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Tham khảo tài liệu 'maintenance of petroleum systems b episode 3', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | UFC 3-460-03 21 JANUARY 2003 3.11.1.2. Bottom loading is the only acceptable means of loading tank trucks and tank cars. It increases safety by reducing turbulence and splashing which contribute to static electricity generation. Existing top-loading stands must be converted to bottom-loading. If unusual circumstances require top-loading contact the MAJCOM fuels engineer for a waiver. 3.11.1.3. Design flow through loading arms and or hoses is 1135 to 2271 liters per minute 300 to 600 gallons per minute . See MIL-HDBK-1022A for further design guidance. 3.11.2. Components 3.11.2.1. Tank Trucks. The preferred loading arm for jet fuel is a metal counterbalanced swiveltype of aluminum or stainless steel although an approved hose meeting the requirements of API Bulletin 1529 Aviation Fueling Hoses is acceptable. Hoses if provided must be stored away from direct sunlight. Other components include a diaphragm control valve with deadman to control starting and stopping of fuel transfer grounding equipment dry break couplers API RP 1004 Bottom Loading and Vapor Recovery for MC-306 Tank Motor Vehicles vapor collection recovery systems when required strainer and meter. Meters should also be designed to preset the fill volume and automatically shut off flow when the preset amount is reached. 3.11.2.2. Tank Cars. Counterbalanced articulated swivel-type tank car loading assemblies are preferred. Typical components include those for tank trucks paragraph 3.11.2.1. . An electronic fuel level sensing system is frequently provided. 3.12. Ground Product Fueling Systems. These systems are usually designed to dispense fuel from either an aboveground or an underground storage tank through a service station type dispenser. Fuel is pumped using a dispenser-mounted suction pump or a submersible pump mounted in the fuel tank. Separate systems are used for each grade of fuel dispensed. The primary fuels dispensed are MOGAS motor gasoline diesel and JP-8. The Environmental Protection Agency EPA
