please is there any sealant material to be used to seal fire wall opening (40cmx30cmx25cm) located between hazardous area class 1 div1 ans non hazard area
There are products such as Hilti's Firestop System. 3M also manufactures sealants under the Fire Barrier and Firestop product names.
Good question. This is an area that most electrical contractors have very little knowledge of. It is actually a building code question.
You describe an opening in a firewall. Emmanual is correct in that one must use an approved "firestop system." The hole would be what we call a "through-penetration."
The sealant to be used is the one that is described in whatever firestop system is being used. There are many that could apply, so there is no right answer. The designer of record would choose the system to be used.
You can go to productspec *dot* UL *dot* com and choose where it says, "products, systems, or assemblies." From there select, "building or fire systems." From there, select "firestop systems" and then "search with specific parameters."
Hope this helps.
I've used a product from RectorSeal Firestopping Products. It's a very soft, pliable, fiberglass bag with various materials in it that can conform to just about any size and shape opening. It's called FlameSafe® Bags. They also make putty and caulks that work very well. My application was to seal off cable tray penetrations through fire walls and the bags worked great. They can be removed and replaced very easily as required. As Emmanuel and Nick said, there are many options out there. Just make sure that whatever you use is UL listed for the application.
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