\"Code for Fire Protection Design of Petrochemical Enterprises\" 2008
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The new regulations require that, when the effective volume of a floating-roof tank storage area does not meet the specified requirements, an accident pool must be taken into consideration. Does this accident pool serve the same purpose as those used in sewage treatment plants? Can the accident pool existing in a sewage treatment plant be used as a substitute?
Generally, accident treatment tanks are quite large; if the tank for treating sewage-related accidents is big enough, I think it should be possible.
The function of the accident tank is the same as that of the fire dike: it stores the oil that cannot be contained by the fire dike. If the wastewater treatment tank meets the requirements, it can be used as a substitute.
I think this accident pool is pure waste of **money; I have no idea who came up with such a bad idea. Once an oil leak occurs, the integrity of the tank area can no longer be maintained; oil leaks everywhere. What’s the use of an accident pool then? 1. The tightness of the fire dike against the ground. 2. The tightness of the pipes passing through the fire dike. How can this be ensured properly?
Some fire dikes are very tall, which allows the dikes to be built lower. I made a mistake in my design back then; I thought that the arch-shaped tanks were also half that height. Thinking about it now makes me break into sweat……
You don’t need to worry about this accident storage tank; all storage tanks are treated as if they are 100% full. This requirement is in place to find a solution for the renovation of old plants. The approach involves installing drainage ditches around the fire dike, so that when the fire dike becomes full, the liquid overflows into these ditches and from there flows into the accident storage tank. This pool is located near the fire dike. Due to the hazards associated with open ditches and the need for sufficient space, I would like to remind everyone once again: unless it is a renovation of an existing factory, do not consider installing such an accident pond unless it is absolutely necessary
There is a difference between an accident tank and a sewage accident collection tank; the water in an accident tank can be collected, treated, and reused, while the water collected in a sewage tank can only be discharged after undergoing environmental protection treatment
Let’s discuss whether, if an accident storage tank is to be built, it should be connected to the clean water system or to the sewage system
The accident pool should be independent to facilitate post-incident handling and recovery
I agree with the engineer on the 6th floor; where there is already a spill tank, it would be better to increase the area of the dike surrounding the tank area. Personally, I believe that the accident pond mentioned here should not be used interchangeably with the accident pond for sewage treatment; firstly, it is a waste, and secondly, it is unsafe.
To standardize it means to follow those standards; it has to be done regardless of whether it’s necessary or not