Collar
Firestopping of service penetrations, Best practice in design and installation, was published in 2020. It is a collaboration between ASFP (Association for Specialist Fire Protection), FIS (Finishes and Interiors Sector), GPDA (Gypsum Products Development Association), BESA (Building Engineering Services Association) and BSRIA (Building Services Research and Information Association).
It defines a collar as: ‘A pipe closure device incorporating an outer casing which acts as a restraint for an intumescent material, enabling the collar to be either surface fixed to the fire-separating element or incorporated within it.’
--BSRIA
See also: Fire collar.
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