ISO 19353:2019 pdf free
ISO 19353:2019 pdf free.Safety of machinery一Fire prevention and fire protection
Following the determination of the limits of the machinery, reasonably foreseeable fire hazards shall be identified, taking into consideration the phases of machinery life in which a fire hazard can be present.
NOTE See Clause 4 for a general discussion on the nature of fire hazards.
All reasonably foreseeable fire hazards associated with the various uses of the machine shall be identified. The hazard can be identified according to the fire loads and ignition sources (see Figure 4).For the determination of fire scenarios according to fire loads and ignition sources and for an estimation of the fire risk, the procedures outlined in ISO 12100 shall be followed. The procedure provides a sequence of logical steps allowing systematic examination of the fire hazards arising from the machinery and/or the work process (see Figure 3).
Identification of fire hazards shall include the following steps:
一identification of intended and reasonably foreseeable operating conditions;
一identification of combustible and/or flammable materials that are related to the fire hazard (all materials involved in the machine and process, including raw and process materials);
一evaluation of their ignitability, flammability, combustibility, fire supporting effect and toxic issues;
一estimation of the fire load based on the main combustible materials (fuel);
一identification of all possible ignition sources (e.g. heat) that can contribute to an ignition event;
一identification of fire scenarios according to fire loads and ignition sources: all reasonably foreseeable scenarios that can lead to an ignition of the combustible and flammable materials, including scenarios brought about by human errors such as exchange of substances, improper operation of the machine, or improper maintenance.
Once the fire hazards (fire scenarios) have been identified, the risk of occurrence of a fire shall be determined by estimation. Risk estimation provides information required for the risk evaluation, which in turn allows judgements to be made about whether or not risk reduction is required. Risk estimation depends on the existence of a fire hazard, the frequency at which the machine is exposed to the fire hazard, the probability of a fire occurring once exposure to hazard is present and the degree of possible harm.ISO 19353 pdf free download.
