Hazard Identification and Risk Assessment in Launching Girder and Developing Oil-In-Water Emulsion System as a Delivery System to Enhance Food Safety

Abstract

Launching Girder is an equipment extensively used in the prefabricated segmental construction of viaducts. It is used to lift, assemble, post-tension and load the spans of bridges constructed using the incremental/auto launching method. Although automation of launching girder has many advantages such as improved construction efficiency, reduction in accidents, smooth operation, etc., currently, there is limited automation in the operation of launching girders worldwide. In order to automate the construction process, real time data pertaining to the state of the launching girder such as the current launch position, pressure in hydraulic pumps, internal forces, etc. are required. In addition, it is essential to ensure that assumptions made during the design phase are valid during the operation phase. The launching girder consists of the following principle elements are supporting structure; the formwork with regulating devices; supports for concreting and launching stages; Auto launching. Launching girder are most commonly used for placing pre-cast & post tensioned concrete box segment to form viaducts & bridge. Curvature can be accommodate by moving laterally on cross beam& modest gradient can be accommodate. Launching girder technique allowed for major saving as its limited the size of the lifting equipment which would be needed.