A professional who operates steam oven to parboil tuna fish loins preparatory to canning. Respnsibilities include:

• Pushes racks of fish loins into oven chamber, and spaces racks to ensure free circulation of heat throughout oven.
• Closes oven doors and turns handwheel to secure and seal doors.
• Turns valves to admit steam into oven, observes temperature and pressure gauges, and adjusts valve settings to maintain temperature and pressure for specified time.
• Turns off heat, opens oven, and pulls racks of fish to cooling area.