ISO 14520-17:2022 pdf download – Gaseous fire-extinguishing systems — Physical properties and system design — Part 17: Halocarbon Blend 55. 1 Scope This document provides specific requirements for gaseous fire-extinguishing systems with respect to the Halocarbon Blend 55 extinguishant. It includes details of physical properties, specification, usage and safety aspects. It also covers systems operating at nominal pressures of 25 bar, 35 bar and 42 bar, superpressurized with nitrogen. This document does not preclude the use of other systems. NOTE 1 bar = 0,1 MPa = 10 5 Pa; 1 MPa = 1 N/mm 2 . 2 Normative references The...