Fire fighting water retention guideline
| Basic data | |
|---|---|
| Title: | Guideline for the dimensioning of extinguishing water retention systems for the storage of substances hazardous to water |
| Short title: | Fire fighting water retention guideline |
| Abbreviation: | LöRüRl |
| Type: | Administrative regulation |
| Scope: | |
| Legal matter: | Environmental law |
| Issued on: | |
| Entry into force on: | |
| Please note the note on the applicable legal version. | |
The extinguishing water retention guideline ( "guideline for the dimensioning of extinguishing water retention systems for the storage of water-polluting substances" ) is a guideline for the prevention of pollution or poisoning of waters in the vicinity of structures in which water-polluting substances are handled or in which in the event of fire such substances can arise.
In the event of a fire , the contaminated extinguishing water that accumulates can be safely collected in recesses or behind protective walls for the duration of the extinguishing work - so-called “extinguishing water retention devices”. Collecting trays , for example, can also be suitable for this.
background
The extinguishing water retention guideline was issued after a series of serious environmental accidents in the vicinity of water. During the extinguishing work on major fires, the contaminated extinguishing water and the environmentally relevant extinguishing agents found their way into neighboring waters , especially rivers . The pollution of the rivers led, among other things, to fish deaths . For example, on November 1, 1986, a major fire in the facilities of the chemical company Sandoz in Schweizerhalle near Basel caused major fish deaths in the Rhine due to contaminated extinguishing water . This major event was the main trigger for the LöRüRl. In Switzerland, the Schweizerhalle disaster led to the Major Accidents Ordinance .
Integration into building regulations
The model guideline was adopted by the ARGEBAU “building supervision” commission in August 1992. All federal states have now introduced the guideline in their building regulations as part of their technical regulations .
applicability
The scope of the guideline begins with the presence of 100 tonnes of water-polluting substances of water hazard class (WGK) 1 per storage section. Substances of higher water hazard classes are converted:
- 1 t WGK 3 substance (highly hazardous to water) = 100 t WGK 1
- 1 t WGK 2 substance (hazardous to water) = 10 t WGK 1
Web links
- Conversion of water hazard classes for checking the applicability of the extinguishing water retention guideline
- Tool for extinguishing water retention volume calculation
Individual evidence
- ↑ Recommendation of the working group “Accident-Related Water Pollution” (H) of the International Commission for the Protection of the Elbe on the problem of extinguishing water retention ( Memento from September 25, 2015 in the Internet Archive ) , August 1993.