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After being adopted for use on the ISS, it had the NASA name '''SFOG''', but they also sometimes use the Russian acronym TGK.<ref name=ellis/>
===Vika on Mir===
On 23 February 1997, during the exchange of an air filter, a failed chemical oxygen generator spewed a torch-like jet of a molten metal and sparks across one of the [[Mir]] [[space station]] modules, burning for 14 minutes and blocking the escape route to one of the [[Soyuz spacecraft]]. The accident was caused by a leak of the lithium perchlorate from one of the canisters.{{citation needed|date=December 2010}}
===Vika on ISS===
A backup to the temperamental Elektron system used on both the ISS and ''Mir'' is the ''Vika'' solid-fuel oxygen generator (SFOG), which contains a replaceable cartridge, a thin walled steel tube with a three-part block of oxygen-releasing mixture based on [[lithium perchlorate]]. Two parts are tablets of the chemical mixture and the third one is the igniter tablet with a flash igniter. The igniter is struck by a firing pin when the device is activated. One cartridge releases {{convert|600|l|USgal}} of oxygen and burns for 5–20 minutes at {{convert|450|-|500|C|F}}<ref>[http://www.molecularproducts.com/products_detail.php?id=2 Oxygen Generators]</ref> The oxygen is cooled and filtered from dust and odours, and released into the space station atmosphere.{{citation needed|date=December 2010}}
{{see also|Chemical oxygen generator}}
==References==
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