NBBI Authorized Inspector (AI) flashcards

32 cards. Read the term and the definition here. The deck at the top of this page is optional.

Section I scope

Applies to power boilers generating steam above 15 psig and hot-water boilers above 160 psig or 250°F, including fired and unfired steam boilers and certain economizers.

Section IV scope

Covers heating boilers limited to 15 psig steam or 160 psig water at 250°F, including cast-iron and steel heating boilers and their appurtenances.

Section VIII Div 1 scope

Applies to pressure vessels with internal or external pressure exceeding 15 psi; design is by rules with allowable stresses from Section II Part D.

Section VIII joint efficiency

For Type 1 butt welds, E equals 1.00 with full radiography, 0.85 with spot radiography, and 0.70 with no radiography.

NBIC Part 2

Covers in-service inspection of boilers and pressure vessels, including inspector qualification, inspection methods, condition evaluation, and records review.

NBIC inspection interval

NBIC does not set a universal interval; the jurisdiction or owner/user establishes inspection intervals based on service conditions, inspection history, and risk.

NBIC R-1 form

Documents repairs or alterations under NBIC Part 3 and is signed by the R Certificate of Authorization holder and the Authorized Inspector.

NBIC defect evaluation

The inspector compares cracks, corrosion, and laminations with NBIC acceptance criteria and may require repair, alteration, or rerating before return to service.

Repair versus alteration

A repair restores a Code item to its original condition; an alteration changes MAWP, design temperature, or other design parameters and requires new calculations.

R Certificate of Authorization

Required by NBIC for repairs and alterations to Code boilers and pressure vessels; the holder must have an approved quality control program.

Alteration nameplate

An alteration nameplate marked with the R symbol is attached in addition to the original nameplate and shows the new MAWP and temperature.

Repair weld NDE

Repair welds are examined by NDE to the extent required for the original joint or as specified by the inspector, considering thickness and joint type.

Section II Part D

Contains allowable stress values, tensile and yield strength, and physical properties used in ASME Code design calculations for listed materials.

Material Test Report

A document reporting chemical composition and mechanical properties for a material heat; it must be traceable to the heat number and the item.

P-number grouping

Section IX assigns base metals to P-numbers for welding procedure qualification; P-numbers group materials with similar welding characteristics and metallurgical properties.

WPS and PQR

A welding procedure specification must be supported by a procedure qualification record; both are required by Section IX before production welding.

Welder continuity

A welder's performance qualification remains valid only if the welder uses the process at least once every six months.

UW-51 radiography

Section VIII Div 1 full radiography acceptance standard; it defines unacceptable indications and required weld quality for butt welds.

NDE personnel qualification

NDE personnel must be qualified under ASNT SNT-TC-1A, CP-189, or an equivalent program accepted by the applicable ASME Code.

Safety valve

A pressure relief valve actuated by inlet static pressure with pop action, used primarily for steam service and marked with the ASME V symbol.

Set pressure

The inlet pressure at which a pressure relief valve begins to open; it must not exceed the MAWP for Code compliance.

Accumulation limit

Section VIII Div 1 permits 110% of MAWP with one relief valve and 116% with multiple valves during discharge.

VR Certificate

National Board authorization required to repair or remanufacture pressure relief valves; the holder must comply with NBIC valve repair requirements.

AI construction duties

The Authorized Inspector verifies design, materials, welding, NDE, heat treatment, and testing for Code compliance and may reject nonconforming work.

Pre-stamping verification

Before Code stamping, the AI confirms that all inspections and tests are complete and that the data report and nameplate are correct.

AI commission

The Authorized Inspector must hold a current National Board commission and be employed by an ASME-accredited Authorized Inspection Agency.

Form U-1

Manufacturer's Data Report for Section VIII Div 1 pressure vessels; it records design, materials, NDE, tests, and is signed by the manufacturer and AI.

Form H-2

Manufacturer's Data Report for Section IV heating boilers, signed by the manufacturer and the Authorized Inspector after all required tests.

Form P-2

Manufacturer's Data Report for Section I power boilers; it documents design, material, welding, NDE, and hydrostatic test results.

ASME U stamp

Code symbol stamp for Section VIII Div 1 pressure vessels; it may be applied only by a holder of a valid ASME Certificate of Authorization.

ASME S stamp

Code symbol stamp for Section I power boilers; application requires a valid Certificate of Authorization and AI authorization.

Nameplate data

The nameplate identifies manufacturer, serial number, MAWP, design temperature, year built, and Code symbol; it is attached after AI authorization.