In suspended scaffolds with horizontal lifelines that may become vertical lifelines, what type of devices must be used to connect to the horizontal lifeline, according to safety guidelines?

Lanyards and connectors must be used to connect to the horizontal lifeline in suspended scaffolds according to safety guidelines. Lanyards connect the worker's safety harness to the lifeline, while connectors attach the lanyard to the lifeline.

Explanation:

According to safety guidelines, in suspended scaffolds with horizontal lifelines that may become vertical lifelines, lanyards and connectors must be used to connect to the horizontal lifeline. These devices ensure that workers are securely attached to the lifeline and can move along it safely.

Lanyards are typically made of synthetic fibers or metal cables and have hooks or other attachment devices on each end. They are designed to connect the worker's safety harness to the lifeline. Lanyards are available in various lengths and configurations, such as adjustable lanyards that allow for easy movement.

Connectors are used to attach the lanyard to the horizontal lifeline. They can be carabiners or snap hooks that provide a secure connection between the lanyard and the lifeline. It is important to use connectors that are specifically designed for use with lifeline systems and comply with safety standards.