Academic literature on the topic 'Waste paper Australia Grading'
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Journal articles on the topic "Waste paper Australia Grading"
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Strong, J. "Differences in carcass grading schemes used in the USA, Japan and Australia." Australian Journal of Experimental Agriculture 44, no. 7 (2004): 675. http://dx.doi.org/10.1071/ea02172.
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Over the past 30 years there has been increasing pressure for the establishment of a beef, quality grading system in Australia. During this time, many and varied options have been proposed and comparisons have often been made with the United States Department of Agriculture (USDA) and the Japanese Meat Grading Association (JMGA) systems. Australia has now developed a grading system that is driven by the consumer — Meat Standards Australia (MSA). Although some years (70+) behind the USDA, the Australian model has been scientifically proven to identify product that can achieve a guaranteed level of satisfaction to the consumer. While this paper evaluates the 3 systems and their specific operations, both the USDA and JMGA systems are compared with the potential performance of the MSA system applied on a cut by grade by cooking method basis.
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Edwards, Ferne, and Dave Mercer. "Food Waste in Australia: The Freegan Response." Sociological Review 60, no. 2_suppl (December 2012): 174–91. http://dx.doi.org/10.1111/1467-954x.12044.
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A common problem in all affluent societies, particularly in the retail sector, is the burgeoning issue of food waste. In this, Australia is no exception. However, to a large extent, the main focus of research in Australia to date has been on food waste at the household level. This paper focuses on the previous stage in the food life-cycle and examines the freegan practice of collecting and redistributing food discarded as ‘worthless’ by supermarket chains, in particular. For freegans, this is an act of choice, not need, to protest against issues of overconsumption and waste. The practice of freeganism has had multiple manifestations throughout history. It represents an alternative ethics of consumption and has multiple forms, embracing such issues as pesticide contamination, excessive labour exploitation, packaging and more. This paper reports on ongoing ethnographic research into two freegan subcultures in Australia: dumpster-divers and participation in the activities associated with ‘Food Not Bombs’. It complements freegan research conducted across the world while its analysis, applying theories of alternative food networks, food justice, diverse economies and concepts of autonomy, provides insights into contemporary forms of activism and social change around issues of food waste in Australia.
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Saimanova, Olga, Svetlana Teplykh, and Vadim Alpatov. "Methods of organizing work on construction and demolition waste recycling." BIO Web of Conferences 43 (2022): 03018. http://dx.doi.org/10.1051/bioconf/20224303018.
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The research is aimed at finding new ways that contribute to environmental improvement. It is evident that there is a great need at the moment to find optimal methods of construction and demolition waste recycling while renovating urban areas. The researchers examine the recycling method which is characterized as one of the most effective ways to solve the problem of construction waste disposal. In this paper the authors resort to the method of comparison as well as to graphical, tabular, and abstract-logical methods. They analyze two main methods used to carry out recycling operations: the first method involves recycling waste at the site of construction using mobile crushing plants and the second involves recycling at stationary crushing and grading complexes. Then the authors point out advantages and disadvantages of these methods and examine the efficiency of a stationary complex. The researchers also calculate the prime cost of construction waste processing at a stationary crushing and grading complex and its payback period. It is concluded that the use of a stationary complex for construction and demolition waste recycling is technically and economically feasible.
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Pickin, J. G., S. T. S. Yuen, and H. Hennings. "Waste management options to reduce greenhouse gas emissions from paper in Australia." Atmospheric Environment 36, no. 4 (February 2002): 741–52. http://dx.doi.org/10.1016/s1352-2310(01)00532-5.
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Borazjani, Sara, David Kulikowski, Khalid Amrouch, and Pavel Bedrikovetsky. "Composition Changes of Hydrocarbons during Secondary Petroleum Migration (Case Study in Cooper Basin, Australia)." Geosciences 9, no. 2 (February 3, 2019): 78. http://dx.doi.org/10.3390/geosciences9020078.
