ASME PVHO 2 2019
$98.04
ASME PVHO-2-2019 Safety Standard for Pressure Vessels for Human Occupancy: In-Service Guidelines
| Published By | Publication Date | Number of Pages |
| ASME | 2019 | 61 |
This Standard provides technical criteria and guidelines for the operation and maintenance of PVHOs and PVHO systems that were designed, constructed, tested and certified in accordance with ASME PVHO-1. (b) This Standard provides technical criteria for the user to establish the serviceability of a PVHO acrylic window under its specific environmental service conditions. Windows in protected environments as well as those in severe environments are addressed. Judicious use of this Standard will allow the user and/or the jurisdictional authority to determine when a PVHO acrylic window requires replacement.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 4 | CONTENTS |
| 6 | FOREWORD |
| 7 | COMMITTEE ROSTER |
| 10 | CORRESPONDENCE WITH THE PVHO COMMITTEE |
| 12 | ASME PVHO-2–2019 SUMMARY OF CHANGES |
| 14 | Section 1 General 1-1 INTRODUCTION AND SCOPE 1-2 RESPONSIBILITIES AND JURISDICTIONAL CONSIDERATIONS 1-2.1 User’s Responsibilities 1-2.2 Jurisdictional Considerations 1-3 IN-SERVICE EVALUATIONS, REPAIRS, AND MODIFICATION OF PVHOs 1-3.1 In-Service PVHO Evaluation and Testing 1-3.2 PVHO Windows and Viewports |
| 15 | 1-3.3 Pressure Boundary (Except for Windows) 1-3.4 Pressure Gauge Calibration 1-4 PVHO AND PVHO SYSTEMS DOCUMENTATION 1-5 OWNER’S MANUAL 1-5.1 General 1-5.2 Component Description |
| 16 | 1-5.3 Storage of Equipment 1-6 MAINTENANCE REQUIREMENTS 1-6.1 General 1-7 CHECKLISTS AND LOGS 1-7.1 Checklists 1-7.2 Operating Logs |
| 17 | 1-7.3 Maintenance Logs |
| 18 | Section 2 Viewports 2-1 RESPONSIBILITIES 2-1.1 Window Designer’s Responsibility 2-1.2 Window Fabricator’s Responsibility 2-1.3 Window User’s Responsibility 2-1.4 Quality Assurance 2-2 FACTORS AFFECTING SERVICE LIFE 2-2.1 General 2-2.2 Physical Abuse Factors 2-2.3 Temperature Abuse Factors |
| 19 | 2-2.4 Chemical Abuse Factors 2-2.5 Radiation Exposure 2-2.6 Cycles as Related to Above Factors 2-2.7 Additional Service Factors 2-3 HANDLING OF PVHO WINDOWS 2-3.1 Cleaning and Polishing 2-3.2 Window Storage |
| 20 | 2-4 OPERATIONAL AND MAINTENANCE INSPECTIONS OF PVHO VIEWPORTS 2-4.1 General 2-4.2 Operational Viewport Inspection 2-4.3 Maintenance Viewport Inspection 2-4.4 Limitations on Service Life |
| 21 | 2-4.5 Reinstallation of PVHO Windows 2-4.6 Additional Viewport Refurbishment Considerations 2-4.7 Instrumentation and Tools 2-4.8 Documentation and Record Retention 2-4.9 Qualification of Window Inspectors |
| 22 | 2-5 CATEGORIES OF DAMAGE 2-5.1 Superficial (Does Not Require Action) 2-5.2 Significant (Requires Action) 2-5.3 Nonrepairable (Requires Replacement) 2-6 REPAIR OF DAMAGED PVHO WINDOWS 2-6.1 General 2-6.2 Window Damage Assessment |
| 23 | 2-6.3 Repair Requirements for Spherical Windows 2-6.4 Annealing Severely Damaged Windows 2-6.5 Thickness Check |
| 24 | 2-6.6 Nonconformance 2-6.7 Post-Repair Annealing and Pressure Testing 2-6.8 Marking of Repaired Windows 2-6.9 Pressure Test of Repaired Windows 2-7 MECHANICAL PROPERTY TESTING 2-7.1 General 2-7.2 Validation of Minimum Acceptable Properties |
| 25 | 2-7.3 Evaluation of Data for Additional Years of Service Life 2-7.4 Commensurate Extension of Cyclic Service Life 2-7.5 Additional Notes to Subsection 2-7 |
| 26 | 2-8 TESTING REQUIREMENTS FOR INCREASING THE 40,000-hr DESIGN LIFE |
| 27 | Tables Table 2-4.1-1 Periodic Inspection Requirements |
| 28 | Table 2-4.1.1-1 Limits for Blemishes or Flaws on Standard Window Geometry Surfaces |
| 30 | Table 2-4.1.1-2 Limits for Blemishes or Flaws on All Other Standard Window Geometry Surfaces |
| 31 | Table 2-4.1.1-3 Limits on Chipping of Sharp Edges on Standard Window Geometries Table 2-4.3-1 Maximum Intervals for Maintenance Viewport Inspection Table 2-4.3-2 Maximum Intervals for Refurbishment |
| 32 | Forms Form VM-1 Viewport Inspection |
| 33 | Form VM-2 Acrylic Window Repair Certification for Severely Damaged Windows |
| 35 | Form VM-3 Acrylic Window Repair Certification for Slightly Damaged Windows Repaired by the User (or the User’s Authorized Agent) |
| 36 | Form VT-1 Pressure Testing Report for Increasing Window Service Life Beyond the 40,000-hr Design Life |
| 37 | MANDATORY APPENDIX I DEFINITIONS |
| 40 | MANDATORY APPENDIX II REFERENCE STANDARDS AND SPECIFICATIONS |
| 41 | MANDATORY APPENDIX III QUALITY ASSURANCE PROGRAM FOR REPAIR OF SEVERELY DAMAGED WINDOWS III-1 GENERAL III-2 ORGANIZATION III-3 QUALITY ASSURANCE PROGRAM III-4 QUALITY ASSURANCE MANUAL III-5 DRAWING, DESIGN, AND SPECIFICATION CONTROL III-6 PROCUREMENT CONTROL |
| 42 | III-7 IDENTIFICATION AND CONTROL OF ITEMS III-8 CONTROL OF PROCESSES III-9 INSPECTION III-10 TEST CONTROL III-11 HANDLING, STORAGE, AND SHIPPING III-12 DOCUMENTATION AND STATUS OF TEST ACTIVITIES III-13 CORRECTIVE ACTION III-14 QUALITY ASSURANCE RECORDS |
| 43 | III-15 QUALITY ASSURANCE AUDITS III-16 CONFORMITY |
| 44 | MANDATORY APPENDIX IV ADDITIONAL WINDOW REPAIR REQUIREMENTS AND FORMS IV-1 WINDOW REPAIR TEST REQUIREMENTS IV-2 POST-REPAIR PRESSURE TESTING REQUIREMENT |
| 45 | Table IV-1-1 Specified Values of Physical Properties for Spot Casting Repairs (To Be Verified by Testing of Specimens Taken From Test Castings of the Same Slurry Batch Used in Repair) IV-3 TEST REJECTION CRITERIA IV-4 ALTERNATIVE TEST IV-5 TEST CERTIFICATION FORM |
| 46 | Table IV-1-2(a) Annealing Schedule for Acrylic Windows Part A: Minimum Heating Times for Elevated Temperature Annealing of Acrylic |
| 47 | Table IV-1-2(b) Annealing Schedule for Acrylic Windows Part B: Maximum Cooling Rates for Acrylic Subjected to Elevated Annealing Temperatures |
| 48 | Form IV-1-1 Material Testing Certification for Repair by Spot Casting |
| 49 | Form IV-1-2 Annealing Process Certification |
| 50 | Form IV-5-1 Pressure Testing Certification |
| 51 | MANDATORY APPENDIX V PARTIAL LIST OF HARMFUL SUBSTANCES ANDACCEPTABLE PRODUCTS V-1 SCOPE V-2 HARMFUL SUBSTANCES V-3 ACCEPTABLE CLEANERS, BIOCIDES, AND POLISHES |
| 52 | V-4 ACCEPTABLE LUBRICANTS V-5 ACCEPTABLE SEAL AND GASKET ADHESIVES |
| 53 | MANDATORY APPENDIX VI MECHANICAL TESTING COMPUTATIONS AND FORMS VI-1 STANDARD DEVIATION VI-2 STANDARD ERROR VI-3 CONFIDENCE INTERVAL (CI) VI-4 CRITERIA FOR CENSORING OF SUSPECT DATA VI-5 COMPUTATIONAL EXAMPLES VI-6 EVALUATION |
| 54 | Table VI-6-1 Example Evaluation — Mandatory Appendix VI |
| 55 | Form VI-1 Material Testing Results for Continued Service |
| 56 | Form VI-2 Material Testing Evaluation for Continued Service |
| 57 | NONMANDATORY APPENDIX A CHECKLISTS AND LOGS FOR PVHO OPERATION |
| 58 | NONMANDATORY APPENDIX B OPERATION OF SUBMERSIBLE CRAFT B-1 GENERAL B-2 CHAIN OF COMMAND B-3 OPERATION, PREPARATION, AND PLANNING |
| 59 | B-4 SUBMERSIBLE CRAFT PILOT B-5 QUALIFIED PERSONNEL B-6 CERTIFICATE OF COMPETENCE |
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