NEIEP Mechanics Practice Exam

According to the ASME safety code, under which speed must oil buffers be installed for elevators?

1. Under 100 fpm

2. Over 150 fpm

3. Over 200 fpm

4. Under 250 fpm

The correct answer is: Over 200 fpm

The correct answer pertains to the ASME safety code requirements for elevator installations, particularly concerning the safety measures for elevators operating at different speeds. Oil buffers are critical safety devices designed to absorb the impact of an elevator car in the event of a downward failure. According to ASME safety codes, when the speed of the elevator exceeds a specific threshold, in this case, 200 feet per minute (fpm), it becomes essential to utilize oil buffers to ensure passenger safety and mitigate the risks associated with high-speed descents. This threshold is determined by the potential for increased impact forces at higher speeds, which necessitate more robust safety mechanisms to effectively handle such scenarios. This standard recognizes that as elevator speeds increase, the forces experienced during a free fall can result in more severe consequences. Oil buffers are designed to provide a controlled deceleration for the car, reducing the impact forces and enhancing overall safety for passengers and equipment alike. Thus, any elevator operating over 200 fpm must incorporate these buffers as part of their safety installations to comply with regulatory standards and ensure a safe ride for users.