SHACMAN Sewage Suction Truck: Product Overview

Q3: What are the safety risks when operating a vacuum truck, and how to avoid them?

1. Tank Explosion Hazard: This risk primarily stems from two scenarios: first, the accidental suction of flammable and explosive substances (such as volatile organic solvents, alcohol-based waste, or residual gas mixtures); second, the presence of open flames in confined operation environments (like septic tanks or closed sewer pipelines), which may ignite flammable gases accumulated in the tank.
   • Prevention Measures: Before starting suction work, conduct a thorough investigation of the waste type at the operation site to strictly prohibit suction of any flammable and explosive materials. When working in confined spaces, completely ban open flames (including smoking, using open-fire lighting tools, or operating equipment that may generate sparks) and use mechanical ventilation equipment to ensure air circulation in the space, reducing the concentration of flammable gases.
2. Toxic Asphyxiation Hazard: Septic tanks, deep sewer wells, and similar confined spaces often accumulate toxic and harmful gases (such as hydrogen sulfide, methane, and ammonia) due to the fermentation and decomposition of organic waste. These gases can cause poisoning or oxygen deficiency-induced asphyxiation in operators if inhaled in large quantities.
   • Prevention Measures: Prior to entering the operation area or activating the suction system, use a professional gas detector to test the composition and concentration of gases in the confined space; only start work if the gas index meets safety standards. Ensure the operation site has sufficient pre-ventilation (e.g., using axial fans for continuous air replacement for no less than 30 minutes). Operators must wear personal protective equipment that meets national standards, such as anti-toxic gas masks and chemical-resistant gloves, and adopt a "two-person operation system"—one person is responsible for on-site operation, and the other stands by at a safe location to provide emergency rescue support.
3. Component-Related Injury Hazard: During the suction and pressure relief process of the vacuum truck, loose tank covers, damaged valve seals, or sudden breakage of quick-connect pipeline joints may lead to high-pressure splashing of sewage/sludge or ejection of faulty components, posing a risk of physical injury to on-site personnel.
   • Prevention Measures: Before each operation, conduct a comprehensive inspection of the vehicle’s key components—check whether the tank cover is tightly locked, whether the valve seals are intact, and whether the pipeline quick-connect couplings are firmly connected; replace damaged parts immediately if any defects are found. When relieving pressure from the tank, first confirm that the internal pressure has dropped to atmospheric pressure through the pressure gauge, then slowly open the pressure relief valve (avoid opening it suddenly). During operation, set up a safety warning zone around the vehicle, and remind on-site personnel to stay away from pipeline joints, pressure relief valves, and other high-risk components to prevent standing in the "potential danger area" of component failure.