ISO 14520-14-2015 PDF

Full title and description

St ISO 14520-14-2015 — Gaseous fire‑extinguishing systems — Physical properties and system design — Part 14: IG‑55 extinguishant. This part gives specific requirements and design information for systems using IG‑55 (argon/nitrogen inert gas mixture), including physical properties, storage/pressurisation data and safety considerations for total‑flooding systems.

Abstract

ISO 14520‑14:2015 provides data and design guidance specific to the IG‑55 extinguishant (nominally a 50/50 argon/nitrogen blend). It covers physical properties, specification limits, storage/pressure options and the intended use for total‑flooding gaseous fire‑extinguishing systems, and notes the nominal cylinder pressures covered by the document.

General information

• Status: Published (current version confirmed after periodic review).
• Publication date: 13 February 2015 (ISO edition 3, 2015‑02).
• Publisher: International Organization for Standardization (ISO).
• ICS / categories: 13.220.10 (Fire protection and fire fighting equipment).
• Edition / version: Edition 3 (2015).
• Number of pages: 7 (compact technical part focused on agent‑specific data).

Scope

Specifies physical properties, agent specification and design data for IG‑55 as the extinguishant in gaseous fire‑extinguishing systems. The part addresses systems stored and operated at nominal filling pressures of 150 bar, 200 bar and 300 bar (all referenced to 15 °C) and gives the agent information required for system design and safe use in enclosed (total‑flooding) hazards.

Key topics and requirements

• Agent identity and composition: IG‑55 is an inert gas mixture nominally consisting of 50 % argon and 50 % nitrogen; typical purity and moisture limits are specified by suppliers and used for system certification.
• Physical properties and thermodynamic data needed for cylinder filling, pressure/temperature behaviour and volume calculations.
• Specified nominal cylinder filling pressures covered by the part: 150 bar, 200 bar and 300 bar (at 15 °C) and implications for storage and piping design.
• Guidance for application: total‑flooding use, expected flood times and target concentrations/oxygen reduction ranges to achieve extinguishment without creating undue risk to occupants.
• Safety and handling considerations for high‑pressure inert gas systems (storage, testing/refill intervals, leak considerations and personnel safety during discharge).

Typical use and users

Used by fire protection engineers, system designers, specifiers, manufacturers and certifying bodies involved in designing, installing and commissioning inert gas total‑flooding systems (data centres, telecom rooms, archives, museums, control rooms and other areas where residue‑free suppression is required and occupant‑safety considerations must be addressed).

Related standards

ISO 14520‑14 is one part of the ISO 14520 series (other parts cover a range of clean agents and inert gas blends). It is commonly used alongside national/regional installation and maintenance standards (for example NFPA 2001, EN/BS standards such as EN 15004 and equivalent local codes) and other parts of ISO 14520 that provide general requirements and agent‑specific data for other extinguishants.

Keywords

IG‑55, Argonite, inert gas, gaseous extinguishing, clean agent, total‑flooding, system design, cylinder pressure, ISO 14520, fire protection.

FAQ

Q: What is this standard?

A: ISO 14520‑14:2015 is the IG‑55‑specific part of the ISO 14520 series that provides physical properties, specification limits and design data for gaseous fire‑extinguishing systems using the IG‑55 inert gas mixture.

Q: What does it cover?

A: It covers agent identity and properties, nominal storage/operating pressures (150/200/300 bar at 15 °C), and the information designers need for safe total‑flooding system specification, storage and use.

Q: Who typically uses it?

A: Fire protection engineers, system designers, manufacturers of extinguishing systems, testing/inspection bodies and facility managers responsible for protected enclosures where inert gas suppression is specified.

Q: Is it current or superseded?

A: The 2015 edition (Edition 3) is the current published version of ISO 14520‑14; the ISO record shows the 2015 edition and indicates the publication was reviewed (confirmed) in a later review cycle, leaving this edition current at the time of the review.

Q: Is it part of a series?

A: Yes — ISO 14520 is a multipart standard covering physical properties and system design for multiple gaseous extinguishants; Part 14 is the IG‑55 (Argonite) specific part and other parts cover other agents and general requirements.

Q: What are the key keywords?

A: IG‑55, Argonite, inert gas, clean agent, gaseous suppression, total‑flooding, cylinder pressure, system design, ISO 14520.