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COLD-IRON   WATCH
Shaft Alley Watch

Fireman - Navy Firefighter, Fireman training manual
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service pumps. The fireroom watch may also assist the  burnerman  in  lighting  fires  in  the  boiler.  This watch  may  also  assist  in  shifting  suction  tanks  on fuel   oil,   fresh   water,   feedwater,   and   shifting cooling  water  strainers  and  fuel  oil  strainers. THROTTLE   WATCH The tasks of a throttleman at the main engines are  critical.  Orders  from  the  bridge  concerning  the movement of the propellers must be complied with immediately.  To  make  correct  adjustments  for  the required speed, you must keep a close watch on the  revolutions-per-minute  (rpm)  indicator  on  the throttle  board.  You  have  to  open  or  close  the throttle, as required, to achieve or maintain the necessary rpm. Besides handling the throttle itself, you   may   also   have   to   operate   a   variety   of associated  valves;  accurately  log  all  speed  changes in  the  Engineer’s  Bell  Book;  visually  check  all gauges  (pressure,  temperature,  vacuum,  and  so forth)  installed  on  the  throttle  board;  and  keep the  petty  officer  in  charge  informed  of  any abnormal  gauge  readings. You should become thoroughly familiar with all  the  gauges,  instruments,  and  indicators  on  the throttle board to know what the normal readings are. Some of these include the steam, feedwater, and  cooling  water  pressure  gauges,  steam temperature  thermometers,  the  rpm  indicator,  the EOT, gauges indicating the vacuum obtained in the  main  engine  low-pressure  turbine,  and  others. Whenever an opportunity presents itself, study the throttle board and ask questions. Do not hesitate to  ask  the  operator  which  readings  are  normal. Ask which readings are appropriate for steaming conditions. After learning the difference between a normal reading and an abnormal reading, you will be able to help prevent a major casualty, You will recognize an abnormal reading and can report it  to  the  petty  officer  in  charge  of  the  watch. ENGINE  ROOM UPPER-LEVEL  WATCH When  you  are  assigned  to  the  duties  of  the upper-level  watch  in  the  engine  room,  you  will have  to  perform  the  following  tasks: . Record periodic temperature and pressure readings   from   various   gauges   on,   or connected  to,  the  upper-level  machinery. . Make required valve adjustments to correct   conditions   indicated   by   slight variations  from  the  normal  readings,  and report  unusual  conditions  to  the  petty officer   in   charge. .  Maintain  a  normal  water  level  in  the deaerating  tank,  if  it  is  located  in  the engine  room,  by  adjusting  the  excess  and makeup  feed  valves. l  Light  off  and  secure  turbogenerators  and other  upper-level  machinery,  as  ordered. . Maintain an adequate gland seal pressure on  the  turbogenerator. ENGINE  ROOM LOWER-LEVEL   WATCH You will be assigned to the engine room lower level to assist the lower-level watch (pumpman). You  will  be  involved  with  a  number  of  pumps  and other  auxiliary  machinery.  Some  of  the  pumps and equipment with which you will work are the main lube oil pumps and lube oil coolers; the main condensate pumps and main condenser; the main feed  pumps;  the  main  feed  booster  pumps;  the fire  pumps;  and  when  they  are  installed  in  the engine  room,  air  compressors. Besides  learning  the  proper  procedures  for starting, operating, and stopping the pumps and equipment, you must make various checks of the operating machinery. Some of the checks for the main feed pump, the lube oil pump, and the main condensate pump are described in the sections that follow. Main Feed Pump You  will  have  to  comply  with  the  posted instructions   and   safety   precautions   for   the machinery and equipment at the main feed pump station.  When  assisting  the  pumpman,  you  will also  perform  the  following  duties: .  Maintain  the  main  feed  pump  discharge pressure  at  a  predetermined  value  by adjusting  the  constant  pressure  governor. . Keep the main feed pump bearings at the proper temperature by regulating the flow of  water  through  the  feed  pump  lube  oil cooler. . Check to ensure the lube oil pressure to the bearings  is  correct. 1-21






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