{"id":449359,"date":"2024-10-20T09:02:15","date_gmt":"2024-10-20T09:02:15","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/asme-pvho-1-2023\/"},"modified":"2024-10-26T16:54:22","modified_gmt":"2024-10-26T16:54:22","slug":"asme-pvho-1-2023","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/asme\/asme-pvho-1-2023\/","title":{"rendered":"ASME PVHO 1 2023"},"content":{"rendered":"

This Standard defines the requirements that are applicable to all pressure vessels for human occupancy (PVHOs) fabricated to this Standard (Sections 1 through 4) and shall be used in conjunction with specific requirements in Sections 5 through 7, as applicable, and Mandatory Appendices of this Standard. In the event of conflict between Sections 1 through 4 and Sections 5 through 7, the application-specific requirements from Sections 5 through 7 shall govern.<\/p>\n

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PDF Pages<\/th>\nPDF Title<\/th>\n<\/tr>\n
4<\/td>\nCONTENTS <\/td>\n<\/tr>\n
9<\/td>\nFOREWORD <\/td>\n<\/tr>\n
10<\/td>\nASME PRESSURE VESSELS FOR HUMAN OCCUPANCY COMMITTEE ROSTER <\/td>\n<\/tr>\n
13<\/td>\nCORRESPONDENCE WITH THE PVHO COMMITTEE <\/td>\n<\/tr>\n
15<\/td>\nASME PVHO-1\u20132023 SUMMARY OF CHANGES <\/td>\n<\/tr>\n
18<\/td>\nSection 1 General Requirements
1-1 INTRODUCTION
1-2 SCOPE
1-2.1 Application
1-2.2 Geometry
1-2.3 Limitations
1-3 EXCLUSIONS
1-4 USER REQUIREMENTS
1-5 MANUFACTURER\u2019S DATA REPORT <\/td>\n<\/tr>\n
19<\/td>\n1-6 MATERIALS
1-7 DESIGN AND FABRICATION REQUIREMENTS
1-7.1 Joint Design <\/td>\n<\/tr>\n
20<\/td>\n1-7.2 Welding
1-7.3 Nondestructive Testing
1-7.4 Electrical Outfitting
1-7.5 Viewports <\/td>\n<\/tr>\n
21<\/td>\n1-7.6 Penetrations
1-7.7 Inspection
1-7.8 Testing
1-7.9 Documentation <\/td>\n<\/tr>\n
22<\/td>\n1-7.10 Piping
1-7.11 Opening Reinforcements
1-7.12 Brazed or Riveted Construction
1-7.13 Hatch Design
1-7.14 Rectangular Door Design
1-7.15 Supports and Attachments
1-8 PRESSURE RELIEF DEVICES
1-9 MARKING
1-9.1 PVHO Pressure Vessel Manufacturer Marking <\/td>\n<\/tr>\n
23<\/td>\n1-9.2 PVHO Systems Integrator Marking
1-10 NONMETALLIC MATERIALS AND TOXICITY OFF-GAS TESTING <\/td>\n<\/tr>\n
24<\/td>\n1-11 RISK ANALYSIS
1-12 LITHIUM BATTERIES
1-12.1 Scope
1-12.2 Exclusions
1-12.3 Certification
1-12.4 Installation
1-12.5 Battery Housings <\/td>\n<\/tr>\n
25<\/td>\n1-12.6 Battery Management System (BMS) for Rechargeable Batteries
1-12.7 Protection for Nonrechargeable Batteries
1-12.8 Testing
1-12.9 Charging
1-12.10 Replacement
1-12.11 Manuals and Records <\/td>\n<\/tr>\n
26<\/td>\n1-13 AUTOMATIC CONTROL AND SOFTWARE SAFETY
1-14 OPERATIONAL PRESSURE CYCLE <\/td>\n<\/tr>\n
27<\/td>\nForms
PVHO-1 Form GR-1 Manufacturer\u2019s Data Report for Pressure Vessels for Human Occupancy <\/td>\n<\/tr>\n
28<\/td>\nPVHO-1 Form GR-1S Manufacturer\u2019s Data Report Supplementary Sheet <\/td>\n<\/tr>\n
29<\/td>\nFigures
Figure 1-7.1-1 Spherical Intermediate Head Attachment <\/td>\n<\/tr>\n
