NFPA-99 Practice Exam

When repair and reinstallation or replacement involves cutting and/or brazing new pipe, how is this work classified?

1. Existing work

2. Minor work

3. New work

4. Unqualified work

The correct answer is: New work

The classification of work involving the cutting and brazing of new pipe as "new work" reflects the nature of the activities being performed. When a system requires the addition, replacement, or significant alteration of its components, such as when new piping is introduced through cutting and brazing, it is fundamentally altering the system's configuration. Defining this as "new work" signifies that the repair or installation is not merely a continuation or modification of an existing structure but constitutes the addition of new elements that require adherence to current codes and standards. This classification ensures that the work complies with the necessary regulations for safety and operational integrity, as there may be significant implications regarding how the new piping integrates with pre-existing infrastructure. In contrast, classifications such as "existing work" would refer to modifications that do not introduce new materials or configurations. "Minor work" typically pertains to smaller, less invasive changes that do not significantly impact the overall system. "Unqualified work" could imply work that does not meet certification or regulatory standards, which does not apply in this context as the work needs to be classified under established terms.