Wirpo Katalogy

Page 4

47
Laser protection levels | Clothing and gloves:
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
Protective measures in accordance with the laser classes
EyeSkin
Laser class
1
Laser class
1M • 2M • 2 • 3A
Laser class
3R • 3B
Laser class
4
Safe for
eyes and skin,
provided
higher lasers
are not installed!
Dangerous to eyes!
Perm. max.
time for times
exceeded
<0,25 s
Fire, danger of
explosion and
danger to skin only
in upper power range
of Class 3B
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
Hazard corresponding to the laser classes
Dangerous to
eyes and skin!
Even diffuse
radiation can be
dangerous.
Fire, danger of
explosion !
Protection
level [P]
Radiation strength/
mean pulse power
[kW/m
2
]
Laser power [W] for
a laser spot size
of 1 cm
2
(diameter d
86%
)
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 deter-
mines the predictable maximum radiation (VBM val-
ue) for the laser system and the respective process and
species the required protection level of the laser PPE
based on this.
RISKS AND PROTECTIVE MEASURES:
Due to the eects of
intensive laser radiation on the
health of employees with regard
to the eyes and skin, the use of
personal protective equipment (PPE)
is required in the OstrV (Occupation-
al Safety Regulations on Articial
Optical Radiation) if protection
cannot be ensured with technical or
organizational measures alone.
8Protection levels:
8Fabric ML-1:
coated insert textile (JT450ML-1), 460 g/m
2
= P7
8Fabric ML-2:
black insert textile (JT260CBL), 300 g/m
2
= P5
8Fabric ML-7:
Combination
of coated insert textile (JT450ML-1), 460 g/m
2
and black insert textile (JT260CBL), 300 g/m
2
= P5
 8 Fabric ML-8:
coated insert textile (JT450ML-1), 590 g/m
2
and lining (JT125COB) = P8
Wirpo Katalogy