{"id":169453,"date":"2024-10-19T10:24:46","date_gmt":"2024-10-19T10:24:46","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/asme-pvho-1-2016\/"},"modified":"2024-10-25T02:35:21","modified_gmt":"2024-10-25T02:35:21","slug":"asme-pvho-1-2016","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/asme\/asme-pvho-1-2016\/","title":{"rendered":"ASME PVHO 1 2016"},"content":{"rendered":"

This Standard provides requirements for the design, fabrication, inspection, testing, marking, and stamping of pressure vessels for human occupancy, having an internal or external pressure differential exceeding 2 psi. This Standard also provides requirements for the design, fabrication, inspection, testing, cleaning, and certification of piping systems for PVHOs. A PVHO is a pressure vessel that encloses a human being within its pressure boundary while it is under internal or external pressure that exceeds a 2 psi differential pressure. PVHOs include, but are not limited to, submersibles, diving bells, personnel transfer capsules, decompression chambers, recompression chambers, hyperbaric chambers, high altitude chambers, and medical hyperbaric oxygenation facilities. This does not include nuclear reactor containments, pressurized airplane and aerospace vehicle cabins, and caissons.<\/p>\n

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PDF Pages<\/th>\nPDF Title<\/th>\n<\/tr>\n
4<\/td>\nCONTENTS <\/td>\n<\/tr>\n
5<\/td>\nFIGURES <\/td>\n<\/tr>\n
6<\/td>\nTABLES <\/td>\n<\/tr>\n
7<\/td>\nForms <\/td>\n<\/tr>\n
8<\/td>\nFOREWORD <\/td>\n<\/tr>\n
9<\/td>\nCOMMITTEE ROSTER <\/td>\n<\/tr>\n
11<\/td>\nCORRESPONDENCE WITH THE PVHO COMMITTEE <\/td>\n<\/tr>\n
13<\/td>\nASME PVHO-1-2016 SUMMARY OF CHANGES <\/td>\n<\/tr>\n
16<\/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 <\/td>\n<\/tr>\n
17<\/td>\n1-5 MANUFACTURER’S DATA REPORT
1-6 MATERIALS
1-7 DESIGN AND FABRICATION REQUIREMENTS
1-7.1 Joint Design <\/td>\n<\/tr>\n
18<\/td>\n1-7.2 Welding
1-7.3 Nondestructive Testing
1-7.4 Electrical Outfitting
1-7.5 Viewports
1-7.6 Penetrations
1-7.7 Inspection
1-7.8 Testing <\/td>\n<\/tr>\n
19<\/td>\n1-7.9 Documentation
1-7.10 Piping
1-7.11 Opening Reinforcements
1-7.12 Brazed or Riveted Construction
1-7.13 Alternative Design Rules for External Pressure Vessels
1-7.13.1 General. <\/td>\n<\/tr>\n
20<\/td>\nPVHO-1 Form GR-1 Manufacturer’s Data Report for Pressure Vessels for Human Occupancy <\/td>\n<\/tr>\n
21<\/td>\nPVHO-1 Form GR-1S Manufacturer\u2019s Data Report Supplementary Sheet <\/td>\n<\/tr>\n
22<\/td>\nFig. 1-7.13.1-1 Geometry of Cylinders <\/td>\n<\/tr>\n
23<\/td>\nFig. 1-7.13.1-2 Stiffener Geometry
Fig. 1-7.13.1-3 Sections Through Rings <\/td>\n<\/tr>\n
24<\/td>\n1-7.13.2 Nomenclature <\/td>\n<\/tr>\n
25<\/td>\n1-7.13.3 Materials
1-7.13.4 Stiffened and Unstiffened Cylinders <\/td>\n<\/tr>\n
26<\/td>\n1-7.13.5 Minimum Required Thickness for Unstiffened Spheres and Formed Heads <\/td>\n<\/tr>\n
27<\/td>\nFig. 1-7.13.5-1 Values of t\/Ro and Lc\/Ro <\/td>\n<\/tr>\n
28<\/td>\n1-7.13.6 Pressure Testing for Alternative Design Rules.
1-7.14 Hatch Design
1-7.15 Rectangular Door Design
1-7.16 Supports and Attachments
1-8 PRESSURE RELIEF DEVICES
1-9 MARKING <\/td>\n<\/tr>\n
29<\/td>\n1-10 NONMETALLIC MATERIALS AND TOXICITY OFF-GAS TESTING
Fig. 1-9-1 Form of Nameplate, U.S. Customary
Fig. 1-9-2 Form of Nameplate, Metric <\/td>\n<\/tr>\n
30<\/td>\n1-11 RISK ANALYSIS
Table 1-10-1 Conversion Factor, Fp (for PVHO Occupation Exceeding 8 hr) <\/td>\n<\/tr>\n
31<\/td>\nSection 2 Viewports
2-1 GENERAL
2-1.1 Scope
2-1.2 Exclusions
2-1.3 Certification
2-1.3.1 Traceability.
2-1.3.2 Additional Requirements.
2-2 DESIGN
2-2.1 General
2-2.2 Standard Window Geometry
2-2.2.1 Configuration. <\/td>\n<\/tr>\n
32<\/td>\nPVHO-1 Form VP-1 Fabrication Certification for Acrylic Windows <\/td>\n<\/tr>\n
33<\/td>\nFig. 2-2.2.1-1 Standard Window Geometries \u2014 Part 1 <\/td>\n<\/tr>\n
34<\/td>\nFig. 2-2.2.1-2 Standard Window Geometries \u2014 Part 2 <\/td>\n<\/tr>\n
35<\/td>\nFig. 2-2.2.1-3 Standard Window Geometries \u2014 Part 3 <\/td>\n<\/tr>\n
36<\/td>\nFig. 2-2.2.1-4 Standard Window Geometries \u2014 Part 4 <\/td>\n<\/tr>\n
37<\/td>\n2-2.2.2 Calculation.
2-2.2.3 Tests.
2-2.3 Determination of Dimensions for Standard-Geometry Windows
2-2.3.1 0 psi to 10,000 psi.
2-2.3.2 10,000 psi to 20,000 psi.
2-2.4 Determination of Conversion Factor by Table Method
2-2.4.1 Temperature.
2-2.4.2 Pressure.
2-2.4.3 Values of Conversion Factors.
2-2.5 Determination of Short-Term Critical Pressure
2-2.5.1 Calculation Method. <\/td>\n<\/tr>\n
38<\/td>\nTable 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 <\/td>\n<\/tr>\n
39<\/td>\nTable 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 <\/td>\n<\/tr>\n
40<\/td>\nTable 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
41<\/td>\nFig. 2-2.5.1-1 Short-Term Critical Pressure of Flat Disk Acrylic Windows \u2014 Part 1 <\/td>\n<\/tr>\n
42<\/td>\nFig. 2-2.5.1-2 Short-Term Critical Pressure of Flat Disk Acrylic Windows \u2014 Part 2 <\/td>\n<\/tr>\n
43<\/td>\nFig. 2-2.5.1-3 Short-Term Critical Pressure of Flat Disk Acrylic Windows \u2014 Part 3 <\/td>\n<\/tr>\n
44<\/td>\nFig. 2-2.5.1-4 Short-Term Critical Pressure of Conical Frustum Acrylic Windows \u2014 Part 1 <\/td>\n<\/tr>\n
45<\/td>\nFig. 2-2.5.1-5 Short-Term Critical Pressure of Conical Frustum Acrylic Windows \u2014 Part 2 <\/td>\n<\/tr>\n
46<\/td>\nFig. 2-2.5.1-6 Short-Term Critical Pressure of Spherical Sector Acrylic Windows \u2014 Part 1 <\/td>\n<\/tr>\n
47<\/td>\nFig. 2-2.5.1-7 Short-Term Critical Pressure of Spherical Sector Acrylic Windows \u2014 Part 2 <\/td>\n<\/tr>\n
48<\/td>\n2-2.5.2 Testing Method.
