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What is Asbestos?
Asbestos is a naturally forming mineral,
which has been commercially mined for its useful properties, namely:
•
Resistance to chemicals and heat
• Low thermal conductivity
• Flexibility
• High tensile strength
Asbestos was seen as a miracle fibre
which could be bonded into various building materials and woven into
textiles. It still remains one of the most effective forms of fire
protection known to man and, in many cases, asbestos materials
remain in good condition for many decades.
It is estimated over five million tonnes
of asbestos was imported into the United Kingdom, mainly from Canada
or South Africa. The three types mainly used within the construction
and refurbishment of buildings are:

Chrysotile - White Commonly
known as ‘white’ asbestos, Chrysotile is a member of the
group of minerals known as serpentine. In its raw
natural state Chrysotile is cream, white or pale green
in appearance and its soft curly fibres when processed
make it ideal for spinning and weaving. Chrysotile
asbestos was the most commonly used form within the UK
used in asbestos cement products and other various
materials and papers.

Amosite - Brown
Referred
to as ‘brown’ asbestos, Amosite is the most common member of the
amphibole group and was commercially mined in South Africa. When
raw, the fibres are brown or black and when processed appear to be
grey or brown.
Typical applications for brown asbestos were pipe lagging or mixed
as Asbestos Insulation Board (AIB).