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The reliable mathematical modelling of secondary petroleum migration that incorporates structural geology and mature source rocks in the basin model, allows for prediction of the reservoir location, yielding the significant enhancement of the probability of exploration success. We investigate secondary petroleum migration with a significant composition difference between the source and oil pools. In our case study, the secondary migration period is significantly shorter than the time of the hydrocarbon pulse generation. Therefore, neither adsorption nor dispersion of components can explain the concentration difference between the source rock and the reservoir. For the first time, the present paper proposes deep bed filtration of hydrocarbons with component kinetics retention by the rock as a physics mechanism explaining compositional grading. Introduction of the component capture rate into mass balance transport equation facilitates matching the concentration difference for heavy hydrocarbons, and the tuned filtration coefficients vary in their common range. The obtained values of filtration coefficients monotonically increase with molecular weight and consequently affects the size of the oleic component, as predicted by the analytical model of deep bed filtration. The modelling shows a negligible effect of component dispersion on the compositional grading.
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Mao, Peng Jun, Lu Liu, Jun Wang, and Chun Yan Hu. "A Study on Gray Relational Analysis of Many Factor Weights in Tobacco Leaves Classification." Advanced Materials Research 139-141 (October 2010): 1728–31. http://dx.doi.org/10.4028/www.scientific.net/amr.139-141.1728.
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For the nine characteristic factors of tobacco leaf grading standards have different degree of influence on final grading results and lack of objective evaluation method, in this paper, we applied the gray relational analysis method to determine the weight of tobacco leaf factors in every grade, which calculate the gray relational analysis of nine characteristic factors: such as hue, lightness value, chroma, length, leaf structure, waste, oil, maturity and body. The gray relation was normalized to get the weight of the nine factors in tobacco leaf classification. By contrasted with the subjective evaluation of five experts in tobacco field, the calculation results are basically consistent with the experts’ recommendation. It illustrates that the application of Grey relational method to calculate influence ability of flue-cured tobacco grading factors is feasible. This method eliminates the subjectivity of the weight of each factor and can make the results more realistic.
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Earnshaw, C., and A. Grigg. "Cooperative facilitation and implementation of major trade-waste agreements." Water Supply 3, no. 1-2 (March 1, 2003): 419–23. http://dx.doi.org/10.2166/ws.2003.0133.
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This paper provides a review of the trade waste agreement facilitation consultancy that Wagga Wagga City Council, Australia, has provided to major trade-waste sources since March 2000. The paper provides an insight into the role of a third-party facilitator in the establishment implementation, and conversion of an interim trade-waste agreement into a sustainable, term-based trade-waste agreement.
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Martin, Linley, and Marian Mahat. "The Assessment of Learning Outcomes in Australia." AERA Open 3, no. 1 (January 2017): 233285841668890. http://dx.doi.org/10.1177/2332858416688904.
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Since 2009 there has been increased interest in Australian universities’ ability to demonstrate that their students have acquired knowledge and skills as specified by them in the form of graduate attributes or institutional learning outcomes. This paper describes research undertaken in Australia to identify a comprehensive set of generalized learning outcomes for undergraduate study and a set of criterion-based standards to assist in grading of achievement of those outcomes. It was discovered that although Australian universities document institutional- and course-based learning outcomes for their programs, they generally do not assess students at this level. Instead, the majority of assessment of learning outcomes is at the subject level, and frequently these outcomes do not align well with the course- or institutional-based outcomes that have also been specified. In spite of this, it appears possible to identify generalized assessment tasks for subjects and use constructive alignment between subjects, course curriculum, and chosen course-based learning outcomes, which could be used to reliably measure course outcomes and compare results between universities. These developments are framed in terms of the assessment transparency framework, which provides insight into the current “as-is” situation as well as an indication of what is needed to move learning outcomes assessment toward a fully implemented “ideal” across the higher education sector.
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Mohd Pauzi, Nurul Noraziemah, Maslina Jamil, Roszilah Hamid, and Muhammad Fauzi Mohd Zain. "Influence of Morphology of Cathode-Ray Tube Glass as Coarse Aggregates on Compressive Strength and Water Absorption of Concrete." Solid State Phenomena 280 (August 2018): 399–409. http://dx.doi.org/10.4028/www.scientific.net/ssp.280.399.
