System maintenance is mandatory pursuant to the Ministerial Decree of 10 March 1998 "General fire safety criteria for emergency management in the workplace".
UNI/CEI technical standards provide guidance on how to perform maintenance. Fire detection systems
UNI 11224:2019 describes the procedures for the initial inspection, surveillance and periodic inspection, maintenance and general verification of automatic fire detection systems.
UNI 11224:2019 Initial inspection and maintenance of fire detection systems
This standard describes the procedures for the initial inspection, surveillance and periodic inspection, maintenance, and general testing of fire detection systems. It is also applicable where the fire detection system is used to activate an automatic extinguishing system or fire safety devices. The purpose of maintenance activities is to verify the functionality of the systems, not their effectiveness, for which reference is made to UNI 9795.
If a fire detection system fails to comply with the best practices, corrective actions are outside the scope of this standard. This standard applies to both new and existing systems.
Replaces: UNI 11224:2011 - The revision was set up taking into account technological updates and its alignment with the contents of the new 2013 edition of UNI 9795 and UNI/TR 11607:2015 and UNI/TR 11694:2017, in particular: - the tests and checks on acoustic and optical signaling equipment have been modified and, above all, implemented; - the tests and checks on ASD systems have been modified and, above all, implemented; - the point on the "general system verification" has been revised, modifying its frequency; - the percentage of the number of points to be checked in alarm over the course of the twelve months has been modified based on the age of the system.
General legal provisions
- DM 10.03.1998 General criteria for fire safety and emergency management in places of
work - Art. 4 “Inspection and maintenance of fire-fighting systems and equipment”.
- Ministerial Decree 37/2008 Regulation concerning the implementation of Article 11- quaterdecies, paragraph 13, letter
to)
of Law No. 248 of 2 December 2005, containing the reorganisation of the provisions regarding the activities of
Installation of systems within buildings. Art. 5 "Obligations related to the operation of the business."
- Legislative Decree 81/2008 Implementation of Article 1 of Law No. 123 of 3 August 2007, regarding health and safety in the workplace. - Annex IV, Chapter 4 "Measures against fire and explosion", paragraph 4.1.3.
- Presidential Decree 151 of 1 August 2011 Regulation simplifying the rules for procedures relating to fire prevention, pursuant to Article 49, paragraph 4-quater, Legislative Decree 31 May 2010, n. 78, converted with amendments by Law 30 July 2010, n. 122
- Ministerial Decree of 7 August 2012 Provisions relating to the procedures for submitting requests concerning fire prevention procedures and the documentation to be attached, pursuant to Article 2, paragraph 7, of Presidential Decree 151/2011
- Decree of 20 December 2012 - Technical fire prevention regulation for active fire protection systems installed in activities subject to fire prevention controls
Main reference standards on fire prevention system maintenance
UNI /UNI EN / UNI CEN/TS / UNI CEN/TR
- UNI EN 54 Fire detection and fire alarm systems (series)
- UNI EN 671-3:2009 Fixed fire extinguishing systems - Hosed systems - Part 3: Maintenance of semi-rigid hose reels and flexible hose wall hydrants
- UNI 9795:2013 Fixed automatic fire detection and alarm systems - Design, installation and operation
- UNI 10779:2014 Fire extinguishing systems - Hydrant networks - Design, installation and operation - UNI 11292:2008 Rooms intended to house pumping units for fire-fighting systems - Construction and functional characteristics
- UNI 11224:2019 Initial inspection and maintenance of fire detection systems.
- UNI 11280:2012 Initial inspection and maintenance of gaseous fire extinguishing systems
- UNI/TS 11512:2013 Fixed fire-extinguishing systems – Components for gas extinguishing systems - Requirements and test methods for compatibility between components
- UNI EN 12094 Fixed firefighting systems - Components of gas extinguishing systems (series)
- UNI EN 12259 Fixed fire protection systems - Components for sprinkler and water spray systems (series)
- UNI EN 16925:2019 Fixed fire protection systems - Automatic residential sprinkler systems - Design, installation and maintenance
UNI EN 12416-2:2007 Fixed firefighting systems - Powder systems - Part 2: Design, construction and maintenance
- UNI EN 12845:2015 Fixed firefighting systems - Automatic sprinkler systems Design, installation and maintenance
- EC 1-2016 UNI EN 12845:2015 Errata corrige 1
- EN 13565-2:2009 Fixed firefighting systems - Foam systems - Part 2: Design, construction and maintenance
- UNI CEN/TS 14816:2009 Fixed fire-fighting systems - Water spray systems - Design, installation and maintenance
- UNI CEN/TS14972:2011 Fixed fire-fighting systems - Water mist systems - Design and installation
- UNI EN 15004 Fixed fire-fighting systems - Gaseous extinguishing systems (series)
- UNI ISO 15779:2012 Fixed fire-fighting systems - Condensed aerosol extinguishing systems - Requirements and test methods for components and design, installation and maintenance of systems - General requirements
METODOLOGIA DELLA SORVEGLIANZA
La sorveglianza e effettuata dal personale incaricato, normalmente presente nelle aree oggetto della protezione con frequenza, giornaliera settimanale o mensile in funzione del tipo di controlli da eseguire e delle dimensioni dell'impianto.
Il controllo deve essere eseguito seguendo le istruzioni specificate nel manuale d'uso e manutenzione dell'impianto e quelle indicate nelle procedure di sicurezza aziendali.
Deve essere previsto almeno un controllo visivo atto a verificare che le apparecchiature siano in condizioni operative ordinarie, non presentino danni visibili e non siano state nascoste/ostruite da materiali di qualsivoglia natura.
II controllo deve prevedere un esame delle segnalazioni di stato presenti sulla centrale di rivelazione e su tutti gli apparati di segnalazione e/o ripetizione periferici, accertando che le stesse abbiano ottenuto la necessaria attenzione.
Si deve inoltre verificare, a livello 1 (UNI EN 54-2:2007 punto 12.6), che la centrale accetti i comandi e che i led ed il display non presentino anomalie di funzionamento (Esecuzione del test lampade se implementato; accensione e/o spegnimento di led, attivazione retroilluminazione display, ecc.).
Controllare, almeno mensilmente, che le parti di ricambio siano presenti nelle quantità previste ed effettuare ii riordino in occasione del loro impiego. Applicare la stessa accortezza per ii materiale di consumo (carta per stampante, ecc.).
La periodicità della sorveglianza deve. essere opportunamente intensificata se ci sono condizioni ambientali
particolari, quali ad esempio:
- installazione in ambienti molto polverosi;
- installazione in ambienti con frequenti cambiamenti di temperatura;
- installazione in ambienti con alto tasso di umidità o presenza di vapori;
- prescrizioni specifiche del costruttore o del progettista.
Stante la particolare complessità dei sistemi di rivelazione fumo ad aspirazione la sorveglianza deve includere, sugli stessi, le seguenti azioni:
- verifica del funzionamento dei led e delle lampade di ripetizione eventi, ad esempio tramite apposito comando;
- verifica e annotazione del valore corrente del flusso (se disponibile) o della presenza di guasto flusso;
- verifica di ogni altra segnalazione di allarme o anomalia rilevabile;
- se presenti, l'ispezione visiva di sifoni per lo scarico della condensa attraverso i tubi di aspirazione;
- controllo visivo dello stato dei tubi di aspirazione e dei relativi supporti in ambienti dove gli stessi sono soggetti a sollecitazioni meccaniche.
