Improvement in the Methodological Estimation of Sulfur Hexafluoride Use in Electrical Equipment for Malaysia’s National Greenhouse Gas Inventory
Abstract
:1. Introduction
1.1. Overview of SF6 gas
1.2. Need for an Improvement Plan for SF6 Emission Estimation for the National Greenhouse Gas Inventory
2. Literature Review
2.1. SF6 Sources in Malaysia
2.2. Review of the SF6 Regulation and Policy around the World
3. SF6 Emission Estimation Methodology
3.1. Tier 1 Method: IPCC 2006 Guidelines Versus IPCC 1996 Guidelines
Equipment Use Emissions + Equipment Disposal Emissions
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- Manufacturing emissions = manufacturing emission factor × total SF6 consumption by equipment manufacturers;
- ○
- Equipment installation emissions = installation emission factor × total nameplate capacity of new equipment filled on site (not at the factory);
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- Equipment use emissions = use emission factor × total nameplate capacity of installed equipment. Note: The use emission factor includes emissions due to leakage, servicing, and maintenance, as well as failures;
- ○
- Equipment disposal emissions = total nameplate capacity of retiring equipment × fraction of SF6 remaining at retirement.
- ○
- 2.G.1.a.—Manufacture of Electrical Equipment;
- ○
- 2.G.1.b.—Use of Electrical Equipment;
- ○
- 2.G.1.c.—Disposal of Electrical Equipment.
3.2. Emission Factor Selection
3.3. Activity Data Requirements
- ○
- Leak detection and repair;
- ○
- Use of recycling equipment;
- ○
- Employee education/training.
3.4. Current Improvement for Malaysia and Moving to Higher Methodological Tiers
- ○
- The Revised 1996 IPCC Guidelines mention only two methods of estimating emissions of SF6 gas from electrical equipment:
- ○
- A potential approach that equates emissions to chemical consumption;
- ○
- A simple emission factor-based approach that applies country-specific or global default emission factors to the quantities of SF6 gas in operating and retiring equipment, respectively.
- ○
- The Good Practice Guidance 2000 (GPG2000) [29] introduced three Tier 3 mass-balance methods and a more detailed Tier 2 emission factor-based approach that provides emission factors for each life cycle stage. In addition, the guidelines provided regional default emission factors for Tier 2;
- ○
- The 2006 IPCC Guidelines simplified the GPG2000 by replacing two Tier 3 mass-balance methods with a single flexible Tier 3 method that contains both mass-balance and emission-factor-based components, which are summarized as follows:
- ○
- The country-level mass-balance method was moved to the Quality Assurance/Quality Control (QA/QC) section;
- ○
- The method for estimating potential emissions was moved from the Methodological Choice discussion and into a separate section where it can be used for QA/QC;
- ○
- The potential emissions approach was replaced with the default emission-factor-based approach, which was moved from Tier 2 to Tier 1.
4. Transparency and Accuracy Inventory Reporting in Malaysia
5. Uncertainty Assessment
6. The Way Forward for Malaysia in SF6 Emission Estimation
- ○
- Further engagement with stakeholders, particularly the utility providers, because they are the main key to assessing data and information for the recalculation of the time series from 1990 to 2017 by using the 2006 IPCC Guidelines;
- ○
- Workshop by technical experts and government agencies on the SF6 gas outlook for the future, whether this gas will be retired or phased out gradually;
- ○
- Capacity-building activities to train all stakeholders in SF6 gas estimation;
- ○
- Develop a method of collecting data on SF6 gas handling and disposal because no disposal inventory systems are currently available to monitor the volume of SF6 gas leakage;
- ○
- Integrate SF6 gas with the Malaysian GHG Integrated Management System [32], which is a tool that enables GHG emission estimation and inventory compilation and contains an online emission database, a quality control system, documentation, and data archives for all stakeholders to utilize and plan their GHG emissions;
- ○
- Utilize the voluntary carbon market mechanism to encourage industries that use SF6 to voluntarily report their GHG emissions, including SF6 gas, for carbon tax incentives or carbon trading [33]. The guidelines will also assure industries that the emissions will not be double-counted when accounting for the achievement of Malaysia’s Nationally Determined Contributions under the Paris Agreement. The emission reduction from the IPPU is included in this aspect;
- ○
- Establish technical guidance on mitigation actions that can be adopted within facilities [34], including tracking SF6 gas in real time and utilizing high-accuracy weighing tools and mass flow scales to reduce discrepancies due to incorrect cylinder residual SF6 in recovery equipment;
- ○
- ○
- Provide regulation for the use of the gas, with reference to guidelines that have been implemented in other countries [36].
