The Health & Safety Executive definition is "DSE are devices or equipment that have an alphanumeric or graphic display screen and includes display screens, laptops, touch screens and other similar devices."
The full definition taken from the HSE publication, Work with display screen equipment, is:
The definition of DSE at regulation 1(2)(a) covers both conventional (cathode-ray tube) display screens and other types such as liquid crystal or plasma displays used in flat-panel screens, touchscreens and other emerging technologies. Display screens mainly used to display line drawings, graphs, charts or computer-generated graphics are included, as are screens used in work with television or film pictures. The definition is not limited to typical office situations or computer screens but also covers, for example, non-electronic display systems such as microfiche. DSE used in factories and other non-office workplaces is included, although in some situations such as screens used for process control or closed-circuit television (CCTV), certain requirements may not apply.
Yes, a VDU is another form of display screen equipment if the operator enters or reads information from it.
DSE or display screen regs are; The health and safety (display screen equipment) regulations 1992, as amended by the health and safety (miscellaneous amendments) regulations 2002.
They apply to anybody who uses DSE or display screen equipment for continuous or near-continuous spells of an hour or more at a time. Use DSE in this way more or less daily, and have to transfer information quickly to or from the DSE.
The Regulations were introduced because DSE has become one of the most common kinds of work equipment and the aim is to protect the health of people who work with DSE. The basic requirements of the Regulations are to ensure employers provide:
A suitable and sufficient risk assessment of the workstation, including the software in use, trip and electrical hazards from trailing cables and the surrounding environment;
Workstation compliance with the specifications detailed in the Regulations;
A plan of the work programme to ensure that there are adequate breaks in the work pattern of workers;
The provision of free eye sight tests and, if required, spectacles to users of DSE;
A suitable programme of training and sufficient information given to all users.
Display screen equipment training is mandatory under regulation 6 of the DSE regulations 1992. Here is what it says:
Regulation 6, Provision of training
(1) Where a person –
(a) is a user in the undertaking in which he is employed; or
(b) is to become a user in the undertaking in which he is, or is to become, employed,
the employer who carries on the undertaking shall ensure that he is provided with adequate health and safety training in the use of any workstation upon which he may be required to work.
Other regulations you may be interested in: