When is the use of a two-person vertical lifeline permitted?

The use of a two-person vertical lifeline is permitted if the system is rated for it. This means that the equipment and setup are specifically designed and tested to safely accommodate more than one person at the same time. It's essential for any fall protection system to meet applicable standards and certifications to ensure the safety of all users. Having a lifeline rated for multiple users significantly reduces the risk of failure during operation, which could have dire consequences in a fall situation.

While training for both users and emergency scenarios are critical components of workplace safety, they do not inherently justify the use of a two-person vertical lifeline unless the system itself is approved for such use. Therefore, the primary concern is the rating and design of the equipment, as this ensures that it can handle the combined weight and forces that might be exerted by two individuals.