This standard specifies specific functional requirements and a product labelling system applicable to a range
of temporary and permanent passive guards (in the following called screens) for protection against laser
radiation. This standard includes test methods for testing functional performance and also the specification of
the user documentation to be supplied with the product. The screens are designed to protect the user from
uncontrolled emission of direct and/or diffuse radiation for a defined exposure to lasers, based on the
necessary functional requirements for any particular application being determined by risk assessment
principles.
This standard applies to supervised screens for installations in working places at which laser radiation up to a
maximum mean power of 100 W or single pulse energy of 30 J occurs within the spectral range between 180
nm (0,18 μm) and 106 nm (1000 μm).
This standard applies to the protection against laser radiation only. This standard does not apply to other
hazards including hazards from secondary radiation that can arise during, for example, material processing.
This standard gives guidance on how to select such screens.
The following are not considered to be within the scope of the standard:
? laser enclosures and housings that are supplied as part of the laser product or are supplied to be
fitted to a laser system to form a laser product (according to IEC 60 825-1:1998);
? any screen whose protective properties are limited to a restricted range of angles of incidence
(e.g. some interference filters)
BS EN 12254:1998+A2:2008 history
0000 BS EN 12254:2010(2013)
2010BS EN 12254:2010 Screens for laser working places - Safety requirements and testing