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The study on the substitution for natural coarse aggregates using waste CRT funnel glass in spherically shapes is still limited. In this paper, the waste CRT glass has been processed to form a spherical CRT glass (GS) and crushed CRT glass (GC), which were used as a coarse aggregate in concrete production. Results indicated that the inclusion of GS and GC has lower the compressive strength and decreased the rate of capillary water absorption of concrete. It was demonstrated that the morphology properties of GS and GC (shape, surface texture, size, grading) is significantly affected the concrete properties.
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Korwa, Johni R. V. "The Resistance Movement of Aboriginal People To Fight Against The Plans For A Nuclear Waste Dump In South Australia." Papua Law Journal 1, no. 2 (October 25, 2018): 271–92. http://dx.doi.org/10.31957/plj.v1i2.592.
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Aborigine is the indigenous people of Australia who have attempted to oppose the proposal for South Australia to host an international nuclear dump. Even though the rights of indigenous people have been recognized by the United Nations Declaration on the Rights of Indigenous Peoples, the treatment they receive are not in accordance with the standard of living. The object of this this paper is to examine the struggle of Aboriginal Australia as indigenous people who seek to ensure their basic rights to clean environment from nuclear waste by using normative juridical method. The results of the paper show that Aboriginal people have commenced their struggle by the formation of global movement in the form of local campaign (Kupa Piti Kungka Juta), Australian Nuclear Free Alliance (ANFA), in collaboration with Amnesty International and the International Campaign to Abolish Nuclear Weapons (ICAN). All efforts are made to pressure the Australian government not to consider South Australia as a nuclear waste disposal site. This is because nuclear waste can have an impact on public health and environmental damage, trigger nuclear war, and become a threat to the land of Aboriginal people.
Dissertations / Theses on the topic "Waste paper Australia Grading"
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Wood, Connell. "Examination of the potential for reuse of chromated copper arsenate wood waste by nitric acid pulping." Thesis, 2011. http://hdl.handle.net/2440/69311.
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Treated timber is a widely used construction material, as it is resistant to insect and fungal attack. The most commonly used timber treatment solution worldwide is copper chromium arsenate (CCA) pressure treated wood (APVMA 2005a). Environmental and health issues have been raised over CCA wood, with major particular concern raised on the possibilities of arsenic in the wood potentially leaching out. The Australian Pesticides and Veterinary Medicines Authority (APVMA) have limited its usage to minimise human contact with CCA structures (APVMA 2005a). In South Australia, CCA applications increased dramatically with the expansion of the winery industry where CCA treated timber posts were widely used for vineyard trellises. Due to the mechanical method by which most grapes are harvested, roughly 2% of all posts are broken and require disposal annually (SAEPA 2008). The Environmental Protection Agency of South Australia (EPASA) have placed restrictions on CCA disposal from vineyards (SAEPA 2004) and waste CCA stock is either stockpiled or sent to specially lined landfills incurring an estimated cost penalty of over $AU 200 per tonne¹ . Clearly, improved CCA treatment technologies must be developed to reduce (or eliminate) the cost of CCA disposal and to the footprint of land filled waste. CCA timber disposal techniques currently being researched are focussed primarily on thermal and biological routes. Thermal techniques are problematic due to volatilization of the arsenic in the product, whilst biological removal techniques are very slow. Chemical remediation is an alternative and attractive disposal technique of interest using various acids to extract copper, chromium and arsenic. Nitric acid has been shown to be particularly effective (Honda, Kanjo et al. 1991), although research has been limited. Nitric acid is also used in one method of paper pulp production, and as such, there is the potential for a combined CCA extraction and paper pulp process. This has the attraction of turning a waste in a value added product. The kinetics of copper, chromium and arsenic dissolution in nitric acid has been examined in this thesis. A key finding of the work identifies the size of CCA wood particles as the dominant factor affecting the extraction rate, whilst temperature and acid concentration only provide a minor effect. The extraction rate for all elements from CCA wood using nitric acid generally follow 2nd order kinetics. Concurrently, a study examining wood chips of various ages taken from vineyards was performed using chip sizes typical required for paper