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  Heat Exchanger Descaler

 Before                                                           After

Heat Exchanger Descaler Currently, heat exchanger descaling requires the heat exchanger to be removed and washed with an acid solution by an intermediate maintenance activity. The current process requires approximately six days to clean and takes the shipboard system serviced by the heat exchanger "down" as well. A new technology is in use in a variety of commercial applications. The cleaning using this technology works by isolating the components to be cleaned in a closed loop system and circulating a descaling solution through the system. Preliminary tests have confirmed that this method is an effective descaling method and can be used aboard ship with Navy personnel.  This method requires only four hours. Qualification will require a controlled test to verify effectiveness in a controlled shipboard setting and result in a personnel safety approval. The technical point of contact is Darryl Sheedlo, NAVSEA PMS307, (703) 602-8607.

Project Status: Fleet Authorized


EPOXY Bilge Paints

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EPOXY Bilge Paints Corrosion control has been and continues to be the predominant fleet maintenance issue. One area that is particularly susceptible to corrosion is in the bilge area (very bottom of the internal ship’s hull). Water gravitates to the bilges and, combined with fuel and other wastes, causes rapid corrosion unless the metal is adequately protected. Preparing and painting bilges is a difficult and dirty job that no one likes. The surfaces must be completely clean and dry, which is almost impossible in this environment. Until recently, the only alternative was to preserve these areas on a repeated basis. The maintenance of this one area of the ship can require hundreds of man-hours of work per month on a typical ship.  New paints, that have very low volatile organic compounds (VOCs) have been developed in Europe and are being used in the commercial shipbuilding industry there. In order to qualify these paints for U.S. Navy use, MTTC will paint several test bilges on fleet ships in order to quantify the application requirements and the paint's effectiveness. The Navy wants to verify that the paint can be applied over less-than-ideally-prepared surfaces and will adhere properly. The technical point of contact is Mr. Mark Ingle, NAVSEA 05M3, (703) 602-0146 ext. 231.

Project Status: Fleet Authorized




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