Receives, inventories and catalogs instruments for calibration according to construction schedule; sets up calibration and loop files; checks on installation of instrument loops; coordinates and runs (or assists) in loop checks, to include checkout with computer as required; maintains installation and completion records; keeps loop drawings, installs air tubing and control tubing runs, works start up following start up procedures; inspects meters, indicators and gauges to detect abnormal fluctuations; test accuracy of flow meters' pressure gauges, temperature indicators, controllers, radiation counters or detectors and other recording, indicating or controlling instruments to locate defective components in the system; removes defective instruments from system and decontaminates, disassembles and cleans instruments and replaces defective parts; lubricates instruments and replaces defective wiring and tubing; keeps loop drawings, installs air tubing and control tubing runs, works start up following start up procedures. reaching in all directions, handling and manipulating objects and materials; coordinating the movements of eyes, hands and fingers to operate tools and equipment; lifting 30 to 50 pounds from ground level, waist level, and/or overhead; carrying objects, tools, equipment, etc.