Passive Fireproofing System for Pipelines

Abstract

A procedure is described for extending the period of time during which a line leg (e.g., a pipeline) made of a material with a coefficient of thermal conductivity λR, in a fireproofing installation remains below a critical temperature and hence for increasing the T-rating value according to ASTM E814 (UL1479). A line leg is wrapped with a mesh, that includes a non-flammable material with a coefficient of thermal conductivity λG, directly adjacent to the bulkheading of a feedthrough opening in a component on both sides for wall feedthroughs and/or above the feedthrough opening for ceiling feedthroughs, subject to the condition that the coefficient of thermal conductivity λG is greater than the coefficient of thermal conductivity λG. The heat removal from a line leg can be supported easily and, in particular, applied on-site such that even line legs with good thermal conductivity can achieve a high T-rating value in the fire test.

Dependencies are inferred from the claim text.