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Laser applications

Laser show

Are the lasers used in nightclubs and discos safe?

The NRPB, now the Radiation Protection Division of the Health Protection Agency, has undertaken considerable research into the use of lasers in the entertainment industry. Some situations have given cause for concern, mainly because the potential or actual exposure of people, including the audience, has not been properly assessed. The use of lasers may be covered by conditions on the premises under the Licensing Act, which is enforced by the local council (district, unitary or other authority). HPA advice to such councils is that a risk assessment should be carried out to demonstrate that people are not exposed to unacceptable risks. Assessment of laser display effects used for intentionally scanning the audience is time-consuming and complex. HPA experience is that such assessments are rarely satisfactorily undertaken and the practice should not routinely take place.

Are medical lasers safe?

Lasers are used for a wide range of surgical, treatment and diagnostic applications. The person clinically directing the procedure should be competent to do so. The support staff should also be adequately trained. The use of lasers in private medical practice and for aesthetic procedures is subject to the requirements of the Care Standards Act 2000 for England and Wales, and the Regulation of Care (Scotland) Act 2001.

A private clinic should be registered with the Healthcare Commission, at www.healthcarecommission.org.uk/homepage.cfm [outside link], (in England) or the Care and Social Services Inspectorate Wales, at www.csiw.wales.gov.uk/index.asp [outside link]. A Patients’ Guide should be available for inspection at the clinic.

In Scotland, private medical laser use is based around the rights of the patient and are described in national care standards for independent specialist clinics issued by the Scottish government, at www.scotland.gov.uk/Publications/2004/03/18981/33591 [outside link].

What are the manufacturer’s responsibilities when I buy a laser?

The manufacturer should ensure that the laser product at least meets the requirements of the current British Standard on laser safety, BS EN 60825-1:1994. This may be a legal requirement under some legislation, such as the Supply of Machinery (Safety) Regulations 1992 and the Electrical Equipment (Safety) Regulations 1994. It would also be reasonable to expect the manufacturer or supplier to give some guidance on the risks from the use of the laser, and other operations likely to be carried out, such as maintenance.

 

How can a laser product be a Class 1 and still cut material?

A Class 1 laser product may contain a Class 4 laser system, but be safe by engineering design. The control measures may include restricting access to the laser beam by enclosures and interlocked panels. In some applications, the beam may only present a risk of injury over small distances. It is sometimes necessary to restrict access to the area where the beam is cutting or welding material so as to avoid exposure to moving parts and material ejected from the work site.


Last reviewed: 4 September 2008