Reducing energy consumption for seawater desalination design,holistic therapies wakefield,energy low ltd haverhill 2014 - PDF 2016

admin 01.02.2014

We have always believed it is a driving force towards improving the standard of living and economic stability for future generations, in line with the Abu Dhabi Vision 2030. In compliance with ADNOC directives, we are committed to managing sustainability as part of the broader health, safety, and environment (HSE) commitments involving, among others, climate change and GHG emissions reduction, environmental protection, and resource use efficiency. ZADCO is aware of the impact of GHG emissions on the global environment, and the concerns that this generates in all sectors. Our GHG emissions inventory addresses the most relevant emissions concerning our industry operations, namely carbon dioxide (CO2), methane (CH4), and nitrous oxide (N2O). We report our GHG emissions as a combination of CO2 and other GHGs and present them in units of CO2 equivalent (CO2e). This year, our operations resulted in 1,394,709 tCO2e of direct GHG emissions (Scope 1) and 642 tCO2e of indirect GHG emissions (Scope 2).
Our operations also generate emissions of nitrogen oxides (NOX), sulfur oxides (SOX), volatile organic compounds (VOC), particulate matter (PM), and stack and fugitive emissions, which constitute about 1% of the total emissions. Due to the increase in ongoing construction projects, the amount of GHG emissions has grown in 2013, as shown in Trend in total direct and indirect GHG emissions (ktCO2e) chart.
This year, we have taken actions (see heat recovery project in Zirku and UAD compressor project) to reduce our GHG emissions.
In line with the UAE’s commitment under the Kyoto Protocol to stabilise GHG emissions to mitigate the adverse impacts of climate change, ZADCO, in collaboration with Masdar, sought to identify the potential for project registration under the Clean Development Mechanism (CDM) of the United Nations Framework Convention on Climate Change (UNFCCC). Two projects had been initially identified with potential for CDM registration, namely Flue Gas Waste Heat Recovery in Zirku and Flare Gas Recovery at UAD Platform.
The assessment of the latter indicated that, over five to six years, the high fuel gas demand at UAD will cause a reduction in flared gas. The flare system in our processing and production facilities is a critical safety unit designed to prevent overpressure and protect the equipment during process upsets as well as start-ups and shutdowns of the trains. ZADCO strives towards the implementation of a zero flaring policy during normal operations. Venting volumes are relatively low compared to flaring (about 1%) and are managed by protocols to ensure the safety of our personnel and operations. Following the Montreal Protocol, we have phased out the use of halon in all areas of our operations, except in Upper Zakum field and two crude oil storage tanks on Zirku Island. While considering global trends in sustainability for the oil and gas sector, taking into account the regional and local contexts of their operations, ZADCO has adopted many initiatives, making tremendous efforts towards the consolidation of sustainable development, the reduction in energy consumption, and the availability of sustainable energy. The energy management study is expected to be completed by May 2015, and, consequently our energy management system will be put forward for ISO 50001 certification. In 2013, ZADCO tailored the running hours of the main crude oil pumps to match loading demands, reducing energy consumption on Zirku Island by 27,474 GJ.
Our performance in 2013 shows our ongoing commitment to minimising our impact on important water resources. Our operations this year resulted in the withdrawal of 139,864,538 m? of sea water, a reduction of almost two million m? on the previous year, despite increased production.
ZADCO continues to implement measures to reduce water consumption, such as the installation of water saving devices in our living quarters. ZADCO strives to prevent oil and chemical spills and, should they happen, to control and mitigate their impact.

