Hydrogenated Boron Phosphide THz-Metamaterial-Based Biosensor for Diagnosing COVID-19: A DFT Coupled FEM Study

Recent reports focus on the hydrogenation engineering of monolayer boron phosphide and simultaneously explore its promising applications in nanoelectronics. Coupling density functional theory and finite element method, we investigate the bowtie triangle ring microstructure composed of boron phosphide with hydrogenation based on structural and...

Preventing major hazard accidents through barrier performance monitoring

Foreseeing or even predicting major accidents is understandably challenging, both for any practitioner involved as for safety scientists and other academics. Understanding these events and trying to prevent them is a primary goal of a safety theory. Major hazard-related accidents rarely occur but when they do, they can cause many casualties and...

Predicting major hazard accidents by monitoring their barrier systems: A validation in retrospective

OCI Nitrogen, one of Europe's largest fertilizer producers, is investigating the extent to which it is possible to take targeted measures at an early stage and stop the development of major hazard accident processes. An innovative model has been developed and recently explained and elaborated in a number of publications. This current paper...

Predicting major accidents in the process industry based on the barrier status at scenario level: A practical approach

OCI Nitrogen wants to gain knowledge of (leading) indicators regarding the process safety performance of their ammonia production process. This paper answers the question whether indicators can be derived from the barrier system status to provide information about the development and likelihood of the major accident processes in the ammonia...

Determining a realistic ranking of the most dangerous process equipment of the ammonia production process: A practical approach

OCI Nitrogen seeks to gain knowledge of (leading) indicators regarding the process safety performance of their ammonia production process. The current research determines the most dangerous process equipment by calculating their effects resulting from a loss of containment using DNV GL's Phast™ dispersion model. In this paper, flammable and...

Domino effects in chemical factories and clusters, risk in the eye of the beholder: An historical perspective and discussion

Major accidents in Western countries, receiving a lot of media attention in the 1970s, are starting point for research into internal and external domino effects in the chemical and petrochemical sectors and clusters. Initially, these reports are published by government institutions and government-related research centers. With the upcoming...

Een praktische aanpak voor het voorspellen van majeure ongevallen in de procesindustrie op basis van de barriere status op scenario niveau

OCI Nitrogen aims to build up knowledge of (leading) indicators that provide insight in advance into the process safety performance of their ammonia production process. Two sub-studies have already been published in TtA. The first sub-study focused on ranking the most dangerous process units of the ammonia production process. In the second sub...

Een praktische, kwalitatieve aanpak voor het voorspellen van majeure ongevallen in de proces- industrie op basis van organisatorische factoren

OCI Nitrogen aims to build up knowledge of (leading, proactive) indicators that provide insight into the process safety performance of the ammonia production process. Three sub-studies have already been published in TtA. The main question of this sub-study is whether major accidents in the ammonia production process can be predicted from...

Mechanical integrity of process installations: Barrier alarm management based on bowties

A Safety Research project was carried out in an ammonia plant of OCI Nitrogen, located at the Chemelot site in Geleen, The Netherlands. This research focused on the development of a method to monitor accident processes in the chemical industry mainly caused by mechanical integrity of static equipment like vessels, tanks and heat exchangers. A...

Reflecting on the safety zoo: Developing an integrated pandemics barrier model using early lessons from the Covid-19 pandemic

Our current predicament, the Covid-19 pandemic is first of all a health crisis. However, social disruption and economic damage are becoming visible some 7 months after the Wuhan City outbreak early December 2019. The authors wondered what could have been done better in prevention and repression of the Covid-19 pandemic from a safety...

Simulation of scanner- and patient-specific low-dose CT imaging from existing CT images

Purpose: <br/>Simulating low-­dose Computed Tomography (CT) facilitates in-­silico studies into the required dose for a diagnostic task. Conventionally, low-­‐dose CT images are created by adding noise to the projection data. However, in practice the raw data is often simply not available. This paper presents a new method for simulating patient-...