5 Reasons Trapped Key Interlocks Ensure Safety & Efficiency in MRFs

August 22, 2017


Trapped key interlocks have been used in machine guarding applications across all industries since 1932.


Changes in our waste materials are impacting the design and set up of equipment at Material Recovery Facilities (MRFs).  Equipment originally designed to sort larger waste and packaging materials are now needing modifications, or replaced with machines that are capable of sorting smaller materials. 


Equipment designed or modified to sort smaller waste material needs consistent monitoring, and modifications to equipment could require new safety processes.  A review of safety procedures after changes or modifications have been made ensures maintenance can be performed safely and everyone remains safe at the facility.


Five reasons to implement a trapped key interlock safety solution are:

  1. Fulfills ANSI Z244.1 requirements for machine guarding

  2. Customized safety solution for modified equipment and unique applications

  3. TKI systems can be expanded upon as the safety process requirements change

  4. Loading dock TKI interlock systems maintain safety and efficiencies at the sort platforms

  5. Ensures workers have control of partial or full body access areas with the use of a personnel key


Sandy Kaufman, Kirk Key Interlock Company LLC

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