Here is the relevant section from the Regulations for the Prevention of Pollution from Ships:http://laws.justice.gc.ca/eng/SOR-2007- ... l_2-gb:l_2
153. (1) For the purposes of this section, “new installation” means the installation of systems, equipment, including new portable fire-extinguishing units, insulation, or other material on a ship after May 17, 2005. This definition does not include the repair or recharge of systems, equipment, insulation or other material installed before that date or the recharge of portable fire-extinguishing units.
(2) Subject to subsection (3) and section 8, no ship shall emit and no person shall permit the emission from a ship of an ozone-depleting substance from an installation on a ship.
(3) For the purposes of this section, an emission of an ozone-depleting substance does not include a minimal release associated with the recapture or recycling of an ozone-depleting substance.
(4) A new installation that contains an ozone-depleting substance is prohibited on all ships, but a new installation that contains an ozone-depleting substance that is a hydrochlorofluorocarbon is authorized until January 1, 2020.
(section 8 covers emergencies, breakdowns etc)
It may appear that it's OK to work on a freon system, but remember that this is only one set of Regulations and it's Federal, associated with the Canada Shipping Act 2001. Provincial pollution acts and environmental protection acts apply too. I know that in Nova Scotia, only Provincially certificated technicians are permitted to work on Freon systems. Better play safe and spend money on Techs, don't risk jail time and a huge fine. (Penalties for contravening Regulations under the CSA 2001, for example, run to $1 million fine AND 2 years jail time.)
I may add that the employer gets charged too, and the employer is the person who directs the work, not necessarily who pays the pay cheque.
Discourage incest, ban country "music".