Technical Discussion _ Issue 12 (Prizes for Answers)

1. Carefully verify the process to ensure its smooth operation without any disruptions or leaks (the opening degree of the valves at the base of the oil receiving and sending tanks must be over 90%)； 2. Check and confirm that relevant equipment and safety accessories such as the pressure gauge, thermometer, level gauge, and safety valve of the spherical tank are in good working condition ； 3. Check whether the lubricating oil in the pump has been filled to the specified level, and whether the pump rotates smoothly ； 4. Verify that all interlocks for oil tanks and pumps are functioning properly.

It’s just some information from our organization; it’s not necessarily accurate, but I’d like to share it with everyone. 1. Drain the alkali solution and amine solution from the corresponding liquefied gas tank to prevent them from entering the desulfurization tank and affecting the lifespan of the desulfurizing agent ； 2. Fill the desulfurization tank with qualified liquefied gas and let it stand for 24 hours to allow the desulfurizing agent to be saturated and activated ； 3. After the desulfurization agent is activated, proceed with the desulfurization of the substandard liquefied gas, keeping the feed rate below 24 M3/H ； 4. Before feeding, the personnel on duty should promptly check and confirm that the pressure gauges, level gauges, thermometers, flow meters, pipelines, safety valves, flange surfaces, safety accessories, pumps, etc. of the spherical tank are in good working condition.

What preparations are needed for the feeding operation of liquefied gas cylinders? Answer: (1) Carefully check the process to ensure its smooth operation while preventing any disruptions or leaks (the opening degree of the valves at the base of the oil receiving and sending tanks must be over 90%) ； (2) Check and confirm that related equipment and safety accessories such as the pressure gauge, thermometer, level gauge, and safety valve of the spherical tank are in good working condition ； (3) Check whether the lubricating oil in the pump has been filled to the specified level, and whether the pump rotates properly, etc ； (4) Verify that all interlocks related to oil tanks and pumps are functioning properly ；

Excerpt from the operating procedures for our company’s oil processing workshop: 7.1.1 Operating procedures for receiving and dispatching liquefied gas spheres – Confirming operational instructions. The procedures for receiving and dispatching liquefied gas spheres include operations such as filling the spheres with liquefied gas, transferring gas between spheres, pressurizing the spheres, loading the gas onto vehicles, emergency release of liquefied gas, as well as supplying liquefied gas to the relevant processing units. (P) – Be thoroughly familiar with all the pipelines, valves, centrifugal pumps connected to the spheres and their functions. (P) – Be familiar with the production process, export process, supply process, and recovery process. (P) – Be proficient in knowing the types, names, and properties of the liquefied gas products received in each storage area. (P) – Be skilled in using the computers available at various stations and know how to operate them. (P) – Strengthen communication among the storage areas, pump stations, loading areas, bottling rooms, etc., according to production needs. – Clearly define the timing of receiving and dispatching operations, tank numbers, pump numbers, quantities supplied or recovered, and the pipelines involved. (P) – Ensure proper matching: pipelines, valves, tank numbers, and pump numbers. – Contact the control room promptly to arrange sampling of liquefied gas when the tanks are full. – Report any factors that may affect product quality immediately so that they can be addressed. – Liquefied gas that does not meet quality standards shall not be sent out. – During daily production, it is essential to prevent overfilling of the tanks. – Accidents such as cross-contamination between spheres, incorrect flow directions, and pump failure must be strictly avoided. (P) – Ten minutes after starting the receiving or dispatching operation, check whether the inflow and outflow rates of liquefied gas are normal. (P) – If the inflow and outflow rates are abnormal, immediately identify the cause and take action, while keeping records. – When the liquid level in the sphere reaches the specified safe height or the minimum allowable level, proceed with tank switching according to the established procedures. (P) – Before stopping the receiving or dispatching operation, it is necessary to contact the relevant units and pump operators to confirm that the machines have been shut down before closing the inlet and outlet valves of the sphere. – During daily operation, inspect the spheres once per hour and address any issues found promptly. – Liquefied gas spheres must not operate under conditions of excessive temperature, pressure, load, or overfilling; the filling coefficient should not exceed 85%. – Dehydration must be carried out promptly during liquefied gas receiving and dispatching operations. – During winter operations, increased inspections are required to prevent freezing and condensation, thereby avoiding damage to equipment. Any damaged equipment should be replaced promptly.

Answer: (1) Carefully check the process to ensure its smooth operation while preventing any disruptions or leaks (the opening degree of the valves at the base of the oil receiving and sending tanks must be over 90%)； (2) Check and confirm that related equipment and safety accessories such as the pressure gauge, thermometer, level gauge, and safety valve of the spherical tank are in good working condition ； (3) Check whether the lubricating oil in the pump has been filled to the specified level, and whether the pump rotates properly, etc ； (4) Verify that all interlocks related to oil tanks and pumps are functioning properly ；

Why are all the prize-winning quizzes about spherical tanks? It is suggested that the original poster consider creating a dedicated discussion area.