クレーンフック検査チェックリスト

When it comes to lifting heavy loads on construction sites, shipyards, 倉庫, or manufacturing plants, the クレーンフック is one of the most critical components. Regular inspection of crane hooks not only ensures safety but also maintains compliance with industry standards and reduces costly downtime. この記事で, we provide a detailed crane hook inspection checklist to help operators and safety personnel keep equipment in top condition.

Why Is Crane Hook Inspection Important?

Crane hooks are subjected to immense stress and wear during lifting operations. Over time, this can lead to fatigue, 変形, or even cracks. A failed hook can result in dropped loads, 重傷, and extensive equipment damage. To prevent such accidents, it’s vital to implement a consistent inspection routine.

When Should You Inspect a Crane Hook?

Inspections should be performed at different intervals:

• Daily (frequent) inspections by the operator before use

• Periodic inspections as part of a scheduled maintenance program (monthly, quarterly, or yearly depending on usage)

• Post-incident inspections after overloads, accidents, or suspected damage

クレーンフック検査チェックリスト

Below is a comprehensive crane hook inspection checklist:

1. Visual Examination

• Check for cracks, nicks, gouges, or wear on the surface.

• Look for corrosion, rust, or deformation of the hook body or shank.

• Ensure that there are no signs of overheating or discoloration.

• Inspect safety latches to ensure they are secure and functional.

2. Hook Throat Opening

• Measure the throat opening and compare it with the original manufacturer’s dimensions.

• a 10% increase in the throat opening usually indicates a dangerous deformation.

3. Hook Twist or Deformation

• Use measuring tools to check if the hook is twisted or bent beyond acceptable limits.

• Deformations greater than 10 degrees from the plane of the unbent hook are typically not acceptable.

4. Wear and Erosion

• Inspect areas where the hook contacts the load chain, wire rope, or lifting slings.

• If wear exceeds 10% of the original cross-sectional dimension, the hook should be removed from service.

5. Markings and Identification

• Confirm that the load rating and manufacturer’s markings are legible.

• Missing or unreadable markings may require hook replacement or further evaluation.

6. Functionality of Safety Latch

• Ensure the latch spring works correctly and the latch fully closes the hook opening.

• Damaged or missing latches must be repaired or replaced immediately.

7. Hook Nut, Pin, or Bolt Integrity

• Check the retaining parts of the hook—nuts, pins, or bolts—for tightness and damage.

• Loose or damaged fasteners pose serious safety risks.

Documentation and Reporting

Always document the inspection findings, 含む:

• 1. Date and time of inspection

• 2. Inspector’s name and signature

• 3. Any observed defects or required maintenance

• 4. Actions taken (repairs, replacements, hook removal)

Maintaining proper records supports accountability and compliance with OSHA, ANSI/ASME, or local regulations.