NCCER Millwright Practice Exam

When the STAT is centered, the base is shimmed to what position?

1. Level

2. Stationary

3. Horizontal

4. Vertical

The correct answer is: Stationary

When the STAT (Standard Alignment Tool) is centered, the base needs to be shimmed to a stationary position. This is essential because a stationary base helps maintain stability and ensures that any machinery connected to the system is properly aligned and secure. Shimming to a stationary position also mitigates any vibrations or movements that could affect the performance and longevity of the equipment. In millwright practices, achieving a stationary position means that the equipment will not move or shift during operation, which is critical for the safe and efficient running of machinery. Proper alignment and stabilization are fundamental principles in the trade, ensuring that any forces exerted on the machine do not lead to premature wear or failure. When shimming, the focus is on creating a stable foundation that minimizes the risk of misalignment during operational loads. A level reference, while important, does not directly address the requirement for the equipment to be stationary under operating conditions, which is the priority when performing such alignments.