What action should be taken before using a scaffold which is secured by masonry anchor ties?

The correct answer emphasizes the importance of safety and structural integrity when using scaffolds secured with masonry anchor ties. These ties play a critical role in ensuring that the scaffold remains stable and safe for use. Before employing a scaffold that relies on such ties, it is essential that they have been tested by a competent person. This testing ensures that the tie systems can safely support the intended loads and withstand environmental conditions, which is crucial for preventing accidents and injuries on site.

A competent person possesses the necessary skills, knowledge, and qualifications to evaluate the safety and performance of the ties, ensuring that they adhere to established safety standards and regulations. This step is vital for maintaining a safe working environment.

In contrast, allowing any site worker to conduct the inspection would not ensure the necessary level of expertise. Covering the ties for safety or painting them for visibility, while they may have some benefits, do not address the fundamental requirement for their load-bearing integrity prior to use.