Decision 78/5

Following discussions in the contact group, the Executive Committee decided:

1. To take note of the key aspects related to HFC-23 by-product-control technologies contained in documents UNEP/OzL.Pro/ExCom/78/9 and UNEP/OzL.Pro/ExCom/78/9/Corr.1;
2. To note the urgency of taking action to enable Article 5 countries to meet the HFC-23 reporting and control obligations by 1 January 2020;
3. To reiterate, through the World Bank, its request to the Government of China that it provide to the 79^th meeting reports on the status of the studies on “HFC-23 conversion/pyrolysis technologies” and on “investigation on reducing HFC-23 by-product ratio using best practices” that had been funded through the HCFC production phase-out management plan;
4. To invite all relevant HCFC-22 producing parties to provide to the Secretariat, on a voluntary basis, information on quantities of HFC-23 in facilities producing HCFC-22 as well as their experience in controlling and monitoring HFC-23 by-product emissions, including relevant policies and regulations and the related costs, no later than 15 May 2017;
5. To request the Secretariat to continue to explore whether there were HFC- or other HCFC‑producing facilities in any party that generated HFC-23 emissions and to report back to the Executive Committee by 31 May 2018;
6. To request the Secretariat to submit an updated document of key aspects related to HFC-23 by‑product control technologies to the 79^th meeting, including:
   1. Information relevant to the cost of closure of HCFC-22 production swing plants;
   2. A description of existing policies and regulations supporting the control and monitoring of HFC-23 emissions and requirements for sustaining those measures in Article 5 countries;
   3. Further analysis of methods to control HFC-23 emissions based on the additional information provided by Executive Committee members and any other available information to the Secretariat, including information from the Clean Development Mechanism;
   4. The current levels of HCFC-22 production and HFC-23 emissions, and information on management practices, per line, in each facility in Article 5 and non-Article 5 countries, including information on approved monitoring methodologies under the United Nations Framework Convention on Climate Change; and
   5. Exploration of possible options for monitoring HFC-23 emissions, such as those approved for continuous monitoring under the United Nations Framework Convention on Climate Change, including the associated costs; and
7. To consider the need for a desk and field study at the 79^th meeting.