Environmental health and safety (EHS) risks pose significant challenges in Kenya's diverse workplaces, especially within environmental technology fields where hazards may arise from chemical, biological, physical, and ergonomic sources. Effective management of these risks protects workers, communities, and ecosystems while ensuring compliance with national regulations such as the Occupational Safety and Health Act (OSHA) and environmental laws enforced by agencies like NEMA. This chapter equips Environmental Technology professionals with essential frameworks and practical measures to identify, control, and mitigate environmental health and safety risks systematically.
The Hierarchy of Controls is a globally recognized framework for managing workplace hazards by prioritizing control methods from most effective to least effective. In Kenya’s environmental technology sector, applying this hierarchy ensures that risks associated with chemical spills, waste management, and biological contaminants are addressed systematically to protect workers and the environment. This topic unpacks the hierarchy’s structure and its application in practical scenarios such as hazardous waste handling in county government facilities or infection control in medical waste processing centers.
The hierarchy of control is a stepwise approach aimed at reducing or eliminating exposure to hazards. It ranks control methods from elimination to personal protective equipment (PPE), emphasizing the most effective controls first to ensure sustainable safety outcomes.
Elimination involves completely removing the hazard from the workplace environment. This is the most effective control because it removes the source of risk entirely. For example, a waste treatment plant in Kisumu may replace a hazardous chemical with a non-toxic alternative, thereby eliminating chemical exposure risks to workers.
Substitution replaces a hazardous material or process with a less hazardous one. This reduces the risk but does not remove it entirely. For instance, a Nairobi-based laboratory might substitute a toxic solvent with a biodegradable solvent to minimize chemical hazards during sample analysis.
Engineering controls isolate people from the hazard through physical modifications. Examples include installing ventilation systems to remove toxic fumes in a pesticide manufacturing facility or using containment barriers around contaminated soil during excavation in a landfill site.
Administrative controls change the way people work to reduce exposure. These include training workers on safe handling of hazardous materials, scheduling work to limit exposure time, and enforcing hygiene protocols in hospitals managing infectious waste.
PPE is the last line of defense when hazards cannot be eliminated or controlled by other means. It includes gloves, masks, respirators, and protective clothing. For example, workers involved in hazardous waste collection at Nairobi County require PPE to prevent direct contact with toxic substances.
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Create a free accountThis chapter focused on managing environmental health and safety risks through a structured approach beginning with the hierarchy of controls, which prioritizes hazard elimination and reduction methods to protect people and the environment. It explored various environmental protection measures that organizations can implement to minimize negative impacts and promote sustainability. The chapter also examined environmental and health policies that guide compliance and best practices in workplaces and communities. Emergency response measures were discussed in detail, emphasizing the importance of comprehensive planning and well-rehearsed response procedures to handle incidents effectively. Practical application of the hierarchy of controls was highlighted as a key skill for identifying and mitigating risks in real-world scenarios. Finally, the chapter underscored the value of conducting mock emergency response exercises to prepare personnel for actual emergencies, ensuring a prompt and coordinated reaction that safeguards health and safety.