production. It was found that despite significant variations in the concentration profile of CCA in posts, a general model based on the fraction of each element could be created for posts of all ages. Over an 8 hour period, 65-80% of chromium, 50-70% of copper and 75-90% of arsenic was extracted from all posts. Given the excellent extraction observed under relatively simple nitric acid extraction, further studies on the applicability of nitric pulping for CCA remediation are recommended. Minimizing chip size subject to fibre size constraints in paper production is key to improved removal and additional means for enhancing chip surface area are identified. Other stages present in paper pulping process may solublize additional CCA and these warrant further investigation. A basic economic estimation was undertaken, where it was found that creating paper pulp from CCA wood could be economically feasible, but will require further research to determine the expected costs and revenues involved. The nature of the CCA wood waste was investigated. The expectation was that CCA posts would contain relatively consistent concentration profiles for copper, chromium and arsenic. However, it was observed that the concentrations were quite varied. Further, several posts produced during the wine boom in South Australia were very poorly treated with very poor penetration of the preservatives into the posts. This could result in a reduced lifetime for the posts, and potentially higher arsenic leaching than expected. It is also recommended that the frequency of these poorly treated posts be determined, as three of the six posts examined from this period were potentially poorly treated, implying it may be significant and unexpected problem. In addition, a study should be initiated to determine if these poorly treated posts are leaching higher levels of arsenic, by both a study of the surrounding soil and a simulated rainfall leaching experiment. Based on the concern that more arsenic leached from pieces of CCA post left in deionised water than expected, an experiment on posts of various ages revealed that over a 100 day period, 1.5-3g of elemental arsenic could leach from a submerged CCA treated post. There is a serious concern that with CCA posts being landfilled, they will be exposed to water contact over the wet months, resulting in high arsenic leaching. It is theorised that this high arsenic leaching is due to insufficient chromium in the CCA solution. Previous studies have recommended higher chromium to arsenic ratios than are currently employed in Australia. Further studies on the extent to which this leaching can occur in landfill are recommended.
¹ Personal communication with John Blumson, Zero Waste South Australia, 22/7/08.Thesis (Ph.D.) -- University of Adelaide, School of Chemical Engineering, 2011
Books on the topic "Waste paper Australia Grading"
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Western Australia. Dept. of Environmental Protection. Contaminated sites: Assessment and management of contaminated land and groundwater in Western Australia : a public position paper. Perth, W.A: Dept. of Environmental Protection, 1997.
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Pulp, The, and Waste Paper Research Group. The 2000 Import and Export Market for Pulp and Waste Paper in Australia (World Trade Report). 2nd ed. Icon Group International, Inc., 2001.
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Paper, The Waste, and Paperboard for Use in Paper-Making Research Group. The 2000 Import and Export Market for Waste Paper and Paperboard for Use in Paper-making in Australia (World Trade Report). 2nd ed. Icon Group International, Inc., 2001.
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Australia. Waste disposal: A report from the Senate Standing Committee on Environment, Recreation and the Arts (Parliamentary paper / Parliament of the Commonwealth of Australia). Parliament of the Commonwealth of Australia, 1994.
Find full textConference papers on the topic "Waste paper Australia Grading"
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Schwarz, Stephen C., and Leah K. Richter. "Brightstar Solid Waste and Energy Recycling Facility: An Innovative Waste to Energy Technology." In 10th Annual North American Waste-to-Energy Conference. ASMEDC, 2002. http://dx.doi.org/10.1115/nawtec10-1012.
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The Brightstar Environmental Solid Waste and Energy Recycling Facility (SWERF) is a municipal solid waste (MSW) to energy facility utilizing a gasification (pyrolysis) process. At this time, the only operational SWERF is in New South Wales, Australia. While pyrolysis of MSW is not in itself new, the Brightstar technology is believed to have reached a sufficient level of development, and to incorporate sufficient new features, to qualify as new and cutting edge. This paper presents findings from a trip to Australia to inspect the facility, as well as the results of a Request for Proposals process for a municipal client in Florida. Analysis includes process, environmental, and economic factors.
