Section 1: Scope and definitions

For the purposes of this chapter, the following definitions shall apply

1° "Explosive substance or mixture" means any solid or liquid substance or mixture of substances which is capable in itself, by chemical reaction, of giving off gases at such a temperature, pressure and velocity as to cause damage in the surrounding area. Pyrotechnic substances are included in this definition, even if they do not release gas;

2° "Pyrotechnic substance or mixture" means any substance or mixture of substances intended to produce a calorific, luminous, audible, gaseous or smoke-producing effect, or a combination of these effects as a result of self-sustained exothermic chemical reactions which do not detonate;

3° "Explosive substance or article" any explosive substance or any article containing one or more explosive substances or mixtures intended to be used for the effects of their explosion or for pyrotechnic purposes;

4° "Workstation" any area assigned to the performance of a task by one or more workers, which may include the area for the temporary storage of products in the associated flow;

5° "Work area" any area in which one or more workers are required to move to carry out a defined task. This area may include one or more workstations;

6° "Pyrotechnic installation" means any premises, loading and unloading area, parking area, inspection area, testing area, destruction area, mobile manufacturing unit or transport vehicle, under the control of the employer, containing or using an explosive substance or object;

7° "Pyrotechnic enclosure" means the perfectly delimited part of the site where pyrotechnic installations are located;

8° "Site" means any place where one or more installations belonging to one employer are located;

9° "Multi-employer pyrotechnic site" means any place to which access is regulated and monitored at all times and where several fixed installations belonging to different employers are located, at least one of which is a pyrotechnic installation;

10° "Pyrotechnic event" means any uncontrolled detonation, deflagration, combustion or decomposition of explosive substances or objects;

11° "Pyrotechnic effect": any physical phenomenon involving excess pressure or the projection of fragments, thermal, toxic or telluric, occurring as a result of a pyrotechnic event;

12° "Domino effect" means any pyrotechnic event occurring in one or more installations, the effects of which trigger another event in another installation, leading to a general worsening of the effects of the first event;

13° "Severity" means the extent of the foreseeable damage suffered by people or property exposed to the effects of a pyrotechnic event;

14° "Pyrotechnic risk" means the combination of the probability of being exposed to pyrotechnic effects and the severity of these effects;

15° "Potential site of a pyrotechnic event" means any place where an explosive substance or object is present;

16° "Exposed site" means any work location or installation, within a site or multi-employer pyrotechnic site, exposed to pyrotechnic effects occurring in a potential site of a pyrotechnic event;

17° "Safety perimeter" means any area in which the presence of any person is prohibited and in which all the effects of a pyrotechnic event resulting from the deliberate operation of an explosive substance or article during experimentation or testing, or occurring during the destruction of an explosive substance or article, are confined.