NBBI R Endorsement study guide
NBBI R Endorsement · Work through your exam, one topic at a time.
The NBBI R Stamp endorsement is the National Board's accreditation mark for organizations that perform repairs and alterations on boilers and pressure vessels. On the National Board site, the R Stamp sits alongside the NR, T/O and VR stamps in the Accreditation section, which signals that it is an organizational accreditation rather than a personal certification like the Certified Individual or Commissioned Inspector credentials. The NBBI R Endorsement study guide has 4 sections and about 1,286 words.
01R Stamp Accreditation
The R Certificate of Authorization is issued by The National Board of Boiler and Pressure Vessel Inspectors (NBBI) to organizations that repair or alter boilers and pressure vessels under the National Board Inspection Code (NBIC). It is not a manufacturing stamp and does not authorize new construction.
348 words, about 2 min02Repair and Alteration Requirements (NBIC)
NBIC Part 3 defines a repair as work that restores a boiler or pressure vessel to a safe, operable condition without changing its design parameters. An alteration changes the pressure-retaining capability or design: changing MAWP or design temperature, adding or relocating openings, changing service, or changing material.
327 words, about 2 min03Quality Control System Requirements
The QC system is the documented set of controls that ensures every repair or alteration meets NBIC and the R program. The manual must describe scope and organization; authority of management and the AI; design control; material control including identification and traceability; welding (WPS/PQR and welder qualification); NDE; calibration of test equipment; inspection hold points; nonconformance and corrective action; records; internal audits; and training.
298 words, about 1 min04Inspection and Data Report Registration
The AI is a National Board Commissioned Inspector who verifies that repairs and alterations comply with NBIC and the organization's QC manual. The AI reviews the work scope, witnesses hold points, reviews NDE and test results, and signs the R-1 form.
313 words, about 2 min