Describe the startup procedures for the circulating water plant?

1. Commencement inspection 1. Inspect the cooling tower, water collection tank, and associated facilities 1) Verify that the water distribution nozzles, packing material, and water collectors in the cooling tower are in good condition； 2) Check and confirm that the drain valve of the cooling tower sump is closed ； 3) Check and confirm that the return valve of the circulating chilled water pump is closed ； 4) Check and confirm that all upper tower valves of the cooling tower are closed ； 5) Confirm that all make-up water valves in the cold water tank are closed ； 6) Confirm that the underground sewage well is unobstructed ； 7) Check to confirm that the fan is in good condition and ready for use ； 8) Internal/Verify that the instrument is in good condition and ready for use ； 9) Check to confirm that the purified water system is operating properly. 2 Inspect the circulating chilled water pump, sewage lift pump, and their associated equipment. 1) Verify that the couplings have been properly installed ； 2) Confirm that the protective cover is properly installed ； 3) Verify that the pump’s mechanical, instrumentation, and electrical components are in good condition ； 4) Confirm that the cooling water pump is properly lubricated ； 5) Verify that the cold water pump is properly sealed ； 6) Verify that the drain plug of the cold water pump is properly installed ； 7) Verify that the outlet valve of the cold water pump is flexible and functional, then close it ； 8) Fully open the cold water pump inlet valve ； 9) Verify that the pressure gauge at the outlet of the cold water pump is in good condition ； 10) Check to ensure that all sewage lift pumps are in good condition and ready for use ； 11) Rotate the cold water pump 3–5 times to ensure it moves smoothly without any jamming. 3 Inspect the sand filter system and its associated equipment. 1) Verify that the inlet valves of each sand filter are functional and in the closed position ； 2) Verify that the air path valves of the sand filter operate smoothly and are in the closed state ； 3) Confirm that the slurry filter discharge valve is closed ； 4) Ensure the underground sewage system is unobstructed. 4 Confirm the system procedures and the status of each valve, and keep records. 1) Confirm the on/off status of each valve ； 2) Ensure the process for starting work is smooth. 5. The chemical dosing equipment and associated facilities are in good condition and ready for use, with sufficient water treatment chemicals available. 1) Ensure that the chemical storage tanks are in good condition and ready for use ； 2) Confirm that the chemical dosing pump is in good condition and ready for use ； 3) Verify that the chemical dosing process is correct ； 4) Confirm that the chemical dosing control system is functioning properly ； 5) Confirm that all medications are available. 6 Inspect the sewage tank and its associated facilities 1) Verify that the inlet and outlet processes for the production sewage tank and the domestic sewage tank in the circulating water system are correct ； 2) Verify that the production wastewater lift pump and the domestic wastewater lift pump are in good condition and in standby mode. II. Operate the circulating chilled water pump 1) Ensure that the liquid level in the chilled water tank is within the specified range ； 2) Prepare properly before starting the centrifugal pump ； 3) Confirm the scheduling start command ； 4) Confirm that power is supplied to the motor and it meets the conditions for startup ； 5) Rotate the shaft 3–5 times; it should move smoothly without any obstruction ； 6) Press the motor start button ； 7) Once the pressure gauge indicating the outlet pressure stabilizes, open the manual outlet valve ； 8) The outlet valve should be opened slowly to adjust the pump’s outlet pressure, while monitoring changes in current and pressure ； 9) Adjust the pipeline network pressure to 0.40–0.45 MPa (Note: This is the normal operating pressure; it should be slightly higher during water flushing) ； 10) Confirm that the motor current is below the rated value ； 11) Stop the replacement process when the turbidity of the circulating water, as measured by laboratory analysis, is ≤10 NTU. III. Operation of the cooling tower 1) Verify that the fan is ready for operation ； 2) Confirm that the motor is powered and ready to start ； 3) Slowly open the water supply valve on the cooling tower, and close the low-level valve of the tower basin ； 4) Monitor changes in pipeline network pressure and contact the field operators promptly ； 5) Adjust the opening degree to achieve uniform water distribution ； 6) Control the supply water pressure and return water pressure within the specified range ； 7) Determine the opening degree of the upper tower valve based on the return water pressure ； 8) Decide whether to turn on the fan based on the chilled water temperature ； 9) The liquid level in the cooling tank is kept within the specified range. IV. Water Quality Treatment 1) Installation of monitoring heat exchangers ； 2) Install an automatic dosing system ； 3) Install an automatic sterilization device. V. Operation of the side filtration equipment 1) Verify that the circulating water filtration process is correct ； 2) Slowly open the inlet valve of the sand filter and the air supply valve ； 3) Adjust the opening of the inlet valve to normal. VI. Final Status Confirmation 1) The pump is operating normally, with all parameters within the normal range ； 2) Pressure of the circulating cooling water network: 0.40～0.45 MPa ； 3) Cold water temperature ≤32℃ ； 4) Maintain the liquid levels in the cooling water tanks and sewage tanks within the specified ranges ； 5) The quicksand filter is operating normally.

I. Training for operators, with the following contents: 1. Operation method of single-stage double-suction centrifugal pumps. 2. Operating method for multi-turn valve actuators. 3. Operating methods for axial flow skinners, chemical dosing devices, etc. 4. Familiarity with and drawing of the circulating water process flow diagram. 5. Laboratory technicians are familiar with the operating methods for the testing procedures and equipment. II. Preparation for commencing production: 1. Prepare the drugs to be produced (the dosage parameters are determined by the pharmaceutical factory). 2. Inspect all equipment such as pumps, towers, tanks, valves, instruments, filter systems, and dosing systems. 3. On-site equipment-by-equipment operation training. Basically, one can operate and use it. 4. Check the lubricating oil and lubrication points of all equipment, and carry out equipment trial operation and commissioning. Bring each device up to operational condition. 5. Check whether the fire-fighting equipment is complete and in place. III. Water flushing: 1. Adjust all valves in the system. 2. Notify all water users to adjust the valves within the system so as to ensure smooth operation of the heat exchanger equipment, with no dead zones remaining. 3. Fill the system with tap water. 4. Follow the dispatch instructions to start the water supply pump for flushing. 5. During the flushing process, it is necessary to control the water level in the cooling tower basin, replenish tap water promptly, and discharge wastewater as appropriate depending on the situation. 6. During the flushing process, no unit shall discharge water without permission, and all heat exchangers must be carefully checked for blockages. 7. During the rinsing process, turbidity analysis is conducted every 4 hours. 8. When the turbidity