 Wysłany: Nie 9:06, 09 Sty 2011 Temat postu: nike air max How to ship ballast water management |
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| How to ship ballast water management
Necessary economic losses. 2 How to reduce ballast water pollution (1) ballast water exchange at sea, it is the most feasible and effective method. (2) try to push clean ballast water to avoid shallow waters at night (night underwater plankton tend to rise to the upper reaches) of ballast water pressure on people. (3) to avoid unnecessary loading of ballast water and non-essential ballast water discharge. (4) The ballast water filter, remove the larger aquatic organisms. (5) deal with ballast water, sediment,nike air max, suspended sediment to extend time, to facilitate the replacement process discharge. Regular cleaning of ballast bilge sediments. (6) various ballast water disinfection. (7) will remain in the ship ballast water or access to exclusive shore reception facilities. (  should be the local port captain of the ship agent or relevant departments to learn about the port spread of harmful aquatic organisms and pathogens, regional, popular plankton bloom area, near the sewage outfall, near the dredging operations, muddy tidal flow of time, tidal influx of poor areas. 3, where ballast water exchange (1) should preferably be in deep, remote offshore 200nmile more depth in the 500 (part of the port required to 2000m) above the open waters. (2) If unable to reach navigable waters of the depth of 500m or more, should the waters away from shore. (3) the way to the port State received in the designated area. 4 Air ballast water exchange in the way (1) empty method: the first ballast tanks emptying of ballast water, and pumped a small amount of water to clean them and then reload the ballast water. It can effectively discharge the ballast tanks of ballast water and sediments,moncler outlet, the replacement time is short, but because of the free surface effect and the emptying process of the hull center of gravity changes, the hull will result in reduced stability,UGG ブーツ, but also cause draft poor change. Draft and trim bad maneuverability of the ship, anti-wave of Dengjun will be adversely affected. In addition, in ships ballast tanks and pumps emptying into the process, due to changes in the hull caused by the hull load force changes, the hull longitudinal bending moments and shear forces may exceed the allowable value of the hull strength or produce torques, to produce shear and bending the hull, distortion. Also, when adverse sea conditions, hull vertical and horizontal shaking violently, these pump or discharge ballast water tanks discontent, the internal components of the ballast tanks have a huge impact, so that the internal structure of deformation of ballast tanks, or even damaged. Especially the elderly poor boat and ship hull structure for use in inclement weather, the danger of this method is quite large. (2) The overflow method: by sea water ballast piping, pump the water from the bottom of ballast tanks pumped ballast tanks, and it filled the air after the overflow pipe to drain away the overflow of water ballast the original water. This method the stability of the hull, draft, shear force and bending moment are basically no effect. But the need to pump ballast water 3 times the tank capacity to effectively replace the ballast water, a long time,mbt shoes ireland, and ballast tank sediments of aquatic organisms and pathogens in the effective discharge is difficult, especially in all ballast tanks corner of the ballast water exchange rates lower. Furthermore, the overflow method to the double bottom ballast tank under high pressure bilge may cause danger; when the air through the tube from the cargo hold, there may be greater due to air pressure pipe can not afford to break and cause cargo water. (3) mixing method: the emptying method + overflow method. According to the actual situation of the ship hull and sea conditions, to take the method of combining the two, whichever is the advantages of each to make up the emptying of law and the inadequacy of the overflow method. (4) When the weather / sea conditions of the reasons, the use of these methods are not feasible replacement of ballast water, the ship ballast water should remain on board as soon as possible to the port authorities. If feasible, should enter the waters under the jurisdiction of the port State to report before. Regardless of the method, must be replaced prior to work out plans for ballast water, and gradually the process of checking each of the ship's stability and strength. Meet the safety requirements only in the premise can be scheduled in accordance with steps to implement ballast water exchange. 5 records to ensure that the ship ballast water management or treatment has been implemented and carried out a record, the ship should have a dedicated officer in charge of it. Loading or discharging ballast water, at least on record Et, start and end time, location, ship ballast tanks or cargo number,moncler sito ufficiale, ballast water temperature and salt melt and the degree of loading or discharge of ballast water quantity . Ballast water treatment or replacement must also be well above the corresponding records for the port authorities for inspection. It should be noted that, regardless of which method to use when sea ballast water exchange, replacement must be based on the total amount of ballast water and pump the volume and displacement of people filling the appropriate time, especially with the overflow method should be fully taken into account at least 3 times the pumped water tank capacity of the time. <Marine Technology \ More articles related to topics：
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