National Board Inspection Code (NBIC) 2025 Edition (Parts 1-4) NBIC規格, 2025年版: ボイラー及び圧力容器圧力容器検査官全米評議会検査コード
National Board Inspection Code (NBIC) 2025 Edition (Parts 1-4)
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Description
It is the purpose of the National Board Inspection Code (NBIC) to maintain the integrity of pressure-retaining items and pressure relief devices by providing rules for post-construction activities. In providing these rules, the NBIC helps to ensure the safety of the pressure-retaining items’ and pressure relief devices’ continued use.
The NBIC is intended to provide rules, information, and guidance to manufacturers, jurisdictions, Inspectors, owner-users, installers, contractors, and other individuals and organizations performing or involved in post-construction activities, thereby encouraging the uniform administration of rules pertaining to pressure-retaining items and pressure relief devices. A thorough understanding of the NBIC’s information and conformity to its requirements will promote personal and public safety.
The NBIC recognizes four important areas of post-construction activities for pressure-retaining items and pressure relief devices:
• Installation
• Inspection
• Repairs and Alterations
• Testing of Pressure Relief Devices
The NBIC provides rules, information, and guidance for post-construction activities involving pressure-retaining items and pressure relief devices; however, such rules, information, and guidance is not all-encompassing. Where complete details are not provided in this Code, the Code user is advised to seek guidance from the applicable jurisdiction or other technical sources.
The NBIC is organized into four parts to coincide with specific post-construction activities involving pressure-retaining items and pressure relief devices. Each part provides general and specific rules, information, and guidance within each applicable post-construction activity. Individual NBIC parts or other published standards may contain additional information or requirements needed to meet the rules of the NBIC. Each part provides specific references to direct the user where to find this additional information. NBIC parts are identified as:
• Part 1, Installation – This part provides requirements and guidance to ensure the proper installation and functioning of all types of pressure-retaining items. Installation includes meeting specific safety criteria for construction, materials, design, supports, safety devices, operation, testing, and maintenance.
• Part 2, Inspection – This part provides information and guidance needed to perform and document inspections for all types of pressure-retaining items. This part includes information on personnel safety, non-destructive examination, tests, failure mechanisms, types of pressure equipment, fitness for service, risk-based assessments, and performance-based standards.
• Part 3, Repairs and Alterations – This part provides requirements and guidance to perform, verify, and document acceptable repairs or alterations to pressure-retaining items regardless of code of construction. Alternative methods for examination, testing, heat treatment, etc., are provided when the original code of construction requirements cannot be met. Specific acceptable and proven repair methods are also provided.
• Part 4, Pressure Relief Devices – This part provides information and guidance to ensure pressure relief devices are installed properly, that inspections of pressure relief devices are performed and documented properly, and that repairs to pressure relief devices are performed, verified, and documented properly.