UV questions

Question 1

What is the weighting function S(λ)?

Answer 1

EU directive weighting function to modify spectral irradiance to take into account the wavelength dependency of adverse health effects on the skin and eyes. After application, data is in terms of effective irradiance.

Question 2

What is the difference between SED and MED?

Answer 2

• Standard erythemal dose is a standard amount of erythemally weighted radiation 100 J/m^2. Several SED would typically be required to cause erythema.
• Minimal erythemal dose is the minimum dose require to show erythema in an individual.

Question 3

What is an example of the content of UV local rules?

Answer 3

• Name of RPS/RPA.
• Rooms and equipment.
• Extent of controlled areas.
• Access control.
• Pre-use checks.
• Procedures for staff.
• Use of PPE.
• Servicing arrangements.
• Contingencies.
• Incident reporting.
• Audit.
• Authorised users.
• Review date.