Manual for Refrigeration Servicing Technicians

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Manual for Refrigeration Servicing Technicians ( manual-refrigeration-servicing-technicians )

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1 The ozone layer and the Montreal Protocol UNEP has been concerned about the protection of the ozone layer since its inception in 1972. In March 1985, the Convention for the Protection of the Ozone Layer was signed in Vienna. The Convention provided for future protocols and specified procedures for amendment and dispute settlement. In September 1987, agreement was reached on specific measures to be taken and the Montreal Protocol on Substances that Deplete the Ozone Layer was signed. Under the Protocol, the first concrete step to protect the ozone layer was taken, a 50% reduction in the production and consumption of specified CFCs by the year 1999. 120 % 100 % 80 % 60 % 40 % 20 % CFC-NON-A5 CFC-A5 CFCs (ANNEX A/I) PRODUCTION/CONSUMPTION REDUCTION SCHEDULE NON - A5 BASELINE 1989 ARTICLE 5 BASELINE 95-97 Even as the nations adopted the Protocol in 1987, new scientific findings indicated that the Protocol’s control measures were inadequate to restore the ozone layer. In addition, developing countries expressed concern over the vague language both regarding technology transfer to developing countries and regarding financial assistance. As a result of the Second Meeting of the Parties in London (1990), the Montreal schedules were adjusted so that the five CFCs (R11, R12, R113, R114 and R115) and the three halons would be phased out by the year 2000. Methyl chloroform was to be controlled and to be phased out in 2005. Figure 1.3 shows the CFC phase-out schedules for Article 5 and Non-Article 5 countries. 0% DONE 21 JAN- JAN- JAN- JAN- JAN- JAN- JAN- JAN- JAN- JAN- JAN- JAN- JAN- JAN- JAN- 1986 1988 1990 1992 1994 1996 1998 2000 2002 2004 2006 2008 2010 2012 2014 MONTH/YEAR Figure 1.3 Article 5 and Non-Article 5 countries phase-out schedules of Annex A Group I CFCs The UNEP Assessment Panels did a substantial amount of work in 1991. These Panels consider the science, the effects and the technology that is in place to replace and phase out the controlled chemicals. Environmental Impact

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