Offshore COVID-19 risk assessment based on a fishing vessel

Huang, Luofeng; Hetharia, Wolter R; Rosa, Andrea Grech La; Tavakoli, Sasan; Khojasteh, Danial; Li, Minghao; Riyadi, Soegeng; Setyawan, Dony; Utama, I Ketut Aria Pria; Thomas, Giles

doi:10.1016/j.oceaneng.2023.115408

Cited by 2 publications

(2 citation statements)

References 31 publications

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“…On the other hand, recent engineering studies have investigated adequate layout of passengers and cargo areas of passenger vessels using numerical methods [33,34], as well as the duration and health impact of COVID-19 outbreaks in cargo vessels using mathematical approaches [35]. Huang et al [33,34] used computational fluid dynamics methods to evaluate the dispersion of airborne fluids, such as those derived from coughing, and proposed guidance on the recommended passenger distribution to avoid interaction with the fluid. The most recent application of this approach has been presented by [36], who investigated the distribution of COVID-19 viruses on a fishing vessel, considering various wind and wave conditions.…”

Section: Regional Ferryboatmentioning

confidence: 99%

“…Huang et al [33,34] used computational fluid dynamics methods to evaluate the dispersion of airborne fluids, such as those derived from coughing, and proposed guidance on the recommended passenger distribution to avoid interaction with the fluid. The most recent application of this approach has been presented by [36], who investigated the distribution of COVID-19 viruses on a fishing vessel, considering various wind and wave conditions. These types of studies could be extended to determine suitable configurations of different types of vessels employed for a wide range of activities in the Amazon, such as smaller, high-speed vessels [37] and floating structures [38].…”

Section: Regional Ferryboatmentioning

confidence: 99%

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COVID Pandemics and Inland Transportation in the Brazilian Amazon: A Note on the Risks of Infection in Typical Passenger Vessels

Maia,

Fontes,

Bitencourtt

et al. 2023

COVID

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Located in the center of the largest river basin in the world, the State of Amazonas in Brazil has an extensive network of more than 20 thousand kilometers of navigable waterways, which is the main mode of transportation between localities, both for cargo and passengers. The region is practically disconnected from the rest of the country due to the lack of roads. Thus, the Amazon River network acted as an efficient means of transmission of the new coronavirus (COVID-19), rapidly transforming the region into an epicenter of the pandemic with one of the highest infection rates in Brazil. Despite the adoption of national and state measures to combat new infections, the situation continued to deteriorate for reasons still under investigation. Given this scenario, this work aims to identify possible infection risks in typical passenger vessels used in the Brazilian Amazon. Three case studies of different passenger vessels were considered, discussing possible scenarios that could allow the spread of COVID and proposing some recommendations for infection prevention. It is hoped that this communication will contribute to the dissemination of information related to the typical means of long-distance passenger transport in the Amazon, to the planning of infectious disease prevention strategies on board regional ships and to ensure a sustainable future for the Amazonian population. Furthermore, this research aims to contribute to the sustainable development goals of the United Nations 2030 Agenda on health and well-being.

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Section: Regional Ferryboatmentioning

confidence: 99%

Section: Regional Ferryboatmentioning

confidence: 99%

COVID Pandemics and Inland Transportation in the Brazilian Amazon: A Note on the Risks of Infection in Typical Passenger Vessels

Maia,

Fontes,

Bitencourtt

et al. 2023

COVID

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Performance of low-volume air cleaner and local exhaust in mitigating airborne transmission in hospital outpatient rooms

Zong,

Lin,

2024

Physics of Fluids

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This study intends to explore the effective and flexible solutions to cope with airborne transmission in hospital outpatient rooms. Such solutions might be used as an additional measure during pandemics and as an independent measure in regions with incomplete health facilities and limited resources. It first investigates the dispersion characteristics of exhaled pollutants during typical expiratory activities and then evaluates the effectiveness of a low-volume air cleaner and local exhaust in reducing the risk of cross infection using a newly proposed index, i.e., personal exposure reduction effectiveness (PERE). The results show that, though wearing a face mask largely obstructs the horizontal dispersion of exhaled particles and thus avoids short-range direct transmission, the influence of particles leaked from the edges of a face mask on the doctor and the next patient cannot be ignored. Under the conditions without wearing a face mask, a background ventilation rate of 60 m3/h plus a 50 m3/h desk-mounted air cleaner is effective to prevent the direct exposure of the doctor from the patient's exhaled particles, with the PERE reaching 90.1%. Under the conditions with wearing a mask, a background ventilation rate of 60 m3/h plus a 30–50 m3/h local exhaust above the patient's head removes 85.7%–88.5% of leaked particles, achieving a PERE of 96.6%–100%. The aforementioned PERE value during the two types of conditions is 137% (or 70.4%–71.4%) higher than that under only a background ventilation of the stipulated 120 m3/h by standard. These findings should provide ideas and information for improving the mitigating system of airborne transmission in hospital outpatient rooms.

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Offshore COVID-19 risk assessment based on a fishing vessel

Cited by 2 publications

References 31 publications

COVID Pandemics and Inland Transportation in the Brazilian Amazon: A Note on the Risks of Infection in Typical Passenger Vessels

COVID Pandemics and Inland Transportation in the Brazilian Amazon: A Note on the Risks of Infection in Typical Passenger Vessels

Performance of low-volume air cleaner and local exhaust in mitigating airborne transmission in hospital outpatient rooms

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