30<\/td>\nPVHO-1 Form GR-2 Systems Integrator Report for Pressure Vessels for Human Occupancy <\/td>\n<\/tr>\n
31<\/td>\nPVHO-1 Form GR-2S Systems Integrator Report Supplementary Sheet <\/td>\n<\/tr>\n
32<\/td>\nFigure 1-9.1-1 Form of Nameplate, U.S. Customary Units
Figure 1-9.1-2 Form of Nameplate, SI Units <\/td>\n<\/tr>\n
33<\/td>\nFigure 1-9.2-1 Form of Nameplate With Systems Integrator, U.S. Customary Units
Figure 1-9.2-2 Form of Nameplate With Systems Integrator, SI Units <\/td>\n<\/tr>\n
34<\/td>\nTables
Table 1-10-1 Conversion Factor, Fp (for PVHO Occupation Exceeding 8 hr) <\/td>\n<\/tr>\n
35<\/td>\nSection 2 Viewports
2-1 GENERAL
2-1.1 Scope
2-1.2 Exclusions
2-1.3 Certification
2-1.4 Nomenclature <\/td>\n<\/tr>\n
36<\/td>\n2-2 DESIGN
2-2.1 General
2-2.2 Standard Window Geometry <\/td>\n<\/tr>\n
37<\/td>\n2-2.3 Determination of Dimensions for Standard-Geometry Windows
2-2.4 Determination of Conversion Factor by Table Method
2-2.5 Determination of Short-Term Critical Pressure <\/td>\n<\/tr>\n
38<\/td>\n2-2.6 Design Life <\/td>\n<\/tr>\n
39<\/td>\n2-2.7 Temperature and Dimensional Criteria <\/td>\n<\/tr>\n
40<\/td>\n2-2.8 Viewport Flanges
2-2.9 Window Seats
2-2.10 Window Seals <\/td>\n<\/tr>\n
42<\/td>\n2-2.11 Dimensional Tolerances and Surface Finish <\/td>\n<\/tr>\n
43<\/td>\n2-2.12 Documentation
2-2.13 Windows With Inserts for Penetrators <\/td>\n<\/tr>\n
45<\/td>\n2-3 MATERIAL
2-3.1 Material Restrictions
2-3.2 Laminated Sheets
2-3.3 Acrylic Bonding
2-3.4 Acrylic Requirements <\/td>\n<\/tr>\n
46<\/td>\n2-3.5 Acrylic Form
2-3.6 Material Property Tests
2-3.7 Properties Test Specifications <\/td>\n<\/tr>\n
47<\/td>\n2-3.8 Testing for Residual Monomer <\/td>\n<\/tr>\n
48<\/td>\n2-3.9 Windows Greater Than 6 in. Thick
2-3.10 Bond Testing
2-3.11 Low Ultraviolet (UV) Cast Acrylic Cylinders
2-4 FABRICATION
2-4.1 Responsibilities and Duties for Window Fabricators
2-4.2 Quality Assurance and Marking
2-4.3 Use of Solvent
2-4.4 Identification
2-4.5 Annealing <\/td>\n<\/tr>\n
49<\/td>\n2-4.6 Polishing
2-4.7 Inspection
2-5 INSPECTION
2-5.1 General
2-5.2 Inspection Temperature and Orientation
2-5.3 Surface Scratches
2-5.4 Inclusion Inspection <\/td>\n<\/tr>\n
50<\/td>\n2-5.5 Scratch Characterizations
2-5.6 Repairs
2-5.7 Inspection Report
2-6 MARKING
2-6.1 Marking Location, Configurations <\/td>\n<\/tr>\n
51<\/td>\n2-6.2 Certification Completion
2-6.3 Marking Restrictions
2-6.4 Additional Marking
2-6.5 Marking Certification Retention
2-7 PRESSURE TESTING
2-7.1 Frequency
2-7.2 Test Configuration
2-7.3 Test Duration
2-7.4 Test Temperature
2-7.5 Window Leakage
2-7.6 Post-Test Inspection
2-7.7 Rejection Criteria <\/td>\n<\/tr>\n
52<\/td>\n2-7.8 Alternate Test Procedure
2-7.9 Reporting Requirements
2-7.10 Records Retention
2-8 INSTALLATION OF WINDOWS IN CHAMBERS
2-8.1 Cleaning
2-8.2 Lubrication
2-8.3 Assembly
2-9 REPAIR OF DAMAGED WINDOWS PRIOR TO BEING PLACED IN SERVICE
2-9.1 General
2-9.2 Damaged Window Criteria
2-9.3 Dimensional Assessment
2-9.4 Damage Severity Determination
2-9.5 Slightly Damaged Windows
2-9.6 Repairs of Slightly Damaged Windows <\/td>\n<\/tr>\n
53<\/td>\n2-9.7 Repair of Severely Damaged Windows
2-9.8 Repair of Spherical Window by Spot Casting
2-10 GUIDELINES FOR APPLICATION OF THE REQUIREMENTS OF SECTION 2
2-10.1 Introduction <\/td>\n<\/tr>\n
54<\/td>\n2-10.2 Sample Design Procedures
2-10.3 Sample Purchase Specification and Product Reviews <\/td>\n<\/tr>\n
55<\/td>\n2-10.4 Sample Pressure Test Instructions
2-10.5 Sample Calculations
2-11 NONSTANDARD WINDOW GEOMETRIES AND STANDARD WINDOW GEOMETRIES WITH LOWER CONVERSION FACTORS
2-11.1 Case Submittal Procedure <\/td>\n<\/tr>\n
56<\/td>\n2-11.2 Use in Standard PVHOs
2-11.3 Testing Criteria
2-11.4 STPP Test Procedure
2-11.5 LTPP Test Procedure <\/td>\n<\/tr>\n
57<\/td>\n2-11.6 CPP Test Procedure
2-11.7 Test Temperature Criteria
2-11.8 Fixturing
2-11.9 Scaling <\/td>\n<\/tr>\n
59<\/td>\nPVHO-1 Form VP-1 Fabrication Certification for Acrylic Windows <\/td>\n<\/tr>\n
60<\/td>\nPVHO-1 Form VP-2 Acrylic Window Design Certification <\/td>\n<\/tr>\n
61<\/td>\nFigure 2-2.2.1-1 Standard Window Geometries \u2014 Part 1 <\/td>\n<\/tr>\n
62<\/td>\nFigure 2-2.2.1-2 Standard Window Geometries \u2014 Part 2 <\/td>\n<\/tr>\n
63<\/td>\nFigure 2-2.2.1-3 Standard Window Geometries \u2014 Part 3 <\/td>\n<\/tr>\n
64<\/td>\nFigure 2-2.2.1-4 Standard Window Geometries \u2014 Part 4
Table 2-2.3.1-1 Conversion Factors for Acrylic Flat Disk Windows <\/td>\n<\/tr>\n
65<\/td>\nTable 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 <\/td>\n<\/tr>\n
66<\/td>\nTable 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) <\/td>\n<\/tr>\n
67<\/td>\nFigure 2-2.5.1-1 Short-Term Critical Pressure of Flat Disk Acrylic Windows \u2014 Part 1 <\/td>\n<\/tr>\n
68<\/td>\nFigure 2-2.5.1-2 Short-Term Critical Pressure of Flat Disk Acrylic Windows \u2014 Part 2 <\/td>\n<\/tr>\n
69<\/td>\nFigure 2-2.5.1-3 Short-Term Critical Pressure of Flat Disk Acrylic Windows \u2014 Part 3 <\/td>\n<\/tr>\n
70<\/td>\nFigure 2-2.5.1-4 Short-Term Critical Pressure of Conical Frustum Acrylic Windows \u2014 Part 1 <\/td>\n<\/tr>\n
71<\/td>\nFigure 2-2.5.1-5 Short-Term Critical Pressure of Conical Frustum Acrylic Windows \u2014 Part 2 <\/td>\n<\/tr>\n
72<\/td>\nFigure 2-2.5.1-6 Short-Term Critical Pressure of Spherical Sector Acrylic Windows \u2014 Part 1 <\/td>\n<\/tr>\n
73<\/td>\nFigure 2-2.5.1-7 Short-Term Critical Pressure of Spherical Sector Acrylic Windows \u2014 Part 2 <\/td>\n<\/tr>\n
74<\/td>\nFigure 2-2.5.1-8 Short-Term Critical Pressure of Cylindrical Acrylic Windows Pressurized Internally \u2014 Part 1 <\/td>\n<\/tr>\n
75<\/td>\nFigure 2-2.5.1-9 Short-Term Critical Pressure of Cylindrical Acrylic Windows Pressurized Internally \u2014 Part 2 <\/td>\n<\/tr>\n
76<\/td>\nFigure 2-2.5.1-10 Short-Term Critical Pressure of Cylindrical Acrylic Windows Pressurized Externally <\/td>\n<\/tr>\n
