Widebody Transport
Physiological - Other; Training / Qualification; Situational Awareness
Deviation / Discrepancy - Procedural Published Material / Policy; Flight Deck / Cabin / Aircraft Event Other / Unknown; Ground Event / Encounter Other / Unknown
Flight Crew FLC complied w / Automation / Advisory; Flight Crew Took Evasive Action; General Physical Injury / Incapacitation
Company Policy; Environment - Non Weather Related; Human Factors; Procedure; Weather
[We were] required to wear C02 monitor due to dry ice waiver. During de-icing operations with packs off; the monitor alarm began to chirp. I donned the O2 mask and noticed the level on the monitor as 0.5 and climbing to 0.7. Both the Captain and I stayed on O2 for approximately 20 minutes during the duration of de-icing. After confirmation from ground support that the deicing procedure was complete; I turned the packs on per the QRH and the CO2 alarm subsided approximately 1 minute later. The Captain called the Duty Officer for protocol guidance regarding the event and we were advised that we were 'probably OK' to continue. We resumed the flight. Unfortunately; we have no idea to determine the levels of CO2 in the cockpit and our exposure levels. We followed the published bulletin relating to the CO2. Better guidance and knowledge from flight safety regarding our susceptibility of the types of exposure risks pertaining to hazardous materials.
The First Officer of a cargo flight noticed his carbon monoxide monitor alerting at a 0.5 to 0.7 level during de-ice operations with the Packs OFF and dry ice onboard. The crew used oxygen for about 20 minutes until the Packs were ON again.