Industry News

Isuzu oil tank trucks are dangerous goods transport vehicles. When loading oil, most of them use the height difference between the tank truck and the oil tank to open the valve so that the oil naturally flows into the tank truck. When unloading oil, open self-flow is usually used to unload oil. During the process of loading and unloading oil, a large amount of oil vapor will escape from the oil measuring port or oil drain port of oil tanks and tank trucks. These vapors can easily form explosive mixtures with air, which will cause fire or explosion when encountering a fire source. At the same time, static electricity is easily generated during the process of loading and unloading oil. Therefore, you must be aware of the hazardous factors and control measures for loading and unloading oil on a daily basis to avoid accidents caused by poor operations. Oil tanker loading and unloading accidents.

1. Current status of oil loading and unloading operations
At present, the oil loading and unloading platform is mainly responsible for the loading and unloading of crude oil by tankers and tankers. The oil loading and unloading process generally adopts an open oil receiving method. When the tanker is loading oil, the oil is directly received at the manhole at the neck of the tanker. When unloading the oil, it is directly sprayed and discharged at the oil unloading platform through the oil drain hose of the tanker. During the loading and unloading operations, there are a large number of Oil and gas volatilize. Once the management and operation of these places are not in place, fire and explosion accidents are very likely to occur, causing property losses and casualties.

2. Hazardous factors in loading and unloading oil
(1) Main hazards in oil loading and unloading operations
Failure to wear a fireproof cover for Isuzu tank trucks when entering and exiting the tank area may lead to fire and explosion accidents; failure to guide vehicles entering the station before loading oil may result in injury accidents to vehicles in the station; operators operating in violation of regulations or being inattentive may cause tank overflow, possibly Causing a fire accident; the operator did not wear protective equipment, resulting in oil and gas poisoning; the operator did not wear anti-static work clothes, which may produce static sparks, leading to a fire accident; the operator did not wear a seat belt when measuring oil in the tank, resulting in a fall from a high altitude; the oil was loaded too fast, causing a large amount of The accumulation of static electricity may cause fire or explosion.

(2) Hazardous and harmful factors in oil loading and unloading operations
1. The operating personnel do not have complete and valid job qualification certificates.
2. Workers did not wear labor protection supplies (work caps, anti-static clothing, anti-static shoes) correctly and wore metal
Objects, body static electricity is not discharged before work.
3. The workers did not carry hydrogen sulfide or combustible gas detectors with them and were moving downwind.
4. The operator failed to conduct safety inspections and prompts on the vehicle and driver.
5. The operator failed to connect the ground wire to the car body and the oil tank respectively.
6. The top cover of the oil tank was not opened slowly, and the crane tube did not reach a safe distance from the bottom of the tank.
7. The tank may overflow when filling oil.
8. Take out the crane tube without waiting for the liquid level to stand.
9. The grounding wire was not removed after the tank lid was closed.

Risk analysis and mitigation measures before oil unloading
Risk 1: Insufficient labor protection equipment; Mitigation measures: Wear and use labor protection equipment correctly.
Risk 2: Standing in the downwind, oil and gas are harmful to health; reduction measures: oil unloading station in the upwind.
Risk 3: The electrostatic grounding is not connected or damaged; mitigation measures: Connect the electrostatic discharge device before unloading oil.
Risk 4: The tank loading platform may slip from high altitude; mitigation measures: promptly clean the guardrails, steps, and snow on the platform, pass the inspection, and have a hazardous chemicals transportation license. The procedures for hazardous chemicals employment certificates for transport personnel and hazardous chemicals escort certificates for escorts are complete and valid.

3. Safety requirements and control measures for loading and unloading oil
1. The vehicle has complete license plates, has passed the inspection, and has a hazardous chemicals transportation license. The procedures for hazardous chemicals employment certificates for transport personnel and hazardous chemicals escort certificates for escorts are complete and valid.
2. The vehicle’s fireproof cover (with product certificate and nameplate) and anti-static grounding chain are qualified.
3. The vehicle should be equipped with no less than two ABC 4kg dry powder fire extinguishers, and they should be in good condition.
4. Pressure gauges, combustible gas detectors, measuring instruments, etc. shall be calibrated according to the prescribed period and the quality shall be qualified.
5. Install a human body electrostatic release column at the entrance to the oil loading and unloading site, and install an electrostatic alarm device at the oil loading and unloading site.
6. There are complete safety warning signs such as fire protection, explosion protection, and anti-static at the oil loading and unloading site.

7. Each oil loading port is equipped with a piece of fireproof felt, and each oil loading port or oil unloading port is equipped with at least two ABC-type fire extinguishers. The fire extinguishers are calibrated once a year and the quality is qualified.
8. The outlet pipeline of the oil unloading platform should be equipped with a filter device.
9. The oil loading and unloading platform should be well ventilated to prevent oil and gas from escaping, bubbling, dripping and leaking. There should be no flammable or explosive materials within 20m around.
10. During the process of loading and unloading oil, it is prohibited to use non-explosion-proof tools, machinery and equipment, and all operations, experiments and tests that may produce sparks are prohibited.
11. Personnel are prohibited from carrying fire sources and using non-explosion-proof tools and communication and photography equipment (such as mobile phones, cameras, etc.) at the work site.
12. When loading and unloading crude oil with a hydrogen sulfide concentration higher than 20 mg/l, a guardian must be present. Operators and guardians must wear positive pressure respirators.