Combining innovation and proven methods
Substitution of calcium-containing insulation and insulating systems
VitroSilK®PROTEKTO - Composite silk glass fiber/E-glass needle mat composite
heat resistant up to 750°C
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The world's first composite insulation mat with integrated calcium-free chromate blocker made from VitroSilK® fibers
"Combining innovation with proven methods" means needle-punching calcium-free and calcium-containing insulating materials in such a way that a calcium-free contact surface is created which can easily be mounted on chromium-containing hot parts without the formation of calcium chromate, the carcinogenic Cr6 compound , at higher temperatures (chromate blocker).
VitroSilK® PROTECTO
The innovation from Kavarmat® is called:
The composite mat consists of a first (contact-side) layer of calcium-free, silicate silk glass fibers ( VitroSilK® ) and a further layer consisting of an E-glass fiber needle mat .
Due to the calcium-free so-called "chromate blocker", VitroSilK® PROTEKTO fiber mats can be safely mounted on chromium-containing hot parts, such as stainless steel pipes, exhaust components or other engine and turbine parts, without the possibility of chromate formation (Cr-6+) , because the contact layer contains no alkali or alkaline earth metals (sodium, calcium, etc.) that could thermochemically react with the chromium compounds of the insulated parts.
VitroSilK® PROTECTO
Composite insulation mat with a calcium-free contact side made of VitroSilK®F fibers to prevent the formation of carcinogenic chromium (VI) compounds ; needled with a commercially available E-glass fiber needle mat.
Available in the following thicknesses
5/5 mm, total thickness 10 mm
5/10 mm, total thickness 15 mm
5/15 mm, total thickness 20 mm
5/25 mm, total thickness 30 mm
The first value indicates the thickness of the VitroSilK® contact layer (chromate blocker) , the second value represents the thickness of the E-glass fiber needle mat.
substitution
(lat.: substitutio – substitution)
In Germany, the handling of hazardous substances – including activities where hazardous substances may be created or released – is subject to the Hazardous Substances Ordinance (GefStoffV); you can download the current version here .
TRGS 561 (Technical Rules for Hazardous Substances; download here ) explicitly covers " thermally stressed chromium-alloyed industrial components " on which chromium(VI) compounds can form and be deposited in insulating materials or assembly pastes.
If contamination with Chromium(VI) is present or cannot be ruled out , the employer must carry out a risk assessment before commencing work, examine suitable substitution options and implement these as a priority .
In addition, the cross-industry protective measures and measures for dust prevention according to sections 4.1 and 4.2 as well as the special requirements of section 5.9.3 of TRGS 561 must be applied.