Contractor Customer:
Ensuring Crane Safety After a Move

Independent testing and inspection of crane assembly and installation was needed when moved to a new location. Crane moves, unlike typical equipment moves, are not only focused on standard compliance but also on proper assembly and safety. The purpose of these inspections and tests is to provide assurance that custom or non-certified equipment meets the requirements of the appropriate codes, safety orders and industry standards. These inspections and tests are normally required by the local building inspection authority having jurisdiction (AHJ).

Business Issues

The crane required a new field inspection to review the electrical systems when it moved to another location to begin work.

  • Needs approved by local AHJ before beginning operation
  • Need a field evaluation, or third-party inspection, before AHJ will grant equipment approval

Solutions Provided

A field inspection of the crane was required and completed within time required by customer. The inspection included the following:

  • etiCS team took field measurements to ensure equipment was working within manufacturer specifications
  • All major power components were evaluated to the appropriate nationally recognized standard(s)
  • A visual inspection of the equipment was completed
  • Exposed non-current carrying parts of the equipment were verified to be effectively grounded in accordance with the applicable provisions of NEC®, Article 250.
  • All internal components were inspected for installation in a suitable enclosure and effective
  • Overcurrent protection installed in this equipment was evaluated for compliance with the applicable codes and standards
  • Wiring was verified to be properly sized and rated, with a temperature rating suitable for the installed application
  • The equipment safety interlocks, emergency stops, operator controls and human machine interfaces (HMI) were verified to be properly identified.

Project Results

All discrepancies, potential hazards and reasons for approval rejection were addressed and corrected prior to the AHJ’s visit saving the customer time and money. Many of the corrections also protected the safety of the employees working on and near the crane in the new location as well.

  • The eti Conformity team found that the incorrect short-circuit current rating was listed on the nameplate. The discrepancy was noted, and the nameplate information was corrected.
  • The control panel nameplate was not installed in a plainly visible location outside of the control panel enclosure, as required, so it was relocated to a new position in plain view.
  • Two primary overcurrent protection fuses were discovered to be oversized. The customer replaced them with the correctly sized fuses.
  • The etiCS team found a switch used for disconnecting the equipment was unmarked. The customer was able to add a marking stating “Crane Disconnect” plainly visible near the switch.
  • Arc Flash and Electrical Shock Hazard warning labels were applied where missing.
  • Fuse replacement markings were corrected to reflect the correct amperes used.
  • Oversized amperes fuses were discovered and replaced in accordance with manufacturer’s specifications
  • The project was completed in the time period required for the project.

The customer was satisfied and plans to use the eti Conformity team for its field evaluation needs in the future.

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