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Knights Glass meets its obligations under The
Management of Health & Safety at Work Regulations 1999. Risk
assessments are made to establish any hazards arising from our work and a
system of site specific
Method Statements backed by data sheets sets out safe methods of
working. A commitment to training, inspection and regular review ensures a
continuous focus on all aspects of safety.
COSHH assessment
(Control Of Substances Hazardous to Health)
There are no substances within the installed products which can be
regarded as hazardous. When maintaining the products, use of silicone &
silicone spray lubricants and glass cleaners in normal ventilated areas will
not pose a hazard provided manufacturers instructions are followed.
Risk assessments
In accordance with BS 6262, glass which extends below 800mm from finished
floor level must be specified as safety glass. Each pane will have a
permanent visible mark showing:
- the applicable British Standard BS 6206
- a material code. L for Laminate, T for Toughened, P for Plastic, W for
Wired and F for Safety Film Backed
- a classification relating to impact test behaviour- A, B or C ( A
being the highest)
- an identifiable name or mark showing the manufacturer or processor of
the material.
Raised access floors fitted at a later date will require the glass to be
re-assessed for possible replacement or application of safety film.
Window cleaners must make the same risk assessments when cleaning
windows. In particular, ensure that the outer window is firmly closed to
avoid accidental opening. Safety harnesses must be worn if there is a risk
of a fall.
When removing glazing panels for cleaning or maintenance, there
must be a full manual handling assessment, taking into account the weight,
size and shape of the panel and it's position relative to the floor level. A
panel will weigh approximately 12 Kg. per square metre when glazed in 4mm
float glass. This rises to 17Kg per square metre in 6mm float and 29Kg. per
square metre in 11.5mm laminate. A minimum of two people should be employed
when lifting wide or heavy panels or those at significant heights. The use
of appropriate non slip gloves is recommended.
Whenever glass edges become exposed, gloves must be worn and if a panel
has to be fully deglazed, wrist and foot protection must also be worn.
Practical issues affecting design include:
Glass safety
- Use heavier or toughened glass for larger panels over 1.8m2
- In accordance with BS 6262-4:2005 safety glass must be specified for:
- windows extending below 800mm from the existing or proposed Finished
Floor level (FFL)
- doors and adjacent windows within 300mm of doors to a height of 1500mm
above FFL
- Guarding
For new buildings and those undergoing major refurbishment, glazing to
upper floors which is below 800mm from FFL must be sufficiently strong to
contain a person’s fall. The applicable Building Regulation is Part K in
England and Wales, Part S in Scotland and Part H in Northern Ireland. In
some cases the glass in the secondary glazing must be specified to meet
the requirement.
Manual handling
- Manual handling guidelines allow a fit man to lift 25Kg. A two metre
square aluminium framed panel glazed in 4mm glass will weigh approximately
21kg , in 6mm 31kg and in 11.5mm laminate 55kg. Where panels have to be
removed for cleaning or access a full manual handling assessment must be
completed.
Access
- The window design should take into account access for the safe
handling of materials both at installation stage and during future
maintenance.
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