Introduction Industrial machinery has evolved significantly in the last 40 years. Advances in technology, research, and improvement of safety regulations, have helped the evolution process from complex and unreliable solutions, which often were or are bypassed by the user, to a structured system of hazards identification, risk level quantification, and application process that is repeatable and addresses those hazards, eliminating or significantly mitigating them. The safety lifecycle developed and based on international standards provides the structure required to address the issue. We will explore the safety lifecycle phases, the best way to execute each step, as well as phase interdependency. Safety Lifecycle Analysis Standards are documents that gather areas of knowledge accepted by the technical community. Some of the functional safety standards frequently used in the application and interpretation of functional safety are: ISO 13849 IEC 61508 IEC 62061 RIA 15.06 Most of the standards in functional safety agree on key phases that make part of the safety lifecycle and describe them with minor differences, always setting the stages that are critical for developing the process of functional safety in machinery. These phases are: Risk Assessment Safety Functional Requirement Specification Design Stage Verification and validation Changes and equipment retrofit The dilemma in the industrial field is that the machinery safety and efficiency in the production process, do not go hand in hand. The reality is that with technology advances in control systems, it is possible to improve safety conditions, increase productivity, as well as the quality of the manufactured product. Functional safety philosophy states that this process is focused on the system as interaction of components, rather than the components the individual components.