77<\/td>\nFigure 2-2.5.1-11 Short-Term Elastic Buckling of Cylindrical Acrylic Windows Between Supports Under External Hydrostatic Pressure \u2014 Part 1 <\/td>\n<\/tr>\n
78<\/td>\nFigure 2-2.5.1-12 Short-Term Elastic Buckling of Cylindrical Acrylic Windows Between Supports Under External Hydrostatic Pressure \u2014 Part 2 <\/td>\n<\/tr>\n
79<\/td>\nFigure 2-2.5.1-13 Short-Term Elastic Buckling of Cylindrical Acrylic Windows Between Supports Under External Hydrostatic Pressure \u2014 Part 3 <\/td>\n<\/tr>\n
80<\/td>\nFigure 2-2.5.1-14 Short-Term Critical Pressure of Hyperhemispherical and NEMO-Type Acrylic Windows \u2014 Part 1 <\/td>\n<\/tr>\n
81<\/td>\nFigure 2-2.5.1-15 Short-Term Critical Pressure of Hyperhemispherical and NEMO-Type Acrylic Windows \u2014 Part 2 <\/td>\n<\/tr>\n
82<\/td>\nFigure 2-2.9.1-1 Seat Cavity Requirements \u2014 Conical Frustum Window, Spherical Sector Window With Conical Edge, and Flat Disk Window <\/td>\n<\/tr>\n
83<\/td>\nFigure 2-2.9.1-2 Seat Cavity Requirements \u2014 Double-Beveled Disk Window <\/td>\n<\/tr>\n
84<\/td>\nFigure 2-2.9.1-3 Seat Cavity Requirements \u2014 Spherical Sector Window With Square Edge <\/td>\n<\/tr>\n
85<\/td>\nFigure 2-2.9.1-4 Seat Cavity Requirements \u2014 Hemispherical Window With Equatorial Flange <\/td>\n<\/tr>\n
86<\/td>\nFigure 2-2.9.1-5 Seat Cavity Requirements \u2014 Cylindrical Window <\/td>\n<\/tr>\n
87<\/td>\nFigure 2-2.9.1-6 Seat Cavity Requirements \u2014 Hyperhemispherical Window <\/td>\n<\/tr>\n
88<\/td>\nFigure 2-2.9.1-7 Seat Cavity Requirements \u2014 NEMO Window (Standard Seat) <\/td>\n<\/tr>\n
89<\/td>\nFigure 2-2.9.1-8 Seat Cavity Requirements \u2014 NEMO Window (Seat With Extended Cyclic Fatigue Life) <\/td>\n<\/tr>\n
90<\/td>\nFigure 2-2.10.10-1 Bevels on Window Edges \u2014 Flat Disk Windows, Conical Frustum Windows, Spherical Sector Windows, Hyperhemispheres <\/td>\n<\/tr>\n
91<\/td>\nFigure 2-2.10.10-2 Bevels on Window Edges \u2014 Flanged Hemispherical Window, Spherical Sector Window With Square Edge, External Pressure and Internal Pressure of Cylindrical Windows <\/td>\n<\/tr>\n
92<\/td>\nFigure 2-2.10.11-1 Acceptable Configurations for Clear Viewport Retaining Covers <\/td>\n<\/tr>\n
93<\/td>\nFigure 2-2.13.11-1 Dimensional Tolerances for Penetrations in Acrylic Windows <\/td>\n<\/tr>\n
94<\/td>\nTable 2-2.13.13-1 Specified Values of Physical Properties for Polycarbonate Plastic
Table 2-2.13.13-2 Specified Values of Physical Properties for Cast Nylon Plastic <\/td>\n<\/tr>\n
95<\/td>\nFigure 2-2.13.15-1 Dimensional Tolerances for Inserts in Acrylic Windows <\/td>\n<\/tr>\n
96<\/td>\nFigure 2-2.13.16-1 Typical Shapes of Inserts <\/td>\n<\/tr>\n
97<\/td>\nFigure 2-2.13.22-1 Seal Configurations for Inserts in Acrylic Windows <\/td>\n<\/tr>\n
98<\/td>\nFigure 2-2.13.24-1 Restraints for Inserts in Acrylic Windows <\/td>\n<\/tr>\n