2-2.6 Nonstandard Window Geometries and Standard Window Geometries With Lower Conversion Factors
2-2.6.1 Case Submittal Procedure.
2-2.6.2 Use in Standard PVHOs.
2-2.6.3 Testing Criteria. <\/td>\n<\/tr>\n
49<\/td>\nFig. 2-2.5.1-8 Short-Term Critical Pressure of Cylindrical Acrylic Windows Pressurized Internally \u2014 Part 1 <\/td>\n<\/tr>\n
50<\/td>\nFig. 2-2.5.1-9 Short-Term Critical Pressure of Cylindrical Acrylic Windows Pressurized Internally \u2014 Part 2 <\/td>\n<\/tr>\n
51<\/td>\nFig. 2-2.5.1-10 Short-Term Critical Pressure of Cylindrical Acrylic Windows Pressurized Externally <\/td>\n<\/tr>\n
52<\/td>\nFig. 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
53<\/td>\nFig. 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
54<\/td>\nFig. 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
55<\/td>\nFig. 2-2.5.1-14 Short-Term Critical Pressure of Hyperhemispherical and NEMO-Type Acrylic Windows \u2014 Part 1 <\/td>\n<\/tr>\n
56<\/td>\nFig. 2-2.5.1-15 Short-Term Critical Pressure of Hyperhemispherical and NEMO-Type Acrylic Windows \u2014 Part 2 <\/td>\n<\/tr>\n
57<\/td>\n2-2.6.4 STPP Test Procedure.
2-2.6.5 LTPP Test Procedure.
2-2.6.6 CPP Test Procedure.
2-2.6.7 Test Temperature Criteria.
2-2.6.8 Fixturing.
2-2.6.9 Scaling. <\/td>\n<\/tr>\n
58<\/td>\n2-2.7 Design Life
2-2.7.1 General.
2-2.7.2 Flat Disk Windows.
2-2.7.3 Conical Frustum Windows.
2-2.7.4 Double Beveled Disk Windows.
2-2.7.5 Spherical Sector With Conical Edge, Hyperhemisphere With Conical Edge, and NEMO-Type Windows With Conical Edge Penetrations.
2-2.7.6 Spherical Sector Windows With Square Edge and Hemispherical Windows with Equatorial Flange.
2-2.7.7 Cylindrical Windows for Internal Pressure Applications.
2-2.7.8 Cylindrical Windows for External Pressure Applications.
2-2.7.9 Increase in Cyclic Design Life. <\/td>\n<\/tr>\n
59<\/td>\n2-2.8 Temperature and Dimensional Criteria
2-2.8.1 Thermal Expansion.
2-2.8.2 Shape and Sealing Arrangement.
2-2.8.3 Clearance Criteria.
2-2.8.4 Window and Seat Diameter.
2-2.9 Viewport Flanges
2-2.9.1 Contribution of Window to Reinforcement.
2-2.9.2 Calculation Method.
2-2.9.3 Reinforcement.
2-2.9.4 Requirements for Large Openings.
2-2.10 Window Seats
2-2.10.1 Dimensional Requirements.
2-2.10.2 Surface Finish.
2-2.10.3 Corrosion Mitigation.
2-2.11 Window Seals
2-2.11.1 General Requirements. <\/td>\n<\/tr>\n
60<\/td>\nFig. 2-2.10.1-1 Seat Cavity Requirements \u2014 Conical Frustum Window, Spherical Sector Window With Conical Edge, and Flat Disk Window <\/td>\n<\/tr>\n
61<\/td>\nFig. 2-2.10.1-2 Seat Cavity Requirements \u2014 Double Beveled Disk Window <\/td>\n<\/tr>\n
62<\/td>\nFig. 2-2.10.1-3 Seat Cavity Requirements \u2014 Spherical Sector Window With Square Edge <\/td>\n<\/tr>\n
63<\/td>\nFig. 2-2.10.1-4 Seat Cavity Requirements \u2014 Hemispherical Window With Equatorial Flange <\/td>\n<\/tr>\n
64<\/td>\nFig. 2-2.10.1-5 Seat Cavity Requirements \u2014 Cylindrical Window <\/td>\n<\/tr>\n
65<\/td>\nFig. 2-2.10.1-6 Seat Cavity Requirements \u2014 Hyperhemispherical Window <\/td>\n<\/tr>\n
66<\/td>\nFig. 2-2.10.1-7 Seat Cavity Requirements \u2014 NEMO Window (Standard Seat) <\/td>\n<\/tr>\n
67<\/td>\nFig. 2-2.10.1-8 Seat Cavity Requirements \u2014 NEMO Window (Seat With Extended Cyclic Fatigue Life) <\/td>\n<\/tr>\n
68<\/td>\n2-2.11.2 Flat Disk Windows.
2-2.11.3 Retainer Rings.
2-2.11.4 Gasket Compression.
2-2.11.5 Electrogalvanic Requirements.
2-2.11.6 Retainer Ring Design Factor.
2-2.11.7 Minimum Compression.
2-2.11.8 Secondary Seal.
2-2.11.9 Seal Ring Grooves
2-2.11.10 Edge Seals.
2-2.11.11 Clear Viewport Retaining Covers. <\/td>\n<\/tr>\n
69<\/td>\nFig. 2-2.11.10-1 Bevels on Window Edges \u2014 Flat Disk Windows, Conical Frustum Windows, Spherical Sector Windows, Hyperhemispheres <\/td>\n<\/tr>\n
70<\/td>\nFig. 2-2.11.10-2 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
71<\/td>\n2-2.11.12 Configurations.
2-2.11.13 Replacement Windows.
2-2.12 Dimensional Tolerances and Surface Finish
2-2.12.1 Thickness.
2-2.12.2 Conical Windows
2-2.12.3 Spherical Sector Windows.
2-2.12.4 Flat Disk Windows
2-2.12.4.1 Window External Diameter.
2-2.12.4.2 Seat Cavity Diameter. <\/td>\n<\/tr>\n
72<\/td>\nFig. 2-2.11.11-1 Acceptable Configurations for Clear Viewport Retaining Covers <\/td>\n<\/tr>\n
73<\/td>\n2-2.12.5 Spherical Windows
2-2.12.6 Cylindrical Windows.
2-2.12.7 Surface Finish.
2-2.12.8 Viewing Surface.
2-2.12.9 Other Surfaces.
2-2.13 Documentation
2-2.13.1 Drawing Requirements.
2-2.13.2 Window Identification.
2-2.13.3 Design Certification.
2-2.13.4 Drawing Transmittal.
2-2.14 Windows With Inserts for Penetrators
2-2.14.1 General.
2-2.14.2 Shape Limitations.
2-2.14.3 Penetration Limitations. <\/td>\n<\/tr>\n
74<\/td>\nPVHO-1 Form VP-2 Acrylic Window Design Certification <\/td>\n<\/tr>\n
75<\/td>\n2-2.14.4 Penetration Locations (Spherical Shell Sector).
2-2.14.5 Penetration Location (Hemispheres).
2-2.14.6 Penetration Configuration.
2-2.14.7 Area of Single Penetration.
2-2.14.8 Total Area.
