Access Rail System – R321a PurposeHuman suspension (rope access) - The rail and dual trolley system is designed for human suspension (ropeaccess) as an adjustable anchorage point for external access to facilitate external maintenance. The system usingrail and double trolley assembly is designed for rope access (human suspension). The double trolley assembly isdesigned for single person use. It consists of a fall-arrest trolley (1) joined to the working trolley (2), using apermanent coupler.1 21. Fall arrest trolleyUsed with full-body safetyharness2. Working TrolleyUsed for suspension withworking harness or chairPinstop Permanentcoupler Stainless steelshackleRailFall restraint - Rail plus a single trolley is designed for use as amobile anchor point for fall restraint.Fall arrest - Rail plus a single trolley is also used for fall arrest.Fall arrest requires a shock-absorbing lanyard so falling force isreduced.1 - APPLICATIONS