RISKS AND PROTECTIVE MEASURES:

Due to the effects of

Hazard corresponding to the laser classes

Laser class

1M • 2M • 2 • 3A

Laser class

3R • 3B

Laser class

4

intensive laser radiation on the

Safer for eyes if beam

is not looked into for

longer time (over 0.25 s)

or optical instruments

like magnifying glasses

or telescopes are used

Dangerous to eyes!

Dangerous to

eyes and skin!

to the eyes and skin, the use of

Laser class

1

Eye

Safe for

eyes and skin,

provided

higher lasers

are not installed!

Perm. max.

time for times

<0,25 s

exceeded

Even diffuse

radiation can be

dangerous.

Fire, danger of

explosion and

danger to skin only

in upper power range

of Class 3B

Skin

47

health of employees with regard

personal protective equipment (PPE)

is required in the OstrV (Occupational Safety Regulations on Artificial

Optical Radiation) if protection

cannot be ensured with technical or

Fire, danger of

explosion !

organizational measures alone.

Protective measures in accordance with the laser classes

 Laser class 1:

Not mandatory

 Laser class 2:

Not mandatory

Safe at random, unintentional

radiotherapy

With Laser Pointer:

Maximum Performance: 1 mW

 Laser class 1M | 2M | 3A:

As laser classes 1 and 2,

but optical instruments for viewing

the beam may not be used

 Laser class 3R:

Only trained persons may use laser devices

Avoid beam guidance in the eye area

 Laser class 3B:

Technical measures

(eg. Housing and curtains)

Use PPE and laser safety goggles

 Laser class 4:

Technical, organizational and personal

protective measures are necessary

(eg. Housing and curtains) Use PPE

and laser safety goggles

Laser protection levels | Clothing and gloves:

Protection

level [P]

Radiation strength/

mean pulse power

[kW/m2]

Laser power [W] for

a laser spot size

of 1 cm2 (diameter d86%)

P1

50

4.5

P2

100

9.1

P3

150

13.6

P4

200

18.2

P5

300

27.2

P6

400

36.3

P7

600

54.5

P8

800

72.7

P9

1,000

90.8

P10

1,500

136.2

(11 + n)

1,500 + (11 + 1) * 500

136.2 + (n + 1) * 45.4

8 © STFI - Proposal for DIN-SPEC. Subject to change!

The laser protection representative individually determines the predictable maximum radiation (VBM value) for the laser system and the respective process and

specifies the required protection level of the laser PPE

based on this.

8 Protection levels:

8 Fabric ML-1:

coated insert textile (JT450ML-1), 460 g/m2 = P7

8 Fabric ML-2:

black insert textile (JT260CBL), 300 g/m2 = P5

8 Fabric ML-7:

Combination

of coated insert textile (JT450ML-1), 460 g/m2

and black insert textile (JT260CBL), 300 g/m2 = P5

8 Fabric ML-8:

coated insert textile (JT450ML-1), 590 g/m2

and lining (JT125COB) = P8