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ASME PVHO 2 2016

ASME PVHO 2 2016

$98.04

ASME PVHO-2 – 2016: Safety Standard for Pressure Vessels for Human Occupancy: In-Service Guidelines

Published By Publication Date Number of Pages
ASME 2016 62
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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
5 FOREWORD
6 COMMITTEE ROSTER
9 CORRESPONDENCE WITH THE PVHO COMMITTEE
10 SUMMARY OF CHANGES
12 Section 1 General
1-1 INTRODUCTION AND SCOPE
1-2 RESPONSIBILITIES AND JURISDICTIONAL CONSIDERATIONS
1-2.1 UserŒs 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
13 1-3.2 PVHO Windows and Viewports
1-3.3 Pressure Boundary Except for Windows
1-4 PVHO AND PVHO SYSTEMS DOCUMENTATION
1-5 OWNERŒS MANUAL
1-5.1 General
1-5.2 Component Description
1-5.3 Storage of Equipment
14 1-6 MAINTENANCE REQUIREMENTS
1-6.1 General
15 Section 2 Viewports
2-1 RESPONSIBILITIES
2-1.1 Window DesignerŒs Responsibility
2-1.2 Window FabricatorŒs Responsibility
2-1.3 Window UserŒs 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
2-2.3.1 Heat Sources.
2-2.3.2 Improper Operation of Lighting Equipment.
2-2.4 Chemical Abuse Factors
16 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
2-3.1.1 Correct Methods.
2-3.1.2 Incorrect Methods.
2-3.2 Window Storage
17 2-4 OPERATIONAL AND MAINTENANCE INSPECTIONS OF PVHO VIEWPORTS
2-4.1 General
2-4.1.1 Scope.
2-4.2 Operational Viewport Inspection
2-4.2.1 Operational Viewport Inspection Schedule.
2-4.3 Maintenance Viewport Inspection
Tables
Table 2-4.1-1 Periodic Inspection Requirements
18 Table 2-4.1-2 Limits for Blemishes or Flaws on Window Surfaces
20 Table 2-4.1-3 Limits for Blemishes or Flaws on All Other Window Surfaces
21 Table 2-4.1-4 Limits on Chipping of Sharp Edges on Windows
22 2-4.3.1 Maintenance Viewport Inspection Schedule.
Table 2-4.3-1 Maximum Intervals for Maintenance Viewport Inspection
Table 2-4.3-2 Maximum Intervals for Refurbishment
23 2-4.4 Limitations on Service Life
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
24 2-4.9 Qualification of Window Inspectors
2-4.9.1 Procedure and Levels of Qualification.
2-4.9.2 Use of Third Parties.
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
25 2-6.2.1 Slightly Damaged Windows
2-6.2.1.1 Field Repair of Slightly Damaged Windows.
2-6.2.2 Severely Damaged Windows.
2-6.2.3 Repair of Severely Damaged Windows.
2-6.3 Repair Requirements for Spherical Windows
26 2-6.4 Annealing Severely Damaged Windows
2-6.5 Thickness Check
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
27 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
29 Forms
PVHO-2 Form VP-1 Viewport Inspection
30 PVHO-2 Form VP-2 Acrylic Window Repair Certification for Windows Repaired by the User
31 PVHO-2 Form VP-3 Acrylic Window Repair Certification for Severely Damaged Windows
34 MANDATORY APPENDIX I DEFINITIONS
36 MANDATORY APPENDIX II REFERENCE STANDARDS AND SPECIFICATIONS
37 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
38 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
39 III-15 QUALITY ASSURANCE AUDITS
III-16 CONFORMITY
40 MANDATORY APPENDIX IV ADDITIONAL WINDOW REPAIR REQUIREMENTS AND FORMS
IV-1 WINDOW REPAIR TEST REQUIREMENTS
IV-2 POST-REPAIR PRESSURE TESTING REQUIREMENT
41 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)
Table IV-1-2(a) Annealing Schedule for Acrylic Windows Part A: Minimum Heating Times for Elevated Temperature Annealing of Acrylic
42 Table IV-1-2(b) Annealing Schedule for Acrylic Windows Part B: Maximum Cooling Rates for Acrylic Subjected to Elevated Annealing Temperatures
IV-3 TEST REJECTION CRITERIA
IV-4 ALTERNATIVE TEST
IV-5 TEST CERTIFICATION FORM
43 PVHO-2 Form IV-1-1 Material Testing Certification for Repair by Spot Casting
44 PVHO-2 Form IV-1-2 Annealing Process Certification
45 PVHO-2 Form IV-5-1 Pressure Testing Certification
46 MANDATORY APPENDIX V PARTIAL LIST OF HARMFUL SUBSTANCES AND ACCEPTABLE PRODUCTS
V-1 SCOPE
V-2 HARMFUL SUBSTANCES
V-3 ACCEPTABLE CLEANERS, BIOCIDES, AND POLISHES
V-3.1 Acceptable Cleaners
47 V-3.2 Acceptable Biocides
V-3.3 Acceptable Polishes
V-4 ACCEPTABLE LUBRICANTS
V-5 ACCEPTABLE SEAL AND GASKET ADHESIVES
48 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
49 Table VI-6-1 Example Evaluation — Externally Pressurized Manned Submersible After 10 Years of Service
50 PVHO-2 Form VI-1 Material Testing Certification for Continued Service
51 PVHO-2 Form VI-2 Material Testing Evaluation for Continued Service
52 NONMANDATORY APPENDIX A CHECKLISTS AND LOGS FOR PVHO OPERATION
A-1 INTRODUCTION
A-2 CHECKLISTS
A-2.1 Preoperation Checklists
A-2.2 Post-Operation Checklists
A-2.3 Prestorage Checklists
A-3 OPERATING LOGS
A-4 MAINTENANCE LOGS
53 NONMANDATORY APPENDIX B OPERATION OF SUBMERSIBLE CRAFT
B-1 GENERAL
B-1.1
B-1.2
B-1.3
B-2 CHAIN OF COMMAND
B-2.1
B-3 OPERATION, PREPARATION, AND PLANNING
B-3.1 Operating Manual
B-3.2 Emergency Response Plan
B-3.3 Emergency Drills
B-3.4 Maintenance Manual
B-3.5
54 B-4 SUBMERSIBLE CRAFT PILOT
B-4.1
B-5 QUALIFIED PERSONNEL
B-5.1 Introduction
B-5.1.1 Life Support.
B-5.1.2 Buoyancy and Stability.
B-5.1.3 Navigation.
B-5.1.4 Communications.
B-5.1.5 Power Sources and Electrical Arrangements.
B-5.1.6 Emergency Planning.
B-5.1.7 Personnel Responsibilities.
B-5.1.8 Practical and Operational Training.
B-6 CERTIFICATE OF COMPETENCE
B-6.1 Introduction
B-6.2 Definitions
56 ASME PVHO-2 CASES

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