2-2.14.9 Seats.
2-2.14.10 Included Angle.
2-2.14.11 Maximum Diameter.
2-2.14.12 Tolerances.
2-2.14.13 Insert Material.
2-2.14.14 Temperature Considerations.
2-2.14.15 Insert Tolerances.
2-2.14.16 Insert Shape.
2-2.14.17 Metal Inserts.
2-2.14.18 Polycarbonate Inserts.
2-2.14.19 Acrylic Inserts. <\/td>\n<\/tr>\n
76<\/td>\nFig. 2-2.14.11-1 Dimensional Tolerances for Penetrations in Acrylic Windows <\/td>\n<\/tr>\n
77<\/td>\nTable 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 <\/td>\n<\/tr>\n
78<\/td>\nFig. 2-2.14.15-1 Dimensional Tolerances for Inserts in Acrylic Windows <\/td>\n<\/tr>\n
79<\/td>\nFig. 2-2.14.16-1 Typical Shapes of Inserts <\/td>\n<\/tr>\n
80<\/td>\n2-2.14.20 Insert Thickness.
2-2.14.21 Duplicate Inserts.
2-2.14.22 Insert Seals.
2-2.14.23 Insert Seal Grooves.
2-2.14.24 Insert Retention.
2-2.14.25 Insert Stress Relief.
2-2.14.26 Insert Inspection.
2-2.14.27 Insert Pressure Test.
2-2.14.28 Insert Inspection.
2-2.14.29 Insert Certification Procedure. <\/td>\n<\/tr>\n
81<\/td>\nFig. 2-2.14.22-1 Seal Configurations for Inserts in Acrylic Windows <\/td>\n<\/tr>\n
82<\/td>\nFig. 2-2.14.24-1 Restraints for Inserts in Acrylic Windows <\/td>\n<\/tr>\n
83<\/td>\n2-3 MATERIAL
2-3.1 Material Restrictions
2-3.2 Laminated Sheets
2-3.3 Acrylic Bonding
2-3.4 Acrylic Requirements
2-3.5 Acrylic Form
2-3.6 Material Property Tests <\/td>\n<\/tr>\n
84<\/td>\nTable 2-3.4-1 Specified Values of Physical Properties for Each Lot <\/td>\n<\/tr>\n
85<\/td>\n2-3.7 Properties Test Specifications
PVHO-1 Form VP-3 Material Manufacturer’s Certification for Acrylic <\/td>\n<\/tr>\n
86<\/td>\nTable 2-3.4-2 Specified Values of Physical Properties for Each Casting <\/td>\n<\/tr>\n
87<\/td>\nPVHO-1 Form VP-4 Material Testing Certification for Acrylic <\/td>\n<\/tr>\n
88<\/td>\n2-3.8 Testing for Unpolymerized Acrylic
2-3.9 Windows Greater Than 6 in. Thick
2-3.10 Bond Testing
2-4 FABRICATION
2-4.1 Responsibilities and Duties for Window Fabricators <\/td>\n<\/tr>\n
89<\/td>\n2-4.2 Quality Assurance and Marking
2-4.3 Use of Solvent
2-4.4 Identification
2-4.5 Annealing
2-4.6 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
90<\/td>\nTable 2-4.5-1 Annealing Schedule for Acrylic Windows <\/td>\n<\/tr>\n
91<\/td>\n2-5.5 Scratch Characterizations <\/td>\n<\/tr>\n
92<\/td>\n2-5.6 Repairs
2-5.7 Inspection Report
2-6 MARKING
2-6.1 Marking Location, Configurations
2-6.2 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 <\/td>\n<\/tr>\n
93<\/td>\nPVHO-1 Form VP-5 Pressure Testing Certification <\/td>\n<\/tr>\n
94<\/td>\n2-7.3 Test Duration
2-7.4 Test Temperature
2-7.5 Window Leakage
2-7.6 Post-Test Inspection
2-7.7 Rejection Criteria
2-7.8 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 <\/td>\n<\/tr>\n
95<\/td>\n2-9.3 Dimensional Assessment
2-9.4 Damage Severity Determination
2-9.5 Slightly Damaged Windows
2-9.6 Repairs of Slightly Damaged Windows
2-9.7 Repair of Severely Damaged Windows
2-9.8 Repair of Spherical Window by Spot Casting <\/td>\n<\/tr>\n
96<\/td>\n2-10 GUIDELINES FOR APPLICATION OF THE REQUIREMENTS OF SECTION 2
2-10.1 Introduction
2-10.2 Sample Design Procedures <\/td>\n<\/tr>\n
97<\/td>\nPVHO-1 Form VP-6 Acrylic Window Repair Certification <\/td>\n<\/tr>\n
98<\/td>\n2-10.3 Sample Purchase Specification and Product Reviews
2-10.4 Sample Pressure Test Instructions
2-10.5 Sample Calculations <\/td>\n<\/tr>\n
100<\/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
101<\/td>\nSection 4 Piping Systems
4-1 GENERAL
4-1.1 Scope
4-1.2 Design and Fabrication
4-1.2.1 User\u0152s Design Specification.
4-1.2.2 Design Certification.
4-1.2.3 Fabricator\u0152s Certification.
4-1.2.4 Data Retention.
4-1.2.5 Medical-Use PVHO Certifications. <\/td>\n<\/tr>\n
102<\/td>\n4-2 MATERIAL REQUIREMENTS
4-2.1 Acceptable Materials
4-2.1.1 Pipe and Tube.
4-2.1.2 Fittings.
4-2.2 Limitations on Materials
4-2.2.1 Service Requirements.
4-2.2.2 Carbon Steel.
4-2.2.3 Aluminum.
4-2.2.4 Castings.
4-2.2.5 Seawater Service.
4-2.2.6 Oxygen Service.
4-2.3 Lubricants and Sealants
4-2.4 Nonmetallic Materials
4-2.4.1 Hose Materials and Pressure Ratings
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 <\/td>\n<\/tr>\n
103<\/td>\n4-2.4.2 Installation
4-2.4.3 Marking.
4-2.4.4 Hoses Subject to External Pressure.
4-2.4.5 Testing <\/td>\n<\/tr>\n
104<\/td>\n4-2.4.6 Nonmetallic Pipe and Tube and Bonding Agents.
4-3 DESIGN OF COMPONENTS
4-3.1 Straight Piping Under External Pressure
4-3.2 Straight Piping Under Internal Pressure
4-3.2.1 Minimum Wall Thickness.
4-3.2.2 Additional Thickness Requirements.
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
4-4.1.1 Maximum Allowable Working Pressure.
4-4.1.2 Differential Pressures. <\/td>\n<\/tr>\n
105<\/td>\n4-4.1.3 Alternating Internal and External Pressures.
4-4.1.4 Pressure Ratings.
4-4.2 Valves
4-4.2.1 Valves Subject to Internal and External Pressures.
4-4.2.2 Stop Valves.
4-4.2.3 Ball Valves.
4-4.2.4 Service Access.
4-4.2.5 Quick-Opening Valves.
4-4.2.6 Remotely Operated Valves.
4-4.2.7 Relief Valves.
4-4.3 Filters
4-4.3.1 Element Collapse Pressure Rating.
4-4.3.2 Element Construction.
4-4.3.3 Bypass Requirements.
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
4-5.3.1 Seal Selection.
4-5.4 Threaded Joints
4-5.4.1 Pressure Limitations <\/td>\n<\/tr>\n
106<\/td>\n4-5.4.2 Helium Service.
4-5.4.3 Lubricants.
4-5.4.4 Seal Welding.
4-5.4.5 Stainless Steel Threads.
4-5.4.6 Straight Threads.
4-5.4.7 Aluminum Threads.
4-5.5 Joints and Fittings in Tubes
4-5.5.1 Fittings Subject to Frequent Disassembly.
4-5.5.2 Limitations.
4-5.5.3 Restrictions.
4-5.5.4 Cutting of Tube.
4-6 SUPPORTS
4-7 INSPECTION
4-7.1 Inspection of Welded Joints <\/td>\n<\/tr>\n
107<\/td>\n4-7.2 Inspection of Brazed Joints
4-8 TESTING
4-8.1 Hydrostatic Tests
4-8.1.1 Test Fluid.
4-8.1.2 Test Pressure.
4-8.1.3 Holding Time.
4-8.1.4 Examination.
4-8.1.5 Air Vents.
4-8.2 Pneumatic Tests
4-8.2.1 Limitations.
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
108<\/td>\n4-8.2.2 Test Medium.
4-8.2.3 Test Pressure.
4-8.2.4 Preliminary Test.
4-8.2.5 Application of Pressure.
4-8.2.6 Holding Time.
4-8.3 Leak Testing
4-9 SYSTEMS
4-9.1 System Design Requirements
4-9.2 Pressurization and Depressurization Systems
4-9.2.1 Pressurization and Depressurization Rates.
4-9.2.2 Ventilation Rates.
4-9.2.3 Stored Gas Reserves.
4-9.2.4 Exhaust Inlet Protection. <\/td>\n<\/tr>\n
109<\/td>\n4-9.2.5 Exhaust Locations.
4-9.2.6 Noise.
4-9.3 Pressure Boundary Valve Requirements
4-9.3.1 Internal Pressure PVHOs.
4-9.3.2 External Pressure PVHOs.
4-9.3.3 Internal and External Pressure PVHOs.
4-9.3.4 External Override.
4-9.3.5 Special Requirements for PVHOs Used for Saturation Service.
4-9.3.6 Flow-Rate-Sensitive Valves.
4-9.3.7 Remotely Operated Stop Valves.
4-9.4 Depth Gauges
4-9.4.1 Quantity and Location
4-9.4.2 Calibration.
4-9.4.3 Piping.
4-9.4.4 Valve Arrangements. <\/td>\n<\/tr>\n
110<\/td>\n4-9.5 Pressure Gauges Other Than Depth Gauges
4-9.6 Breathing Gas Systems
4-9.6.1 Breathing Gas Outlets.
4-9.6.2 Redundancy of Breathing Gas Supply.
4-9.6.3 Stored Gas Reserves.
4-9.6.4 Multiple Gases.
4-9.6.5 Labeling of Breathing Gas Outlets.
4-9.6.6 Separation of Breathing Gases.
4-9.6.7 Pressure Control Valves in Demand Breathing Systems.
4-9.7 Pressure Control Valves
4-9.7.1 Performance Characteristics.
4-9.7.2 Seats.
4-9.7.3 Filters.
4-9.7.4 Gauges.
4-9.7.5 Bypass Requirements.
4-9.7.6 Pressure Control Valves Used in Demand Breathing Systems <\/td>\n<\/tr>\n
111<\/td>\n4-9.8 Pressure Relief Requirements
4-9.8.1 Overpressure Relief
4-9.8.2 Underpressure Relief
4-9.8.3 Rupture Disks.
4-9.8.4 Division Valves.
4-9.8.5 Pressure-Reducing Valves.
4-9.8.6 Bypass Valves.
4-9.8.7 Stop Valves. <\/td>\n<\/tr>\n
112<\/td>\n4-9.8.8 Exhausts From Relief Devices
4-9.9 Color Coding
4-9.9.1 Consistent Color Codes.
4-9.9.2 Owner’s Responsibility.
4-9.10 Labeling
4-9.10.1 Piping and Gas Storage Vessels.
4-9.10.2 Critical Components.
4-9.10.3 Panel-Mounted Components.
4-9.11 Soft Goods
4-9.11.1 Breathing Gas Systems.
4-9.11.2 Other Systems.
4-9.12 Lubricants and Sealants
4-9.13 Cleaning Requirements
4-9.13.1 Oxygen and Breathing Gas Systems.
4-9.13.2 Components Located Inside PVHOs.
4-9.13.3 Prohibited Cleaning Materials.
4-9.14 Off-Gassing Test for Hoses Used for Breathing Gas Service
4-9.14.1 Background.
4-9.14.2 Procedure <\/td>\n<\/tr>\n
113<\/td>\n4-9.14.3
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
Table 4-9.14.2-1 Maximum Allowable Concentration of Hydrocarbons in Air Passing Through Hose <\/td>\n<\/tr>\n
114<\/td>\nSection 5 Medical Hyperbaric Systems
5-1 GENERAL
5-1.1 Scope
5-1.2 User’s Design Specification
5-1.3 Documentation
5-1.4 Windows
5-1.5 Quick-Actuating Closures
5-1.6 Personnel Entry Lock
5-1.7 Penetrations
5-1.8 Personnel Egress
5-2 PVHO SYSTEM DESIGN
5-3 GAS SYSTEMS
5-3.1 Gas Storage Requirements <\/td>\n<\/tr>\n
115<\/td>\n5-3.2 Breathing Devices
5-3.3 Breathing 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
5-5.2 Temperature
5-5.2.1 Multiplace Chambers.
5-5.2.2 Monoplace Chambers.
5-5.3 Humidity
5-5.4 Contaminants
5-5.5 Lighting
5-5.5.1 External Lighting.
5-5.5.2 Emergency Lighting.
5-5.6 External Heat Sources
5-5.7 Access to Emergency Equipment
5-5.8 Suction Systems
5-5.9 Accidental Depressurization <\/td>\n<\/tr>\n
116<\/td>\nSection 6 Diving Systems
6-1 GENERAL
6-1.1 Scope
6-1.1.1
6-1.1.2
6-1.2 User’s Design Specification
6-1.3 Design Certification
6-1.4 Documentation <\/td>\n<\/tr>\n
117<\/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
6-2.8.1
6-2.8.2 <\/td>\n<\/tr>\n
118<\/td>\n6-2.8.3
6-2.8.4
6-2.9 Lubricants and Sealants
6-2.10 Fire Safety
6-2.11 Fire Suppression
6-2.12 Material Toxicity (Including Paints)
6-2.13 Electrical
6-2.14 Gas Storage Cylinders and Volume Tanks
6-2.14.1 Gas Storage Cylinders.
6-2.14.2 Volume Tanks. <\/td>\n<\/tr>\n
119<\/td>\n6-3 PRESSURE BOUNDARY
6-3.1 Personnel Access Doors\/Hatches
6-3.2 Medical\/Service Locks
6-3.3 Closures
6-3.4 Trunks and Tunnels
6-3.5 Viewports
6-3.6 Lighting
6-3.6.1 Light Level.
6-3.6.2 Lighting Devices.
6-3.7 Service Penetrators <\/td>\n<\/tr>\n
120<\/td>\n6-3.8 Electrical Penetrators
6-3.9 Fiber-Optic Penetrators
6-4 SYSTEMS
6-4.1 Handling Systems
6-4.1.1 General.
6-4.1.2 Design.
6-4.1.3 Test and Trials.
6-4.2 Communication Systems
6-4.2.1
6-4.2.2
6-4.2.3 <\/td>\n<\/tr>\n
121<\/td>\n6-4.3 Sanitary Systems
6-4.3.1
6-4.3.2
6-4.3.3
6-4.3.4
6-4.4 Electrical Systems
6-4.4.1 General.
