On these pages you will find some safety advice. Readers should note
that all fire situations are different, this means that it is difficult to give
fail-proof general advice. Readers should note that other or
additional safety measures may be required under particular circumstances.
However, the information contained on these pages may prove useful in some
situations. Please read the disclaimer at the bottom of the page.
A smoke hood is a device to assist people in escaping safely from within a
burning structure. It is worn over the head and if correctly donned, the
device protects the users’ heads from heat and thermal radiation, the eyes
from harmful irritant gases produced by fire (for example Hydrogen Chloride
(HCl) gas) and, through the use of a filtration system, can provide filtered
air relatively free of harmful narcotic (for example Carbon Monoxide (CO))
and irritant gases produced by fire. The filter will only provide protection
for a limited period, typically several minutes. Also, smoke hoods typically
are a ‘use once device’ - once packaging is opened, they cannot be resealed
for later use.
There are many types of smoke hood available, with varying operating
characteristics offering different levels of protection. The old adage,
‘buyer beware’ is appropriate when it comes to purchasing a smoke hood. It
is essential that you check that the smoke hood will actually filter out CO,
the main killer gas in fire smoke. Beware, as some safety devices currently
on the market that claim to be smoke hoods do not filter out CO.
Smoke hoods have application in a variety of different fire environments
ranging from high-rise office buildings to domestic dwellings. Because some
smoke hoods can easily be carried in briefcases or handbags, they can also
be used in hotel, public transport (overland rail and underground light
rail), passenger ship and aircraft fires.
My wife and I each have a smoke hood at home stored by our bedside. I also
prefer to carry a smoke hood when I fly and when I stay in hotels. However,
the general use of smoke hoods on aircraft by passengers is a controversial
and complex issue. I believe that my smoke hood could provide me with a few
minutes of extra protection from toxic and irritant fire products during an
evacuation. It would give me a vital few extra minutes to get out of a
burning aircraft or hotel. However, to offer that added protection, the
smoke hood has to be relatively easy to use. It is no good if the smoke hood
provides its user with a couple of minutes of extra protection, but then
delays their evacuation because it takes them five to 10 minutes to figure
out how to use it and another several minutes to put it on. This time would
be better spent getting out!
Unfortunately, a number of smoke hoods that are currently available, while
they may be effective in offering the level of protection required, are not
easy to put on correctly and so require the user to practice their use. This
makes many of the standard off-the-shelf smoke hoods impractical for use as
a general passenger safety device on-board aircraft.
Another potential problem with the general use of smoke hoods on board
aircraft is that as they cover the entire head of the user, it is difficult
to hear once you have put one on. So wearing a smoke hood might make it
difficult to hear safety instructions issued by aircraft crew. However,
proper use of the smoke hood would mean that you only put the smoke hood on
when it was actually needed i.e. when the smoke and heat levels were getting
severe, or when you were caught in an exit queue, not simply at the start of
an evacuation. For aircraft passengers, such as myself, who know how to use
off-the-shelf smoke hoods and who regularly practice donning the smoke hood,
I believe it is a good idea. Ideally, manufactures will eventually develop a
smoke hood that is easy to don, is small and light and can be used quickly
and easily by people without the need for regular practice.
As far as costs are concerned, you should be able to purchase a good quality
smoke hood for between £100 - £200 ($US150 - $US300). If you are considering
purchasing a smoke hood, here are several tips that may assist you in
selecting the right type of device:
The smoke hood should:
1) Offer protection from the main lethal fire gases, Carbon Monoxide,
Hydrogen Cyanide, Hydrogen Chloride, etc.
2) Offer at least 15 minutes of protection from high concentrations of these
lethal fire gases.
3) Be tested to an appropriate national standard such as the European
Standard EN 403.
4) Provide a good neck seal to keep out lethal gases and particulate matter.
5) Allow good visibility when donned as you will need to be able to see as
much as possible.
6) Be made of a heat resistant material to offer protection from elevated
temperature and completely cover the user’s head.
7) Be easy to put on and have clear instructions for proper use. Owners
should aim to be able to don the smoke hood correctly in around 10 seconds
(as measured from the time of opening packaging to putting it on correctly).
Avoid devices that need to be assembled, for example that require the user
to screw the filter into the mask.
8) Have a long shelf life - make sure that it is going to last for several
years if kept in its original packaging and stored correctly.
9) Be small and easy to carry when packed - if it is too large to carry you
will soon lose interest in carrying it with you when travelling.
10) Finally, make sure you purchase two devices so that you can practice
donning with one of them. Remember that once opened they will lose their
filtration abilities rapidly and so cannot be used at a later time.
You can find a host of different smoke hoods on the web, simply google
‘smoke hood’.
The chances of being involved in an aircraft accident are extremely
small and your chances of surviving a technically survivable accident
(an accident in which at least one person can survive) are high. Life
threatening accidents (including those in which no one survives) are
very rare, one such event occurring every 5.7 million departures. An
individual’s chances of surviving such an event are good, being almost
56%. If we exclude accidents in which everyone dies and consider only
the technically survivable incidents, then the average survival rate
goes up to 71.1%. For comparison purposes, over the period 1983-2000 in
the USA there were an average of 8,358,008 departures per year. You are
at greater risk from being involved in a fatal car accident on your way
to the airport than being in a fatal aircraft accident! So we should not
take a fatalistic view of aviation accidents.
If you are
involved in an aircraft accident it is essential that you evacuate as
quickly as possible. This is especially true in accidents involving fire
as every second counts.
Follow these simple safety tips to increase your chances of surviving a
plane crash:
BEFORE YOU BOARD:
AFTER YOU BOARD:
DURING AN EVACUATION:
Above all else PREPARE and be AWARE! PREPARE - plan how you would evacuate -
and be AWARE of your environment and your location relative to the exits at all
times. Remember that over 90% of aircraft accidents are survivable.
Major life threatening fires in hotels are rare. However, should you encounter one, your chances of survival will be improved if you apply these common sense guidelines.
BEFORE YOU TRAVEL:
- A powerful torch/flashlight: You may need to evacuate in the dark or through smoky conditions.
- Wide duct/masking tape: If smoke begins to enter your room attempt to seal the top, sides and bottom of the door with your tape. If you do not have tape, try putting wet towels around the door.
- A portable smoke detector: Some hotels you may be forced to stay in may not have smoke detectors installed.
- A personal smoke hood. Typically, these are filter based devices that are intended to provide fresh air and some protection to the head of the user from elevated heat and thermal radiation. Some models pack down to a size no bigger than a soft drink can. If you purchase such a device ensure that it is capable of filtering out carbon monoxide, and that it has undergone thorough testing by a reputable third party. Only use as instructed by the manufacturer.
AT THE HOTEL:
USEFUL INFORMATION:
The University of Greenwich makes no guarantee as to, and assumes no responsibility for, the correctness, sufficiency or completeness of such information or recommendations described on these pages. Other or additional safety measures may be required under particular circumstances.