Reliability of multi-purpose offshore-facilities: Present status and future direction in Australia.

Sustainable use of the ocean for food and energy production is an emerging area of research in different countries around the world. This goal is pursued by the Australian aquaculture, offshore engineering and renewable energy industries, research organisations and the government through the "Blue Economy Cooperative Research Centre". To address the challenges of offshore food and energy production, leveraging the benefits of co-location, vertical integration, infrastructure and shared services, will be enabled through the development of novel Multi-Purpose Offshore-Platforms (MPOP). The structural integrity of the designed systems when being deployed in the harsh offshore environment is one of the main challenges in developing the MPOPs. Employing structural reliability analysis methods for assessing the structural safety of the novel aquaculture-MPOPs comes with different limitations. This review aims at shedding light on these limitations and discusses the current status and future directions for structural reliability analysis of a novel aquaculture-MPOP considering Australia's unique environment. To achieve this aim, challenges which exist at different stages of reliability assessment, from data collection and uncertainty quantification to load and structural modelling and reliability analysis implementation, are discussed. Furthermore, several solutions to these challenges are proposed based on the existing knowledge in other sectors, and particularly from the offshore oil and gas industry. Based on the identified gaps in the review process, potential areas for future research are introduced to enable a safer and more reliable operation of the MPOPs.

Late presentation of a diaphragmatic hernia following laparoscopic gastric banding.

Laparoscopic gastric banding is an established and increasingly popular surgical treatment for morbid obesity. Iatrogenic diaphragmatic injury can complicate upper abdominal and esophageal surgery. We describe here the case of a patient who had undergone revisional surgery to replace a laparoscopic band, who presented acutely, years following surgery, with breathlessness and abdominal pain. CT of the chest and abdomen demonstrated small bowel loops in the left chest and significant mediastinal shift. The patient required an emergency laparotomy to reduce the small bowel contents from the chest and repair the hernial defect. The small bowel contained within the hernia was ischemic though did not require resection. The patient made a prompt recovery. Iatrogenic diaphragmatic injury is a rare, though potentially life-threatening, complication of laparoscopic gastric band placement.