99<\/td>\nTable 2-3.4-1 Specified Values of Physical Properties for Each Lot <\/td>\n<\/tr>\n
100<\/td>\nPVHO-1 Form VP-3 Material Manufacturer\u2019s Certification for Acrylic <\/td>\n<\/tr>\n
101<\/td>\nTable 2-3.4-2 Specified Values of Physical Properties for Each Casting <\/td>\n<\/tr>\n
102<\/td>\nPVHO-1 Form VP-4 Material Testing Certification for Acrylic <\/td>\n<\/tr>\n
103<\/td>\nTable 2-4.5-1 Annealing Schedule for Acrylic Windows <\/td>\n<\/tr>\n
104<\/td>\nPVHO-1 Form VP-5 Pressure Testing Certification <\/td>\n<\/tr>\n
105<\/td>\nPVHO-1 Form VP-6 Acrylic Window Repair Certification <\/td>\n<\/tr>\n
106<\/td>\nTable 2-11.5.2-1 ALTPP Test Options <\/td>\n<\/tr>\n
107<\/td>\nFigure 2-11.5.2-1 Alternative Long-Term Proof Pressure Test Acceptance Criteria <\/td>\n<\/tr>\n
108<\/td>\nSection 3 Quality Assurance for PVHO Manufacturers
3-1 GENERAL
3-1.1 Scope
3-1.2 Quality Assurance System Verification
3-2 RESPONSIBILITIES
3-2.1 Compliance With This Standard
3-2.2 Documentation of the Quality Assurance Program
3-2.3 Certification
3-2.4 Right of Access
3-2.5 Records <\/td>\n<\/tr>\n
109<\/td>\nSection 4 Piping Systems
4-1 GENERAL
4-1.1 Scope
4-1.2 Design and Fabrication <\/td>\n<\/tr>\n
110<\/td>\n4-2 MATERIAL REQUIREMENTS
4-2.1 Acceptable Materials
4-2.2 Limitations on Materials
4-2.3 Lubricants and Sealants
4-2.4 Nonmetallic Materials <\/td>\n<\/tr>\n
111<\/td>\n4-3 DESIGN OF COMPONENTS
4-3.1 Straight Piping Under External Pressure <\/td>\n<\/tr>\n
112<\/td>\n4-3.2 Straight Piping Under Internal Pressure
4-3.3 Bending of Pipe and Tube
4-3.4 Stress Analysis of Piping Components
4-3.5 Pressure Design of Fabricated Joints and Intersections
4-3.6 Pressure Design of Bolted Flanges and Blanks
4-3.7 Design of Penetrations Through the Pressure Boundaries of PVHOs
4-4 SELECTION AND LIMITATIONS OF PIPING COMPONENTS
4-4.1 Pressure Requirements
4-4.2 Valves <\/td>\n<\/tr>\n
113<\/td>\n4-4.3 Filters
4-4.4 Mufflers
4-5 SELECTION AND LIMITATIONS OF PIPING JOINTS
4-5.1 Welded Joints
4-5.2 Brazed Joints
4-5.3 Mechanical Joints
4-5.4 Threaded Joints <\/td>\n<\/tr>\n
114<\/td>\n4-5.5 Joints and Fittings in Tubes
4-6 SUPPORTS
4-7 INSPECTION
4-7.1 Inspection of Welded Joints
4-7.2 Inspection of Brazed Joints <\/td>\n<\/tr>\n
115<\/td>\n4-8 TESTING
4-8.1 Hydrostatic Tests
4-8.2 Pneumatic Tests
4-8.3 Leak Testing
4-9 SYSTEMS <\/td>\n<\/tr>\n
116<\/td>\n4-9.1 System Design Requirements
4-9.2 Pressurization and Depressurization Systems
4-9.3 Pressure Boundary Valve Requirements <\/td>\n<\/tr>\n
117<\/td>\n4-9.4 Pressure Gauges
4-9.5 Pressure Gauges Other Than Depth Gauges
4-9.6 Breathing Gas Systems <\/td>\n<\/tr>\n
118<\/td>\n4-9.7 Pressure Control Valves <\/td>\n<\/tr>\n
119<\/td>\n4-9.8 Pressure Relief Requirements
4-9.9 Color Coding <\/td>\n<\/tr>\n
120<\/td>\n4-9.10 Labeling
4-9.11 Soft Goods
4-9.12 Lubricants and Sealants
4-9.13 Cleaning Requirements
4-9.14 Off-Gassing Test for Hoses Used for Breathing Gas Service <\/td>\n<\/tr>\n
