REGULATION.
815
8 Occupational Safety Regulations on Artificial Optical Radiation (OStrV)
"The employer must ensure during operation of Class 3R, 3B and 4 lasers according to Section 5 of the
German OstrV, that the hazard evaluations, the measurements and the calculations are only carried out by
expert laser protection representatives."
According to Sec. 7 Measures for avoiding and reducing the hazards to employees "by artificial
optical radiation, the employer must carry out the protective measures according to Section 3
Paragraph 1 Sentence 7 according to the latest technology in order to exclude hazards to the employees,
8 © BG ETEM
or to reduce them as far as possible. In particular, the measures include the selection and use of suitable
Personal Protection Equipment."
EFFECT OF LASER PPE (CLOTHING AND GLOVES).
The majority of the laser radiation which strikes the PPE is diffusely reflected by the outer layer. The energy of the absorbed
portion of radiation is expanded in the entire surface of the first inner layer, causing an increase in the protective effect of the
textile and reducing the probability of injury.
Requirements for the laser PPE for ensuring
Layers and their functions
with regard to protection
against laser radiation
the protective effect up to the specified
8 Defined heat transport to the skin,
in order to feed the energy input (reflex behavior)
Skin
All layers:
- Flame-retardant (self-extinguishing)
- Heat-resistant (for high temperatures)
8 Defined minimum service life of the textile until
2nd degree burns occur
2. Middle layer
Scattering of the laser radiation to
increase the absorption volume
3. Inner layer
Good insulating properties,
minimal heat transfer to skin
Result: Avoidance of burns and injuries
JT450ML-1 LASER PROTECTION FABRIC
Blended fabric, PU-coated on one side
Test
Test standard
Values
1. Weave
DIN 61 101 - 1
Twill
2. Width
DIN EN 1773
1,600 mm
•
Excellent flexibility for wearing comfort
•
Great dimensional stability
3. Thickness
DIN EN ISO 5084 | DIN EN ISO 2286 - 3
approx. 0.65 mm
•
High fabric strength
4. Weight
DIN EN ISO 12127
approx. 450 g/m2
•
Anti-static
5. Thread count
DIN EN 1049 - 2
•
Repellent against hydrocarbons
•
High reflection, satin gloss finish
•
Coating must be kept clean to
Warp
tex x 2
optimally fulfill its function
Weft
tex x 1
Warp
14 threads/cm
Weft
6. Yarn count
7. Maximum tensile strength
7.5 threads/cm
DIN EN ISO 2060
40/2 x 40/2 Nm
ISO 4606
Warp
approx. 110 daN
Weft
approx. 70 daN
8. Combustion behavior
DIN ISO 15025
< 2 sec.
9. Transmission
Laser standard
<8%
10. Reflection
Laser standard
< 90 %
8 © PROSYS®Laser
1. Outer layer
(Diffuse) scattered radiation emission,
low absorption, minimal/no
transmission
power density: