the  Boiler/Feedwater  Test  and  Treatment  Course (certification  course). 3-M SYSTEMS The  primary  objective  of  the  Navy  Ships’ Maintenance  and  Material  Management  (3-M)  Systems is to manage maintenance and maintenance support in a manner   that   will   ensure   maximum   equipment operational  readiness.  OPNAVINST  4790.4B,  volumes I, II, and III, contain all of the detailed procedures and instructions  for  the  effective  operation  of  the  3-M Systems.  That  includes  examples  of  the  forms  discussed in this chapter. Other instructions on the 3-M Systems are  found  in  the  type  commander’s  maintenance manuals. This chapter will discuss the most common records of the 3-M Systems that must be kept current in the engineering  department. PLANNED  MAINTENANCE  SCHEDULES In  an  effective  Planned  Maintenance  System (PMS), PMS schedules must be accurately filled out and posted in a timely manner. PMS schedules are categorized as cycle, quarterly, and weekly. Cycle Schedule The  Cycle  PMS  Schedule  displays  the  planned maintenance requirements to be performed between major overhauls of the ship. The following information must be tilled in on the cycle schedules: ship’s name and hull  number,  work  center  designator  code,  maintenance index page (MIP) number, component’s or system’s name, and maintenance scheduled in each quarter after overhaul. The  engineer  officer  must  supervise  all  cycle scheduling of engineering department maintenance, and then sign and date the Cycle PMS Schedule before it is posted. If  there  is  a  need  to  rewrite  the  Cycle  PMS Schedule, the old schedules should be filed with the last quarterly schedule with which it was used. Quarterly  Schedule The Quarterly PMS Schedule is a visual display of the  work  center’s  PMS  requirements  to  be  performed during  a  specific  3-month  period.  Spaces  are  provided to  enter  the  work  center,  quarter  after  overhaul, department  head’s  signature,  date  prepared,  and  the months covered. The schedule has 13 columns, one for each  week  in  the  quarter.  These  permit  scheduling  of maintenance  requirements  on  a  weekly  basis throughout the quarter. There are also columns to enter the  MIP  number  and  PMS  requirements  that  may require rescheduling. There are “tic” marks across the top of the scheduling columns for use in showing the in-port/underway time of the ship for the quarter. The  engineer  officer  must  supervise  scheduling  of PMS  on  the  quarterly  schedule  for  his  department.  The engineer officer must then sign and date the schedule before it is posted. At the end of each quarter, the engineer officer must review the quarterly schedule, check the reasons for PMS actions not accomplished, and sign the form in the space provided on its reverse side. The division officer is responsible for updating the quarterly schedule every week. Completed quarterly schedules should be kept on file for 1 year. Weekly  Schedule The Weekly PMS Schedule is a visual display of the planned maintenance scheduled for a given work center during a specific week. The work center supervisor uses weekly schedules to assign and monitor work on the PMS tasks by work center personnel. The  Weekly  PMS  Schedule  contains  blank  spaces to be filled in for work center code, date of current week,  division  officer’s  signature,  MIP  number  minus the  date  code,  component  names,  names  of  personnel responsible  for  specific  maintenance  requirements, outstanding major repairs, and situation requirements. The  work  center  supervisor  is  responsible  for completing  the  Weekly  PMS  Schedule  and  for  updating it every day. FEEDBACK  FORM The PMS Feedback Report Form, OPNAV Form 4790/7B,  provides  maintenance  personnel  with  the means to report discrepancies and problems and to request PMS coverage. All PMS Feedback Reports are sent  to  NAVSEACANs  or  TYCOMs,  based  on  the category of the feedback report. Feedback reports are originated in the work center and must be signed by the originator. They are then screened and signed by the division officer and the engineer  officer  before  being  forwarded  to  the  3-M coordinator. The 3-M coordinator will date and sign the feedback report, serialize it, and return the green copy to the originating work center. The originating work 2-23