Crocidolite - Blue
Crocidolite
is another member of the amphibole group and commonly known as
‘blue’ asbestos. It was primarily mined in South Africa but was also
mined commercially in Australia. Commonly used as sprayed
insulation, Crocidolite is seen as one of the most deadly forms of
asbestos. In its raw state the fibres are very dark in appearance
and when processed appear a distinctive blue. One
important point to note is that although the forms of asbestos are
commonly referred to by colour, this does not prove an ideal way to
identify the material.
Types of Asbestos Product
1.Reinforced Composites
Reinforced
composites can be found as vinyl floor tiles, toilet cisterns,
window sills and worktops.
2.Well-bound Materials
Well
bound materials and adhesives can be found as roofing felt, adhesive
under floor tiles and bitumen pads to the underside of sinks.
3.Textured Coating
Textured
coatings can be present on ceiling or walls also more commonly known
as the brand name ‘Artex’.
4.Asbestos Cement Products (AC)
Asbestos
cement products can be found in the form of external corrugated rood
panels or wall panels, door lining panels, under tile edging panels,
soffit panels, panels above doors and fixed wall and ceiling panels.
5. Asbestos Textile / Rope / Paper
Some
uses of asbestos textile / paper are paper linings under man made
mineral fibre (MMMF) on pipe work, rope seals, compressed gaskets on
pipe work and fuse holders in electrical switchgear.
6.Asbestos Insulating Board (AIB)
Asbestos insulating board can be found in the form of wall panels,
door lining panels, panels above doors,ceiling panels etc.
7.Asbestos Insulation
Asbestos
insulation products can be used for pipe lagging, boiler lagging and
sprayed coatings on ceilings.
Asbestos - Question &
Answer
Why is asbestos dangerous?
Breathing in air containing asbestos fibres can lead to
asbestos-related diseases, mainly cancers of the lungs and chest
lining. Asbestos is only a risk to health if asbestos fibres are
released into the air and breathed in. Past exposure to asbestos
currently kills up to 4000 people a year in Great Britain. This
number is expected to go on rising for the next and the onset of
disease. This can vary from 15 to 60 years. Only by preventing or
minimising these exposures now will asbestos-related disease
eventually be wiped out.
There are three main types of asbestos still found in premises.
These are commonly called ‘blue asbestos’ (crocidolite), ‘brown
asbestos’ (amosite) and ‘white asbestos’ (chrysotile). All of them
are dangerous, but blue and brown asbestos are more hazardous than
white. You cannot identify them just by their colour. Although it is
now illegal to use asbestos in the construction or refurbishment of
any premises, many thousands of tonnes of it were used in the past
and much of it is still in place. As long as it is in good condition
and is not being or going to be disturbed or damaged there is no
risk. But if it is disturbed or damaged, it can become a danger to
health, because asbestos fibres are released into the air and people
can breathe them in.
Where is asbestos found in buildings?
Some Asbestos Containing Materials (ACMs) are more vulnerable to
damage and more likely to give off fibres than others. In general,
the materials which contain a high percentage of asbestos are more
easily damaged. The list below is roughly in order of ease of fibre
release (with the highest potential fibre release first). Sprayed
coatings, lagging and insulating board are more likely to contain
blue or brown asbestos. Asbestos insulation and lagging can contain
up to 85% asbestos and are most likely to give off fibres. Work with
asbestos insulating board can result in equally high fibre release
if power tools are used. On the other hand, asbestos cement contains
only 10%-15% asbestos. The asbestos is tightly bound into the cement
and the material will only give off fibres if it is badly damaged or
broken.
You are most likely to come across asbestos in these materials:
• sprayed asbestos and asbestos loose packing - generally used as
fire breaks in ceiling voids;
• moulded or preformed lagging - generally used in thermal
insulation of pipes and boilers;
• sprayed asbestos - generally used as fire protection in ducts,
firebreaks, panels, partitions, soffit boards, ceiling panels and
around structural steel work;
• insulating boards used for fire protection, thermal insulation,
partitioning and ducts;
• some ceiling tiles;
• millboard, paper and paper products used for insulation of
electrical equipment. Asbestos paper has also been used as a
fire-proof facing on wood fibreboard;
• asbestos cement products, which can be fully or semi-compressed
into flat or corrugated sheets. Corrugated sheets are largely used
as roofing and wall cladding. Other asbestos cement products include
gutters, rainwater pipes and water tanks;
• certain textured coatings;
• bitumen roofing material; and
• vinyl or thermoplastic floor tiles.
Why is the duty to manage asbestos
needed?
Much has been done to control the risk from asbestos. The use,
supply and importation of asbestos and asbestos products are
controlled by strict Regulations. The control of any work with, on
or around asbestos is well controlled, with many types of work
requiring a licence. There is no cure for asbestos-related diseases.
There is usually a long delay between first exposure to asbestos
workers from exposure to asbestos when the presence of asbestos is
known.
At least a quarter of those dying from asbestos-related diseases
have worked in the maintenance or building trades.
It is those people who may be unknowingly exposed to asbestos fibres
during their day to day work, those such as plumbers, electricians,
cable layers, gas fitters, painters and decorators, that the duty to
manage has been introduced to protect. The duty seeks to ensure that
asbestos in premises will be located, recorded and managed. Then
those who may disturb it are informed of its location so they can
take suitable precautions.
Who will be the dutyholder?
All those who have responsibility for the maintenance and/or repair
of non-domestic premises have duties under this regulation. The
extent of the legal duty is determined by the terms of the tenancy
agreement or contract that applies, and in the absence of any such
agreement, on the degree of control the party has over the premises.
The dutyholder may well be the landlord or tenant depending on the
circumstances of the case. In some cases responsibility could be
shared between two or more parties.
The regulation also includes a duty to cooperate, which applies
widely. This will, for example, require a landlord to pass
information on asbestos to a new tenant. Similarly a tenant must
co-operate by allowing a landlord to gain access to a building for
example, to carry out a survey. Also a building surveyor or
architect who had plans which show information on the whereabouts of
asbestos would be expected to make these available to the dutyholder
at a reasonable cost.
Do I have to remove all asbestos?
No, asbestos is only a risk to health when in a poor condition or it
is disturbed so that it releases fibres. Examples of poor condition
would be where asbestos lagging is hanging off pipe work or where
asbestos-insulating board is broken and debris is on the floor. Two
main ways disturbance could occur is through maintenance work or
workplace activities that repeatedly damage the material eg a
trolley or a forklift truck that scrapes against asbestos-insulating
board.
Where damage to the asbestos is minor eg a crack in the material, it
may be practical to repair or seal it and leave it in place if it is
not going to be disturbed.
Asbestos that is in a good condition and in a location where it will
not be disturbed should be left in place and correctly managed.
Anyone who would be likely to come into contact with the material
must be notified of its presence.
It should be remembered that removal of asbestos in good condition
that is not going to be disturbed would give rise to unnecessary
risk and expense.
Do I need to carry out a survey of all
premises covered by the regulation?
Not necessarily. The regulation requires you to take ‘reasonable
steps’ to find asbestos in your premises. There are different types
of inspection/survey that could be undertaken. The regulation calls
for a proportionate approach and will only require a substantial
survey where the risk warrants it. In many cases, for example a
small shop where there is very little maintenance work, a simple
walk through inspection will be suitable. Presuming any material,
unless it can be proved otherwise, contains asbestos, noting its
location and condition will be enough. If the situation changed and
work that would disturb the material needed to be carried out then
testing would need to be undertaken.
In other situations a full survey may be needed testing any suspect
materials and then managing the risk as required. For example in a
factory where forklifts etc bumping into walls means that certain
areas, if they where to contain asbestos, would release fibres
daily. A laboratory test to determine any asbestos material in that
area is likely to be required in such a case.
For most premises it will be a combination of these that will be
most suitable. A hospital for example has buildings with all sorts
of uses, a ward for example would need a thorough survey with
testing, whereas a store cupboard with limited access would only
need a walk through inspection.
The regulation is not a duty to survey. Any survey will only be a
step towards managing any asbestos, and a poor or inappropriate
survey could prove to be worse than no survey at all.
Who needs to know where asbestos is?
The duty requires that you make information on the location and
condition of the asbestos available to anyone liable to work on it
or disturb it. Any employees involved in building maintenance work
and any contractors working on the premises should know if the
building contains or may contain asbestos. They should also be told
where it is and that there are potential risks to their health if
they disturb it.
It may be necessary to inform anyone installing cables, computer
equipment, telephones etc as they could disturb asbestos during
their work. They should also be informed of the possibility of
coming across any hidden asbestos containing materials which might
not have been recorded.
Where do I get advice if I have to
remove asbestos?
If it is necessary to remove asbestos then for most work with
asbestos insulation, asbestos coating and asbestos insulating board
it will need to be carried out by an HSE licensed contractor.
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