Which of the following should be inspected when responding to a lift station alarm at night?

When responding to a lift station alarm at night, it is essential to inspect all relevant components of the station to ensure proper functioning and address any potential issues. Each of the components listed plays a critical role in the overall operation of the lift station.

Inspecting the dry well allows for assessment of the actual pump operation and check for any blockages or mechanical failures that could impede wastewater flow. The dry well is typically where the pumps are located, and any malfunction here could cause significant backups or overflows.

Evaluating the motor control center is equally important, as this is the hub for electrical controls that regulate the pumps and other equipment in the lift station. A problem with the motor control center could prevent pumps from operating, which is a primary concern when an alarm is triggered.

Additionally, the operation of ventilation equipment is crucial for maintaining air quality and preventing the accumulation of harmful gases within the lift station. Proper ventilation is vital to ensure safety for personnel who may need to enter the facility.

By inspecting all these components, you can comprehensively diagnose the issues causing the alarm and take appropriate action. Therefore, considering the interconnected nature of these systems, inspecting all of the above is necessary for effective response and maintenance.