(92a) Risk Assessment at Samsung Electronics

Risk Assessment is performed as one of the critical PSM element at Samsung Electronics as specialty gases are used in the semiconductor chip manufacturing process. During plant lifecycle (design, operation and demolition), there are a few tools covering to prevent loss of containment at each stage in our facility. The S-PHA Tool (Samsung Process Hazards Analysis) is one of the specialized tool developed for semiconductor industry by Samsung Electronics. The tool is well designed for not only to determine opened-hazardous scenarios, but also hidden-scenarios by our employees easily. As a semi-qualitative tool, the SPERD (Samsung Process Equipment Reliability Data) Handbook was established along with the S-PHA to provide a basis for decisions in terms of frequency of hazardous scenarios in engineering and operations.

Samsung guidelines for new structural safety, d-EHS (design EHS) is also standardized based on probabilistic principles, according to which the probability of structural failure shall be sufficiently small at its design stage.

Risk Assessment techniques have been successfully applied in the new facility in Pyeongtaek district (P5L), Korea at concept design stage. One of the main aims of the study is to identify the risk of natural gas supply and to determine its frequency of fire and explosion resulting in fatality due to leaks occurring from two different types of boiler system. In terms of conforming to the d-EHS for new structural safety, current risk of confirming where safety controls are already in place, and where further action will be needed to implement safety controls have been identified. To reliably calibrate realistic safety factors, conditional modifier such as probability related to the operators staying in a building at the moment of fire occurrence, or ignition factor has been considered. By improving such design guidelines, it is not only to develop and supplement the boiler system to carry out a fire and explosion risk assessment more accurately and efficiently, but also to reduce the amount of construction material by avoiding unnecessary over design.