Change analysis.Hazard identification

Change Safety Analysis hazard identification, analysis of causalities, consequences, options and impact analysis and risk assessment... 

Change analysis o) (also known as Change Evaluation/Analysis, CE/A) is another tool that can assist the identification of causal factors. It is useful for brainstorming about what has changed since conditions were safe, or perceived as safe. It may also be used for hypothesizing potential contributory factors to a hazardous condition or action. 

Hazard identification is continued throughout the design stage and documented in the preliminary hazard analysis (PHA), subsystem hazard analysis (SSHA), and the system hazard analysis (SHA). Even though the primary purpose of these products is to analyze previously identified hazards and to determine the adequacy of controls, every effort should be made to continue to identify new hazards, especially those associated with interfaces and changes. 

In the Aviation Ground Operations Safety Handbook, change analysis is listed among the Tools to Aid in Hazard Identification section as a method to detect the hazard implications of both planned and unplanned change. ... 

The assertion of comprehensiveness is achieved through adherence to a stractured and rigorous process of hazard identification preliminary analysis (Initial Change Safety Analysis and Change Safety Analysis) is done on the process models of a system as base-fined and agreed by the project. The analysis must include all of the boundary interfaces identified witliin the system architecture and mapped to the process models. 

As already mentioned in support of further hazard identification, for each Core Hazard a Process Model has been developed and was used to structure the Change Safety Analysis as described earUer. For each interface, the ICSA class is identified and recorded, and a reference to the relevant core hazard is kept as well as the description of the identified cause. All of the identified causes have been mapped to QRA model elements as well. This activity supported later quantification of some of the safety requirements as detailed later in this book. 

Hazard identification (change analysis) Every planned or new facility, process, material, or equipment is fully reviewed by a competent team, along with affected workers. 

The SLS or DH reviews the risk analysis to assure complete evaluation of the change and identification of potential hazards. He uses the analysis results and documentation to determine if further analysis indicates there is a need for consultation with specialists or to make a Go/No Go decision to proceed with making the change. He records whether the change is approved or denied by checking the appropriate box on fine 7, signs and dates the form. 

Risk Assessment. Identification of potential risks (step one) was based on an analysis of the taxonomic and ecological characteristics of the parental organisms, the functional changes in the microorganisms brought about by the genetic alteration, the mechanism of pesticidal action, and the nature and scope of the proposed field trials. Evaluation of these four areas was the basis for identification of potential hazards and mechanisms for exposure, which in turn were used to formulate the risk issues. ... 

When design or work methods changes are made, a management of change system is to be in place that includes identification and analysis of hazards so that an acceptable risk level is maintained. 

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