LASER standards and guidance

Question 1

What are the key laser safety standards?

Answer 1

BS EN 60601-2-22
Medical laser reqs

BS EN 60825
Safety, classification and guards

Question 2

What is the main set of regs?

Answer 2

CAORW

Question 3

What is the relevant standard for goggles?

Answer 3

BS EN 207
Goggles

Question 4

What is the standard for testing of drapes?

Answer 4

BS EN 11810
Testing of drapes

Question 5

What are two key sources of guidance?

Answer 5

MHRA doc
HPA guidance on implementing CAORW

Question 6

Name the 8 classes of LASER

Answer 6

Class 1 - eye safe
Class 1M - hazardous under Mag
Class 1C - higher P, Contact, Eng controls

Class 2 - visible - do not stare into beam
Class 2M - hazardous under Mag

Class 3R - risk to eyes, Relaxed controls
Class 3B - Brief viewing risk

Class 4 - High risk to eyes, skin. Fire hazard.

Question 7

Example of Class 4 laser?

Answer 7

surgical laser

Question 8

Example of Class 3R laser?

Answer 8

alignment laser

Question 9

Requirements for class 3B and class 4 lasers?

Answer 9

Many requirements, including risk assessment and local rules?

Question 10

Which lasers must be labelled?

Answer 10

All except Class 1 - eye safe

Question 11

What does the following goggle code mean? 1064 D LB7 X S

Answer 11

1064 nm
D/I/R/M: output mode (CW, pulsed etc)
LB1-10: indicates optical density
X: manufacturer ID
S: mechanical strength

Question 12

What are the limiting apertures used to calculate irradiance limits for the naked eye and loupe magnifier respectively?

Answer 12

Loupe magnifier 14 mm
Naked eye 10 cm

Question 13

What are the characteristic time periods specified in IEC 60825?

Answer 13

Blink response 0.25 s
Aversion time 100 s
Working day 30,000 s