As a tank cleaner, you wash and clean the interior of a tank. You may drain and scrape it using a pressure washer, broom, or another tool to ensure it is as clean as possible. In this context, a tank is a storage device that holds any material in bulk, including vats, kettles, chutes, and some trucks. In this role, you may work in containers that have previously stored hazardous materials, so the ability to wear and use the appropriate safety gear is essential to this position. This job should not be confused with jobs that involve cleaning fish tanks or military tanks, despite the similarities in job titles.