Inspection Interval and Tagging After Modification
A scaffold is erected and inspected, and a green tag is attached indicating it is safe for use. The next day, a crew removes two guardrails on the second lift to load materials onto the platform. They do not replace the guardrails immediately and do not change the tag. Later that day, another worker sees the missing guardrails and reports it to the competent person. The scaffold is 8 m high and is used by multiple trades. The competent person must determine the appropriate response and whether the inspection regime was adequate.
1. What should the competent person do upon receiving the report?
Read the worked answer
The competent person should immediately go to the scaffold and: (1) stop all use of the scaffold and evacuate personnel from the affected area; (2) ensure the missing guardrails are replaced or the scaffold is barricaded to prevent access; (3) inspect the entire scaffold for other unauthorized modifications; (4) remove the green tag and replace it with a 'Do Not Use' tag until the scaffold is made safe; (5) after restoring the guardrails, re-inspect the scaffold and attach a new green tag; (6) document the incident and report it to site management; (7) conduct a toolbox talk with all trades about the prohibition against altering scaffolds without authorization. The competent person should also investigate why the crew removed the guardrails and failed to replace them, and reinforce the permit-to-work or tagging system.
2. Was the inspection regime adequate? What improvements are needed?
Read the worked answer
The inspection regime was inadequate because it did not prevent or detect the unauthorized removal of guardrails. While the scaffold was initially inspected and tagged, the system failed to control modifications. Improvements needed: (1) implement a permit system for any scaffold modification, requiring competent person approval; (2) increase the frequency of inspections, especially after changes or during multi-trade use; (3) use 'Scafftag' or similar systems with clear 'Do Not Use' tags that are placed when modifications occur; (4) train all workers to recognize that removing guardrails is a serious safety violation and to report it; (5) designate a scaffold supervisor to monitor ongoing use; (6) ensure that the competent person conducts daily inspections when the scaffold is in use, as required by many standards (e.g., OSHA requires inspection before each work shift and after any occurrence that could affect structural integrity). The key is to have a proactive system that prevents unauthorized alterations.