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06 October 2018

25.Ozone Depleting Substances(ODS)

October 06, 2018 Posted by AK No comments
Regulation 12 of Marpol annex 6 talks about ODS.

New installations which contain ozone-depleting substances shall be prohibited on all ships, except that new installations containing hydrochlorofluorocarbons (HCFCs) are permitted until 1 January 2020.

Ships which have rechargeable systems that contain ozone depleting substances must maintain an Ozone Depleting Substances Record Book under the revised MARPOL Annex VI, reg. 12. 6


  • Ozone Depletion Substances
– CFCs: These include Trichlorofluoromethane (CFC11), Dichlorodifluoromethane (CFC12) and Chloropentafluoroethane (CFC15)

 – Halon (Organic Compound): These include two sub-categories where the first category compounds have been banned from being used in ships with a construction date of 19th May 1995 and the second category compounds have been banned from being used in ships with a construction date of 1st January 2020

The first type compounds are R11 to R13, R111 to R115 and R211 to R217 while some of the second type compounds include R21, R22, R31 and R271.

–         Methyl Chloroform
–         Methyl Bromide
–         Bromochlorodifluoromethane
–         Bromotrifluoromethane


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