This FAQ has been kindly compiled directly from questions posed on the Rebreatherworld web forum and Nobubblediving.com forum , PMs and emails, by an independent member of the RBW forum. Style etc, is generally of that forum.
FMECA Volume 5: Software and Firmware (966KB). Released 12th Aug 2008
FMECA covering firmware and software in the Open Revolution rebreathers and rebreather monitors.
This covers both primary FMECA and also correct by construction features to avoid failures from design or programming errors.