TM 55-1930-209-14&P-9-1 Table C-1.  Preventive Maintenance Checks and Services for Electrical Power Systems B - Before D - Daily Q - Quarterly D - During W - Weekly S - Semiannually A - After M - Monthly A - Annually Interval Procedures: Equipment Is Item Item to be Check for and have repaired Not Ready/ No. B   D A D   W  M   Q   S    A Inspected or adjusted as necessary Available If: NORMAL ELECTRICAL POWER SYSTEM NOTE Only qualified personnel, using proper and authorized test equipment, are authorized to work on electrical power system compo- nents.  This system has been designed and constructed to be primarily maintenance free between major shipyard overhauls. NOTE If electrical system fails to operate, trou- bleshoot according to TM 55-1 930-209- 14&P-9.  Report deficiencies and failures to shift leader or bargemaster.  Keep electrical power systems operational and PMCS logs current. WARNING Make sure electrical components and cir- cuits are turned OFF before starting any Inspection and/or cleaning.  Observe all posted warnings and safety precautions. Circuit breakers must be open (OFF).  Red- tag appropriate switches and circuit break- ers with: "WARNING - DO NOT ACTIVATE. REPAIRS BEING MADE." 1 • • Cables a.   Visually check for loose or damaged Loose or dam- cables.  Make sure all cables are firmly aged cables. attached, corrosion free, and rot subject to rubbing or chafing. 2 • • • Electrical b.   Check for loose or damaged electrical Electrical Switches, connections.  switches, wiring, mounting connections, Mounting systems, hangers.  and electrical insul at- switches, Systems and ing material.  Use insulated tools to wiring, mounting wiring tighten. systems loose or damaged. C-4