121<\/td>\nTable 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 <\/td>\n<\/tr>\n
122<\/td>\nFigure 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
Table 4-9.14.2-1 Maximum Allowable Concentration of Hydrocarbons in Air Passing Through Hose <\/td>\n<\/tr>\n
123<\/td>\nSection 5 Medical Hyperbaric Systems
5-1 GENERAL
5-1.1 Scope
5-1.2 User\u2019s Design Specification
5-1.3 Documentation
5-1.4 Viewports
5-1.5 Quick-Actuating Closures
5-1.6 Personnel Entry Lock
5-1.7 Penetrations
5-1.8 Personnel Egress <\/td>\n<\/tr>\n
124<\/td>\n5-1.9 Medical-Use PVHO Certifications
5-2 PVHO SYSTEM DESIGN
5-2.1 System Design Requirements
5-2.2 Pressure Boundary Valve Requirements
5-3 GAS SYSTEMS
5-3.1 Gas Supply Requirements
5-3.2 Breathing Devices
5-3.3 Breathing Device Gas Outlets
5-4 CONTROL SYSTEMS AND INSTRUMENTATION
5-4.1 Controls Location
5-4.2 Communications
5-5 ENVIRONMENTAL SYSTEMS
5-5.1 Environmental Conditions <\/td>\n<\/tr>\n
125<\/td>\n5-5.2 Temperature
5-5.3 Humidity
5-5.4 Contaminants
5-5.5 Lighting
5-5.6 External Heat Sources
5-5.7 Access to Emergency Equipment
5-5.8 Suction Systems
5-5.9 Accidental Depressurization
5-6 INSTALLATION TESTING
5-6.1 Installation
5-6.2 Handover <\/td>\n<\/tr>\n
126<\/td>\nSection 6 Diving Systems
6-1 GENERAL
6-1.1 Scope
6-1.2 User\u2019s Design Specification
6-1.3 Design Certification
6-1.4 Documentation <\/td>\n<\/tr>\n
127<\/td>\n6-1.5 Useful References
6-2 DESIGN
6-2.1 General
6-2.2 Design Loads
6-2.3 Environmental Requirements
6-2.4 Corrosion
6-2.5 External Pressure Rating
6-2.6 Impact Protection
6-2.7 Buoyancy
6-2.8 Occupant Requirements <\/td>\n<\/tr>\n
128<\/td>\n6-2.9 Lubricants and Sealants
6-2.10 Material Toxicity (Including Paints)
6-2.11 Emergency Recovery of Diving Bells
6-3 PRESSURE BOUNDARY
6-3.1 Personnel Access Doors\/Hatches <\/td>\n<\/tr>\n
129<\/td>\n6-3.2 Medical\/Service Locks
6-3.3 Closures
6-3.4 Quick-Acting Closures for Diving Bells and Hyperbaric Evacuation Systems
6-3.5 Trunks and Tunnels <\/td>\n<\/tr>\n
130<\/td>\n6-3.6 Viewports
6-3.7 Lighting Devices
6-3.8 Service Penetrators
6-3.9 Electrical Penetrators
6-3.10 Fiber-Optic Penetrators
6-4 SYSTEMS
6-4.1 Life-Support Systems <\/td>\n<\/tr>\n
132<\/td>\n6-4.2 Sanitary Systems
6-4.3 Electrical Systems <\/td>\n<\/tr>\n
134<\/td>\n6-4.4 Lighting Systems
6-4.5 Communication Systems
6-4.6 Fire Protection and Detection Systems
6-5 HANDLING SYSTEMS
6-5.1 General
6-5.2 Design <\/td>\n<\/tr>\n
135<\/td>\n6-5.3 Test and Trials
6-6 HYPERBARIC EVACUATION SYSTEMS
6-6.1 General
6-6.2 Hyperbaric Evacuation Unit User Requirements <\/td>\n<\/tr>\n
136<\/td>\n6-6.3 Life-Support Package (LSP) <\/td>\n<\/tr>\n
137<\/td>\n6-6.4 Hyperbaric Evacuation Launch Systems
6-6.5 HEU Interfaces
6-7 TESTING AND TRIALS
6-7.1 System Pressure Tests
6-7.2 System Functional Tests <\/td>\n<\/tr>\n
138<\/td>\nFigure 6-6.2.2-1 Placement and Design of Markings for Hyperbaric Evacuation Units Designed to Float in Water <\/td>\n<\/tr>\n
