Issues regarding the provision of emergency ponds at natural gas comprehensive stations
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When I was designing the natural gas comprehensive station, experts recommended the installation of a fire emergency tank. This project is being carried out in two phases: the first phase involves building a natural gas pressure regulation and supply station equipped with two 100-cubic-meter CNG storage tanks, while the second phase entails constructing an LNG pressure regulation and supply station fitted with two 50-cubic-meter LNG storage tanks. At present, only the first phase is under construction, as there was no prior requirement for a fire emergency tank. Is there any solid evidence to support the idea that a natural gas comprehensive station does not need such a tank? I would be extremely grateful if experts could provide guidance on this matter.
There’s no need to set up an accident emergency tank, right? An accident tank is used to collect any materials that leak out in the event of an accident, as well as contaminated fire-fighting water and rainwater that occurs during such incidents. Since CNG is a gas, it cannot enter the collection tank. Moreover, fire-fighting water cannot form a mixed liquid with CNG when used to extinguish CNG fires or disperse leaked CNG, so it does not contaminate the fire-fighting water; the same applies to rainwater. Therefore, there is no need to install an emergency containment tank. The relevant specifications can be found in SY1190; this standard specifies that the accident fluids to be collected are limited to liquefied hydrocarbons of C4 grade and above. In other words, if the materials stored are petroleum hydrocarbons of C4 grade or higher, then a collection plan needs to be considered, whereas no such plan is necessary for petroleum hydrocarbons of C3 grade or lower. We have encountered this issue before; when determining the volume of the accident emergency pool, it is possible to exclude the storage amount of C3 within the reservoir from the calculations, and calculate the capacity based only on the materials of C4 and above.
”Experts proposed a fire emergency pool “? Which regulation and clause does it follow? If he can make requests, he needs to provide a basis for them.