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