Layers of Control Analysis

Layers of control are used in military strategies, cyber security of information technology, and in high‐reliability‐type organizations such as the nuclear power industry and chemical processing. Such use is to prevent and reduce operational risk in their operations should a single control measure fail or be rendered ineffective. The objective of occupational risk management is to achieve and maintain an acceptable level of risk; a risk level that is “as low as reasonably practicable”. Possible developments should be considered during the development, implementation, and verification of risk treatment plans. Layers of Protection Analysis is used to analyze the effectiveness of existing controls called independent protection layers. Layers of Control Analysis is a new method developed by the authors that combines layers of protection analysis and layers of mitigation analysis to analyze controls for a hazardous scenario.