complete, the forms are inserted in the folder. BOILER TUBE FAILURE REPORTS degaussing The form shown in figure 2-16 is a standard form to be  used  when  reporting  failed  or  replaced  boiler pressure  parts.  The  form  (NAVSEA  9510/2),  together with any required samples of deposits, tubes, and boiler water, should be forwarded to the nearest shipyard or repair facility for analysis and report. If the tube failure is unusual and there is doubt of the cause, send the tubes and report to the Naval Ships Engineering Center, Philadelphia Division (formerly Naval  Boiler  and  Turbine  Laboratory).  Send  them according  to  current  instructions  issued  by NAVSEASYSCOM. When filling out the Boiler Tube Casualty Report, always  use  standard  terminology  to  provide  meaningful information on the nature and causes of the damage. If you  cannot  determine  the  exact  type  of  damage, remember and use the following terms to help you. •  RUPTURE  describes  all  openings  associated with tube enlargement; l PERFORATION describes openings other than cracks that are not associated with tube enlargement; .   CRACK   describes   a   longitudinal   or circumferential separation where there is no appreciable tube enlargement. If  it  is  necessary  to  submit  samples  in  connection with  boiler  pressure  part  damage,  follow  current instructions issued by NAVSEASYSCOM.  Here are a few  tips  on  how  to  prepare  and  submit  samples: .  Samples  of  damaged  pressure  parts  must  be obtained as nearly as possible in their original form. A complete tube section containing an example of the metal damage makes a good sample. . Cut sample tubes into convenient lengths for shipping,  but  mark  them  CLEARLY  for  reassembly.  Do NOT use oil for cutting a tube that is to be submitted as a sample. Cut sample tubes so the damaged area will not be cut, burned, or otherwise disfigured. .  A  poorly  labeled  sample  is  nearly  worthless. Mark tube sections with paint to show the side toward the furnace, the top and bottom orientation  of  the tube, the distance of the rupture, crack, or fault from the furnace  floor  or  roof  (if  the  complete  tube  is  not forwarded),  and  the  steam  drum  end.  Also,  use  paint  to show  the  relationship  of  each  section  to  the  other sections of the tube, the boiler number, the name of the ship, and any other necessary information. The marking must not cover or contaminate the damaged area Do NOT submit tube samples with paper tags tied onto them; when paper tags are used, they generally  become lost or disfigured long before the sample arrives at its destination. . The best way to submit a sample of a tube deposit is usually to submit a section of the tube with the deposit still in place. If for some reason this cannot be done, separate the deposit sample from the metal. Use a sharp instrument that can take the entire thickness of the deposit down to the sound metal. As a last resort, you can  take  deposit  samples  by  scraping  or  brushing. However, samples taken in this way are broken up and frequently contaminated with other material. They provide limited useful information. . Forward deposit samples in clean bottles or cans. Permanently mark the container with all the required identifying   information. . Take a 1-gallon sample of boiler water while the boiler is being emptied or just before it is emptied and submit it with samples of waterside deposits. Be sure the bottle is clean before the sample is collected Fill the bottle almost to the top; stopper it tightly; and label it clearly  with  all  identifying  information,  including information on recent water tests and water treatment. . When you submit samples for analysis, send an explanatory letter with them. Include information on the circumstances under which the failure occurred, the cause of the failure (if known), the firing rate at the time, the number of steaming hours since the last waterside cleaning, and any other pertinent formation. BOILER TUBE RENEWAL SHEETS Boiler Tube Renewal Sheets, often called Boiler Tube  Data  Sheets,  should  be  used  to  keep  a  record  of defective  tubes  and  of  renewed  tubes.  Boiler  Tube Renewal  Sheets  are  available  for  most  boilers  now  in naval  use.  Figure  2-17  illustrates  this  form  for  a Babcock  &  Wilson  double-furnace  boiler;  figure  2-18, A  and  B,  shows  the  form  for  a  Foster  Wheeler single-furnace boiler. If Boiler Tube Renewal Sheets are not available for a particular boiler, similar forms can be prepared from the boiler plans. 2-27