139<\/td>\nFigure 6-6.2.2-2 Markings for Hyperbaric Evacuation Units Designed to Float in Water <\/td>\n<\/tr>\n
140<\/td>\nSection 7 Submersibles
7-1 GENERAL
7-1.1 Scope
7-1.2 General Requirements
7-1.3 User\u2019s Design Specification
7-1.4 Design Certification
7-1.5 Documentation <\/td>\n<\/tr>\n
141<\/td>\n7-1.6 Operations Manual
7-2 PRESSURE BOUNDARY
7-2.1 General
7-2.2 Hatches
7-2.3 Viewports
7-2.4 Penetrators <\/td>\n<\/tr>\n
142<\/td>\n7-3 PIPING
7-3.1 Exceptions and Alternatives
7-3.2 Internal and External Pressures
7-3.3 Ambient Pressure
7-3.4 Inaccessible Spaces
7-3.5 Hull Valves
7-3.6 Plug Valves
7-3.7 Pressure Containers <\/td>\n<\/tr>\n
143<\/td>\n7-4 ELECTRICAL SYSTEMS
7-4.1 General
7-4.2 Power Supplies
7-4.3 Electrical Cables
7-4.4 Battery Compartments
7-4.5 Emergency Lighting
7-5 LIFE SUPPORT
7-5.1 General <\/td>\n<\/tr>\n
144<\/td>\n7-5.2 Main Life Support
7-5.3 Emergency Life Support
7-5.4 Consumption Rates
7-5.5 Oxygen Systems and Storage
7-5.6 Monitoring
7-6 FIRE PROTECTION
7-6.1 Materials
7-6.2 Toxicity
7-6.3 Smoke Detectors
7-6.4 Extinguishers
7-7 NAVIGATION
7-7.1 General <\/td>\n<\/tr>\n
145<\/td>\n7-7.2 Propulsion
7-7.3 Depth Gauges
7-7.4 Depth Alarm
7-7.5 Obstacle Avoidance
7-7.6 Surfaced Detection
7-7.7 Submerged Detection
7-8 COMMUNICATIONS
7-8.1 General
7-8.2 VHF Radio
7-8.3 Underwater Telephone (UWT)
7-8.4 Pinger
7-9 INSTRUMENTATION
7-9.1 General
7-9.2 Water Intrusion
7-9.3 Power Levels
7-9.4 Voltage and Current Meters
7-9.5 Ground Faults
7-9.6 Ballast Water
7-10 BUOYANCY, STABILITY, EMERGENCY ASCENT, AND ENTANGLEMENT
7-10.1 General <\/td>\n<\/tr>\n
146<\/td>\n7-10.2 Underwater Operation
7-10.3 Surfacing
7-10.4 Jettisoning System
7-10.5 Entanglement
7-11 EMERGENCY EQUIPMENT
7-11.1 Life Jackets
7-11.2 First Aid Kit <\/td>\n<\/tr>\n
147<\/td>\n7-11.3 Thermal Protection
7-11.4 Rations
7-11.5 Tow Point
7-12 HADAL-ZONE SUBMERSIBLES
7-12.1 Reserve Power
7-12.2 Reserve Life Support
7-12.3 Buoyancy, Stability, Emergency Ascent, and Entanglement <\/td>\n<\/tr>\n
148<\/td>\nMANDATORY APPENDICES
MANDATORY APPENDIX I REFERENCE CODES, STANDARDS, AND SPECIFICATIONS <\/td>\n<\/tr>\n
150<\/td>\nMANDATORY APPENDIX II DEFINITIONS <\/td>\n<\/tr>\n
156<\/td>\nNONMANDATORY APPENDICES
NONMANDATORY APPENDIX A DESIGN OF SUPPORTS AND LIFTING ATTACHMENTS <\/td>\n<\/tr>\n
157<\/td>\nNONMANDATORY APPENDIX B RECOMMENDATIONS FOR THE DESIGN OF THROUGH-PRESSURE BOUNDARY PENETRATIONS
B-1 GENERAL
B-2 PENETRATOR DESIGNS
B-3 COUPLING DETAILS
B-4 MATERIALS <\/td>\n<\/tr>\n
158<\/td>\nFigure B-2-1 Acceptable Weld Nozzle Penetrators <\/td>\n<\/tr>\n
159<\/td>\nFigure B-3-1 Acceptable Threads and Inserts <\/td>\n<\/tr>\n
160<\/td>\nTable C-1 U.S. Navy Color Codes
Table C-2 IMO Color Codes
NONMANDATORY APPENDIX C RECOMMENDED PRACTICES FOR COLOR CODING AND LABELING <\/td>\n<\/tr>\n