At ZADCO we recognise our responsibility to the environment where we operate and we take a proactive approach towards protecting biodiversity of the natural areas surrounding us. Biodiversity related data have been collated (georeferenced) into our in-house GIS mapping tool, ECOGIS. Our one square kilometre protected area on Zirku Island is considered a priority for our conservation efforts. Other species in habitats identified as affected by ZADCO’s Operations include one classified vulnerable by the IUCN Red list , the Socotra cormorant, and 154 of lesser concern, such as the red-billed tropic bird and osprey. Our commitment to protecting the natural environment is further highlighted in our HSE policy. In-line with our overall environmental enhancement programmes, ZADCO has initiated a flagship project which involves establishing artificial reefs using the drill cuttings from UZ750K drilling operations. ZADCO is analysing the findings from the pilot study to determine the requirements for building the artificial reefs. ZADCO’s waste minimisation strategy emphasises options for reuse, recycling, and recovery over other disposal options. In an attempt to reduce materials used, ZADCO, in collaboration with ADMA, took the initiative to explore the feasibility of utilising excess rocks and sand generated from terrain levelling activities currently undertaken on Zirku Island as part of the Satah Al Razboot project.
Based on previous years’ success in the use of treated wastewater for irrigation purposes, we continue to foster the greening of portions of the island while achieving a significant reduction in the consumption of limited resources. In line with ZADCO’s HSE objectives, we invested significantly in managing and mitigating our environmental impacts. All environmental aspects related to ZADCO’s operations are managed through the company’s health, safety and environmental management system (HSEMS), which is aligned with ADNOC HSEMS and oil and gas industry best practices.
Increasing the size of our operations and striving to find ways to minimise our emissions is a challenge we face daily – and one we take it into consideration in all decisions regarding any future development. These have resulted in a reduction of 14,494 tCO2e of GHG emissions through improved energy efficiency and a reduction of 20,983 tCO2e through reduced flaring and venting. For the former, ZADCO reviewed and commented on the documents provided by Masdar, including the project design document, emissions reduction calculation, financial analysis, and common practice analysis. Therefore, the overall volume of gas recovery and the associated carbon emissions reduction will diminish. Our goal is to achieve reductions in flaring rates while ensuring optimal safety and productivity. The phasing out of halon in Upper Zakum is expected by 2016 and of Zirku’s oil tanks as part of tanks refurbishment.
Total energy consumption in 2013 was 15,569,710 GJ , including 3,040 GJ of indirect energy. At ZADCO, most of our water needs are met by using seawater, representing 99% of the total water used for our operating requirements.
Our oil spill mapping software, OILMAP, facilitates spill response through identifying sensitive areas in the vicinity of a spill. Biodiversity considerations are integrated in our baseline surveys and environmental impact assessments for assessing potential risks arising from our operational activities early in the conceptual stages of projects. Awareness and training sessions were delivered to our staff to disseminate biodiversity data and considerations and ensure they are taken into account in the planning phases of projects.

ZADCO conducted a pilot study that assessed the viability of using the drill cuttings to create a durable and environmentally inert structure as a long-term medium for marine colonisation by using two types of drill cuttings – water-based muds and indirect thermal desorption mud.
This year, our operations generated 9,790 tons of hazardous waste and 5,094 tons of non-hazardous waste. The excess material has been used to generate new flat areas amid Zirku Mountains and in the sea to the south of our jetty. In 2013, our total environmental expenditures were AED 24.5 million, a 26% increase from 2012.
By the end of 2014, ZADCO plans to communicate with stakeholders as well as engage a third-party for validation. Driven by the initiative to reduce GHG emissions, this was successfully accomplished in 2013.
Most of the total water withdrawn is used as cooling water which is subsequently returned to the sea after undergoing treatment before discharge to ensure compliance with regulatory discharge limits. This area is identified as a regular destination of the hawksbill turtle during the nesting season. The initiative has resulted in the reduction of 150,000 tons of materials and will create significant spaces on Zirku Island to sustain ZADCO’s future plans such as contractor camps, materials laydown yards, waste management area, refuge area, etc. After being treated to reduce oil levels, the treated produced wastewater is injected into subsurface formations so that no water bodies are considered to be significantly affected.
Accordingly, ZADCO decided to proceed with CDM registration for Zirku’s Flue Gas Waste Heat Recovery project only. We aim to continue our flaring reduction aspirations by ensuring the consideration of efficient flaring systems at the design phase of new projects. This year, 14 rounds of training, using Tier 1 response equipment, have been delivered to a total of 156 oil spill responders. It is recognised by the IUCN as a critically endangered species and our personnel on the island have cleaned the beach and the nesting areas. As a good practice, ZADCO is reusing the drilling wastes generated from non-aqueous drilling mud and cuttings. Process effluents of five million m? and 127,839 m? of cooling water are discharged to sea in line with ADNOC’s effluent discharge limits. Despite a significant increase in the amount of product processed in 2013, our efforts to reduce flaring and venting resulted in a reduction of almost three million m? of hydrocarbon compared to 2012. Effluent quality is monitored periodically to ensure compliance with standards and regulations. Operations this year resulted in the flaring of 28,484,259 m? of hydrocarbon, with 406,347 m? of this continuously vented.

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