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820 Cranes and Derricks Safety I
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Annual/Comprehensive Inspections

The annual inspection must be conducted by a qualified person and is far more thorough than a shift or monthly inspection. In addition to those items that must be checked during a shift inspection, the annual inspection must include:

  • equipment structure (including the boom and, if equipped, the jib) as follows:
    • structural members (deformed, cracked, or significantly corroded);
    • bolts, rivets, and other fasteners: loose, failed, or significantly corroded;
    • welds for cracks
  • sheaves and drums for cracks or significant wear;
  • parts such as pins, bearings, shafts, gears, rollers and locking devices for distortion, cracks, or significant wear;
  • brake and clutch system parts, linings, pawls, and ratchets for excessive wear;
  • safety devices and operational aids for proper operation (including significant inaccuracies);
  • gasoline, diesel, electric, or other power plants for safety-related problems (such as leaking exhaust and emergency shutdown feature) and conditions, and proper operation
  • chains and chain drive sprockets for excessive wear of sprockets and excessive chain stretch;
  • travel steering, brakes, and locking devices, for proper operation
  • tires for damage or excessive wear;
  • hydraulic, pneumatic and other pressurized hoses, fittings, and tubing, as follows:
    • flexible hose or its junction with the fittings for indications of leaks;
    • threaded or clamped joints for leaks;
    • outer covering of the hose for blistering, abnormal deformation, or other signs of failure/impending failure;
    • outer surface of the hose, rigid tube, or fitting for indications of excessive abrasion or scrubbing;
  • hydraulic and pneumatic pumps and motors, as follows:
    • performance indicators (unusual noises or vibration, low operating speed, excessive heating of the fluid, low pressure);
    • loose bolts or fasteners;
    • shaft seals and joints between pump sections for leaks;

Knowledge Check Choose the best answer for the question.

5-4. The annual tower crane inspection is the most comprehensive and must be completed by _____.