SUNRUI’s user-friendly design can be started with one click on the operation interface, but before operation, we need to do the following confirmation work. According to the order of yesterday’s article, breakthroughs will be checked one by one. The following will introduce the inspection points of each component.
Electro Chamber Unit (ECU)
electrolysis unit
As the core component of the ballast water system, the electrolysis unit is what needs to be paid attention to during inspection? Although there are many automatic valves designed in the ECU, manual valves are still indispensable; even for automatic valves, Shuangrui’s humanized design can manually adjust them to the required position when automatic cannot be achieved. This brings higher reliability, operability and safety to the equipment.
- Open the inlet and outlet butterfly valve of the electrolysis unit. During maintenance, it prevents automatic valves from not closing and brings reliability.
- Close the residual valve of the electrolysis unit. When the ballast water system is not in use, these valves release the residual electrolyte inside to prevent corrosion of the electrolytic unit.
- Open the cooling water inlet and outlet valve of the electrolysis unit. The high-current electrolysis of seawater in the electrolysis unit will generate high temperatures. When the temperature reaches a certain level, the system will SHUT DOWN to protect the electrolysis unit.
- Close the bypass valve and sea drain valve of the electrolysis unit, as well as RV2, 4, 5 & 6 valves.
Power Distribution Equipment (PDE)
distribution cabinet
Generally, the reload query function will be set when the large equipment is started. The power distribution cabinet needs to send power, which means the ballast water system needs to be used, so the generator must be started first and the power supply must be sent from the control room.
- Open the door of the control cabinet, push the main switch upward, and turn on the power.
- At this time, turn the selector switch on the door directly in front of the control cabinet to the remote control position. Otherwise, it cannot be started remotely on the computer.
- Note here that the remote control system defaults to this: the CCR controls the HMI, and the PDE controls the HMI. Some conversion switches are inside the control panel; some are designed to be outside and converted with a key.
Control PC (CPC)
control computer
The XP system is a proven and stable system. For the sake of system stability, Shuangrui still chooses to use the XP operating system. The operation is still very smooth.
- Press the power button. It’s as easy as turning on your computer.
- The computer automatically starts up, the human-computer exchange interface automatically runs, and the operation interface is entered.
- If there is an alarm, it must be dealt with before proceeding.
TRO Sensor Unit (TSU)
residual chlorine detection device
This technology is an American patent. Ballast water treatment systems in use must use this device. I sincerely hope Shuangrui can develop a replacement product as soon as possible. Don’t be like Huawei, who was stuck by the Americans because of chips.
- Check whether the control panel of the residual chlorine detection device is normal, and then check whether it is in the remote control position. Press F1 key to set.
- Check the liquid level and expiration period of the medicine inside. One bottle should be replaced once a month; one bottle should be replaced once a year. For those that need to be replaced once a month, please refer to the usage amount for preparation to save costs.
- Check the hose connected to the pump. If there is air inside, let it out completely. Otherwise, the detection value will be inaccurate, resulting in false alarms.
- Fully open the sampling valve, with T1&2 valves open and T3 valve closed.
Auto Neutralization Unit (ANU)
automatic neutralization unit
If the ballast water lasts long enough, the hypochlorous acid in the ballast tanks will automatically decompose to comply with discharge requirements. Of course, no matter what happens inside, the neutralization unit still needs to be prepared when discharging the load. If the voyage is relatively short, the ballast water needs to be neutralized to comply with the discharge requirements before the ballast water can be discharged. If the voyage is short, the amount of preparation is greater; if the voyage is long, the amount of preparation is less. The same is for economic reasons. This requires you to obtain it from actual experience. Also, please keep it in a dry and cool place because sodium thiosulfate tends to agglomerate. Prepare it only when needed. If not used, drain it and then clean the water tank with fresh water to prevent corrosion.
- Check whether the remote control position is on the control panel. This will enable it to start automatically when loading.
- Check whether the dosing pump is placed in the automatic position.
- Check whether each valve is in the open position.
- Whether the amount of neutralizing acid is appropriate. Formulated based on personal experience. Please refer to the instruction manual for the ratio.
Flow Meter Unit (FMU)
flow meter
There are five flow meters, including one for No. 1 and No. 2 ballast main pipes. One discharge pipe. In the ECU, there is one each for No. 1 and No. 2. The flow meter in the main pipe is to detect the amount of water entering the ballast tank; the discharge pipeline is the flow rate out to sea through the extraction pump during bottom sweeping; the flow meter in the ECU is to detect the flow rate of seawater entering the electrolyzer.
- Check the screen display data. The ballast water system is not used now, and the flow rate inside should be around 0. This actually seems to make no sense. However, in order to troubleshoot later, it is necessary to check whether the screen display is correct when starting operation.
- If the flow meter on the ECU displays incorrectly at the beginning, does it mean that the ballast water treatment system cannot be turned on? The answer is yes. Troubleshooting will be described in detail later.
Fresh Water Temperature Sesor (FTS)
Fresh Water Temperature Sensor
Check the screen data and compare it with the cabin temperature to see if there are any abnormalities. If abnormal, it needs to be replaced. Because the control of water temperature will directly affect the efficiency of the electrolysis unit. Wrong temperature signals give instructions to the system that will give wrong judgments.
- Check whether there is any abnormality outside the sensor.
- Whether the line is loose.
Conductivity Sensor Unit (SCU)
conductivity sensor
By measuring the conductivity of seawater, the content of chloride ions in it can be determined.
- Check whether the display is normal.
- Check the external connecting flange for leaks.
- Check whether the circuit is loose, etc.
GAS DETECTOR SENSOR (GDS)
hydrogen detector
Hydrogen detector measures the concentration of hydrogen produced during the electrolysis process. If the concentration is too high, the system will also SHUT DOWN. Because operating the system at the explosion limit of hydrogen may cause the risk of explosion.
- Check whether the hydrogen probe status on the control panel is normal – green means normal.
- Check whether the external wiring is loose.
- It can be verified regularly.
Filters foreign matter and large marine microorganisms from ballast water. It is best to clean before use.
- Check whether there is floor leakage.
- Is the pressure gauge normal? Check whether the pressure gauge is normal. During use, judge whether the filter needs to be cleaned based on the pressure difference.
Heater Exchage Unit (HEU)
Heat exchangers are generally only used in cold weather. In order to achieve better electrolysis efficiency, steam will be turned on to heat it to the appropriate temperature.
- Check whether there is any leakage in the heater body.
- Are the temperature gauges and pressure gauges normal?