Does calcium silicate insulation contain asbestos?
When first developed, calcium silicate insulation was typically reinforced with asbestos fibers. By the end of 1972, all North American manufacturers had switched the reinforcing fibers to glass fiber, plant fibers, cotton linters, or rayon. Today, all North-American-manufactured calcium silicate is asbestos-free.
Is calcium silicate non asbestos?
At first, calcium silicate insulation was typically reinforced with asbestos fibers. By the end of 1972, most North American manufacturers had switched to glass fiber, plant fibers, cotton linters, or rayon. Now North American–manufactured calcium silicate contains no asbestos.
Is calcium silicate a non asbestos thermal insulation material?
A tough and durable calcium silicate insulation, offering exceptional thermal efficiency on hot process applications. Non combustible, it is an inert material, containing no asbestos.
When would you use calcium silicate insulation?
Calcium silicate insulation is typically applied on high-temperature (greater than 250°F) pipe and equipment in industrial facilities, such as chemical plants, refineries, and steam electric power plants.
Is calcium silicate a carcinogen?
In the available data on subacute toxicity, genotoxicity and developmental toxicity studies, no adverse effects were reported for silicates and talc. From the only chronic toxicity study (with calcium silicate) available, there was no indication for carcinogenicity.
Is calcium silicate harmful?
Calcium silicate causes physical irritation when in contact with the eyes, skin, or upper respiratory tract of exposed workers.
Is calcium silicate hazardous?
What is the common name for calcium silicate?
Calcium silicate is the chemical compound Ca2SiO4, also known as calcium orthosilicate and is sometimes formulated as 2CaO·SiO2. It is also referred to by the shortened trade name Cal-Sil or Calsil. It occurs naturally as the mineral larnite.
How is calcium silicate insulation made?
Calcium silicate insulation is manufactured from amorphous silica, lime, reinforcing fibers and other additives that are mixed with water in a batch mixing tank to form a slurry. This slurry is pumped to a pre-heater where it is heated to boiling and quickly poured into molds.
Is there asbestos in calcium silicate insulation?
History. At first, calcium silicate insulation was typically reinforced with asbestos fibers. By the end of 1972, most North American manufacturers had switched to glass fiber, plant fibers, cotton linters, or rayon. Now North American–manufactured calcium silicate contains no asbestos.
How do you insulate calcium silicate insulation?
Calcium silicate insulation is typically covered with a protective jacketing: conventional aluminum sheet, stainless steel sheet, polyvinyl chloride (PVC) sheet, glass cloth with weather barrier mastic, or a multi-ply laminate. To prevent water intrusion, a bead of sealant should be used on sheet metal jacketing overlaps.
Is calcium silicate noncombustible?
This material is also classified as noncombustible per ASTM E136. Calcium silicate insulation is typically covered with a protective jacketing: conventional aluminum sheet, stainless steel sheet, polyvinyl chloride (PVC) sheet, glass cloth with weather barrier mastic, or a multi-ply laminate.
What is calcium silicate used for in steam pipe insulation?
Calcium silicate products have been used to add insulation to steam pipes, preventing the build-up of heat, and to join other components of the steam system. Asbestos was known as a “wonder fiber” until the mid-1970s. It was known for a variety of uses throughout construction and manufacturing companies.