7. Conclusions
Author Contributions
Funding
Informed Consent Statement
Data Availability Statement
Acknowledgments
Conflicts of Interest
References
- Kyriakopoulos, G.L.; Sebos, I. Enhancing Climate Neutrality and Resilience through Coordinated Climate Action: Review of the Synergies between Mitigation and Adaptation Actions. Climate 2023, 11, 105. [Google Scholar] [CrossRef]
- Akkermans, S.; Martín-Ortega, J.L.; Sebos, I.; López-Blanco, M.J. Exploring long-term mitigation pathways for a net zero Tajikistan. Mitig. Adapt. Strateg. Glob. Chang. 2023, 28, 19. [Google Scholar] [CrossRef]
- Sebos, I.; Progiou, A.G.; Kallinikos, L. Methodological Framework for the Quantification of GHG Emission Reductions from Climate Change Mitigation Actions. Strateg. Plan. Energy Environ. 2020, 219–242. [Google Scholar] [CrossRef]
- Malaysia Biennial Update Report 3 to the UNFCCC. 2020. Available online: https://unfccc.int/sites/default/files/resource/MALAYSIA_BUR3-UNFCCC_Submission.pdf (accessed on 14 January 2022).
- Eggleston, H.S.; Buendia, L.; Miwa, K.; Ngara, T.; Tanabe, K. 2006 IPCC Guidelines for National Greenhouse Gas Inventories. In Industrial Processes and Product Use; Institute for Global Environmental Strategies: Kanagawa, Japan, 2006; Volume 3. [Google Scholar]
- Ali, R.; Daut, I.; Taib, S. A review on existing and future energy sources for electrical power generation in Malaysia. Renew. Sustain. Energy Rev. 2012, 16, 4047–4055. [Google Scholar] [CrossRef]
- Eggleston, S.; Walsh, M. Emission: Energy, Road Transport; Good Practice Guidance and Uncertainty Management in National Greenhouse Gas Inventories. 2006. Available online: https://www.ipcc-nggip.iges.or.jp/public/gp/bgp/2_3_Road_Transport.pdf (accessed on 16 December 2021).
- TNB ILSAS. SF6 Gas Management and Handling. Available online: https://tnbilsas.com.my/product/sf6-gas-management-and-handling/ (accessed on 25 November 2022).
- United States Environmental Protection Agency (EPA). Sulfur Hexafluoride Basics. Available online: https://www.epa.gov/eps-partnership/sulfur-hexafluoride-sf6-basics (accessed on 12 May 2022).
- SF6 Leak Detection in Enclosed GIS Substation. Available online: https://www.advancedenergy.com/globalassets/resources-root/application-notes/en-ge-sf6-leak-detection-application-note.pdf (accessed on 29 December 2022).
- Overview of SF6 Emissions Sources and Reduction Options; United States Environment Protection Agency (EPA): Washington, DC, USA, 2019. Available online: https://www.epa.gov/sites/default/files/2018-08/documents/12183_sf6_partnership_overview_v20_release_508.pdf (accessed on 11 January 2022).
- De La Fuente, D.; Rachel, A. Meidl and Michelle Michot Foss; SF6: The Little Gas That Could… Make Global Warming Worse; Forbes, 2021. Available online: https://www.forbes.com/sites/thebakersinstitute/2021/03/25/sf6-the-little-gas-that-could-make-global-warming-worse/?sh=24f4ff7722ad (accessed on 30 November 2022).
- European Parliament. Regulation (EU) No 517/2014 of the European Parliament and of the Council of 16 April 2014 on Fluorinated Greenhouse Gases and Repealing Regulation (EC) No 842/2006 Text with EEA Relevance; EUR-Lex, 2014; Available online: https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=celex%3A32014R0517 (accessed on 22 January 2022).
- United States Environmental Protection Agency. Greenhouse Gas Reporting Program (GHGRP); United States Environmental Protection Agency (EPA): Washington, DC, USA, 2011.
- The Government of Japan. Japan’s Fourth Biennial Report under the United Nations Framework Convention on Climate Change; United Nations Framework Convention on Climate Change (UNFCCC): Bonn, Germany, 2019.
- Sugimura, E.; Aoyama, T. The Situation of Reduction in SF6 Emission from Gas-Insulated Electrical Equipment in Japan; Environmental Protection Agency (EPA): Washington, DC, USA, 2016.
- The Government of the Republic of Korea. Third Biennial Update Report of the Republic of Korea; United Nations FrameworkConvention on Climate Change (UNFCCC): Bonn, Germany, 2019.
- Korea Emissions Trading Scheme; International Carbon Action Partnership, Korea, 2021. Available online: https://icapcarbonaction.com/system/files/ets_pdfs/icap-etsmap-factsheet-47.pdf (accessed on 24 March 2022).
