Bulwark Safety Systems offers several solutions that make following LOTO procedures easier and more consistent for your employees.
SGW LOTO Checklist Books: This short video shows how a simple LOTO Checklist Book makes the LOTO procedure easy to follow and consistent. By making your procedure simple and consistent employees are less likely to cut corners.
If your procedure differs from the standard book, custom versions can be created. If you would like a free sample book please let us know.
Trapped Key Technology: The American National Standard Institute included examples of practical and useful applications of alternative risk reduction methods when writing the latest edition of the LOTO standard. Humans in their nature can forget to apply every step of a LOTO procedure, so it often makes sense to add engineering controls that cannot be forgotten or avoided.
ANSI/ASSE Z244.1-2016 “The Control of Hazardous Energy Lockout, Tagout and Alternative Methods” includes examples of trapped key technology as an enhanced version of lockout/tagout. In applications requiring mains isolation, a mechanical trapped key system can be used on access points to equipment ensuring that full power isolation takes place before access is permitted.
Example: Alternative Risk Reduction Measures for Mains Isolation for Machines/Equipment ANSI/ASSE Z244.1 includes the following recommendations of how to incorporate trapped key for mains isolation:
- “Directly driving the contacts via a trapped key fitted to the shaft. This method would work on units that are small enough to allow the trapped key to drive directly.
- “Having a cam mechanism and bolt lock module for units that are too large for the trapped key to directly drive.”
It also includes a useful image of key switch and cam locking arrangements for the readers of Z244.1 to visualise an application to multiple access points.
Fortress Interlocks offers a variety of directly driven key switch variants up to 63A contacts with a choice of contact arrangements. Typically those looking for three phase isolation utilize a 4 Normally Open switch. For those applications with larger switches or custom arrangements the keys can be mechanically interlocked into a switch handle arrangement in a Switch Control Unit (SCU).
Fortress Interlocks offers a variety of directly driven key switch variants up to 63A contacts with a choice of contact arrangements. Typically those looking for three phase isolation utilize a 4 Normally Open switch. For those applications with larger switches or custom arrangements the keys can be mechanically interlocked into a switch handle arrangement in a Switch Control Unit (SCU).
If you have any questions or an application that you would like to discuss or take a look at, please let us know at safety@807b6827-0714-4edf-8865-42abc476289c.fs02.conves.io
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