TM 55-1930-209-14&P-19 Table 5-2.  Preventive Maintenance Checks and Services for Drinking Water System B - Before D - Daily Q -  Quarterly D - During W - Weekly S -  Semiannually A - After M - Monthly A -  Annually INTERVAL ITEM PROCEDURES EQUIPMENT ITEM TO BE CHECK FOR AND HAVE IS NOT READY/ NO. INSPECTED REPAIRED OR ADJUSTED AVAILABLE IF B   D   A   D  W  M   Q   S   A AS NECESSARY DRINKING WATER SYSTEM WARNING Be sure electrical power is OFF before per- forming maintenance on electrical systems. Redtag appropriate switches and circuit breakers with: "WARNING - DO NOT ACTI- VATE - REPAIRS BEING MADE." Observe all safety precautions listed in the beginning of this manual. 1 All Components a.  Wipe components clean, especially gauges and control panels. b.  Check for leaks, paying special attention Class Ill leaks. to joints, valves, fittings, and piping. Report leaks to shift leader or bargemas- ter. c.  Check for loose or missing securements or fasteners.  Tighten or replace as neces- sary. d.  Check for damage, especially to pres- Pressure gauges sure gauges, filters, and control panels. damaged. Notify shift leader or bargemaster so repairs can be made. e.  Remove rust and corrosion. Touch or paint in accordance with TB 43-0144 as necessary.  Do not paint threads or labels. 2 Wiring a.  Check wiring for loose or missing con- Cables frayed. nections and frayed cables.  Secure, tighten as necessary. b.  Visually check wiring for loose connec- Sparks are seen. tions.  If sparks are seen, report to shift leader or bargemaster.  Shut power off. 5-4