- EconoTimes. KEPCO to Share CO2 Decomposition Tech to Korea National Railway; EconoTimes, 2021. Available online: https://www.econotimes.com/KEPCO-Inks-Deal-to-Share-CO2-Decomposition-Technology-with-Korea-National-Railway-1624263 (accessed on 10 April 2022).
- The Government of China. The People’s Republic of China Second Biennial Update Report on Climate Change; United Nations Framework Convention on Climate Change (UNFCCC): Bonn, Germany, 2018.
- Zhou, S.; Teng, F.; Tong, Q. Mitigating sulfur hexafluoride (SF6) emission from electrical equipment in China. Sustainability 2018, 10, 2402. [Google Scholar] [CrossRef]
- China Energy Research Society. Sulphur Hexafluoride Gas Statistical Investigation and Control Substation Working Group Kick-off Meeting; China Energy Research Society: China, 2021; Available online: https://www.cers.org.cn/site/content/8ceb86e1ecd70a2a57d4733c059dbbb8.html (accessed on 28 January 2022).
- Parthiban, A.; Gopal, A.A.R.; Siwayanan, P.; Chew, K.W. Disposal methods, health effects and emission regulations for sulfur hexafluoride and its by-products. J. Hazard. Mater. 2021, 417, 126107. [Google Scholar] [CrossRef] [PubMed]
- Maruyama, S.; Meguro, M. SF6 Gas Emission Reduction from Gas-Insulated Electrical Equipment in Japan. In Proceedings of the Conference on SF6 and the Environment: Emission Reduction Strategies in San Diego, San Diego, CA, USA, 2–3 November 2000. [Google Scholar]
- Wartmann, S.; Harnisch, J. Reductions of SF6 Emissions from High and Medium Voltage Electrical Equipment in Europe. Environ. Sci. 2005, 2, 273–281. [Google Scholar] [CrossRef]
- World Resources Institute (WRI). Policy and Action Standard: GHG Protocol. GHG Protocol. 2014. Available online: http://www.ghgprotocol.org/policy-and-action-standard%0Ahttp://ghgprotocol.org/policy-and-action-standard (accessed on 9 June 2022).
- Xu, C.; Zhou, T.; Chen, X.; Li, X.; Kang, C. Estimating of sulphur hexafluoride gas emission from electric equipment. In Proceedings of the 2011 1st International Conference on Electric Power Equipment—Switching Technology, ICEPE2011—Proceedings, Xi’an, China, 23–27 October 2011; pp. 299–303. [Google Scholar] [CrossRef]
- Australian National Audit Office. Accounting and Reporting of Australia’s Greenhouse Gas Emissions Estimates and Projections; Australia, 2017. Available online: https://www.anao.gov.au/work/performance-audit/accounting-reporting-australias-greenhouse-gas-emissions-estimates (accessed on 22 December 2021).
- Penman, J.; Kruger, D.; Galbally, I.E.; Hiraishi, T.; Nyenzi, B.; Emmanuel, S. Good Practice Guidance and Uncertainty Management in National Greenhouse Gas Inventories; IPCC: Geneva, Switzerland, 2000. [Google Scholar]
- Introduction to Transparency, United Nations Climate Change. Available online: https://unfccc.int/Transparency (accessed on 30 January 2022).
- Minutes of Meeting. Mutual Learning Discussion between Malaysia-Singapore. 16 January 2022.
- Malaysia Partners with Australia in Developing the Malaysian Greenhouse Gas Information Management System. 2022. Available online: https://www.malaysiakini.com/announcement/643678 (accessed on 4 January 2022).
- Ministry of Environment & Water National Guidance on Voluntary Carbon Market Mechanisms. Available online: https://www.kasa.gov.my/resources/alam-sekitar/National-Guidance-on-Voluntary-Carbon-Market-Mechanisms.pdf (accessed on 11 November 2022).
- Salinas, A.; Rothlisberger, L.; Dilo, C. Inc SF6 Inventory and Tracking Challenges. Available online: https://library.e.abb.com/public/c2da1f57809618eac12577d80050ffff/SF6_Brochure_AUABB_v5_2010_04_09.pdf (accessed on 23 May 2022).
- ABB Brochure. A Complete SF6 Gas Management Solution, in an Efficient and Environmentally Friendly Manner. Available online: https://library.e.abb.com/public/c2da1f57809618eac12577d80050ffff/SF6_Brochure_AUABB_v5_2010_04_09.pdf (accessed on 30 June 2022).
- Status of SF6 Regulation around the World. Available online: https://www.nuventura.com/post/status-of-sf6-regulation-around-the-world (accessed on 11 May 2022).
