PREPARATIONSBefore changing components on a GTE, be sure thatthe replacement parts and tools needed to do the job areavailable. Inspect all measuring devices (such as torquewrenches, meters, and micrometers) to ensure they arein calibration. Also be sure that you and your team haveread the proper technical manual procedures.One method that helps ensure proper use of thetechnical manual procedures is to provide teammembers with a copy of the procedures. Have themcheck off each step as it is completedESTIMATED TIME OF REPAIRWhen making an estimated time of repair (ETR),you must be as accurate as possible. Your ETR couldultimately affect the operational schedule of the ship.Take into account all the factors that may affect an ETR,such as capabilities of your personnel, availability ofmaterials, test procedures, preparations, and time forunexpected delays.REPLACEMENTAs a supervisor, your primary concern is for thesafety of your personnel and equipment. As aresponsible petty officer, you set the example. Shortcuts that go around safety precautions do not save time.You can prevent accidents and save time by explicitlyfollowing safety precautions and actively using safetyprograms such as tag-out and electrical safety.During component changeout, keep track of toolsgoing into and out of the GTE enclosure. Be sure yourpersonnel use care when removing lockwires, cannonplugs, and so forth. Tag and bag all bolts, nuts, washers,and interferences that are removed for reinstallation.Capping fluid lines will prevent contamination of opensystems. Use care when replacing GTE components.Most problems that arise after component replacementare easily avoided. Just remember to work carefully andalways follow the procedures listed in the technicalmanuals.COMPLETION OF REPAIRSAfter GTE repairs are complete, ensure that theproper entries are made in the MGTESR. andEngineering Log. If the replaced component is fromselected equipment, make sure you follow proceduresoutlined in NSTM, chapter 234, “Marine Gas TurbineEquipment Log Books and Service Records,” section 8.When preparing turn-in components for shipment,plug or cap all openings. Do not take the componentsapart to look inside. You may damage the componentand distort the findings of the testing facilities. Therepair activity must make a determination of cause offailure. Other activities collect and use information onfailed components to create design improvements.LM2500 ENGINE CHANGEOUTAt some point in your career, you may have theopportunity to supervise an engine changeout. Thissection discusses this topic from a supervisorystandpoint.For more information on procedures forengine changeout and post changeout adjustments, youshould consult the Propulsion Gas Turbine ModuleLM2500, volume 2, part 3; the Gas Turbine GeneratorSet, volume 2; and the Team Leader Guide for FFG-7Class Ships or the Team Leader Guide for DD-963Class Ships, as applicable.PREPARATIONPlanning a full-scale evolution such as a GTEchangeout takes effort, coordination, and drive. Carefulplanning is an essential ingredient to your effectivesupervision of a GTE changeout. You can reduce delaysand confusion by anticipating the needs of escorts andclearances for intermediate maintenance activities(IMAs), civilians, and other personnel involved.An organizational meeting of all personnel,including those involved with ancillary tasks (craneoperators, hook tenders, riggers, and so forth), isnecessary to plan the evolution. At the meeting youshould inform each individual of his or herresponsibility to the overall team effort. Explain howeach job affects the effort and completion schedule. Youshould distribute monitoring guides and inventory liststo the parties concerned with an explanation of how andwhen to use them. During the meeting, you shouldclarify the time frame established for each taskcompletion. Having given personnel clear directions,you can expect them to perform the procedures onschedule. They should not be surprised when you arrivefor a checkpoint verification. The most important topicto emphasize is safety. It is your responsibility as teamleader to ensure that all safety precautions are strictlyfollowed.Assign a safety observer to your changeout team.His/her sole responsibility is to ensure the safety ofpersonnel working inside the GTE module and uptakes.The safety observer should ensure ancillary personnel2-29
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