Return logistics/waste management A risk-based approach to manage the Occupational Hazards in the Arctic drilling waste handling practices

Author(s):  
Yonas Zewdu Ayele ◽  
Javad Barabady ◽  
Enrique Lopez Droguett

The increased complexity of Arctic offshore drilling waste handling facilities, coupled with stringent regulatory requirements such as zero “hazardous” discharge, calls for rigorous risk management practices. To assess and quantify risks from offshore drilling waste handling practices, a number of methods and models are developed. Most of the conventional risk assessment approaches are, however, broad, holistic, practical guides or roadmaps developed for off-the-shelf systems, for non-Arctic offshore operations. To avoid the inadequacies of traditional risk assessment approaches and to manage the major risk elements connected with the handling of drilling waste, this paper proposes a risk assessment methodology for Arctic offshore drilling waste handling practices based on the dynamic Bayesian network (DBN). The proposed risk methodology combines prior operating environment information with actual observed data from weather forecasting to predict the future potential hazards and/or risks. The methodology continuously updates the potential risks based on the current risk influencing factors (RIF) such as snowstorms, and atmospheric and sea spray icing information. The application of the proposed methodology is demonstrated by a drilling waste handling scenario case study for an oil field development project in the Barents Sea, Norway. The case study results show that the risk of undesirable events in the Arctic is 4.2 times more likely to be high (unacceptable) environmental risk than the risk of events in the North Sea. Further, the Arctic environment has the potential to cause high rates of waste handling system failure; these are between 50 and 85%, depending on the type of system and operating season.


Author(s):  
Y. Z. Ayele ◽  
A. Barabadi ◽  
E. L. Droguett

As oil and gas companies in the Arctic attempt to maximize the value of each project and optimize their portfolio of investment opportunities, it has become vital to evaluate drilling waste handling practices for their cost-effectiveness in order to support strategic decisions. Identifying cost-effective waste handling practices, which have a minimal environmental footprint, however, is one of the biggest challenges for Arctic offshore industries. The cost and potential risks of drilling waste handling practices in the Arctic offshore operation will differ vastly, depending on the operating environment such as the ice conditions and negative sea temperature. However, in the majority of the available cost-effectiveness and risk analysis literature, the influence of the operating environment on the cost and risk profile has received less attention. Hence, the aim of this paper is to propose a methodology for risk-based cost-effectiveness analysis (RB–CEA) of drilling waste handling practices by considering the complex and fast-changing nature of the Arctic. The central thrust of this paper is to highlight the fact that comparing different alternatives based on the cost elements alone is misleading. The proposed methodology uses risk assessment as a key component for the cost-effectiveness analysis (CEA). The application of the proposed methodology is demonstrated by a case study of the drilling waste handling practices of an oil field in the Barents Sea. The case study results demonstrate that the operating environment causes costs to be between 1.18 and 1.52 times greater, depending on the type of practices and operating season, in the Arctic offshore compared with the North Sea. Further, the risk of undesirable events is between 1.48 and 2.60 times greater during waste handling activities under Arctic operational conditions.


2021 ◽  
Vol 2021 ◽  
pp. 1-11
Author(s):  
Rebecca Nuwematsiko ◽  
Frederick Oporia ◽  
Juliet Nabirye ◽  
Abdullah Ali Halage ◽  
David Musoke ◽  
...  

Background. Although proper management of electronic waste (e-waste) is key to preventing disease and protecting the environment, there is no clear mechanism for its management in Uganda. This study assessed knowledge, perceptions, and practices of e-waste management among consumers in Kampala city, Uganda. Methods. We conducted a cross-sectional study among people who used, repaired, or sold electronics (consumers). Both quantitative and qualitative methods of data collection using a sequential explanatory strategy were utilized. The quantitative survey involved 640 study participants, while qualitative interviews included 18 key informant interviews with stakeholders and six focus group discussions with 57 consumers. Modified Poisson regression was used to establish associations with corresponding 95% confidence intervals, and qualitative data analysed thematically. Results. Two-thirds (67.7%; 433/640) of electronics consumers had poor knowledge on the management of e-waste. More than three-quarters 79.1% (506) of the consumers had positive perceptions towards e-waste management. Consumers perceived e-waste as harmful to human health and the environment. Participants in informal employment were 0.96 times less likely to have positive perceptions towards e-waste management compared to those in formal employment (adjusted PR = 0.96, 95% CI: 0.93–0.99). Mobile phones and televisions were the most owned e-waste with only 7.96% (18/226) and 13.2% (7/53) disposed off, respectively. Selling e-waste to repair shops and donation were the common disposal options. Conclusion. Knowledge on proper e-waste management is poor among electronic consumers in Kampala, Uganda, though most have positive perceptions. There is need for increased awareness on e-waste management to prevent its effects on health and the environment. Special attention should be towards sensitisation on e-waste handling practices before disposal and final disposal options available.


Social Change ◽  
2003 ◽  
Vol 33 (2-3) ◽  
pp. 41-50 ◽  
Author(s):  
Bharati Chaturvedi

All recycling in India is undertaken by (and via) the informal sector. This sector includes waste-pickers, small middlemen, transporters, larger middlemen and Anally, reprocessors. These self-employed people play a very important role in urban waste management as they provide a service which the urban municipalities cannot provide given their current institutional framework. Although the sector of informal waste managers is critical to solid waste-handling in India, the sector is unable to optimise its work due to lack of social legitimacy or legal rights over waste-processing, which makes it vulnerable to intimidation. Additionally, due to lack of awareness and specific skills, as well as very poor working conditions and poor access to basic facilities, this sector has so far been unable to make its recycling efficient and profitable. With certain changes in the policies relating to recycling and ownership of waste, there can be a synergetic relationship between the recycling sector, the existing relevant laws, and waste-handling in India that can significantly improve the efficiency of the sector and enhance financial returns to the waste-pickers and reprocessors. Such policy changes as provision of legal rights over solid waste to waste-pickers and organisation of waste-pickers into cooperative groups, can further the interests of these marginalised groups and maximise their profits, in addition to substantially improving solid waste management in the city.


2021 ◽  
Vol 16 (3) ◽  
pp. 154-164
Author(s):  
Ms Krithiga ◽  
Sudharsana V ◽  
Sribalaji R ◽  
Snega C

Coronavirus, which was started provincially at Wuhan of China, has become a worldwide pandemic by affecting individuals of almost all the world. The developing pandemic of COVID-19 disease requires social distancing and individual cleanliness measures to secure general wellbeing. The aim of the present study is to evaluate the knowledge, attitude, practice and awareness of biomedical waste management in this pandemic situation among healthcare workers and medical students across Tamil Nadu. A cross sectional questionnaire survey was prepared to evaluate the knowledge regarding waste management and waste handling techniques. The survey found that most of the hospitals (50%) are using plastic containers for waste collection. Almost 79.7% of the respondents said they follow colour coding while disposing waste. When asked about exact category only few gave correct answers. Nearly 72.8% answered that they collect the Covid patient’s wastes separately. As coronavirus is a contagious disease, each healthcare worker should be trained in safe handling of wastes. From this survey, it is clear that training about safe handling of waste is needed among workers. This survey will help government and healthcare providers to handle this Covid pandemic successfully and more effectively.


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