6-4.4.2 Power Supplies
6-4.4.2.1 General.
6-4.4.2.2 Main Power.
6-4.4.2.3 Emergency Power.
6-4.4.2.4 Reserve Power.
6-4.4.3 Distribution
6-4.4.3.1 General. <\/td>\n<\/tr>\n
122<\/td>\n6-4.4.3.2 Voltage.
6-4.4.3.3 Ground Detectors.
6-4.4.3.4 Cables and Wiring.
6-4.4.3.5 Cable Separation.
6-4.4.3.6 Positive and Negative Conductors.
6-4.4.3.7 Cables Subjected to External Pressure.
6-4.4.4 Circuit Protection
6-4.4.4.1 Circuit Protection Devices.
6-4.4.4.2 Pressure Boundary Power Penetrations.
6-4.4.5 Battery Compartments
6-4.4.5.1 Sources of Ignition.
6-4.4.5.2 Hydrogen Levels.
6-4.4.5.3 Electrical Equipment.
6-4.5 Emergency Evacuation Systems
6-4.5.1 General.
6-4.5.2 Emergency Evacuation System User Requirements
6-4.5.2.1 <\/td>\n<\/tr>\n
123<\/td>\n6-4.5.2.2 <\/td>\n<\/tr>\n
124<\/td>\n6-4.5.3 Emergency Evacuation Life-Support Control System.
6-4.5.4 Testing
6-4.5.4.1
6-4.5.4.2
6-4.5.4.3
6-4.5.4.4
6-4.5.4.5
Fig. 6-4.5.2.2-1 Placement and Design of Markings of Hyperbaric Rescue Systems Designed to Float in Water
Fig. 6-4.5.2.2-2 Markings of Hyperbaric Rescue Systems Designed to Float in Water <\/td>\n<\/tr>\n
125<\/td>\n6-4.5.4.6
6-4.5.4.7
6-4.6 Emergency Recovery of Diving Bells
6-4.6.1 General.
6-4.6.2 Design.
6-4.6.3 Negative Buoyancy Diving Bells.
6-4.6.4 Positive Buoyancy Diving Bells.
6-4.6.5 Functional Testing.
6-5 TESTING
6-6 QUICK-ACTING CLOSURES FOR DIVING BELLS AND EMERGENCY EVACUATION SYSTEMS
6-6.1 General
6-6.2 Design <\/td>\n<\/tr>\n
126<\/td>\n6-6.3 Testing <\/td>\n<\/tr>\n
127<\/td>\nSection 7 Submersibles
7-1 GENERAL
7-1.1 Scope
7-1.2 General Requirements
7-1.2.1 Single Failure.
7-1.2.2 Operating Conditions.
7-1.3 User’s Design Specification
7-1.4 Design Certification
7-1.5 Documentation <\/td>\n<\/tr>\n
128<\/td>\n7-1.6 Operations Manual
7-2 PRESSURE BOUNDARY
7-2.1 General
7-2.2 Hatches
7-2.2.1 Number, Size, and Location.
7-2.2.2 Opening, Closing, and Securing.
7-2.2.3 Equalization.
7-2.3 Viewports
7-2.4 Penetrators
7-2.4.1 Mechanical Penetrators.
7-2.4.2 Hull Shut-Off Valves.
7-2.4.3 Testing Electrical Penetrators. <\/td>\n<\/tr>\n
129<\/td>\n7-2.4.4 Electrical Penetrators.
7-3 PIPING
7-3.1 Exceptions and Alternatives
7-3.1.1 Relieving Devices.
7-3.1.2 User’s Design Specification.
7-3.1.3 Marking.
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
7-4 ELECTRICAL SYSTEMS
7-4.1 General <\/td>\n<\/tr>\n
130<\/td>\n7-4.2 Power Supplies
7-4.2.1 General.
7-4.2.2 Main Power.
7-4.2.3 Emergency Power.
7-4.3 Electrical Cables
7-4.3.1 Protection.
7-4.3.2 Main and Emergency Cables.
7-4.3.3 Positive and Negative Conductors.
7-4.3.4 Pressure Boundary.
7-4.3.5 Grounding.
7-4.3.6 Insulation Material.
7-4.4 Battery Compartments
7-4.4.1 Sources of Ignition.
7-4.4.2 Hydrogen Levels.
7-4.5 Emergency Lighting
7-5 LIFE SUPPORT
7-5.1 General
7-5.2 Main Life Support
7-5.3 Emergency Life Support <\/td>\n<\/tr>\n
131<\/td>\n7-5.4 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
7-7.2 Propulsion
7-7.3 Depth Gauges
7-7.4 Depth Alarm
7-7.5 Obstacle Avoidance <\/td>\n<\/tr>\n
132<\/td>\n7-7.6 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
7-10.2 Underwater Operation <\/td>\n<\/tr>\n
133<\/td>\n7-10.3 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
7-11.3 Thermal Protection
7-11.4 Rations
7-11.5 Tow Point <\/td>\n<\/tr>\n
134<\/td>\nMANDATORY APPENDIX I REFERENCE CODES, STANDARDS, AND SPECIFICATIONS <\/td>\n<\/tr>\n
136<\/td>\nMANDATORY APPENDIX II DEFINITIONS <\/td>\n<\/tr>\n
142<\/td>\nNONMANDATORY APPENDIX A DESIGN OF SUPPORTS AND LIFTING ATTACHMENTS <\/td>\n<\/tr>\n
143<\/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-3.1 Threaded Couplings
B-3.2 Threaded Insert Couplings
B-4 MATERIALS <\/td>\n<\/tr>\n
144<\/td>\nFig. B-2-1 Acceptable Weld Nozzle Penetrators <\/td>\n<\/tr>\n
145<\/td>\nFig. B-3-1 Acceptable Threads and Inserts <\/td>\n<\/tr>\n
146<\/td>\nTable C-1 U.S. Navy Color Codes
Table C-2 IMO Color Codes
NONMANDTORY APPENDIX C RECOMMENDED PRACTICES FOR COLOR CODING AND LABELING <\/td>\n<\/tr>\n
147<\/td>\nNONMANDATORY APPENDIX D GUIDELINES FOR THE SUBMISSION OF A PVHO CASE FOR THE USE OF NONSTANDARD DESIGNS, MATERIALS, AND CONSTRUCTION
D-1 INTRODUCTION
D-2 GENERAL
D-3 MATERIALS <\/td>\n<\/tr>\n
148<\/td>\nD-4 DESIGN
D-4.1 Design Analysis
D-4.2 Maximum Allowable Working Pressure
D-4.3 Design Certification
D-4.4 Unusual Design Features
D-5 TESTING
D-5.1 Prototype Testing
D-5.1.1 Proof Pressure Test.
D-5.1.2 Extended-Duration Creep-Rupture Testing. <\/td>\n<\/tr>\n
149<\/td>\nD-5.1.2.1
D-5.1.2.2
D-5.1.3 Cyclic Pressure Testing.
D-5.1.4 Other Tests.
D-5.1.5 Statistical Analysis.
