SIST EN 16750:2017/kFprA1:2020

Fixed firefighting systems - Oxygen reduction systems - Design, installation, planning and maintenance

This European standard specifies oxygen reduction systems that are used as fire prevention systems by creating an atmosphere in an area which is having a lower permanent oxygen concentration as in ambient conditions. The level of oxygen reduction is defined by the individual risks of these areas (see Annex A). Oxygen reduction is achieved by technical systems which are providing a flux of air containing a reduced concentration of oxygen.
This European standard specifies minimum requirements and defines the specifications governing the design, installation and maintenance of fixed oxygen reduction systems with oxygen reduced air in buildings and industrial production plants. The standard also applies to the extension and modification of existing systems.
This European standard applies to oxygen reduction systems using nitrogen which are designed for continual oxygen reduction in enclosed spaces.
NOTE   Nitrogen is today the most suitable gas to be used for oxygen reduction. For other gases this European standard can be used as basis.
This European standard does not apply to oxygen reduction systems that use water mist or combustion gases.
The European standard does not apply to:
-   explosion suppression systems;
-   explosion prevention systems;
-   fire extinguishing systems using gaseous extinguishing agents;
-   inertization of portable containers;
-   systems in which oxygen levels are reduced for reasons other than fire prevention (e.g. steel processing in the presence of inert gas to avoid the formation of oxide film);
-   inerting required during repair work on systems or equipment (e.g. welding) in order to eliminate the risk of fire or explosion.
In addition to the conditions for the actual oxygen reduction system and its individual components this European standard also covers certain structural specifications for the protected area.
The space protected by an oxygen reduction system is a controlled and continuously monitored indoor climate for extended occupation. This standard does not cover unventilated confined spaces that may contain hazardous gases.

Ortsfeste Löschanlagen - Sauerstoffreduktionsanlagen - Auslegung, Einbau, Planung und Instandhaltung

Installations fixes de lutte contre l'incendie - Systèmes d'appauvrissement en oxygène - Conception, installation, planification et maintenance

Vgrajeni gasilni sistemi - Sistemi z zmanjšano koncentracijo kisika - Projektiranje, vgradnja, načrtovanje in vzdrževanje

General Information

• Status: Not Published
• Public Enquiry End Date: 09-Nov-2019
• ICS: 13.220.10 - Fire-fighting
• Technical Committee: POZ - Požarna varnost
• Current Stage: 98 - Abandoned project (Adopted Project)
• Start Date: 05-Oct-2020
• Due Date: 10-Oct-2020
• Completion Date: 05-Oct-2020
• Ref Project: EN 16750:2017/FprA1 - Fixed firefighting systems - Oxygen reduction systems - Design, installation, planning and maintenance

Relations

• Consolidated By: SIST EN 16750:2017+A1:2020 - Fixed firefighting systems - Oxygen reduction systems - Design, installation, planning and maintenance
• Effective Date: 01-Nov-2020
• Amends: SIST EN 16750:2017 - Fixed firefighting systems - Oxygen reduction systems - Design, installation, planning and maintenance
• Effective Date: 01-Nov-2019

Overview - EN 16750:2017/FprA1 (CEN)

EN 16750:2017/FprA1 is a European standard from CEN that defines minimum requirements for fixed firefighting oxygen reduction systems used as fire prevention measures. The standard covers the design, installation, planning and maintenance of systems that reduce and continuously control oxygen concentration in enclosed spaces (typically by nitrogen injection) to prevent fire ignition. It applies to buildings and industrial production plants, including extensions or modifications of existing systems, and sets requirements for the protected area as a continuously monitored indoor climate for extended occupation.

Key topics and technical requirements

• Scope and exclusions: Applies primarily to nitrogen-based systems designed for continual oxygen reduction. It does not apply to water mist, combustion gases, explosion suppression/prevention systems, gaseous extinguishing agents, inerting of portable containers, process-related oxygen reductions (e.g., steel processing), or temporary inerting for repairs.
• Design and installation: Minimum specifications for system components, layout and structural considerations of the protected area; requirements support permanent occupancy and safe access.
• Oxygen-reduced air quality: The gas supplied must be free of dangerous impurities. The draft amendment clarifies minimum nitrogen concentration so that the injected volume required to lower oxygen to the target level does not exceed 20% of the protected room volume, taking room pressure and temperature into account.
• Performance calculations and monitoring: Defines how to determine target and residual oxygen concentrations (see Annex A for risk-based target levels). Systems require continuous monitoring, alarms and safety controls to maintain safe, regulated atmospheres.
• Signage and structural measures: Requires warning signs and entry controls for oxygen-reduced areas (ISO 7010 symbols are referenced), plus structural and technical measures to contain the controlled atmosphere.
• Maintenance and modifications: Procedures and schedules for inspection, testing and safe modification or extension of systems.

Applications - who uses EN 16750

• Fire protection and safety engineers designing fire-prevention systems
• System manufacturers and installers of oxygen-reduction equipment
• Facility and plant managers in industrial, storage and archival environments
• Building services and HVAC professionals integrating continuous-atmosphere control
• Safety officers, insurers and regulatory authorities assessing risk mitigation
• Maintenance teams responsible for periodic testing, monitoring and documentation

Related standards and references

• CEN/TC 191 - technical committee responsible for fixed firefighting systems
• ISO 7010 - standardized safety signage referenced for oxygen-reduced area warnings
• Other CEN/ISO standards on fire safety, fixed firefighting and gas-detection systems (consult national standards bodies for exact cross-references)

EN 16750:2017/FprA1 is the authoritative reference for organizations specifying or operating continuous oxygen reduction systems for fire prevention, helping ensure safe design, reliable operation and regulatory compliance.

Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN 16750:2017/oprA1:2019
01-november-2019
Vgrajeni gasilni sistemi - Sistemi z zmanjšano koncentracijo kisika - Projektiranje,
vgradnja, načrtovanje in vzdrževanje
Fixed firefighting systems - Oxygen reduction systems - Design, installation, planning
and maintenance
Ortsfeste Löschanlagen - Sauerstoffreduktionsanlagen - Auslegung, Einbau, Planung
und Instandhaltung
Installations fixes de lutte contre l'incendie - Systèmes d'appauvrissement en oxygène -
Conception, installation, planification et maintenance
Ta slovenski standard je istoveten z: EN 16750:2017/prA1
ICS:
13.220.10 Gašenje požara Fire-fighting
SIST EN 16750:2017/oprA1:2019 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

SIST EN 16750:2017/oprA1:2019
SIST EN 16750:2017/oprA1:2019
DRAFT
EUROPEAN STANDARD
EN 16750:2017
NORME EUROPÉENNE
EUROPÄISCHE NORM
prA1
August 2019
ICS 13.220.20
English Version
Fixed firefighting systems - Oxygen reduction systems -
Design, installation, planning and maintenance
Installations fixes de lutte contre l'incendie - Systèmes Ortsfeste Löschanlagen - Sauerstoffreduktionsanlagen -
d'appauvrissement en oxygène - Conception, Auslegung, Einbau, Planung und Instandhaltung
installation, planification et maintenance
This draft amendment is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee CEN/TC 191.

This draft amendment A1, if approved, will modify the European Standard EN 16750:2017. If this draft becomes an amendment,
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for inclusion of
this amendment into the relevant national standard without any alteration.

This draft amendment was established by CEN in three official versions (English, French, German). A version in any other
language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC
Management Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and
United Kingdom.
Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are
aware and to provide supporting documentation.

Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without
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