# Tank Car, Truck, and Ship Loaders > Load and unload chemicals and bulk solids, such as coal, sand, and grain, into or from tank cars, trucks, or ships, using material moving equipment. May perform a variety of other tasks relating to shipment of products. May gauge or sample shipping tanks and test them for leaks. - Code: 53-7121.00 (O*NET-SOC; SOC 2018 53-7121) - Family: [Transportation & Material Moving](https://foundation.org.ai/occupations#family-53), one of its 57 occupations - Tasks: 19 tasks (9 core and 10 supplemental) - Page: https://foundation.org.ai/occupations/53-7121.00 - JSON: https://foundation.org.ai/data/tasks/53-7121.00.json ## What the work is made of 1. Seal outlet valves on tank cars, barges, and trucks. Core task · Task 12800 · Rated by 86 people who do the job, August 2019 2. Verify tank car, barge, or truck load numbers to ensure car placement accuracy based on written or verbal instructions. Core task · Task 12792 · Rated by 85 people who do the job, August 2019 3. Start pumps and adjust valves or cables to regulate the flow of products to vessels, using knowledge of loading procedures. Core task · Task 12809 · Rated by 86 people who do the job, August 2019 4. Check conditions and weights of vessels to ensure cleanliness and compliance with loading procedures. Core task · Task 12797 · Rated by 86 people who do the job, August 2019 5. Observe positions of cars passing loading spouts, and swing spouts into the correct positions at the appropriate times. Core task · Task 12793 · Rated by 86 people who do the job, August 2019 6. Monitor product movement to and from storage tanks, coordinating activities with other workers to ensure constant product flow. Core task · Task 12795 · Rated by 86 people who do the job, August 2019 7. Operate ship loading and unloading equipment, conveyors, hoists, and other specialized material handling equipment such as railroad tank car unloading equipment. Core task · Task 12794 · Rated by 85 people who do the job, August 2019 8. Record operating data such as products and quantities pumped, gauge readings, and operating times, manually or using computers. Core task · Task 12796 · Rated by 85 people who do the job, August 2019 9. Operate industrial trucks, tractors, loaders, and other equipment to transport materials to and from transportation vehicles and loading docks, and to store and retrieve materials in warehouses. Core task · Task 12798 · Rated by 86 people who do the job, August 2019 10. Connect ground cables to carry off static electricity when unloading tanker cars. Supplemental task · Task 12799 · Rated by 86 people who do the job, August 2019 11. Copy and attach load specifications to loaded tanks. Supplemental task · Task 12808 · Rated by 86 people who do the job, August 2019 12. Remove and replace tank car dome caps, or direct other workers in their removal and replacement. Supplemental task · Task 12802 · Rated by 86 people who do the job, August 2019 13. Test samples for specific gravity, using hydrometers, or send samples to laboratories for testing. Supplemental task · Task 12801 · Rated by 86 people who do the job, August 2019 14. Test vessels for leaks, damage, and defects, and repair or replace defective parts as necessary. Supplemental task · Task 12806 · Rated by 86 people who do the job, August 2019 15. Unload cars containing liquids by connecting hoses to outlet plugs and pumping compressed air into cars to force liquids into storage tanks. Supplemental task · Task 12807 · Rated by 85 people who do the job, August 2019 16. Clean interiors of tank cars or tank trucks, using mechanical spray nozzles. Supplemental task · Task 12804 · Rated by 85 people who do the job, August 2019 17. Lower gauge rods into tanks or read meters to verify contents, temperatures, and volumes of liquid loads. Supplemental task · Task 12803 · Rated by 85 people who do the job, August 2019 18. Operate conveyors and equipment to transfer grain or other materials from transportation vehicles. Supplemental task · Task 12805 · Rated by 85 people who do the job, August 2019 19. Perform general warehouse activities, such as opening containers and crates, filling warehouse orders, assisting in taking inventory, and weighing and checking materials. Supplemental task · Task 12810 · Rated by 85 people who do the job, August 2019 ## More in Transportation & Material Moving - [Air Traffic Controllers](https://foundation.org.ai/occupations/53-2021.00): 23 tasks - [Aircraft Cargo Handling Supervisors](https://foundation.org.ai/occupations/53-1041.00): 6 tasks - [Aircraft Service Attendants](https://foundation.org.ai/occupations/53-6032.00): 18 tasks - [Airfield Operations Specialists](https://foundation.org.ai/occupations/53-2022.00): 27 tasks - [Airline Pilots, Copilots, and Flight Engineers](https://foundation.org.ai/occupations/53-2011.00): 24 tasks - [Ambulance Drivers and Attendants, Except Emergency Medical Technicians](https://foundation.org.ai/occupations/53-3011.00): 11 tasks - [Automotive and Watercraft Service Attendants](https://foundation.org.ai/occupations/53-6031.00): 14 tasks - [Aviation Inspectors](https://foundation.org.ai/occupations/53-6051.01): 13 tasks - [Bridge and Lock Tenders](https://foundation.org.ai/occupations/53-6011.00): 18 tasks - 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