CBRN DEFENSE is a French-speaking defensive portal on chemical, biological, radiological and nuclear risks. It links good reflexes, the limits of PPE, official sources, practical guides and the directory of emergency services and prefectures to help individuals, businesses and communities prepare a prudent response.
A CBRN portal must respond quickly, but without oversimplifying
The term CBRN, or NRBC in French, brings together chemical, biological, radiological and nuclear risks. These risks do not have the same routes of exposure, the same useful equipment or the same priorities. A serious page must therefore begin by orienting the reader: respiratory, skin, eyes, surface contamination, containment, evacuation or business continuity.
CBRN DEFENSE structures the subject as a decision guide. The chemical pages explain gases, vapors, projections and filter limitations. The biological pages cover Hantavirus, respiratory viruses, contaminated dust and disinfection. The radiological pages distinguish between contamination and radiation. The equipment pages link each scenario to masks, gloves, goggles, suits and consumables.
This organization firstly serves the reader. Each guide contains a short summary, frequently asked questions, definitions, useful links, official sources and clear limits to remain in a defensive framework.
The four NRBC families to understand
Chemical: the priority is to identify the substance, the route of exposure and the compatibility of protections. An FFP2 does not protect against gas. Incompatible gloves may deteriorate. An unknown atmosphere requires distance and alert.
Biological: prevention combines ventilation, hygiene, wet cleaning, respiratory protection against particles or aerosols, hand protection, disinfection and waste management. Hantavirus scenarios require avoiding the resuspension of dust.
Radiological and nuclear: PPE especially limits particle contamination. They do not provide universal shielding against radiation. Containment, evacuation and stable iodine instructions are the responsibility of the authorities.
How to use the site
For a quick response, start with the main risk: chemical, biological or radiological. To buy or put together a kit, go to the NRBC equipment page. To prepare a business, open the business continuity guide. To find the services in your area, consult the directory of prefectures and emergency services.
The territorial directory provides access to national, regional, departmental and overseas public sources. It complements the thematic guides without creating repetitive local pages and helps each reader to verify information with the competent authority.
The portal follows a simple hierarchy: a national guide, pages by risk family, thematic files, a glossary, frequently asked questions and official references.
Build a realistic preparation, at your own pace
Preparing does not mean imagining the worst all day long. Above all, it is about calmly looking at what could disrupt daily life: a power cut, a fire, local pollution, an evacuation or a shelter order. From there, everyone can move forward with simple actions, a reasonable budget and verified information.
The right method is progressive. We start with the basic needs of the household, then we take into account housing, the health of the occupants, the territory and possible professional risks. A family with young children, a person undergoing treatment or a business open to the public will not have exactly the same priorities.
Finally, a useful preparation must remain alive. The numbers are verified, relatives know the meeting point, batteries and dates are checked, and official instructions remain accessible. This discreet work provides much more safety than expensive equipment purchased without instructions.
Useful data at a glance
Orders of magnitude and simple controls to adapt to your situation. Local instructions always remain a priority.
CBRN / NRBC
Chemical, biological, radiological and nuclear.
Common base
Move away, alert and follow the instructions.
A local response
Prefecture, town hall and relevant services.
Quick check before you need it
- Identify the major risks in the municipality
- Save channels from the prefecture
- Know the emergency numbers
- Prepare short-term autonomy
- Explain the plan to the members of the household
What priority depending on the situation?
| Situation | Priority | Vigilance point |
|---|---|---|
| Immediate danger | Move away, alert, follow emergency services | Do not try to identify or treat alone. |
| Short break | Light, information, telephone, water | Preserve the battery and avoid flames. |
| Extended event | Rotation of reserves and family plan | Reassess with the information local. |
Adapt the data to each situation
The same list does not suit everyone. These profiles indicate the point to be checked first.
Single person
6 L of water · 1 external contact · 1 accessible bag
Family
Needs by age · meeting point · simple roles
Vulnerable person
Treatments · prescription · identified aid · electrical autonomy
Activity / ERP
Responsibles · register · alert · exercise · stock monitoring
Recommended situations and routes
I want to understand the risk
Start with chemical, biological or radiological in order to link danger, route of exposure, good reflexes and limits of PPE.
Deep: I want to understand the riskI want to prepare a kit
Use the NRBC equipment grid then complete with the 72-hour emergency kit and consumables adapted to the context.
Find out: I want to prepare a kitI am looking for a local source
The directory brings together prefectures, emergency numbers, vigilance and public organizations to consult depending on the territory.
Deep: I am looking for a local sourceFAQ CBRN France Guide
Quick responses to compare uses, limits and protection priorities.
What is the difference between CBRN and NRBC?
CBRN is the English acronym, NRBC the French acronym. Both refer to nuclear, radiological, biological and chemical risks.
Can a CBRN portal be commercial and useful?
Yes, if it clearly separates defensive information, equipment limits, official sources and purchasing links.
Why add a glossary?
The glossary improves understanding and connects similar concepts: exposure, contamination, decontamination, containment, filtration and PPE.
Can we prepare on a small budget?
Yes. Start with organization, documents, water, a lamp and a radio. Then complete it little by little, choosing simple equipment that the household really knows how to use.