10-37. Which  of  the  following  conditions  can cause  a  spring-loaded  reducing  valve  to function   improperly? 1. Main  or  auxiliary  valve  fails  to seat  properly 2. Adjusting  spring  requires readjustment   or   replacement 3. Foreign  matter  is  deposited  on  the working  parts  of  the  valve 4. Each of the above 10-38.    Which  of  the  following  corrective actions  to  a  spring-loaded  reducing valve  may  require  facing-off  the  valve stem  end  to  obtain  the  proper  clearance between the diaphragm and valve stem end? 1. Lapping-in  the  main  valve 2. Replacing  the  valve  diaphragm 3. Grinding-in  the  auxiliary  valve 4. Adjusting  the  valve  spring  tension Question 10-39 is to be judged True or False. 10-39. The  proper  water  seal  level  is maintained  in  the  upper  half  of  the  dome on  the  pneumatic  pressure-controlled reducing  valve  by  steam  condensation. 10-40. When  a  pneumatic  pressure-controlled reducing  valve  is  being  installed  or replaced,    care  must  always  be  taken  to replace  which  of  the  following  seals? 1. The water seal in the upper half of the dome 2. The water seal in the lower half of the dome 3. The  glycerine  seal  in  the  upper  half of the dome 4. The  glycerine  seal  in  the  lower  half of the dome 10-41. Assume that,    when  repairing  a  pneumatic pressure-controlled   reducing   valve,   you lose the water seal. Why must you replace  the  water  seal  before  putting the  valve  back  in  service? 1. To  prevent  the  glycerine  from contacting  the  diaphragm 2. To  prevent  the  steam  from contacting  the  diaphragm 3. To  allow  the  glycerine  to  come in  contact  with  the  diaphragm 4. To allow the steam to come in contact  with  the  diaphragm 10-42. If  the  glycerine  of  a  pneumatic pressure-controlled   reducing   valve   must be  replenished  and  NO  glycerine  is available,  which  of  the  following actions  should  you  take? 1. Leave  the  lower  seal  empty  for  the time  being 2. Use  water  for  the  lower  seal  until you  can  get  glycerine 3. Use oil for the lower seal until you can  get  glycerine 4. Shut off the valve and tag it inoperable  until  you  can  get glycerine  for  the  lower  seal 10-43. The  discharge  pressure  of  a  reducing valve  increases  above  the  desired amount. What is the most likely cause of this? 1. A  broken  spring 2. Failure  of  the  diaphragm 3. A  change  in  air  temperature 4. Poor valve seating due to dirt or water 10-44. A  check  on  a  closed  reducing  valve  which has  failed  to  deliver  steam  shows  that the  dome  pressure  gage  reads  the  same  as the  outlet  pressure  gage. What is the likely  cause  of  this  problem? 1. The  diaphragm  has  failed 2. The  valve  stem  is  binding 3. The  filling  plug  is  leaking  air 4. Temperature  changes  are  causing  the air  to  expand 10-45. In case of an oil spill, which of the following  persons  will  be  assigned  the specific  responsibility  to  direct  the cleanup  operation? 1. CNO 2. On-scene   coordinator 3. Area   coordinator 4. On-scene   commander Question 10-46 is to be judged True or False. 10-46. In  the  Navy,  only  major  Navy-related spills must be reported. 10-47. The  person  responsible  for  maintaining  a detailed  log  of  spill-related  activities is  the 1. CNO 2. area  coordinator 3. on-scene   coordinator 4. on-scene  commander 64