Which of the following is a requirement for scaffold tags by contractors?

For scaffold tags to be effective and ensure safety on construction sites, several requirements must be met. Having only certified tags indicates that the scaffolding has been inspected and deemed safe for use. This certification process is critical for minimizing hazards associated with scaffold work.

Additionally, the requirement for all tags to be reviewed emphasizes the necessity of oversight and management in scaffold usage. This ensures that each scaffold meets safety standards before being put into operation, encouraging accountability among contractors.

Scaffold tags being issued by an external authority reinforces the independence of the inspection process, adding another layer of safety assurance. This ensures that the inspections are unbiased and adhere to regulatory standards.

Together, these elements form a comprehensive safety protocol that helps prevent accidents related to scaffold use. Therefore, the requirement for scaffold tags by contractors encompasses the need for certified tags, the review of all tags, and the issuance by an external authority, making the option that includes all these criteria the most accurate.