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5.2.1 whilst daylight is generally thought to provide the best colour rendering, a significant proportion of practice work is carried out under artificial light due both to the design of the rooms and the availability of daylight. Artificial lighting must therefore ensure good colour rendering by using for example intermediate or warm florescent lights.
5.2.2 Glare must be minimised for the comfort of patients and particularly for computer users. Special diffusers (category 2) are available.
5.2.3 Low energy fittings should where ever possible be used, eg. Compact fluorescent lamps.
5.2.4 In examination and minor operation areas special low voltage enclosed lamps should be used either with purpose designed suspension units or mobile supports to allow shadow free illumination and negligible heat output.
5.2.5 Illumination should be generally to the following standard.
+ General circulation 200 lux at floor level.
+ Administration and paper work areas 400/500 lux at desk level
+ Waiting areas 300 lux at desk level
+ General clinical areas 400 to 500 lux at desk level
+ Examination areas, treatment rooms 1000 lux at couch level.
5.2.6 Emergency lighting should be provided to B.S Code of practice 5266 Part 1 category L3. whilst a central unit may be used in most installations self contained units will be appropriate.
5.2.7 Exterior lighting should be provided to the building to allow entry and exit withpassive infra red detectors to illuminate the path of those entering or leaving the building.
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| Book Title: NHS Circulars | ||