Sprayed asbestos

Sprayed asbestos

Spraying steel structural members with a fire-resistant coating of asbestos fibers mixed with cement and water. Used on structures prior to 1986, then banned and removed from any structure where it presented a health risk, or when renovating a structure containing the material.

sprayed asbestos

Asbestos fibers intermixed with bonding and adhesive ingredients; applied to surfaces such as structural beams with a spray gun; serves primarily as fire protection. The use of this material is no longer permitted in the United States because of its carcinogenic effects.
References in periodicals archive ?
These vary from corrugated asbestos cement roof sheets to sprayed asbestos fibres used as thermal insulation.
The sprayed asbestos was first disturbed on the ceiling beams on June 9, 2008, but the 45 workers were not asked to leave until June 20 when a contractor contacted the Health and Safety Executive (HSE) to say the contamination had spread.
On June 9 2008, the sprayed asbestos on the ceiling beams was first disturbed and the 45 workers were eventually asked to leave on June 20 when a contractor contacted the Health and Safety Executive (HSE) to say that the contamination had spread outside the sealed area.
The roof was lined with blue asbestos, and the girders were covered in sprayed asbestos insulation which was fluffy and powdery to the touch, according to the writ.
A steam pipe explosion near Gramercy Park in 1989 which killed three people sprayed asbestos into the air - a fact that Con Edison later admitted it concealed for days while residents were exposed.
At Cape's facilities in London, Hebden Bridge, Uxbridge, Manchester, Glasgow, Newcastle, Liverpool, Belfast and the Isle of White, asbestos from its South African mines was turned into a wide range of products including asbestos yarn and cloth, millboard, webbing, insulation mattresses, preformed thermal insulation, sprayed asbestos thermal and acoustic insulation, filtration materials, asbestos cement flat sheets, corrugated sheets, pipes, molded products, slabs, packings and rope lagging.
Canada bans some types of asbestos - especially sprayed asbestos for insulation - but claims Canadian chrysotile asbestos can be used safely in some forms.
Wilson added that the group concludes that the evidence against PCBs, dioxins, sprayed asbestos etc.
It is assumed that all nodes and ceiling penetrations of steel construction were provided with sprayed asbestos.
Source HSE) WHERE TO LOOK OUT FOR ASBESTOS IN BUILDINGS Ceiling Voids: Sprayed asbestos and loose asbestos packing were used as fire breaks in ceiling voids.
Fire Protection: Sprayed asbestos and asbestos in a cement matrix were used as fire protection in ducts, firebreaks, panels, partitions, soffit boards, ceiling panels and around structural steel work.
The contaminant analysis was as follows: - The roof structure includes a total of 2020 m2 of sprayed asbestos (1730 m2 shed gutters, smoke curtains 290 m2).