LLoyd Smith, left, and Jason Podloski, right, died after an ammonia leak at the Fernie Memorial Arena on Oct. 17. Safety Authority, Technical Safety B.C. No national standardsThere's no national standard for how often ammonia refrigeration plants in ice rinks are inspected. The bodies of three people who died after a suspected ammonia leak were recovered later that night. inspector, said some municipalities have already moved to replace their ammonia refrigeration systems with what he considers to be safer alternatives, like freon or carbon dioxide.

Source: CBC News March 18, 2018 15:00 UTC