NBBI Authorized Inspector Supervisor (B) cheat sheet

The NBIC is published by the National Board of Boiler and Pressure Vessel Inspectors and is organized into Parts: Part 1 (establishment/inspection of boiler and pressure vessel installations), Part 2 (inspection of pressure relief devices), Part 3 (repairs and alterations), Part 4 (heating boilers), Part 5 (cargo tanks), Part 6 (commissioning), and Part 7 (recommended guidelines).

The NBIC is a code of construction and in-service inspection practice; it is not itself a law. Jurisdictions adopt it by reference, and the adopted edition plus any state amendments governs the Authorized Inspector's work.

Definitions in Part 1 govern throughout: 'Authorized Inspector' is an inspector holding a National Board commission and acting for a jurisdiction or an authorized inspection agency; the 'Inspector Supervisor' directs and reviews that inspection work.

The National Board commission is the personal credential of the inspector; the 'R' (repair) and 'VR' (repair of pressure relief valves) stamps are held by the repair organization, not by the individual inspector.

An inspection agency must be authorized by the jurisdiction (or recognized by the National Board where the jurisdiction has no program) before its inspectors may perform NBIC inspections in that jurisdiction.

NBIC inspection scope covers new construction verification, in-service inspection intervals, repairs and alterations, pressure relief device servicing, and installation/commissioning - each with its own Part and its own records requirements.

The inspector's authority flows from the jurisdiction, not from the owner. Where the NBIC and a jurisdictional rule conflict, the stricter jurisdictional requirement controls.

Records required by the NBIC (inspection reports, repair forms, relief valve test records) must be retained and made available as the jurisdiction directs; the Inspector Supervisor is accountable for the completeness of that record trail.

Each NBIC edition is a complete replacement of the prior edition; there is no cumulative 'amendments only' reading. Work begun under a prior edition is generally judged against the code edition in effect at the time of that work.

The 2025 edition continues the alignment of NBIC in-service rules with the corresponding ASME construction code editions, so acceptance criteria for repairs and alterations track the ASME edition referenced by the jurisdiction.

Administrative changes in recent editions have tightened documentation of inspector qualifications and the identity of the authorized inspection agency on reports and forms.

Part 3 repair and alteration rules continue to require that the repair organization hold a valid National Board 'R' stamp and that the repair be described on an R-1 (or R-2 for certain pressure relief device work) form signed by the Authorized Inspector.

Qualification of nondestructive examination personnel under the NBIC references a recognized SNT-TC-1A-type program; the Inspector Supervisor verifies certification records rather than performing the qualification.

Where the 2025 edition changes a form, the current form must be used; superseded forms are not acceptable for new work even if still in circulation at a plant.

Jurisdictional adoption lags publication: the Inspector Supervisor must confirm which edition the jurisdiction has actually adopted before applying a 2025 change.

Always verify specific 2025 clause numbers and effective dates against the published 2025 NBIC itself; treat any summary, including this sheet, as a study aid rather than the code text.

An NBIC Interpretation is a written answer by the National Board to a specific written inquiry about the intent of a code requirement; it clarifies existing text and does not create a new requirement.

Interpretations are numbered by edition and case (for example, the year plus a sequential number) and are published with the code; cite them by that identifier so the reference is unambiguous.

An Interpretation applies to the code edition cited in the inquiry unless the answer states it applies generally; do not retroactively apply a later interpretation to earlier work without jurisdictional direction.

Precedent value: interpretations guide consistent application across jurisdictions but are not themselves law until a jurisdiction adopts or enforces them.

When a situation is not covered by code text or an existing interpretation, the correct path is a formal written inquiry through the National Board, not an informal ruling by the Inspector Supervisor.

The Inspector Supervisor should maintain a log of interpretations relevant to the agency's work so field inspectors apply a single consistent reading.

An interpretation cannot waive a jurisdictional requirement; where a jurisdiction has issued its own ruling, that ruling governs within that jurisdiction.

Confirm the exact wording and status of any interpretation against the published National Board compilation before relying on it in a dispute.

Two organizational roles exist: the Authorized Inspection Agency (AIA), which employs commissioned inspectors, and the repair organization, which holds the National Board 'R' (and optionally 'VR') stamp.

The Manufacturer's Data Report is the construction record; for boilers it is the P-2/P-3 family of forms and for pressure vessels the U-1/U-1A/U-2 family under ASME, and the NBIC governs the in-service registration that follows.

The Authorized Inspector signs the Manufacturer's Data Report to attest that construction conformed to the code; the Inspector Supervisor is responsible for the competence and independence of the inspectors whose work is signed.

Registration means the data report is filed with the jurisdiction (and the National Board where required) so the item enters the in-service inspection system with a traceable history.

The NBIC 'NB' number is the National Board registration number assigned to a boiler or pressure vessel; it is the key identifier linking the item to its data report and inspection history.

A repair or alteration is documented on an R-1 form (or R-2 for pressure relief devices) signed by the Authorized Inspector, and the form is filed with the jurisdiction to keep the registration current.

The Inspector Supervisor must ensure reports are complete, internally consistent (identifier, design data, code edition, stamp, signatures), and filed within any timeframe the jurisdiction sets.

Loss or absence of the original data report does not erase the item's code status; the jurisdiction and National Board direct how the history is reconstructed, and the Inspector Supervisor documents that process.