressure of Flat Disk Acrylic Windows
- Fig. 2-2.5.1-2 Short-Term Critical Pressure of Flat Disk Acrylic Windows
- Fig. 2-2.5.1-3 Short-Term Critical Pressure of Flat Disk Acrylic Windows
- Fig. 2-2.5.1-4 Short-Term Critical Pressure of Conical Frustum Acrylic Windows
- Fig. 2-2.5.1-5 Short-Term Critical Pressure of Conical Frustum Acrylic Windows
- Fig. 2-2.5.1-6 Short-Term Critical Pressure of Spherical Sector Acrylic Windows
- Fig. 2-2.5.1-7 Short-Term Critical Pressure of Spherical Sector Acrylic Windows
- Fig. 2-2.5.1-8 Short-Term Critical Pressure of Cylindrical Acrylic Windows Pressurized Internally
- Fig. 2-2.5.1-9 Short-Term Critical Pressure of Cylindrical Acrylic Windows Pressurized Internally
- Fig. 2-2.5.1-10 Short-Term Critical Pressure of Cylindrical Acrylic Windows Pressurized Externally
- Fig. 2-2.5.1-11 Short-Term Elastic Buckling of Cylindrical Acrylic
- Fig. 2-2.5.1-12 Short-Term Elastic Buckling of Cylindrical Acrylic Windows Between Supports Under ExternalHydrostatic Pressure
- Fig. 2-2.5.1-13 Short-Term Elastic Buckling of Cylindrical Acrylic Windows Between Supports Under External Hydrostatic Pressure
- Fig. 2-2.5.1-14 Short-Term Critical Pressure of Hyperhemispherical and NEMO Type Acrylic Windows
- Fig. 2-2.5.1-15 Short-Term Critical Pressure of Hyperhemispherical and NEMO Type Acrylic Windows
- Fig. 2-2.10.1-1 Seat Cavity Requirements — Conical Frustum Window, Spherical Sector Window With Conical Edge, and Flat Disk Window
- Fig. 2-2.10.1-2 Seat Cavity Requirements — Double Beveled Disk Window
- Fig. 2-2.10.1-3 Seat Cavity Requirements — Spherical Sector Window With Square Edge
- Fig. 2-2.10.1-4 Seat Cavity Requirements — Hemispherical Window With Equatorial Flange
- Fig. 2-2.10.1-5 Seat Cavity Requirements — Cylindrical Window
- Fig. 2-2.10.1-6 Seat Cavity Requirements — Hyperhemispherical Window
- Fig. 2-2.10.1-7 Seat Cavity Requirements — NEMO Window (Standard Seat)
- Fig. 2-2.10.1-8 Seat Cavity Requirements — NEMO Window (Seat With Extended Cyclic Fatigue Life)
- Fig. 2-2.11.10-1 Bevels on Window Edges — Flat Disk Windows, Conical Frustum Windows, Spherical Sector Windows, Hyperhemispheres
- Fig. 2-2.11.10-2 Bevels on Window Edges — Flanged Hemispherical Window, Spherical Sector Window With Square Edge, External Pressure and Internal Pressure of Cylindrical Windows
- Fig. 2-2.14.11-1 Dimensional Tolerances for Penetrations in Acrylic Windows
- Fig. 2-2.14.15-1 Dimensional Tolerances for Inserts in Acrylic Windows
- Fig. 2-2.14.16-1 Typical Shapes of Inserts
- Fig. 2-2.14.22-1 Seal Configurations for Inserts in Acrylic Windows
- Fig. 2-2.14.24-1 Restraints for Inserts in Acrylic Windows
- Fig. 4-9.14.2-1 Flow Diagram of Apparatus for Measuring the Concentration of Hydrocarbons in a Stream of Air or Other Gas After It Has Passed Through a Test Hose
- Tables
[Go to Page]
- Table 1-10-1 Conversion Factor, Fp (For PVHO Occupation Exceeding 8 hr)
- Table 2- 2.3.1- 1 Conversion Factors for Acrylic Flat Disk Windows
- Table 2- 2.3.1- 2 Conversion Factors for Acrylic Conical Frustum Windows and Double Beveled Disk Windows