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Waggitt, Peter, and Mike Fawcett. "Completion of the South Alligator Valley Remediation: Northern Territory, Australia." In ASME 2009 12th International Conference on Environmental Remediation and Radioactive Waste Management. ASMEDC, 2009. http://dx.doi.org/10.1115/icem2009-16198.
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13 uranium mines operated in the South Alligator Valley of Australia’s Northern Territory between 1953 and 1963. At the end of operations the mines, and associated infrastructure, were simply abandoned. As this activity preceded environmental legislation by about 15 years there was neither any obligation, nor attempt, at remediation. In the 1980s it was decided that the whole area should become an extension of the adjacent World Heritage, Kakadu National Park. As a result the Commonwealth Government made an inventory of the abandoned mines and associated facilities in 1986. This established the size and scope of the liability and formed the framework for a possible future remediation project. The initial program for the reduction of physical and radiological hazards at each of the identified sites was formulated in 1989 and the works took place from 1990 to 1992. But even at this time, as throughout much of the valley’s history, little attention was being paid to the long term aspirations of traditional land owners. The traditional Aboriginal owners, the Gunlom Land Trust, were granted freehold Native Title to the area in 1996. They immediately leased the land back to the Commonwealth Government so it would remain a part of Kakadu National Park, but under joint management. One condition of the lease required that all evidence of former mining activity be remediated by 2015. The consultation, and subsequent planning processes, for a final remediation program began in 1997. A plan was agreed in 2003 and, after funding was granted in 2005, works implementation commenced in 2007. An earlier paper described the planning and consultation stages, experience involving the cleaning up of remant uranium mill tailings and other mining residues; and the successful implementation of the initial remediation works. This paper deals with the final planning and design processes to complete the remediation programme, which is due to occur in 2009. The issues of final containment design and long term stewardship are addressed in the paper as well as some comments on lessons learned through the life of the project.
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Waggit, Peter W., and Alan R. Hughes. "History of Groundwater Chemistry Changes (1979–2001) at the Nabarlek Uranium Mine, Australia." In ASME 2003 9th International Conference on Radioactive Waste Management and Environmental Remediation. ASMEDC, 2003. http://dx.doi.org/10.1115/icem2003-4640.
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The Nabarlek uranium mine is located in the Alligator Rivers Region of the Northern Territory of Australia. The site lies in the wet/dry topics with an annual rainfall of about 1400mm, which falls between October and April. The site operated as a “no release” mine and mill between 1979 and 1988 after which time the facility was mothballed until decommissioning was required by the Supervising Authorities in 1994. The dismantling of the mill and rehabilitation earthworks were completed in time for the onset of the 1995–96 wet season. During the operational phase accumulation of excess water resulted in irrigation of waste water being allowed in areas of natural forest bushland. The practice resulted in adverse impacts being observed, including a high level of tree deaths in the forest and degradation of water quality in both ground and surface waters in the vicinity. A comprehensive environmental monitoring programme was in place throughout the operating and rehabilitation phases of the mine’s life, which continues, albeit at a reduced level. Revegetation of the site, including the former irrigation areas, is being observed to ascertain if the site can be handed back to the Aboriginal Traditional Owners. A comprehensive review of proximal water sampling points was undertaken in 2001 and the data used to provide a snapshot of water quality to assist with modelling the long term prognosis for the water resources in the area. While exhibiting detectable effects of mining activities, water in most of the monitoring bores now meets Australian drinking water guideline levels. The paper reviews the history of the site and examines the accumulated data on water quality for the site to show how the situation is changing with time. The paper also presents an assessment of the long term future of the site in respect of water quality.
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Sood, T., and A. Gurmu. "Reusing and repurposing of glass waste: A literature review." In 10th World Construction Symposium. Building Economics and Management Research Unit (BEMRU), University of Moratuwa, 2022. http://dx.doi.org/10.31705/wcs.2022.56.
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An increase in demolition activities has led to the generation of large amounts of glass waste. Due to its non-biodegradable nature, glass can stay in landfills for longer periods without decomposition; thus, it occupies a large volume of landfills. This study aimed to analyze the potential reuses and repurposing of glass waste in the construction industry. A systematic review of the literature was conducted, and secondary data were extracted. The data were analyzed qualitatively to achieve the objective of the study. The generation of glass waste in four different parts of the world, namely: Hong Kong, Australia, Europe and the USA has been studied to get an estimate for the increase in glass waste trends. The generation of glass waste saw a downfall from 2006 to 2010, was then steady from 2011 to 2016 and then slightly rose. A high volume of glass waste in landfills and its non-biodegradable nature has made it essential for the discovery of new methods of reuse and recycling of glass waste. Some of the potential reuse and repurposing options include Aggregate for Concrete, Filtration Media, Glass Fibres, Blast Abrasive, Roof Coating, Ceramic Based Products, Burnt Bricks, Low-Temperature Stoneware Tiles, Insulation, and Decorative Materials. The paper provides useful information to various stakeholders in the construction industry to understand how and where glass waste can be reused.
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Lehane, Barry M., J. Antonio H. Carraro, Nathalie Boukpeti, and Sarah Elkhatib. "Mechanical Response of Two Carbonate Sediments From Australia’s North West Shelf." In ASME 2014 33rd International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/omae2014-23340.
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The carbonate sediments found offshore on the North West Shelf of Australia can generally be described as silts with varying proportions of clay-sized and sand-sized carbonate particles. This paper investigates the undrained shearing response (as measured under simple shear and triaxial conditions) of two sediments with different grading curves. The importance of the fines content in controlling the density and hence dilatancy and undrained strength of the materials is demonstrated. The paper discusses the importance of fabric to the behavior of these soils and provides guidance on how undrained strengths of soils of this nature may be assessed with a knowledge of a material’s in-situ water content (or void ratio) and composition.
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Joshy, Hanna C., Mansoor Ali K, Rameez Z, Sarath S, and Ramaswamy K. P. "A Suitability Study of Using Crushed Fluorescent Lamp Waste as Fine Aggregates." In International Web Conference in Civil Engineering for a Sustainable Planet. AIJR Publisher, 2021. http://dx.doi.org/10.21467/proceedings.112.42.
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Fluorescent lamp wastes are one of the discarded electrical devices. These lamp wastes pose serious health concerns, and require extreme care in its disposal to avoid any adverse impacts. Also, with the widespread use of energy efficient LED lamps for lighting purposes, environmental concerns related to disposal of used mercury containing fluorescent lamps have become progressively important. This paper explores the possibility of replacement of fine aggregates in mortar with different proportions of fluorescent lamp wastes in order to find the optimum percentage of replacement to get better properties. Fluorescent lamp wastes were collected and crushed to the grading of fine aggregates. Compressive strength and bulk density of mortar cubes with 0%, 25%, 50%, 75% and 100% replacement of fine aggregates with fluorescent lamp wastes were evaluated after 7 days of initial curing. The compressive strength and bulk density of mortar was found to be decreasing with increasing percentage of lamp waste added. The replacement of fine aggregate by 25% lamp waste has greater strength compared to other proportions. Bulk density was found to be lesser at higher replacement levels and can be tried in producing light weight mortar. The utilization of lamp waste in mortar/concrete is a noble attempt in reducing the negative impact of lamp wastes on the environment
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Smith-Briggs, Jane, Dave Wells, Tommy Green, Andy Baker, Martin Kelly, and Richard Cummings. "The Australian National Radioactive Waste Repository: Environmental Impact Statement and Radiological Risk Assessment." In ASME 2003 9th International Conference on Radioactive Waste Management and Environmental Remediation. ASMEDC, 2003. http://dx.doi.org/10.1115/icem2003-4865.
