Light intensity plays important role for better work at work place. Light intensity levels effect on the systolic and diastolic blood pressure, blood oxygen saturation, heart pulse rate and tympanic temperature of the employees’ health.
Poor lighting can affect the health of the people working in pharmaceutical industry causing headache, eye strain and migraine.
CFR-211.44 gives only one guideline and states that “Adequate lighting shall be provided in all areas”.
Regulatory guideline do not make any comment on the intensity of light required in various operational areas. But there are certain industry norms for specific critical areas in the plant, they are as follows:
Visual inspection areas for ampoules/ Vials or similar sterile products 100 foot candles
Visual inspection areas for liquid oral bottles or similar non-sterile products 50-80 foot candles
Packing line in the packaging department 50 foot candle
Visual inspection of tablets capsules on automatic / semiautomatic inspection belts. 50-80 foot candles
Other Operational areas in the Plant. 50-80 foot candles
Light intensity should be checked at the operational height in the department.
Specification and records of light intensity at critical work areas as identified above.
UK Government had published a document on Lighting at work in 1987.
It is better to have sufficient light at work place. Standard unit of Light intensity is Lux. I lux is equal to the light intensity of the surface one meter away from a signal candle. Light intensity is measured by using an instrument called lux meter. Light intensity should be checked at the operational height in the department about one meter from ground. To determine final light intensity, record light intensity of minimum five location minimum and an average of all readings.