ISO 14520-17 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 tothe Halocarbon Blend 55 extinguishant. It includes details of physical properties,specification, usageand safety aspects. It also covers systems operating at nominal pressures of 25 bar, 35 bar and...