820 Cranes and Derricks Safety I

Severe Service Inspections

Where the severity of use/conditions is such that there is a reasonable probability of damage or excessive wear (such as loading that may exceed rated capacity, shock loading exceeding the rated capacity, or prolonged exposure to a corrosive atmosphere), the employer must stop using the equipment and a qualified person must:

• Inspect the equipment for structural damage to determine if the equipment can continue to be used safely.
• Determine if any items/conditions must be inspected during an annual inspection (if so, a qualified person must inspect those items/conditions).

Inspection of Non-Regular Equipment

Equipment that has been idle for three months or more must be inspected by a qualified person in accord with the requirements for monthly inspections before being used.

Inspection of Modified Equipment

Equipment with modifications or additions which affect the safe operation of the equipment (such as a safety device or operational aid, critical part of a control system, power plant, braking system, load-sustaining structural components, load hook, or in-use operating mechanism) or capacity must be inspected by a qualified person, prior to initial use.

Note: Under Standard 1434, any such modification/addition must be approved by either the manufacturer or a registered professional engineer. The inspection must assure the modifications or additions have been made in accord with the approval and must include functional testing of the equipment.

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