| Flexible fire resistant pillows for either temporary or permanent
fire stopping of service penetrations for fire resistance of up
to 4 hours.
General
Firebags consist of dust free coated glass fibre bags filled with
inorganic fillers, expansion agents and special fire retardant additives.
Placed in service penetrations through fire rated walls and just
as easily removed, to provide temporary or permanent fire stops.
They are especially suitable where frequent cable changes are expected,
for example, in computer and communications installations. Fire
protection during construction work can be as important as even
openings partially filled with Firebags will have a significant
baffle effect in the prevention of relatively minor outbreaks of
fire spreading throughout the building.
Description
Firebags are available in 3 configurations. Each bag is about 350mm
long and varies in width from a maximum of l00 mm.
| Firebag 720 |
The standard size, 720g in weight. |
| Firebag 250 |
Lower density, 250g in weight, to allow for folding
the bag to seal smaller openings or between cables. |
| Firebag 60 |
A narrow'sausage'shaped bag for use inside trunking
and around fibre optic cables. |
|
Applications
The versatility of the Firebag system allows it to be used in a
wide variety of applications in both new build and refurbishment.
- Inside trunking
- Fire seal to wall cavities
- Temporary sealing of service penetrations during construction
work
- In combination with permanent seals to form removable accesses.
- Underfloor compartmentation.
- Around fibre optic cables.
Performance
Firebags function by expanding under heat exposure. This expansion
will close even the most minute crevices between bags, structure
and penetrating services and will create an integrated density of
seal as it hardens into a solid, homogeneous smoke tight mass thus
preventing the filling material from running out even after the
glass fibre textile outer cover has been damaged or has melted.
Method of action
(i) at approximately 130 degrees C the various components of the
bags start to glue up and stick together so that their contents
cannot run even if the bags are damaged.
(ii) at approximately 280 degrees C the contents of the bags begin
to expand (720 bags by 15%, 250 bags by 40%) so that even the smallest
remaining spaces are closed tight.
(iii) at approximately 700 degrees C a 'ceramic reaction' causes
the contents to harden into a solid block mechanically so strong
that it will withstand damage caused by failing debris or the high
pressure stream from a firehose.
Sitework
Wall penetrations:
A single width of Firebags laid with lapped joints will achieve
a 4 hour rating.
Floor penetrations:
Where services penetrate a floor slab the fire rating of the seal
will depend on the total depth of Firebags used.
1 and 2 hour:
Two layers of Firebags laid flat with lapped joints on a 12 gauge
50mm square wire mesh screen. Additional bags should be placed around
services.
4 hour:
Four layers of Firebags laid flat with lapped joints on a 12gauge
50mm square wire mesh screen. Additional bags should be placed around
services.
Large openings can be reduced using Firegrout mortar or Firewall
panels.
Security:
For added security and to prevent Firebags being removed and not
replaced they can be ordered with eyelets which are then wired together
with stainless steel wire.
Supply
Firebags can be supplied direct to contractors who will install
in accordance with Tayfire (International) Ltd. guidelines, or may
be installed as part of a supply and install service arranged by
Tayfire (International) Ltd.
Authority
Firebags manufactured under ISO 9001 "Quality Systems"
Fire integrity for up to 4 hours has been fully tested to BS 476:
parts 20 and 22: 1987 "Methods of determination of the fire
resistance of non loadbearing elements of construction".
Services
Tayfire (International) Ltd. offer a full technical advisory and
fire stopping design service.
References
Further information on a wide range of otherfire protection products
is available from the company. These include intumescent coating
systems, fire sealants and fire barriers.
Back to Top
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Fig 1: Firebags installed on a wire mesh system which allows a
section of a larger seal to be opened easily for the inclusion of
future planned services while maintaining a secure temporary seal.
Fig 2: Method of installation of a 1 hour firebag seal with Firebags
laid flat in overlapping fashion
Fig 3: A section of a seal, partially filled with firebags will
still have a significant baffle effect in the event of fire
Fig 4: Firebags installed around telecommunication fibre optic
cable in ducting
TayFire (International) Ltd
SUNRISE
STATION ROAD
PERTHSHIRE
PH2 7SL
Tel: +44
(0)1821 641 007
Fax: +44 (0)1821
641 008
E-mail: enquires@tayfire.co.uk
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