What precautions should be taken for relocation and short‑distance moving after an Asphalt Distributor Truck is loaded with materials?

Relocation and short‑distance moving of a fully‑loaded Asphalt Distributor Truck count as high‑risk mobile working scenarios. Liquid asphalt inside tanks features high flowability, heavy weight and high temperature. Improper operations easily cause asphalt leakage, vehicle rollover, high‑temperature scalding and road‑surface contamination, leading to safety and quality accidents. Standard operating specifications must be followed strictly, and precautions shall be implemented across four dimensions: pre‑relocation equipment inspection, driving‑operation norms, working‑condition control and on‑site safety protection.
Comprehensive equipment inspection must be finished before relocation, serving as the foundation for safety. First, check feed openings and manhole covers of asphalt tanks and ensure complete locking and sealing to prevent asphalt leakage and overflow caused by driving vibration. Second, shut down all spraying nozzles and delivery‑pipeline control valves. Inspect sealing gaskets and joints of pipelines for integrity to avoid liquid asphalt leakage contaminating road surfaces and vehicle chassis. Meanwhile, examine vehicle braking systems, steering systems, tire pressure and shock‑absorbing devices for normal conditions. Special attention shall be paid to tank insulation‑heating systems to stabilize asphalt temperature within specified storage ranges, preventing overflow from overheating or pipeline blockage due to asphalt solidification under low temperatures. Finally, clear sundries around the truck to eliminate potential hazards.
During relocation travel, vehicle speed and operations shall be controlled rigorously. Fully‑loaded trucks have high centers of gravity, highly‑mobile liquid cargo and huge inertia. Low and constant speed must be maintained. Speed shall not exceed 30 km/h on urban roads, and shall be kept below 15 km/h on bumpy rural roads and construction zones. Sharp acceleration, sudden braking, sharp turns and frequent lane changes are forbidden throughout travel. Shifting liquid asphalt instantly alters vehicle centers of gravity and easily results in vehicle drift or rollover. Decelerate in advance and pass steadily when driving around curves or on slopes. Parking and coasting on slopes are prohibited.
Strict requirements apply to travel‑route and road‑condition selection. Prioritize smooth main roads with steady traffic flow. Avoid potholed sections, steep slopes, narrow bridges and densely‑populated zones. Bumpy roads intensify asphalt sloshing inside tanks, raising rollover risks and possibly loosening tank seals or damaging pipelines and causing leakage. Overloading during relocation is strictly forbidden. Load materials in strict accordance with rated truck capacities. Overloading greatly degrades vehicle braking performance and stability and acts as a major trigger for relocation accidents.
In addition, temperature management and on‑site safety protection must be implemented. Monitor tank temperatures continuously during relocation trips. Hot asphalt shall be kept at constant temperature to prevent asphalt deterioration or pipeline blockage caused by sharp temperature fluctuations. No personnel shall stand behind or alongside the truck or follow closely during relocation to prevent scalding from unexpected leakage or splashing. Stop periodically during long‑distance relocation to inspect tank sealing, pipeline status and tire temperature. Pull over for disposal immediately upon detecting leakage, abnormal temperature rises or weak braking. Never drive with faulty equipment. Upon arriving at construction sites, park steadily, engage the handbrake fully and wait for a short period to stabilize asphalt conditions before subsequent distribution operations.