Interface Safety Analysis ISA

This method is used to determine incompatibilities between subsystems and assemblies of an item/system/product that could result in accidents. The method establishes that distinct parts/units can be integrated into a viable 

The flow relationships are concerned with two or more units or items. For example, the flow between two units may involve air, water, steam, lubricating oil, fuel, or electrical energy. In addition, the flow could be unconfined, such as heat radiation from one body (unit) to another body (unit). Problems associated with many products are the proper flow of energy or fluids from one item or unit to another item or unit trough confined spaces or passages, consequently leading to safety-related problems. The flow-related problem causes include faulty connections between units and complete or partial interconnection failure. In the case of fluid, from the safety aspect factors such as those listed below must be considered carefully  

Finally, the physical relationships are concerned with the physical aspects of items or units. For example, two items/units might be very well designed and manufactured and operate well individually, but they may fail to fit together properly due to dimensional differences or they may represent other problems that may lead to safety-related problems. Three examples of the other problems are as follows  

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Chapter 3 presents introductory aspects of safety and human factors. Chapter 4 is devoted to methods considered useful to perform patient safety analysis. These methods include failure modes and effect analysis (FMEA), fault tree analysis (FTA), root cause analysis (RCA), hazard and operability analysis (HAZOP), six sigma methodology, preliminary hazard analysis (PFfA), interface safety analysis (ISA), and job safety analysis (JSA). Patient safety basics are presented in Chapter 5. This chapter covers such topics as patient safety goals, causes of patient injuries, patient safety culture, factors contributing to pahent safety culture, safe practices for better health care, and patient safety indicators and their selection. 

Interface safety analysis (ISA) is concerned with determining the incompatibilities between subsystems of an equipment/product and assemblies that could cause accidents. The method establishes that it is possible to integrate distinct units/parts into a viable system and that normal operation of an individual part or unit will not impair the performance of or damage another unit/part or the total system/equipment. 

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