What document is crucial for ensuring safe operations when using hazardous substances?

The standard operating procedure (SOP) is crucial for ensuring safe operations when using hazardous substances because it provides a detailed outline of the necessary steps and protocols to safely handle, store, and dispose of these substances. The SOP typically includes specific instructions on how to conduct tasks safely, the correct use of personal protective equipment (PPE), emergency response protocols in case of spills or accidents, and compliance with regulatory requirements. This structured approach not only helps in minimizing risk but also ensures that all employees are aware of and adhere to safety practices.

In contrast, the project plan, while important for the overall management and scheduling of operational tasks, does not specifically focus on the safety aspects of handling hazardous substances. The employee handbook often contains general workplace policies and procedures but lacks the detailed safety and procedural information necessary for working with hazardous materials. The training manual may provide information on training requirements and safety topics, but without the precise and operational guidance that an SOP offers, it cannot ensure the same level of safety during day-to-day operations. Hence, the standard operating procedure is indispensable for managing the risks associated with hazardous substances effectively.