D-5.2 Production Proof Pressure Testing
D-6 QUALITY ASSURANCE OVERVIEW BY AN INDEPENDENT THIRD-PARTY AGENT <\/td>\n<\/tr>\n
150<\/td>\nD-7 STATISTICAL ANALYSIS
D-7.1 Method I: Check of Data Set for Normal Distribution 3 less than n less than or equal 50
D-7.2 Method II: MAWP Based on Normally Distributed Proof Test Data <\/td>\n<\/tr>\n
151<\/td>\nTable D-7.1-1 Tabulated Data for Performance of \u201cW-Test\u201d for Normality of Data Set <\/td>\n<\/tr>\n
152<\/td>\nD-7.3 Method III: Nonparametric Determination of MAWP From Proof Tests
D-7.4 Method IV: MAWP Determination Based on Nonfailure Test Pressure <\/td>\n<\/tr>\n
153<\/td>\nNONMANDATORY APPENDIX E GUIDELINES FOR PREPARING A PVHO PERFORMANCE-BASED CASE FOR FLEXIBLE CHAMBERS
E-1 GENERAL REQUIREMENTS
E-1.1 Introduction
E-1.2 Scope
E-1.2.1 Application.
E-1.2.2 Pressure Boundary.
E-1.3 Exclusions
E-1.4 Design Limitations
E-1.5 Design Specification
E-1.5.1 Criteria to Be Specified.
E-1.5.2 Other Codes and Standards. <\/td>\n<\/tr>\n
154<\/td>\nE-1.5.3 Certification of Design Specification.
E-1.6 Manufacturer\u0152s Data Report
E-1.7 Documentation
E-1.7.1 Documentation Provided to the User.
E-1.7.2 Documentation Retained by the Manufacturer for Individual Units.
E-1.7.3 PVHO Design Qualification Documentation.
E-2 DESIGN
E-2.1 General
E-2.2 PVHO Design
E-2.3 Basis of PVHO Design <\/td>\n<\/tr>\n
155<\/td>\nE-2.4 Design Loads
E-2.5 Access Doors, Hatches, and Service Locks
E-2.6 Electrical
E-2.7 Unusual Design Features
E-2.8 Risk Analysis <\/td>\n<\/tr>\n
156<\/td>\nE-2.9 Design Report
E-2.10 Repair Specification
E-3 MATERIALS
E-3.1 General
E-3.1.1 Application.
E-3.1.2 Compliance with Standards.
E-3.1.3 Alternative Material Specification.
E-3.1.4 Material Traceability.
E-3.1.5 Material Test Samples.
E-3.1.6 Supporting Information for Materials. <\/td>\n<\/tr>\n
157<\/td>\nE-3.2 Window Materials
E-3.3 Flammability
E-3.3.1 Flammability Evaluation.
E-3.3.2 Materials Qualified to NFPA 701. <\/td>\n<\/tr>\n
158<\/td>\nFig. A.3.3.14.3 Cook\u2019s Diagram: Atmosphere of Increased Burning Rate
E-3.4 Material Considerations
E-4 QUALITY ASSURANCE PROGRAM
E-4.1 Certification
E-4.2 General <\/td>\n<\/tr>\n
159<\/td>\nE-4.2.1 Organization.
E-4.2.2 Design Control.
E-4.3 Document Control
E-4.4 Procurement Control
E-4.5 Material Control
E-4.6 Process Control
E-4.7 Inspection Control
E-4.8 Test Control
E-4.9 Control of Measuring, Test, and Inspection Equipment <\/td>\n<\/tr>\n
160<\/td>\nE-4.10 Control of Nonconforming Items and Materials
E-4.10.1 Repair of Nonconforming PVHOs.
E-4.11 Quality Assurance Records
E-4.12 Quality Assurance Overview by a Qualified Third Party
E-4.13 Modifications to PVHO Design
E-5 TESTING
E-5.1 Test Requirements
E-5.2 Design Qualification Prototype Testing
E-5.2.1 Burst or Proof Pressure Tests. <\/td>\n<\/tr>\n
161<\/td>\nFig. E-5.2.2.1-1 Number of Test Samples Required for Alternate Creep Test Procedure
E-5.2.2 Extended-Duration Creep-Rupture Testing.
E-5.2.2.1 Test Procedure. <\/td>\n<\/tr>\n
162<\/td>\nE-5.2.2.2 Alternative Test Procedure.
E-5.2.3 Cyclic Design Life.
E-5.2.4 Chronological Design Life.
E-5.2.5 Aging. <\/td>\n<\/tr>\n
163<\/td>\nE-5.2.5.1 Accelerated Chronological Aging.
E-5.2.5.2 Aging due to UV Exposure.
E-5.2.5.3 Other Aging Mechanisms.
E-5.2.5.4 Alternative Approaches.
E-5.2.5.5 Avoiding Aging.
E-5.2.6 Nonmetallic Materials and Toxicity Off-Gas Testing.
E-5.2.7 Leakage and Pressure Drop Tests.
E-5.2.7.1 Maximum Allowable Pressure Drop Rate.
E-5.2.7.2 Pressure Drop Rate Test.
E-5.2.8 Additional Prototype Joint Tests.
E-5.2.9 Folding Tests.
E-5.2.10 Pressurized Drop Tests. <\/td>\n<\/tr>\n
164<\/td>\nFig. E-5.2.5.1-1 Time Versus Test Temperature for Accelerated Aging Test <\/td>\n<\/tr>\n
165<\/td>\nE-5.2.11 Handling Features of Portable and Transportable PVHOs.
E-5.2.12 Other Design Qualification Tests.
E-5.3 Production Testing
E-5.3.1 Proof Pressure Testing.
E-5.3.2 Pressure Drop Rate Testing.
E-5.3.3 Joint Testing.
E-5.4 Testing of PVHO Repairs
E-5.4.1 Prototype Repair Testing.
