Practical Exercise on Purification Technology Version 1 [031] (Short Answer Question)

First, ensure that the bottom drain valve of the level gauge and the top vent valve are closed. Then, slightly open the vapor phase root valve first, followed by the liquid phase root valve. Once the liquid level reaches the normal indication, fully open both the vapor phase and liquid phase root valves.

Answer: First, ensure that the bottom drain valve of the level gauge and the top vent valve are closed. Then, slightly open the vapor phase root valve first, followed by the liquid phase root valve. Once the level reaches the normal indication, fully open both the vapor phase and liquid phase root valves

1. Confirm that the level gauge is ready for use. 2. Ensure that the bottom drain and top vent valve of the level gauge are closed. 3. Slightly open the vapor side root valve. 4. Slightly open the liquid side root valve. 5. Once the level reaches the normal reading, fully open both the vapor side root valve and the liquid side root valve. 6. Contact the control room to compare the on-site level with the level indicated there.

1. Confirm that the level gauge is ready for use. 2. Ensure that the bottom drain and top vent valve of the level gauge are closed. 3. Slightly open the vapor side root valve. 4. Slightly open the liquid side root valve. 5. Once the level reaches the normal reading, fully open both the vapor side root valve and the liquid side root valve. 6. Contact the control room to compare the on-site level with the level indicated there.

First, ensure that the bottom drain valve of the level gauge and the top vent valve are closed. Then, slightly open the vapor phase root valve first, followed by the liquid phase root valve. Once the liquid level reaches the normal reading, fully open both the vapor phase and liquid phase root valves

First, ensure that the bottom drain valve of the level gauge and the top vent valve are closed. Then, slightly open the vapor-phase root valve first, followed by the liquid-phase root valve. Once the liquid level reaches the normal reading, fully open both the vapor-phase and liquid-phase root valves

1. Check that the installation is correct and that the level gauge is intact with no damage； 2. If there are multiple valves between the equipment and the level gauge, first open the valves other than those that are part of the level gauge itself or those located closest to the level gauge ； 3. Slowly open the air valve (upper valve) ； 4. Slowly open the liquid valve (lower valve) ； 5. Perform level gauge flushing operations, and eliminate the possibility of blockages in the pressure guiding tubes during this process. Note: When opening the valve and performing flushing operations, do so slowly to prevent blockages caused by the operation of the level gauge’s leak prevention device. Rinsing procedure: 1. After closing the liquid and water valves, turn them open by 1/4–1/3 turn, then open the drain valve to clean the steam and water pipes as well as the mica sheets. 2. Close the gas valve to flush the liquid-side pipeline and glass sheets. 3. Close the liquid valve and slightly open the gas valve to flush the gas side and the glass sheets. 4. Slightly open the liquid valve and air valve, close the drain valve; the liquid level should rise quickly with slight fluctuations and show a clear indication. Otherwise, flush it again. 5. Open the liquid and water valves fully; if possible, verify that the readings match those of other level gauges.

1. Check that the installation is correct and that the level gauge is intact with no damage； 2. If there are multiple valves between the equipment and the level gauge, first open the valves other than those that are part of the level gauge itself or those located closest to the level gauge ； 3. Slowly open the air valve (upper valve) ； 4. Slowly open the liquid valve (lower valve) ； 5. Perform level gauge flushing operations, and eliminate the possibility of blockages in the pressure guiding tubes during this process. Note: When opening the valve and performing flushing operations, do so slowly to prevent blockages caused by the operation of the level gauge’s leak prevention device. Rinsing procedure: 1. After closing the liquid and water valves, turn them open by 1/4–1/3 turn, then open the drain valve to clean the steam and water pipes as well as the mica sheets. 2. Close the gas valve to flush the liquid-side pipeline and glass sheets. 3. Close the liquid valve and slightly open the gas valve to flush the gas side and the glass sheets. 4. Slightly open the liquid valve and air valve, close the drain valve; the liquid level should rise quickly with slight fluctuations and show a clear indication. Otherwise, flush it again. 5. Open the liquid and water valves fully; if possible, verify that the readings match those of other level gauges.

First, ensure that the bottom drain valve of the level gauge and the top vent valve are closed. Then, slightly open the vapor phase root valve first, followed by the liquid phase root valve. Once the liquid level reaches the normal indication, fully open both the vapor phase and liquid phase root valves.

First, ensure that the bottom drain valve of the level gauge and the top vent valve are closed. Then, slightly open the vapor-phase root valve first, followed by the liquid-phase root valve. Once the liquid level reaches the normal reading, fully open both the vapor-phase and liquid-phase root valves