- Table 2- 2.3.1- 3 Conversion Factors for Acrylic Spherical Sector Windows With Conical Edge, Hyperhemispherical Windows With Conical Edge, and NEMO Type Windows With Conical Edge
- Table 2- 2.3.1- 4 Conversion Factors for Acrylic Spherical Sector Windows With Square Edge and Hemispherical Windows With Equatorial Flange
- Table 2- 2.3.1- 5 Conversion Factors for Acrylic Cylindrical Windows
- Table 2- 2.3.2- 1 Conical Frustum Windows for Design Pressures in Excess of 10,000 psi ( 69 MPa)
- Table 2- 2.14.13- 1 Specified Values of Physical Properties for Polycarbonate Plastic
- Table 2- 2.14.13- 2 Specified Values of Physical Properties for Cast Nylon Plastic
- Table 2- 3.4- 1 Specified Values of Physical Properties for Each Lot
- Table 2- 3.4- 2 Specified Values of Physical Properties for Each Casting
- Table 2- 4.5- 1 Annealing Schedule for Acrylic Windows
- Table 4- 2.1.1- 1 Maximum Allowable Stress Values for Seamless Pipe and Tube Materials Not Listed in Nonmandatory Appendix A of ASME B31.1
- Table 4- 7.1- 1 Mandatory Minimum Nondestructive Examinations for Pressure Welds in Piping Systems for Pressure Vessels for Human Occupancy
- Table 4- 9.14.2- 1 Maximum Allowable Concentration of Hydrocarbons in Air Passing Through Hose
- MANDATORY APPENDIX I REFERENCE CODES, STANDARDS, AND SPECIFICATIONS
- MANDATORY APPENDIX II DEFINITIONS
- NONMANDATORY APPENDIX A DESIGN OF SUPPORTS AND LIFTING ATTACHMENTS
- NONMANDATORY APPENDIX B RECOMMENDATIONS FOR THE DESIGN OF THROUGH- PRESSURE BOUNDARY PENETRATIONS [Go to Page]
- B- 1 GENERAL [Go to Page]
- B- 2 PENETRATOR DESIGNS
- B- 3 COUPLING DETAILS
- B- 4 MATERIALS
- NONMANDTORY APPENDIX C RECOMMENDED PRACTICES FOR COLOR CODING AND LABELING [Go to Page]
- Table C- 1 U. S. Navy [Go to Page]
- Table C- 2 IMO
- NONMANDATORY APPENDIX D GUIDELINES FOR THE SUBMISSION OF A PVHO CASE FOR THE USE OF NONSTANDARD DESIGNS, MATERIALS, AND CONSTRUCTION [Go to Page]
- D- 1 INTRODUCTION [Go to Page]
- D- 2 GENERAL
- D- 3 MATERIALS
- D- 4 DESIGN
- D- 5 TESTING
- D- 6 QUALITY ASSURANCE OVERVIEW BY AN INDEPENDENT THIRD- PARTY AGENT
- D- 7 STATISTICAL ANALYSIS
- Table D- 7 Tabulated Data for Performance of " W- Test" for Normality of Data Set
- NONMANDATORY APPENDIX E USEFUL REFERENCES
- ASME PVHO-1 INTERPRETATIONS VOLUME 6 [Go to Page]
- Interpretation: 6-1
- Interpretation: 6-2
- Interpretation: 6-3
- Interpretation: 6-4
- Interpretation: 6-5
- Interpretation: 6-6
- Interpretation: 6-7
- Interpretation: 6-8
- ASME PVHO- 1 CASES [Go to Page]
- 1 GENERAL [Go to Page]
- Table 11- 1 Maximum Flange- to- Flange Relative Displacement
- 2 MATERIALS
- 3 DESIGN AND MANUFACTURE
- 4 TESTING
- 5 QUALITY ASSURANCE PROGRAM
- 6 MARKING
- 1 GENERAL
- Table 12- 1
- 2 MATERIALS
- 3 DESIGN AND MANUFACTURE
- Table 12- 2 Structural Nonmetallic Materials of Construction — Pressure Tube
- Table 12- 3 Test Procedures and/ or Specifications Listed in Table 12- 2 or Referred to in Case 12
- 4 TESTING
- 5 QUALITY ASSURANCE
- 6 MARKING
- 1 GENERAL
- 2 MATERIALS
- 3 DESIGN AND FABRICATION
- Table 15- 1 PVHO Materials of Construction
- 4 TESTING
- 5 QUALITY ASSURANCE PROGRAM
- 6 MARKING
- 7 DOCUMENTATION [Go to Page]