E-5.4.2 Production Repair Testing. <\/td>\n<\/tr>\n
166<\/td>\nE-6 DOCUMENTATION
E-6.1 General
E-6.2 Owner\u0152s Manual
E-7 MARKING
E-7.1 General
E-7.2 Marking and Attachment of Label <\/td>\n<\/tr>\n
167<\/td>\nE-7.3 Label Information <\/td>\n<\/tr>\n
168<\/td>\nNONMANDATORY APPENDIX F USEFUL REFERENCES <\/td>\n<\/tr>\n
170<\/td>\nASME PVHO-1 CASES <\/td>\n<\/tr>\n
171<\/td>\nPVHO Case 8 Alternative Testing Requirements for Large Subatmospheric Pressure PVHO Chambers <\/td>\n<\/tr>\n
172<\/td>\nPVHO Case 10 Use of Clear Plastic Viewport Retaining Covers in Lieu of Metallic Retaining Rings <\/td>\n<\/tr>\n
173<\/td>\nFig. 10-1 Acceptable Configurations for Clear Viewport Retaining Covers <\/td>\n<\/tr>\n
174<\/td>\nTable 11-1 Maximum Flange-to-Flange Relative Displacement
PVHO Case 11 Use of Nonmetallic Expansion Joint
1 GENERAL
1.1 Requirements
1.2 Standards
2 MATERIALS
2.1 Commercial-Grade Fluoroelastomer <\/td>\n<\/tr>\n
175<\/td>\n2.2 Neoprene N4614
2.3 Neoprene N5157
2.4 Neoprene N8017
2.5 Neoprene N4957
2.6 Polyester DD1500
2.7 Polyester DD1200 <\/td>\n<\/tr>\n
176<\/td>\n2.8 Flange Tie-Down, Steel Cord JZ #5
2.9 Body Rings
3 DESIGN AND MANUFACTURE
3.1 Design
3.2 Requirements
3.3 Design Certification
3.4 Manufacture
4 TESTING <\/td>\n<\/tr>\n
177<\/td>\n4.1 Prototype Testing
4.2 Production Testing
5 QUALITY ASSURANCE PROGRAM
5.1 General
5.2 Organization
5.3 Design Control <\/td>\n<\/tr>\n
178<\/td>\n5.4 Document Control
5.5 Procurement Control
5.6 Material Control
5.7 Process Control
5.8 Inspection Control
5.9 Test Control
5.10 Control of Measuring Test and Inspection Equipment
5.11 Control of Nonconforming Items\/Materials
5.12 Quality Assurance Records
5.13 Standard Repair Planning <\/td>\n<\/tr>\n
179<\/td>\n5.14 Quality Assurance Overview by an Independent Third Party
6 MARKING <\/td>\n<\/tr>\n
180<\/td>\nPVHO-1 Case 11 Form Manufacturer’s Data Report for Pressure Vessels for Human Occupancy <\/td>\n<\/tr>\n
181<\/td>\nPHVO Case 12Use of Nonmetallic Braid-Reinforced Flexible Membrane Vessels Under PVHO-1\u20132012
1 GENERAL <\/td>\n<\/tr>\n
182<\/td>\nFig. 12-1 Typical Configuration <\/td>\n<\/tr>\n
183<\/td>\nTable 12-1
2 MATERIALS
3 DESIGN AND MANUFACTURE
3.1 Design
3.2 Requirements <\/td>\n<\/tr>\n
184<\/td>\nTable 12-2 Structural Nonmetallic Materials of Construction \u2014 Pressure Tube
Table 12-3 Test Procedures and\/or Specifications Listed in Table 12-2 or Referred to in Case 12 <\/td>\n<\/tr>\n
185<\/td>\n3.3 Design Certification
3.4 Manufacture
4 TESTING
4.1 Prototype Testing <\/td>\n<\/tr>\n
186<\/td>\n4.2 Production Testing
5 QUALITY ASSURANCE
5.1 General
5.2 Organization
5.3 Design Control
5.4 Document Control
5.5 Procurement Control <\/td>\n<\/tr>\n
187<\/td>\n5.6 Material Control
5.7 Process Control
5.8 Inspection Control
5.9 Test Control
5.10 Control of Measuring Test and Inspection Equipment
5.11 Control of Nonconforming Items\/Materials
5.12 Quality Assurance Records
5.13 Standard Repair Planning
5.14 Quality Assurance Overview by an Independent Third Party <\/td>\n<\/tr>\n
188<\/td>\nFig. 12-2 Example Marking of Case 12 PVHO
Fig. 12-3 Additional Markings for Case 12 PVHOs
6 MARKING <\/td>\n<\/tr>\n
189<\/td>\nPVHO-1 Case 12 Form Manufacturer’s Data Report for Pressure Vessels for Human Occupancy <\/td>\n<\/tr>\n
192<\/td>\nPHVO-1 Case 15 Use of Polyester-Jacketed, Aliphatic-Coated Bladder, Zippered Closure Cylindrical Vessels in the Construction of PVHOs Under PVHO-1\u20132012
1 GENERAL
1.1 Exclusions
1.2 User’s Design Specification <\/td>\n<\/tr>\n
193<\/td>\nFig. 15-1 Typical PVHO Configuration <\/td>\n<\/tr>\n
195<\/td>\nFig. 15-2 Window Shield
2 MATERIALS
3 DESIGN AND FABRICATION
3.1 Design Analysis
3.2 Requirements <\/td>\n<\/tr>\n
196<\/td>\nTable 15-1 PVHO Materials of Construction <\/td>\n<\/tr>\n
197<\/td>\n3.3 Design Certification
3.4 Fabrication
4 TESTING
4.1 Prototype Testing <\/td>\n<\/tr>\n
198<\/td>\n4.2 Production Testing
5 QUALITY ASSURANCE PROGRAM
5.1 General
5.2 Organization <\/td>\n<\/tr>\n
199<\/td>\n5.3 Design Control
5.4 Document Control
5.5 Procurement Control
5.6 Material Control
5.7 Process Control
5.8 Inspection Control
5.9 Test Control
5.10 Control of Measuring Test and Inspection Equipment
5.11 Control of Nonconforming Items\/Materials
5.12 Quality Assurance Records <\/td>\n<\/tr>\n
200<\/td>\n5.13 Standard Repair Planning
5.14 Quality Assurance Overview by an Independent Third Party
6 MARKING
7 DOCUMENTATION <\/td>\n<\/tr>\n
201<\/td>\nPVHO-1 Case 15 Form Manufacturer’s Data Report for Pressure Vessels for Human Occupancy <\/td>\n<\/tr>\n
202<\/td>\nPHVO-1 Case 16 Use of Nylon-Jacketed, Aliphatic-Coated Bladder, Zippered Closure Cylindrical Vessels in the Constructionof PVHOs Under PVHO-1\u20132012
1 GENERAL
1.1 Exclusions
1.2 User’s Design Specification <\/td>\n<\/tr>\n
203<\/td>\nFig. 15T38145 PVHO Chamber <\/td>\n<\/tr>\n
204<\/td>\n2 MATERIALS
3 DESIGN AND FABRICATION
3.1 Design Analysis
3.2 Requirements
3.3 Design Certification <\/td>\n<\/tr>\n
205<\/td>\nTable 16-1 PVHO Materials of Construction <\/td>\n<\/tr>\n
206<\/td>\n3.4 Fabrication
4 TESTING
4.1 Prototype Testing <\/td>\n<\/tr>\n
207<\/td>\n4.2 Production Testing
5 QUALITY ASSURANCE PROGRAM (QAP)
5.1 General
5.2 Organization
5.3 Design Control
5.4 Document Control <\/td>\n<\/tr>\n
208<\/td>\n5.5 Procurement Control
5.6 Material Control
5.7 Process Control
5.8 Inspection Control
5.9 Test Control
5.10 Control of Measuring Test and Inspection Equipment
5.11 Control of Nonconforming Items\/Materials
5.12 Quality Assurance Records
5.13 Standard Repair Planning <\/td>\n<\/tr>\n
209<\/td>\n5.14 Quality Assurance Overview by an Independent Third Party
6 MARKING
7 DOCUMENTATION <\/td>\n<\/tr>\n
210<\/td>\nPVHO-1 Case 16 Form Manufacturer’s Data Report for Pressure Vessels for Human Occupancy <\/td>\n<\/tr>\n
211<\/td>\nPHVO Case 17 Allow for Markings on Windows to Be Placed on Locations Other Than Those Permitted Under Para. 2-6.4 of PVHO-1\u20132012 <\/td>\n<\/tr>\n
212<\/td>\nPHVO-1 Case 18 Use of Nonmetallic Braid-Reinforced Flexible Membrane Multiple-Occupancy Vessels Under PVHO-1\u20132012
1 GENERAL <\/td>\n<\/tr>\n
213<\/td>\nTable 18-1 Plan View of Configurations Covered Under This Case <\/td>\n<\/tr>\n
