Interlocking
Interlocking is a crucial component in any rail depot, where a momentary lapse of concentration or small error of judgment can have dire consequences.
Interlocking solutions are vital for protecting both personnel and equipment in rail maintenance facilities. They prevent unauthorised train movements or access to high-risk areas and ensure that safety standards are upheld.
Zonegreen solutions apply the concept of interlocking to create increasingly sophisticated systems that can potentially prevent personal injury or costly damage.
Trapped Key Interlocking (TKI)
Trapped key Interlocking (TKI) is sometimes known as a key transfer system. It uses a series of coded keys to prevent dangerous machine functions from being performed and can limit access to certain areas unless specified conditions are met.
The same key is used for multiple locks, preventing more than one piece of equipment being accessed at any one time. If your depot requires access to various equipment, or multiple areas under the same conditions, an exchange box can be added to allow the release of additional keys.
Zonegreen solutions integrate the ‘best of the best’ trapped key interlocking systems to suit the customer’s local preferences. The solutions are modular and can be expanded or modified to grow with any rail maintenance depot. Pre-existing systems can be adapted, or updated, when changes are required.
The operation of Zonegreen trapped key interlocking solutions can be seen in operation in the film below.