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Introduction to PMCS
Table C-1.  Preventive Maintenance Checks and Services for Compressed Air System

TM-55-1930-209-14P-7 Water Purification Barges (NSN 1930-01-234-2165) Drinking Water System Manual
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TM 55-1930-209-14&P-7 (6) Increased Inspections.  Perform weekly as well as Before Operations PMCS if: (a) You are the assigned operator and have not operated the item since the last weekly PMCS. (b) You are operating the item for the first time. (7) Leakage  definitions.    In  checking  for  fluid  leaks,  the  following  leakage  definitions  apply  to  all  ROWPU barges and barge equipment, product water, and seawater leakage by class type. (a) Class I Seepage of fluid (as indicated by wetness or discoloration) not great enough to form drops. (b) Class II Leakage of fluid great enough to form drops, but not enough to cause drops to drip from the item being checked/inspected. (c) Class III Leakage of fluid great enough to form drops that fall from the item being checked/inspected. CAUTION Equipment operation is allowable with minor leakages (Class I or II).  However, the fluid  level  or  operating  pressure  of  the  Item  being  checked/inspected  must  be considered.  When In doubt, notify the shift leader or bargemaster. When  operating  with  Class  I  or  Class  II  leaks,  continue  to  check  fluid  levels  as required by PMCS and operating instructions. (8) The following fuel and hazardous material leakage procedures apply for any fuel, chemical, or bilge system. WARNING Class  I,  II  or  III  leaks  or  seepage  occurring  In  a  fuel,  chemical,  or  bilge  container, tank, line, piping, or valve can cause fire or health hazards. (a) If any leaks or seepage from a fuel, chemical, or bilge container, tank or fluid line is detected, it must be immediately reported to the shift leader or bargemaster for corrective action. (b) To prevent combustible or toxic fumes from collecting or contaminated material from spilling, exercise extreme caution after detecting leaks or seepage of flammable or hazardous material. c. Continuous operation.  When equipment must be kept in continuous operation for extended periods of time, check and service only those items that can be checked and serviced without disturbing operations.  Perform complete checks and services when the equipment can be shut down. d. Maintenance log.  Always record the time and date of PMCS, any deficiencies noted, and corrective action taken in the PMCS log book. C-2







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