Geekzone: technology news, blogs, forums
Guest
Welcome Guest.
You haven't logged in yet. If you don't have an account you can register now.




3376 posts

Uber Geek


# 220212 31-Jul-2017 19:37
Send private message

I heard that Sydney terrorist were contemplating or building a device with poisonous gas for use on a plane.

While this may kill all the passengers (including the terrorist), it would be ineffective on the crew, right?

http://www.dailymail.co.uk/news/article-3910048/Toxic-cabin-fumes-POISON-plane-passengers-oxygen-masks-no-protection-warns-BA-s-flight-safety-chief.html

"The head of in-flight safety for British Airways has admitted that passengers can be 'incapacitated' by toxic fumes on planes.

Mark Mannering-Smith reportedly wrote on an internal online forum that cabin fumes can be toxic and therefore hurt crew and travellers.

His comments which were posted on the internet have since been deleted, but were saved by BA staff, reports The Sun on Sunday.

Mr Mannering-Smith wrote staff members can wear protective gear called smoke hoods, which are similar to gas masks, 'regardless of customer perception'.

Customers on board the flight will not have the same protection by using the oxygen masks which drop down during an emergency, according to the paper.

A senior BA source told the newspaper's Stephen Moyes: 'Oxygen comes from tanks in the hold.

'But the masks they use are designed to allow cabin air in so they do not provide protection from fumes.'"


View this topic in a long page with up to 500 replies per page Create new topic

This is a filtered page: currently showing replies marked as answers. Click here to see full discussion.

1107 posts

Uber Geek


  # 1834799 1-Aug-2017 11:01
3 people support this post
Send private message

 

kingdragonfly: I heard that Sydney terrorist were contemplating or building a device with poisonous gas for use on a plane.

While this may kill all the passengers (including the terrorist), it would be ineffective on the crew, right?

http://www.dailymail.co.uk/news/article-3910048/Toxic-cabin-fumes-POISON-plane-passengers-oxygen-masks-no-protection-warns-BA-s-flight-safety-chief.html

"The head of in-flight safety for British Airways has admitted that passengers can be 'incapacitated' by toxic fumes on planes.

Mark Mannering-Smith reportedly wrote on an internal online forum that cabin fumes can be toxic and therefore hurt crew and travellers.

His comments which were posted on the internet have since been deleted, but were saved by BA staff, reports The Sun on Sunday.

Mr Mannering-Smith wrote staff members can wear protective gear called smoke hoods, which are similar to gas masks, 'regardless of customer perception'.

Customers on board the flight will not have the same protection by using the oxygen masks which drop down during an emergency, according to the paper.

A senior BA source told the newspaper's Stephen Moyes: 'Oxygen comes from tanks in the hold.

'But the masks they use are designed to allow cabin air in so they do not provide protection from fumes.'"

 

The Pilots have oxygen systems that enable them to breath 100% bottle oxygen with hours of oxygen supply, which enables them to function at a high level in a depressurised/fume/smoke filled cabin and could theoretically survive a gas attack if they were to don the masks before the gas gets to them. But think about when you accidentally catch a wiff of oven cleaner and multiply it by 1,000. One breath could be all it takes.

 

The cabin crew have oxygen masks similar to passengers which supplement cabin air with addition oxygen. Cabin crew do have smoke hoods which are designed to proved a few minutes of smoke and fume protection but most designs do not exclude 100% of cabin air.

 

Passenger masks provide 7 minutes supplementary oxygen -  they mix with cabin air are designed to provide sufficient oxygen in a high altitude depressurisation to keep passengers alive & free from brain damage  while the aircraft descends to an altitude at which humans can breath properly. Oxygen n flows through that little hose not much faster than fish tank bubbler and the flow is barely perceptible - it certainly doesn't rush out. They are not designed to enable passengers to breath in a smoke/fume/gas filled environment. The masks are deployed automatically if the cabin altitude rises beyond 14,000 feet (normal cabin altitude is around 7-8,000 feet depending on model of aircraft), or if the pilot manually deploys them.

 

The cabin air is completely replaced every 3 to 4 minutes so such a gas would quickly be purged from the aircraft. The problem is that if the crew have not been trained for a gas attack they may fail to identity the problem and don their emergency gear in time. If the flight crew were do correctly diagnose a gas attack they could take corrective action to help speed up purging of the gas out of the aircraft such as manually depressurising the aircraft to near instantly dump 1/2 the cabin air (and gas) overboard, or select full hot cabin temperature which increases the volume of air flowing into the cabin on bleed air feed air-con systems. I won't speculate on how a terrorist could optimise such an attack.

 

 


View this topic in a long page with up to 500 replies per page Create new topic



Twitter and LinkedIn »



Follow us to receive Twitter updates when new discussions are posted in our forums:



Follow us to receive Twitter updates when news items and blogs are posted in our frontpage:



Follow us to receive Twitter updates when tech item prices are listed in our price comparison site:





News »

Intel introduces cryogenic control chip to enable quantum computers
Posted 10-Dec-2019 21:32


Vodafone 5G service live in four cities
Posted 10-Dec-2019 08:30


Samsung Galaxy Fold now available in New Zealand
Posted 6-Dec-2019 00:01


NZ company oDocs awarded US$ 100,000 Dubai World Expo grant
Posted 5-Dec-2019 16:00


New Zealand Rugby Selects AWS-Powered Analytics for Deeper Game Insights
Posted 5-Dec-2019 11:33


IMAGR and Farro bring checkout-less supermarket shopping to New Zealand
Posted 5-Dec-2019 09:07


Wellington Airport becomes first 5G connected airport in the country
Posted 3-Dec-2019 08:42


MetService secures Al Jazeera as a new weather client
Posted 28-Nov-2019 09:40


NZ a top 10 connected nation with stage one of ultra-fast broadband roll-out completed
Posted 24-Nov-2019 14:15


Microsoft Translator understands te reo Māori
Posted 22-Nov-2019 08:46


Chorus to launch Hyperfibre service
Posted 18-Nov-2019 15:00


Microsoft launches first Experience Center worldwide for Asia Pacific in Singapore
Posted 13-Nov-2019 13:08


Disney+ comes to LG Smart TVs
Posted 13-Nov-2019 12:55


Spark launches new wireless broadband "Unplan Metro"
Posted 11-Nov-2019 08:19


Malwarebytes overhauls flagship product with new UI, faster engine and lighter footprint
Posted 6-Nov-2019 11:48



Geekzone Live »

Try automatic live updates from Geekzone directly in your browser, without refreshing the page, with Geekzone Live now.


Support Geekzone »

Our community of supporters help make Geekzone possible. Click the button below to join them.

Support Geezone on PressPatron



Are you subscribed to our RSS feed? You can download the latest headlines and summaries from our stories directly to your computer or smartphone by using a feed reader.

Alternatively, you can receive a daily email with Geekzone updates.