A "Chilled Water Charge Hand" is a skilled tradesperson who installs, maintains, and repairs chilled water piping systems, often leading a small team of workers. They are responsible for ensuring the efficient operation of these systems and may also be involved in troubleshooting and diagnosing issues. This role requires expertise in various techniques like welding, soldering, and brazing, as well as the ability to work with blueprints and schematics.