A DEF Network company


Fire safety system

Recommended solutions

Gamme nucléaire


Baies et coffrets

Détection de gaz

Détection par sonde thermique

Détection linéaire de température

Nuclear range

– Products certified for nuclear application
– Special testing and traceability process

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To ensure product longevity and reliability under extreme conditions, the nuclear authorities have recognized DEF’s products and solutions through seismic, irradiation and ageing qualification.

In addition, equipment for nuclear application are subject to specific testing, rigorous controls and final adjustment on our dedicated integration platform, before being sent to site for installation. Finally, another series of tests is performed on site, during commissioning, to confirm the equipment’s performance and alignment with initial specification requirements.

Phénix PP redundant aspiration system

– Product certified for nuclear application
– Redundant system

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On premises exposed to radiation, aspirating smoke detection has proved to be particularly effective. Capable of earlier detection compared to a localized detector, its operating principle of transporting the smoke to a remote analytical chamber separates the electronic circuits from the irradiated areas. The air sample is then sent back to the contaminated areas.

The Phénix PP system includes two Phénix aspirating smoke detectors which are functionally independent and operate in redundancy to ensure uninterrupted smoke detection.

Special bays and cabinets

– Installation by our own teams
– seismic qualification
– Pre-tested on our dedicated platform

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To satisfy specific requirements (particularly seismic) associated with the use of our bays and cabinets in nuclear and industrial environments, the DEF Network has set up a dedicated team who specialize in certification, integration, testing and packaging of that equipment.

The Mimic Panels (also known as Synoptic) are report tables that notify emergency response teams of the presence of a fire in or around the affected area. If allowed by local regulations, optional features are available to incorporate fire protection control switches. The diagrams’ Lexan is based on the blueprints of each building and includes a status LED light for each monitored area.

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Related services


Musée du Louvre

Paris (75)

Complete migration of the Fire Safety System and safety PA system.

Institut Pasteur

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Overhaul of the Fire Safety System.

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Detection and extinguishing solutions.

DEF, the leading European manufacturer of fire safety systems, offers a wide range of solutions dedicated to the safety of your site. DEF relies on its network of expert companies to meet all the challenges of any operator, to ensure the protection of people and property.
With DEF, opt for 360 ° safety!
DEF ensures the optimal availability of your Fire Safety System by implementing the resources of a manufacturer, its teams of experts, its certified products, its tested processes and its experience.
Since 1958, DEF has been designing, developing and manufacturing fire detection and fire safety products. Today, its product range integrates related professions and makes it possible to respond to the problems of buildings of very different sizes and types with a solution dedicated to fire safety. DEF offers you to find its products in its catalogue.
Network of expert companies in fire safety