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The Environmental Impact Statement (EIS) for the proposed Australian National Repository for low and short-lived intermediate level radioactive waste was submitted to Environment Australia for approval in the summer of 2002 and has subsequently undergone a consultancy phase with comments sought from all relevant stakeholders. The consultancy period is now closed and responses to the comments have been prepared. This paper describes some of the issues relevant to determining the radiological risk associated with the repository to meet the requirements of the EIS. These include a brief description of the three proposed sites, a description of the proposed trench design, an analysis of the radioactive waste inventory, the proposed approach to developing waste acceptance criteria (WAC) and the approach taken to determine radiological risks during the post-institutional control phase. The three potential sites for the repository are located near the Australian Department of Defence site at Woomera, South Australia. One site is inside the Defense site and two are located nearby, but outside of the site perimeter. All have very similar, but not identical, topographical, geological and hydrogeological characteristics. A very simple trench design has been proposed 15 m deep and with 5 m of cover. One possible variant may be the construction of deeper borehole type vaults to dispose of the more active radioactive sources. A breakdown of the current and predicted future inventory will be presented. The current wastes are dominated in terms of volume by some contaminated soils, resulting from experiments to extract U and Th, and by the operational wastes from the HIFAR research reactor at ANSTO. A significant proportion of the radionuclide inventory is associated with small volumes of sources held by industry, medical, research and defence organisations. The proposed WAC will be described. These are based on the current Australian guidelines and best international practice. The preliminary radiological risk assessment considered the post-institutional control phase in detail with some 12 scenarios being assessed. These include the impact of potential climate change in the region. The results from the risk assessment will be presented and discussed. The assessment work is continuing and will support the license application for construction and operation of the site. Please note that this is not the final assessment for the licence application.
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Chamizo, David J., Dean R. Campbell, Eric P. Jas, and Jay R. Ryan. "Rock Berm Design for Pipeline Stability." In ASME 2012 31st International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/omae2012-83551.
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Stabilizing large diameter natural gas pipelines on the seabed against extreme hydrodynamic loading conditions has proven to be challenging in the northwest of Australia. Tropical storms, which affect the area annually between November and April, can generate wave heights exceeding 30 m and storm steady state currents of 2 m/s or more. Consequently, in shallow water depths, typically less than 40–60 m, subsea pipelines can be subjected to very high hydrodynamic loads, potentially causing significant lateral movement. To mitigate the risk of the pipeline suffering mechanical damage due to excessive lateral movement, quarried and graded rock is often dumped over the pipeline as a secondary stabilization solution. In order to satisfy functional requirements, the rock berm must comprise of a sufficiently large rock grading size and berm volume to withstand the design hydrodynamic loading such that the pipeline cannot break out of the berm. The design of rock berms for pipeline secondary stabilization has traditionally followed a deterministic approach that uses empirical equations for preliminary rock sizing, followed by small-scale physical modeling for design verification and optimization. Whilst the traditional approach can be effective in producing a robust rock berm design, opportunities for further optimization are inhibited by a lack of available data and an imperfect understanding of the failure mechanisms. This paper presents an overview of an improved approach for rock berm design optimization. A general overview of rock berms, the design principles, benefits and risks are also presented.
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Nasiri Zahed, Masoud, Alastair Punler, Clare Purkis, Aaron Boase, Steven Smillie, Mark Duff, Fraser Park, and James Cobb. "High Performance and Recyclability of WBM on the GWF-3 Project." In SPE Asia Pacific Oil & Gas Conference and Exhibition. SPE, 2022. http://dx.doi.org/10.2118/210680-ms.
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Abstract The four well GWF-3 development project offshore Western Australia has used Water Based Mud (WBM) in the 12 ¼ in. section to drill through the same reactive clay formations which, on off-set wells, were historically drilled with Synthetic Based Mud (SBM). The GWF-3 project well design was based on the learnings from the GWF-2 development project completed in 2017. The typical well design required a 36 in. conductor, 13 ⅝ in. casing, highly deviated 12 ¼ in. section through the Muderong shale interval and then completing the well in an 8 ½ in. hole section. This paper describes the approach to the drilling fluids design and reviews the performance of the WBM on these wells, focusing on its salinity and recyclability. As part of the change from SBM to WBM, a fundamental re-design of the Solids Control Equipment on board the drilling rig was also carried out. The SBM cuttings treatment system was removed from the rig, a Big Bowl Centrifuge was installed, and modifications were made to the surface flow lines. The installation of the Big Bowl Centrifuge was a waste minimisation initiative, and the surface flow line modifications were made to assist in the reduction of rig time spent on the displacement and re-conditioning of the drilling and completion fluids.