Wirpo Katalogy

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,

or to reduce them as far as possible. In particular, the measures include the selection and use of suitable

Personal Protection Equipment."

8 © BG ETEM

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

Test

Test standard

Values

1. Weave

DIN 61 101 - 1

Twill

2. Width

DIN EN 1773

1,600 mm

• 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

Blended fabric, PU-coated on one side

• Excellent flexibility for wearing comfort

• Repellent against hydrocarbons

• High reflection, satin gloss finish

Warp

14 threads/cm

Weft

6. Yarn count

7.5 threads/cm

DIN EN ISO 2060

40/2 x 40/2 Nm

• Coating must be kept clean to

Warp

tex x 2

Weft

tex x 1

optimally fulfill its function

7. Maximum tensile strength

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 %

1. Outer layer

(Diffuse) scattered radiation emission,

low absorption, minimal/no

transmission

power density: