UNI EN 15004-1:2025
Installazioni fisse antincendio - Sistemi a estinguenti gassosi - Parte 1: Progettazione, installazione e manutenzione

Data disponibilità: 05 marzo 2025

 

La norma tratta i sistemi a saturazione totale relativi principalmente a edifici, impianti industriali e altre applicazioni specifiche, che utilizzano agenti estinguenti gassosi elettricamente non conduttivi che non lasciano residui dopo lo scarico e per le quali sono attualmente disponibili dati sufficienti per consentire la verifica delle caratteristiche di prestazione.
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In comparison with the previous edition, the following technical modifications have been made:
- the Scope has been extended to cover an additional agent, halocarbon blend 55;
- the extinguishants from EN 15004-3 (HCFC Blend A, HCFC 123, HCFC 22 and HCFC 124) has been deleted from the Scope, Table 1 as EN 15004-3 was withdrawn;
- subclause 5.2.1 has been amended to require upper limit threshold concentrations to be established or any impurity that could result in acute toxicity at concentrations below the cardiac sensitization NOAEL of the agent. Subclause G.4.4 has also been added to provide further information on these requirements;
- a new subclause (6.4.4.2) has been added requiring that in the event of an electrical actuator being removed from a container valve or selector valve, an audible and visual alarm is to be provided at the control panel;
- a new subclause 7.3.5 on elevation change has been added;
- subclause 7.4.1 has been amended to draw attention to EN ISO 21805;
- a new subclause (7.5) has been added providing guidance regarding the effects of noise that can be caused by the alarm devices or the discharge of the agent;
- subclause 7.6.1.3, (previously 7.5.1.3) has been amended to give several scenarios to explain the recommended selection of regular and high hazard design concentrations;
- Annex I has been added to reflect the content of the withdrawn document ISO/TR 12854;
- Annex J has been added to reflect the content of ISO/TR 23107 (to be withdrawn).