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Noting with appreciation the 2018 and 2019 progress reports of the Technology and Economic Assessment Panel, especially insofar as they pertain to process agents,
Recalling that tables A and B of decision X/14 on process agents have been updated through decisions XV/6, XVII/7, XIX/15, XXI/3, XXII/8, XXIII/7 and XXIX/7,11Only table A was updated in decisions XV/6, XVII/7, XIX/15 and XXIX/7.
Noting with appreciation that most parties reported significantly lower make-up or consumption and emissions than those listed in table B of decision XXIII/7,
Recalling that decision IV/12 urged parties to take steps to minimize emissions of ozone‑depleting substances used as process agents, including such steps as avoidance of the creation of such emissions and reduction of emissions using practicable control technologies, process changes, containment or destruction,
Noting the importance of reporting as requested in decision X/14, and noting the importance of the information that was provided by parties in response to decision XXIX/7,
Noting also that, in its 2018 progress report, the Technology and Economic Assessment Panel recommended two modifications to table A of decision X/14, as updated through decision XXIX/7, to take into account information provided by parties in accordance with decision XXI/3, as well as the updating of table B of decision XXIII/7, and that no further recommendations were made in its 2019 progress report,
1.To update tables A and B of decision X/14, as set out in the annex to the present decision;
2.To remind parties of the importance of reporting as requested in decision X/14;
3.To request the Technology and Economic Assessment Panel to report in its quadrennial reports on any progress made by parties in reducing their use and emissions of controlled substances as process agents and on any new alternatives to such uses, including new production processes and emissions-reduction techniques, on the understanding that should new compelling information become available, that information should be reported in its annual progress report.
Annex to decision XXXI/6
Table A - List of uses of controlled substances as process agents
No.Process agent applicationSubstancePermitted parties
1Elimination of NCl3 in chlor-alkali productionCTCEuropean Union, Israel, United States of America
2Recovery of chlorine by tail gas absorption from chlor-alkali productionCTCUnited States of America
3Production of chlorinated rubberCTCEuropean Union
4Production of chlorosulfonated polyolefin (CSM)CTCChina
5Production of aramid polymer (PPTA)CTCEuropean Union
6Production of synthetic fibre sheetCFC‑11United States of America
7Photochemical synthesis of perfluoropolyetherpolyperoxide precursors of Z‑perfluoropolyethers and difunctional derivativesCFC-12European Union
8Production of cyclodimeCTCEuropean Union
9Bromination of a styrenic polymerBCMUnited States of America
10Production of high modulus polyethylene fibreCFC‑113United States of America
Abbreviations: BCM – bromochloromethane; CFC – chlorofluorocarbon; CTC – carbon tetrachloride.
Table B - Limits for process agent uses(all figures are in metric tons per year)
PartyMake-up or consumptionMaximum emissions
China1 103.0313
European Union921.015
Israel3.50
United States of America2 300.0181
Total 4 327.5509