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Ammonia Refrigeration

References >> ANSI/NB-23 2001


National Board Inspector Code 2001 Edition, NB-23. (2001). Provides rules and guidelines for in-service inspection of boilers, pressure vessels, piping and pressure relief valves. Also provides rules for the repair, alteration, and re-rating of pressure-retaining items and repair of pressure relief valves.

TABLE OF CONTENTS

Part RA-1- Administrative Requirements

Part RB-37- Inservice Inspection of Pressure Retaining Items

Part RC-81- Repairs and Alterations

Part RD-95- Repair Methods

Mandatory Appendices

  • Appendix 1-113, Preparation of Technical Inquiries to the National Board Inspection Code Committee
  • Appendix 2-115, Stamping and Nameplate Information
  • Appendix 3-119, Steam Locomotive Firetube Boiler Inspection and Repair
  • Appendix 4-135, Glossary of Terms
  • Appendix 5-141, National Board Forms
  • Appendix 6-173, Examples of Repairs and Alterations
  • Appendix 7-177, Procedures to Extend the "VR" Certificate of Authorization Stamp to ASME "NV" Stamped Pressure Relief Devices
  • Appendix 8-181, Inspection, Repair and Alteration of Graphite Pressure Equipment

Non-mandatory Appendices

  • Appendix A-193, Standard Welding Procedures
  • Appendix B-197, Recommended Preheat Temperatures
  • Appendix C-201, Historical Boilers
  • Appendix D-259, Recommended Guide for the Design of a Test System for Pressure Relief Devices in Compressible Fluid Service
  • Appendix E-265, Recommended Procedures for Repairing Pressure Relief Valves
  • Appendix F-271, Pressure Differential Between Safety or Safety Relief Valve Setting and Boiler or Pressure Vessel Operating Pressure
  • Appendix G-275, Safety Valves on the Low Pressure Side of Steam Pressure Reducing Valves
  • Appendix H-281, Recommended Guide for the Inspection of Pressure Vessels in LP Gas Service
  • 287, Interpretations

Part RB - Inservice Inspection of Pressure Retaining Items

  • 1000-40, General
    • 1010-40, Scope
  • 2000-41, Personnel Safety
    • 2010-41, Scope
    • 2020-41, Internal Inspections - Boilers
    • 2030-42, Internal Inspection - Pressure Vessels
  • 3000-44, Inspection Methods
    • 3010-44, Scope
  • 3100-45, Inspection of Boilers
    • 3110-45, General Conditions
    • 3120-45, Pre-Inspection Activities
    • 3130-45, Assessment of Installation, Causes of Deterioration, Types of Defects
    • 3140-46, Evidence of Leakage
    • 3150-46, Inspection of Piping, Parts and Appurtenances
    • 3160-49, Gages, Safety Devices and Controls
    • 3170-51, Records Review
    • 3180-51, Conclusions
  • 3200-52, Inspection of Pressure Vessels
    • 3210-52, General Conditions
    • 3220-52, Pre-Inspection Activities
    • 3230-52, Assessment of Installation
    • 3240-59, Causes of Deterioration
    • 3250-62, Inspection of Parts and Appurtenances
    • 3260-62, Gages, Safety Devices and Controls
    • 3270-63, Records Review
    • 3280-63, Conclusions
  • 3300-64, Inspection of Water Heaters Supplying Hot Water for Purposes Other Than Space Heating
    • 3310-64, General Conditions
    • 3320-64, Inspection of Parts and Appurtenances
    • 3330-64, Gages, Safety Devices and Controls
  • 3400-65, Inspection of Piping Systems
    • 3410-65, General Conditions
    • 3420-65, Precautions Before Conducting Inspection
    • 3430-65, Assessment of Installation; Types of Defects
    • 3440-66, Evidence of Leakage
    • 3450-66, Provisions for Expansion and Support
    • 3460-66, Gages, Safety Devices and Controls
    • 3470-66, Records Review
    • 3480-67, Conclusions
  • 3500-68, Inspection of Safety Devices for Overpressure Protection
    • 3510-68, Scope
    • 3520-68, Device Data
    • 3530-68, Device Condition
    • 3540-69, Installation Condition
    • 3550-69, Operational Inspection
    • 3560-70, Recommended Test Frequencies
    • 3570-71, Additional Inspection Information
  • 3600-73, Inspection of Deaerators
    • 3610-73, General Conditions
    • 3620-73, Assessment of Installation; Causes of Deterioration; Types of Defects
    • 3630-73, Evidence of Leakage
    • 3640-73, Inspection of Parts and Appurtenances
    • 3650-74, Gages, Safety Devices and Controls
    • 3660-74, Records Review
    • 3670-74, Conclusions
  • 3700-75, Inspection of Liquid Ammonia Vessels
    • 3710-75, Scope
    • 3720-75, Assessment of Installation, Causes of Deterioration
    • 3730-75, Evidence of Leakage
    • 3740-75, Inspection of Parts and Appurtenances
    • 3750-76, Gages and Safety Devices
    • 3760-76, Records Review
    • 3770-76, Conclusions
  • 3800-77, Inspection of Pressure Vessels With Quick Actuating Closures
    • 3810-77, Scope
    • 3820-77, Assessment of Installation
    • 3830-77, Evidence of Leakage
    • 3840-77, Inspection of Parts and Appurtenances
    • 3850-78, Gages, Safety Devices and Controls
    • 3860-79, Records Review
    • 3870-79, Conclusions
  • 4000-80, Restamping or Replacement of Stamped Data
    • 4010-80, Scope
    • 4020-80, ASME Stamped Items
    • 4030-80, Other Items
    • 4040-80, Reporting
  • Appendix A, Pressures
  • Appendix B, Name Plate Data
  • Appendix C, System Component Group List
  • Appendix D, Machinery Rooms and Auxiliary Safety Equipment
    • D.1, General
    • D.2, Access, Exit and Containment
    • D.3, Instruction
    • D.4, Protective Equipment
    • D.5, Electrical
    • D.6, Ventilation
    • D.7, Guards
    • D.8, Refrigerant Storage
  • Appendix E, Stress Corrosion Cracking
    • E.1, Introduction
    • E.2, Occurrence
    • E.3, Inspection Surveys
    • E.4, Preventative Measures
  • Appendix F, Pressure Tests
  • Appendix G, Typical Schedule for Inspection and Maintenance
  • Appendix H, Sample Details for Register
  • Appendix I, Sample System Log


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