161<\/td>\nNONMANDATORY APPENDIX D GUIDELINES FOR THE SUBMISSION OF A CASE FOR THE USE OF NONSTANDARD DESIGNS, MATERIALS, AND CONSTRUCTION FOR NON-FLEXIBLE PVHO CHAMBER FABRICATION
D-1 INTRODUCTION
D-2 GENERAL <\/td>\n<\/tr>\n
162<\/td>\nD-3 MATERIALS
D-4 DESIGN
D-5 TESTING <\/td>\n<\/tr>\n
164<\/td>\nD-6 QUALITY ASSURANCE OVERVIEW BY AN INDEPENDENT THIRD-PARTY AGENT
D-7 STATISTICAL ANALYSIS <\/td>\n<\/tr>\n
167<\/td>\nTable D-7.1-1 Tabulated Data for Performance of \u201cW-Test\u201d for Normality of Data Set <\/td>\n<\/tr>\n
168<\/td>\nNONMANDATORY APPENDIX E GUIDELINES FOR PREPARING A PERFORMANCE-BASED CASE FOR FLEXIBLE PVHO CHAMBERS AND SYSTEMS
E-1 GENERAL REQUIREMENTS <\/td>\n<\/tr>\n
169<\/td>\nE-2 DESIGN <\/td>\n<\/tr>\n
171<\/td>\nE-3 MATERIALS <\/td>\n<\/tr>\n
173<\/td>\nE-4 QUALITY ASSURANCE PROGRAM <\/td>\n<\/tr>\n
175<\/td>\nE-5 TESTING <\/td>\n<\/tr>\n
179<\/td>\nE-6 DOCUMENTATION
E-7 MARKING <\/td>\n<\/tr>\n
181<\/td>\nTable E-1.1-1 Compliance Matrix for ASME PVHO-1 Cases <\/td>\n<\/tr>\n
195<\/td>\nFigure E-3.3.1-1 Cook\u2019s Diagram: Atmosphere of Increased Burning Rate <\/td>\n<\/tr>\n
196<\/td>\nFigure E-5.2.2.1-1 Number of Test Samples Required for Alternate Creep Test Procedure <\/td>\n<\/tr>\n
197<\/td>\nFigure E-5.2.5.1-1 Time Versus Test Temperature for Accelerated Aging Test <\/td>\n<\/tr>\n
198<\/td>\nNONMANDATORY APPENDIX F USEFUL REFERENCES <\/td>\n<\/tr>\n
200<\/td>\nNONMANDATORY APPENDIX G ALTERNATIVE DESIGN RULES FOR EXTERNAL PRESSURE VESSELS
G-1 GENERAL
G-2 NOMENCLATURE <\/td>\n<\/tr>\n
201<\/td>\nG-3 MATERIALS <\/td>\n<\/tr>\n
202<\/td>\nG-4 STIFFENED AND UNSTIFFENED CYLINDERS <\/td>\n<\/tr>\n
203<\/td>\nG-5 MINIMUM REQUIRED THICKNESS FOR UNSTIFFENED SPHERES AND FORMED HEADS <\/td>\n<\/tr>\n
204<\/td>\nG-6 PRESSURE TESTING FOR ALTERNATIVE DESIGN RULES <\/td>\n<\/tr>\n
205<\/td>\nFigure G-1-1 Geometry of Cylinders <\/td>\n<\/tr>\n
206<\/td>\nFigure G-1-2 Stiffener Geometry
Figure G-1-3 Sections Through Rings <\/td>\n<\/tr>\n
207<\/td>\nFigure G-5-1 Values of t\/Ro and Lc\/Ro <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

ASME PVHO-1-2023 Safety Standard for Pressure Vessels for Human Occupancy<\/b><\/p>\n\n\n\n\n
Published By<\/td>\nPublication Date<\/td>\nNumber of Pages<\/td>\n<\/tr>\n
ASME<\/b><\/a><\/td>\n2023<\/td>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":449367,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[2643],"product_tag":[],"class_list":{"0":"post-449359","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-asme","8":"first","9":"instock","10":"sold-individually","11":"shipping-taxable","12":"purchasable","13":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product\/449359","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media\/449367"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=449359"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=449359"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=449359"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}