Minnesota Boiler License Practice Exam

What does the 'R' stamp signify in the context of boilers?

1. Indicates a repaired boiler

2. Signifies a qualified repair/modification facility

3. Marks newly manufactured boilers

4. Indicates boilers that have passed inspection

The correct answer is: Signifies a qualified repair/modification facility

The 'R' stamp is a designation that signifies a facility is qualified to perform repairs and modifications on pressure-retaining items, including boilers. This certification is issued by the National Board of Boiler and Pressure Vessel Inspectors; it ensures that the facility meets stringent requirements and standards for safety and quality in its work. Having the 'R' stamp indicates that the facility has a proven track record of compliance with regulatory requirements, and it provides assurance to customers that any repairs or modifications made to their boilers will be executed by qualified personnel using approved procedures and materials. This is crucial because improper repairs or modifications can lead to serious safety hazards. In contrast, other options refer to aspects that do not align with the significance of the 'R' stamp: it does not simply indicate a repaired boiler, mark newly manufactured boilers, or represent those boilers that have passed inspection. Instead, the 'R' stamp focuses specifically on the capabilities of the repair or modification facility, ensuring that they adhere to established standards for that type of work.