Which safety standard covers confined spaces?

The correct choice addressing the safety standards for confined spaces is OSHA 1910.146. This standard outlines specific requirements for practices and procedures to protect employees in environments where confined spaces are present. It includes regulations on hazard identification, employee training, rescue plans, and ventilation requirements, ensuring that workers can safely enter and work in confined spaces, minimizing the risk of accidents and health issues.

Other options refer to different standards that do not specifically focus on confined spaces. For instance, ANSI Z117.7 deals with the safety requirements in hazardous locations, which is important but is not centered on the management and safety procedures specifically for confined spaces. ISO 45001 is a standard concerning occupational health and safety management systems, providing a framework for improving safety and reducing workplace risks, but it does not address confined spaces directly. NFPA 70E pertains to electrical safety in the workplace and establishes guidelines for safely working with electrical systems, rather than focusing on confined spaces.

Overall, OSHA 1910.146 is the primary standard that directly relates to ensuring worker safety in confined environments.