Control strategies, risk

High hazard material - selection of lower hazard material recommended if I substitution is not feasible perform health risk assessment and adopt exposure control strategy to reduce health risks... 

Hazard material perform health risk assessment and adopt exposure control strategy to reduce health risks... 

One problem with the above control strategy is that when the tank fails there is a rapid change in the flow rate entering the main treatment plant. Modify the program so that the flow rate leaving the tank is controlled such that the flow is proportional to the depth of liquid in the tank. The result of this should be that although oscillations in the flow rate are damped and not eliminated entirely, the risk of complete and sudden failure is reduced. 

The chemical characterization of atmospheric pollutants is of great importance for determining their primary sources, elucidating chemical reactions in the atmosphere, determining potential risk to the environment and developing a reasonable control strategy. 

To test these models, their predictions must be compared to the observed concentrations of various species model inputs are adjusted to obtain acceptable agreement between the observed and predicted values. These models can then be used, in combination with the documented impacts on receptors, to develop health and/or environmental risk assessments and various control strategy options. 

Air Pollution Control Strategies and Risk Assessments for Tropospheric Ozone and Associated Photochemical Oxidants, Acids, Particles, and Hazardous Air Pollutants... 

Risk based regulatory scrutiny that relates to the level of scientific understanding of how formulation and manufacturing process factors affect product quality and performance and the capability of process control strategies to prevent or mitigate risk of producing a poor quality product. 

Tetreault, J. (2003) Airborne Pollutants in Museums, Galleries, and Archives Risk Assessment, Control Strategies, and Preservation Management, Minister of Public Works and Government Services, Canada. 

A risk analysis is not an objective by itself, but is one of the elements of the design of a technically and economically efficient chemical process [1]. In fact, risk analysis reveals the process inherent weaknesses and provides means to correct them. Thus, risk analysis should not be considered as a police action, in the sense that, at the last minute, one wants to ensure that the process will work as intended. Risk analysis rather plays an important role during process design. Therefore, it is a key element in process development, especially in the definition of process control strategies to be implemented. A well-driven risk analysis not only leads to a safe process, but also to an economic process, since the process will be more reliable and give rise to less productivity loss. 

Once the precautions that are needed to control exposures are determined, the next step is to compare the level of controls needed against what controls are already in place. There frequently are multiple control strategies that will minimize the potential for exposure. The determination of which control strategy is the best to use is determined by the hierarchy of control principle. Our particular approach to managing risk is to use this hierarchy to evaluate possible risk management approaches for a specific project in conjunction with a modified layer of protection analysis (LOPA) approach.5... 

Sources of heterogeneity of values of time, space or different members of a population that can be modified in principle, at least in part, by intervention, such as a control strategy. For example, variability in emissions of a chemical to the atmosphere could be modified via a control strategy. For both population and individual risk, controllable variability is a component of overall variability. 

Accurate and precise identifications and measurements of specific chemical substances are fundamental to environmental studies and protection programs. Determinations are required to understand natural background concentrations of chemicals in the environment, the nature and extent of environmental pollution by anthropogenic chemicals, trends in concentrations of these substances, the transport and fate of chemical substances, and the causes of variations of concentrations intime and space. Accurate and precise determinations are also required to assess human health and ecological risks caused by exposure to natural and anthropogenic substances, establish air and water quality standards, develop pollution control strategies, evaluate the effectiveness of pollution prevention and treatment technologies, and monitor compliance with and the effectiveness... 

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