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Prepare Full Power and Economy Trail Reports
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Gas Turbine Systems Supervisor - Supervisor manual for Gas Turbine Engines
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Engineering trail report transmittal letter

power   trials   shall   be   conducted   with   a   minimum   75 percent  liquid  load  at  the  commencement  of  the  trial. During   the   trials,   fleet   and   type   commanders   must ensure   machinery   alignments   are   according   to   heat balance   diagrams,   propulsion   operating   guides,   and applicable   technical   documentation. Compile   Information The   information   compiled   during   the   full   power trial  must  be  entered  on  standard  forms  used  for  all  gas turbine-powered  ships.  All  the  following  forms  except the  one  shown  in  figure  1-9  are  available  through  normal supply   channels   according   to   NAVSUP   P-2002.   Figure 1-6   is   the   trial   transmittal   letter   (cover   sheet),   OPNAV form  9094/1A,  NSN  0107-LF-090-9405.  Figure  1-7  is sheet   1   of   2   of   the   trial   data   form,   OPNAV   form 9094/1D,  NSN  0107-LF-090-9440.  Figure  1-8  is  sheet 2   of   2   of   the   trial   data   form,   OPNAV   form   9094/1D, N S N    0 1 0 7 - L F - 0 9 0 - 9 4 4 5 .    V i e w    A    s h o w s    p l a n t condition  data  for  1A  GTE,  while  view  B  shows  data  for 1B  GTE.  The  form  shown  in  figure  1-9  is  not  available in  the  supply  system,  but  it  is  the  standard  format  used to   report   the   actual   propulsion   plant   condition   to   the chief  observer  before  a  full  power  or  even  an  economy trial   commences. Disseminate   Information For   you   to   properly   disseminate   the   information, you   must   be   familiar   with   all   operating   characteristics of  your  plant.  In  other  words,  you  need  to  go  back  to the  basics  and  use  all  the  guidelines  provided  in  the EOSS   and   applicable   technical   manuals.   If   the readings   are   improperly   disseminated,   it   could   mean the  difference  between  a  satisfactory  or  unsatisfactory trial. ECONOMY  TRIALS Economy  trials  in  most  cases  will  be  scheduled  on the  same  day  as  the  full  power  trials.  They  are  usually scheduled   in   this   manner   because   of   the   ship’s competitive   exercise   schedule   and   the   availability   of observers. Just   because   these   trials   are   usually conducted  together  does  not  mean  their  accomplishment periodicity   is   the   same.   Economy   trial   periodicity   is established  by  your  fleet  and  type  commanders.  Fleet and  type  commanders  also  must  be  sure  machinery alignments   during   economy   trials   conform   to p r o p u l s i o n    o p e r a t i n g    g u i d e s    a n d    N A V S E A , SL101-AA-GYD-010,   Energy   Conservation. All  the  economy  trial  report  forms  are  the  same  as those   used   for   the   full   power   trials.   Refer   again   to figures   1-6   through   1-8.   The   forms   are   the   same,   but the  information  entered  in  the  equipment  operating sections  of  these  forms  may  differ.  However,  if  both trials   are   accomplished   on   the   same   day,   the information  provided  on  the  form  shown  in  figure  1-9 will  be  the  same. DRAFT   REPORTS Reports   of   all   satisfactory   and   unsatisfactory engineering   trials   must   be   provided   to   Commander, Naval   Sea   Systems   Command   (SEA56X1).   The   report of   an   unsatisfactory   trial   is   particularly   important.   It provides   information   on   design   or   material   problems that  preclude  a  successful  trial. MARINE   GAS   TURBINE   EQUIPMENT LOGBOOKS The   Navy   deploys   gas   turbine   equipment   in propulsion  and  ship-services  systems  in  its  surface fleet.  Selection  of  gas  turbine  equipment  for  these systems   reflects   a   commitment   to   increase   ship availability   through   reduction   in   system   downtime. Gas    turbine    equipment    combines    acceptable reliability   and   onboard   maintenance   features   with ease   of   removal   and   replacement.   System   downtime and   lower   shipboard   manning   levels   have   been realized  through  properly  directed  maintenance  and logistic   support,   and   reliability   and   maintainability improvement  efforts. Service  records,  as  described  in  this  section,  are used   to   retain   significant   historical   operating   and m a i n t e n a n c e    d a t a    o f    g a s    t u r b i n e    e q u i p m e n t transferred   between   shipboard   installations   and   repair or   rework   facilities. Service   records   provide   a consolidated   source   of   background   information available   to   personnel   conducting   and   analyzing maintenance    activity. All   gas   turbine   records   are   designed   according   to t h e    3 - M    M a i n t e n a n c e    D a t a    S y s t e m    ( M D S ) organizational   (ship)   maintenance   data   collection   or reporting   requirements.   They   are   particularly   important because  of  the  interface  in  marine  gas  turbine  equipment support  between  shipboard  organizational  maintenance and   shore-based   depot   maintenance. The  use  of  service  records  and  logbooks  is  similar to  the  approach  applied  successfully  in  NAVAIR  for many  years  in  the  aircraft  jet  engine  community. 1-19

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