214<\/td>\nFig. 18-1 Typical Cofiguration of PVHOs <\/td>\n<\/tr>\n
215<\/td>\n1.1 Additional Parameters
1.2 Exclusions
2 MATERIALS
3 DESIGN AND MANUFACTURE
3.1 Design <\/td>\n<\/tr>\n
216<\/td>\nTable 18-2 Structured Nonmetallic Materials of Construction <\/td>\n<\/tr>\n
217<\/td>\nTable 18-3 Test Procedures and\/or Specifications Listed in Table 18-2 <\/td>\n<\/tr>\n
218<\/td>\n3.2 Requirements
3.3 Design Certification
3.4 Manufacture
4 TESTING <\/td>\n<\/tr>\n
219<\/td>\n4.1 Prototype Testing
4.2 Production Test <\/td>\n<\/tr>\n
220<\/td>\nFig. 18-2 Extended-Duration Creep-Rupture Test
4.3 In-Process Tests
5 QUALITY ASSURANCE
5.1 General
5.2 Organization
5.3 Design Control
5.4 Document Control <\/td>\n<\/tr>\n
221<\/td>\n5.5 Procurement Control
5.6 Material Control
5.7 Process Control
5.8 Inspection Control
5.9 Test Control
5.10 Control of Measuring Test and Inspection Equipment
5.11 Control of Nonconforming Items and Materials
5.12 Quality Assurance Records
5.13 Standard Repair Planning <\/td>\n<\/tr>\n
222<\/td>\n5.14 Quality Assurance Overview by an Independent Third Party
6 MARKING <\/td>\n<\/tr>\n
223<\/td>\nFig. 18-3 Example Marking of Case 18 PVHO
Fig. 18-4 Additional Markings for Case 18 PVHOs <\/td>\n<\/tr>\n
224<\/td>\nPVHO-1 Case 18 Form Manufacturer’s Data Report for Pressure Vessels for Human Occupancy <\/td>\n<\/tr>\n
225<\/td>\nPHVO Case 19 Multiple Temperature-Pressure Ratings for PVHO Windows <\/td>\n<\/tr>\n
226<\/td>\nPHVO-1 Case 20 Use of Nylon-Jacketed, Aliphatic-Coated Bladder, Zippered Closure Cylindrical Vessels in the Construction of PVHOs Under PVHO-1\u20132012
1 GENERAL
1.1 Exclusions
1.2 User’s Design Specification <\/td>\n<\/tr>\n
227<\/td>\nFig. 15C37195 Final Assembly of 27-in. 1.5 ATA Chamber <\/td>\n<\/tr>\n
229<\/td>\n2 MATERIALS
3 DESIGN AND FABRICATION <\/td>\n<\/tr>\n
230<\/td>\nTable 20-1 PVHO Materials of Construction <\/td>\n<\/tr>\n
231<\/td>\n3.1 Design Analysis
3.2 Design Risk Analysis
3.3 Requirements
3.4 Design Certification
3.5 Fabrication <\/td>\n<\/tr>\n
232<\/td>\n4 TESTING
4.1 Prototype Testing <\/td>\n<\/tr>\n
233<\/td>\nFig. 20-1 Creep Test Acceptance Criteria
4.2 Production Testing <\/td>\n<\/tr>\n
234<\/td>\n5 QUALITY ASSURANCE PROGRAM
5.1 General
5.2 Organization
5.3 Design Control
5.4 Document Control
5.5 Procurement Control
5.6 Material Control
5.7 Process Control
5.8 Inspection Control
5.9 Test Control
5.10 Control of Measuring Test and Inspection Equipment <\/td>\n<\/tr>\n
235<\/td>\n5.11 Control of Nonconforming Items and Materials
5.12 Quality Assurance Records
5.13 Standard Repair Planning
5.14 Quality Assurance Overview by an Independent Third Party
6 MARKING <\/td>\n<\/tr>\n
236<\/td>\n7 DOCUMENTATION <\/td>\n<\/tr>\n
237<\/td>\nPVHO-1 Case 20 Form Manufacturer’s Data Report for Pressure Vessels for Human Occupancy <\/td>\n<\/tr>\n
238<\/td>\nPHVO-1 Case 21 Use of a Transportable Flexible Coated Aramid Conical Vessel as a PVHO Under PVHO-1\u20132012
1 GENERAL
1.1 Description of the PVHO
1.2 General Requirements <\/td>\n<\/tr>\n
239<\/td>\nFig. 21-1 Main Parts of the Pressure Vessel
Fig. 21-2 PVHO <\/td>\n<\/tr>\n
240<\/td>\nFig. 21-3 Packed PVHO
2 MATERIALS
2.1 Material Requirements
2.2 Materials Properties <\/td>\n<\/tr>\n
241<\/td>\nTable 21-1 Required Mechanical Properties of Shell Materials
Table 21-2 Required Mechanical Properties of Rigid Composite Parts Materials <\/td>\n<\/tr>\n
242<\/td>\nTable 21-3 ASTM Test Methods
2.3 Summary of ASTM Test Methods
3 DESIGN
3.1 Applicable Standards
3.2 Design Analysis
3.3 Design Requirements <\/td>\n<\/tr>\n
243<\/td>\nFig. 21-4 Closing System and Large Window Assembly Details
Table 21-4 ASME PVHO-1 Design Exclusions <\/td>\n<\/tr>\n
244<\/td>\nFig. 21-5 Small Window Assembly Details
3.4 Design Certification <\/td>\n<\/tr>\n
245<\/td>\nFig. 21-6 Closing System Actuation Details
4 MANUFACTURING
4.1 Qualification
4.2 Methods of Fabrication <\/td>\n<\/tr>\n
246<\/td>\n4.3 Manufacturing Procedures
4.4 Control of Raw Materials
4.4.1 Resin Systems.
4.4.2 Fiber Systems.
4.4.3 Core Materials.
4.5 In-Process Controls
4.5.1 Winding.
4.5.2 Infusion Molding (Contact Molding).
4.5.3 Adhesive Bonding and Casting.
4.6 Parts Inspections
4.6.1 Resin Cure. <\/td>\n<\/tr>\n
247<\/td>\n4.6.2 Laminate Mechanical Properties.
4.6.3 Weight and Fiber-Resin Ratio.
4.6.4 Visual Inspection.
4.6.5 Secondary Bonding.
4.6.6 Wall Thickness Checks.
5 TESTING
5.1 Prototype Testing
5.1.1 Proof Pressure Test.
5.1.2 Cyclic Hydrostatic Pressure Test.
5.1.3 Extended-Duration (Creep-Rupture) Test. <\/td>\n<\/tr>\n
248<\/td>\nFig. 21-7 Creep-Rupture Test Acceptance Criteria
Table 21-5 Creep Test Options
5.1.4 Cold Storage Test.
5.1.5 Cyclic Folding Test. <\/td>\n<\/tr>\n
249<\/td>\n5.1.6 Off-Gassing Toxicity Test.
5.1.7 Flammability Tests.
5.1.8 Puncture Test.
5.1.9 Lighting Heat Test.
5.1.10 Cyclic Closing System Wear Test.
5.2 Production Testing of Assembled Vessel
6 QUALITY ASSURANCE PROGRAM
6.1 General <\/td>\n<\/tr>\n
250<\/td>\n6.2 Organization
6.3 Design Control
6.4 Document Control
6.5 Procurement Control
6.6 Material Control
6.7 Process Control
6.8 Inspection Control
6.9 Test Control <\/td>\n<\/tr>\n
251<\/td>\n6.10 Control of Measuring Test and Inspection Equipment
6.11 Control of Nonconforming Items and Materials
6.12 Quality Assurance Records
6.13 Quality Assurance Overview by an Independent Third Party
6.14 Risk Analysis
7 MARKING AND REPORT
7.1 Marking <\/td>\n<\/tr>\n
252<\/td>\n7.2 Report <\/td>\n<\/tr>\n
253<\/td>\nPVHO-1 Case 21 Form Manufacturer’s Data Report for Pressure Vessels for Human Occupancy <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

ASME PVHO-1 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>\n2016<\/td>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":169454,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[2643],"product_tag":[],"class_list":{"0":"post-169453","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\/169453","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\/169454"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=169453"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=169453"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=169453"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}