Sub-Category | Details | Accounted/Unaccounted |
---|---|---|
2B9 | Fluorochemical Production | Not occurring in Malaysia |
2C4 | Magnesium Production | Not occurring in Malaysia |
2E1 | Integrated Circuit or Semiconductor | Accounted using 2006 IPCC Guidelines |
2E2 | TFT Flat Panel Display | Not occurring in Malaysia |
2E3 | Photovoltaics | Accounted using 2006 IPCC Guidelines |
2G1 | Electrical Equipment | Accounted using Revised 1996 IPCC Guidelines |
2G2 | SF6 and PFCs from Other Product Uses (Military, Accelerators, Others) | Not occurring in Malaysia |
Phase | Manufacturing (Fraction SF6 Consumption by Manufacturers) | Use (Includes Leakage, Major Failures/Arc Faults, and Maintenance Losses) (Fraction per Year of Nameplate Capacity of All Equipment Installed) | Disposal (Fraction Nameplate Capacity of Disposed Equipment) | |
---|---|---|---|---|
Region | Lifetime (Years) | Fraction of Charge Remaining at Retirement | ||
Europe | 0.07 | 0.002 | >35 | 0.93 |
Japan | 0.29 | 0.007 | Not reported | 0.95 |
Phase | Manufacturing (Fraction SF6 Consumption by Manufacturers) | Use (Includes Leakage, Major Failures/Arc Faults, and Maintenance Losses) (Fraction per Year of Nameplate Capacity of All Equipment Installed) | Disposal (Fraction Nameplate Capacity Of Disposed Equipment) | |
---|---|---|---|---|
Region | Lifetime (Years) | Fraction of Charge Remaining at Retirement | ||
Europe | 0.085b | 0.026 | >35 | 0.95 |
Japan | 0.29b | 0.007 | Not reported | 0.95 |
Phase | Manufacturing (Fraction SF6 Consumption by Manufacturers) | Use (Includes Leakage, Major Failures/Arc Faults, and Maintenance Losses) (Fraction per Year of Nameplate Capacity of All Equipment Installed) | Disposal (Fraction Nameplate Capacity of Disposed Equipment) | |
---|---|---|---|---|
Region | Lifetime (Years) | Fraction of Charge Remaining at Retirement | ||
Japan | 0.29 | 0.007 | Not reported | 0.95 |
Sub-Category | Details | Stakeholders |
---|---|---|
2G1a | Manufacture of Electrical Equipment | Federation of Malaysian Manufacturers Malaysian Industrial Gases Manufacturers Group |
2G1b | Use of Electrical Equipment | Utility providers in Peninsular Malaysia and Sabah and Sarawak |
2G1c | Disposal of Electrical Equipment | Utility providers in Peninsular Malaysia and Sabah and Sarawak |
Phase | Manufacturing | Use (Includes Leakage, Major Failures/Are Faults, and Maintenance Losses) | Disposal | |
---|---|---|---|---|
Equipment Type | Lifetime (Years) | Fraction of Charge Remaining at Retirement | ||
Sealed-Pressure | ±20% | ±20% | −20%/+40% | Not Available |
Closed-Pressure | ±30% | ±30% | −10%/+40% | Not Available |
Gas-insulated Transformers | ±30% | ±30% | −10%/+40% | Not Available |
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Tan, E.S.; Pua, F.L.; Verayiah, R.; Syazalina, N. Improvement in the Methodological Estimation of Sulfur Hexafluoride Use in Electrical Equipment for Malaysia’s National Greenhouse Gas Inventory. Atmosphere 2023, 14, 956. https://doi.org/10.3390/atmos14060956
Tan ES, Pua FL, Verayiah R, Syazalina N. Improvement in the Methodological Estimation of Sulfur Hexafluoride Use in Electrical Equipment for Malaysia’s National Greenhouse Gas Inventory. Atmosphere. 2023; 14(6):956. https://doi.org/10.3390/atmos14060956
Chicago/Turabian StyleTan, Ee Sann, Fei Ling Pua, Renuga Verayiah, and Nurul Syazalina. 2023. "Improvement in the Methodological Estimation of Sulfur Hexafluoride Use in Electrical Equipment for Malaysia’s National Greenhouse Gas Inventory" Atmosphere 14, no. 6: 956. https://doi.org/10.3390/atmos14060956
APA StyleTan, E. S., Pua, F. L., Verayiah, R., & Syazalina, N. (2023). Improvement in the Methodological Estimation of Sulfur Hexafluoride Use in Electrical Equipment for Malaysia’s National Greenhouse Gas Inventory. Atmosphere, 14(6), 956. https://doi.org/10.3390/atmos14060956