Chemical safety refers to the practices, procedures, and measures taken to ensure the safe handling, use, storage, and disposal of chemicals in order to protect people, animals, and the environment from harm. This includes identifying potential hazards associated with chemicals, assessing risks, implementing control measures, providing appropriate training and personal protective equipment (PPE), and regularly monitoring and auditing chemical safety practices. The ultimate goal of chemical safety is to minimize or eliminate exposure to potentially harmful substances and prevent accidents, incidents, and exposures that could result in injury, illness, or damage to the environment.

Hazardous substances, in a medical context, refer to agents that pose a risk to the health of living organisms. These can include chemicals, biological agents (such as bacteria or viruses), and physical hazards (like radiation). Exposure to these substances can lead to a range of adverse health effects, from acute symptoms like irritation and poisoning to chronic conditions such as cancer, neurological disorders, or genetic mutations.

The classification and regulation of hazardous substances are often based on their potential for harm, the severity of the associated health risks, and the conditions under which they become dangerous. These assessments help inform safety measures, exposure limits, and handling procedures to minimize risks in occupational, environmental, and healthcare settings.

Risk assessment in the medical context refers to the process of identifying, evaluating, and prioritizing risks to patients, healthcare workers, or the community related to healthcare delivery. It involves determining the likelihood and potential impact of adverse events or hazards, such as infectious diseases, medication errors, or medical devices failures, and implementing measures to mitigate or manage those risks. The goal of risk assessment is to promote safe and high-quality care by identifying areas for improvement and taking action to minimize harm.

In the context of healthcare, "safety" refers to the freedom from harm or injury that is intentionally designed into a process, system, or environment. It involves the prevention of adverse events or injuries, as well as the reduction of risk and the mitigation of harm when accidents do occur. Safety in healthcare aims to protect patients, healthcare workers, and other stakeholders from potential harm associated with medical care, treatments, or procedures. This is achieved through evidence-based practices, guidelines, protocols, training, and continuous quality improvement efforts.

Safety management is a systematic and organized approach to managing health and safety in the workplace. It involves the development, implementation, and monitoring of policies, procedures, and practices with the aim of preventing accidents, injuries, and occupational illnesses. Safety management includes identifying hazards, assessing risks, setting objectives and targets for improving safety performance, implementing controls, and evaluating the effectiveness of those controls. The goal of safety management is to create a safe and healthy work environment that protects workers, visitors, and others who may be affected by workplace activities. It is an integral part of an organization's overall management system and requires the active involvement and commitment of managers, supervisors, and employees at all levels.

Patient safety is defined as the prevention, reduction, and elimination of errors, injuries, accidents, and other adverse events that can harm patients during the delivery of healthcare. It involves the creation of a healthcare environment that is safe for patients, where risks are minimized, and patient care is consistently delivered at a high quality level. Patient safety is an essential component of healthcare quality and is achieved through evidence-based practices, continuous improvement, education, and collaboration among healthcare professionals, patients, and their families.