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Recent technological advancements that employ computer-based controls of hazardous energy (e.g., mechanical, electrical, pneumatic, chemical, and radiation) conflict with OSHA's existing lock-out/tag-out standard. The use of these computer-based controls has become more prevalent as equipment manufactures modernize their designs. Additionally, there are national consensus standards and international standards harmonization that govern the design and use of computer-based controls: this approach of controlling hazardous energy is more accepted in other nations, which raises issues of needing to harmonize U.S. standards with those of other countries. The Agency has recently seen an increase in requests for variances for these devices. This RFI will be useful in understanding the strengths and limitations of this new technology, as well as potential hazards to workers.  The agency may also hold a stakeholder meeting and open a public docket to explore the issue.