NBBI NB 23 (NBIC) Set: 2025 [pdf]

National Board Inspection Code (NBIC), 2025 Edition, Complete Set (Four Volumes)

Ensuring Safety and Integrity of Pressure-Retaining Items and Relief Devices

The National Board Inspection Code (NBIC) 2025 provides rules, guidance, and best practices for post-construction activities involving pressure-retaining items and pressure relief devices. Designed to promote safety, uniformity, and compliance, it supports manufacturers, inspectors, owner-users, and contractors in maintaining operational integrity.

The NBIC covers four critical post-construction activities:

1. Installation – Proper setup, safety criteria, and compliance for all pressure-retaining items.
2. Inspection – Guidelines for documentation, non-destructive testing, and risk-based assessments.
3. Repairs and Alterations – Acceptable methods for modifications, including alternative examination and testing techniques.
4. Pressure Relief Devices – Installation, inspection, repair, and documentation requirements.

The four-part set aligns with these activities:

• Part 1 (Installation): Ensures proper setup and functioning.
• Part 2 (Inspection): Covers documentation, safety, and non-destructive testing.
• Part 3 (Repairs and Alterations): Provides methods for modifications and compliance.
• Part 4 (Pressure Relief Devices): Focuses on installation, inspection, and repair.

Note: The NBIC complements other standards—users should refer to jurisdiction-specific or technical sources for complete details.