In response to requests from stakeholders, the Pipeline and Hazardous Materials Safety Administration (PHMSA) and the Occupational Safety and Health Administration (OSHA) have published a joint guidance memo to clarify their respective requirements for labeling hazardous chemicals for bulk shipments.
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The key difference between the two sets of regulations is that PHMSA’s labeling requirements apply to the transportation of hazardous materials (hazmat) in commerce while OSHA’s regulations apply to the workplace, both before and after transportation. One key point is that PHMSA’s hazardous materials regulations (HMRs) prohibit display of any markings on a package containing a regulated hazmat, which can be confused with a label required in the HMRs. However, this prohibition does not apply to packages labeled in conformance with certain international standards.