Basis for chlorine extinguisher configuration
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This post was last edited by siena2008 on 2009-8-6 at 14:58. Regarding the criteria for determining the number of chlorine extinguishers, questions have been raised in other sections of the forum, but no proper answers have been provided yet. Those who know the answer are kindly asked to share it. For example: What specifications are required for a tank with a capacity of one ton, and how many are needed? What about a 500-kilogram steel cylinder? Thank you! :Handshake: Having seen everyone’s responses, let me explain: it is the basis for determining the number of configurations. For example, a 500 m³ methanol tank requires 1.5 tons of 3% resistance foam, which is calculated in accordance with the \"Design Code for Low-Expansion Foam Fire Extinguishing Systems\". For a 1000 kg chlorine gas cylinder, what amount of chlorine gas extinguishing agent or extinguisher should be provided, and what is the basis for this calculation?
For specific configuration requirements, please refer to: GB-11984-2008 Safety Regulations for Chlorine Gas, and AQ3015—2008 Technical Requirements for Chlorine Gas Scavengers
AQ3014—2008 Technical Requirements for Safe Use of Liquid Chlorine AQ3015—2008 Technical Requirements for Chlorine Scavengers
I have studied these two specifications carefully, but still can’t find the answer. Please advise. 1. AQ3015—2008 Technical Requirements for Chlorine Gas Scavengers http://bbs.hcbbs.com/viewthread.php?tid=431927 2. Code for Design of Fire Extinguisher Installation in Buildings GB 50140－2005 http://bbs.hcbbs.com/thread-234434-1-1.html
I looked carefully, but still couldn’t find the answer. Could you please explain it?
Refer to Clause 3.9 of the chlorine safety regulations: for plant structures used for the production, storage, and use of chlorine in fully enclosed systems, corresponding facilities must be provided. . . ”. . . It must refer to the legendary scavenger.
In our company, for a 1-ton steel cylinder, we usually use about 2 50KG cart-type units. But I’m not sure if it can handle one ton of liquid chlorine; small leaks are no problem. . .
Promotional material from a certain company: 1. Vehicles for transporting liquid chlorine are equipped with 4 kg capacity tanks to prevent leaks from the cylinders during transportation. It is mainly used in liquid chlorine transport vehicles, research institutions, and medical wastewater treatment plants. 2. Six cylinders are to be installed as required at the liquid chlorine storage location and at the point of use for a 18 kg capacity. The main consideration is that it takes about 30 minutes for 6 bottles to be completely emptied through spraying, which provides more than 30 minutes of time for emergency response. By then, the pressure in the pipes or cylinders will have been reduced, making it much easier to seal the leaks. Moreover, most of the leaked chlorine can be neutralized by absorbent powder, thereby reducing harm to people and environmental damage.
I consulted someone who used to work in safety at our factory; it seems that the consideration is based on the leakage time – about 20 minutes of leakage – along with the spraying time of the extinguishers. We originally seemed to have been equipped with 6 units of 25kg each. The Measures for the Review of Conditions for Hazardous Chemicals Production Enterprises in Tianjin to Apply for a \"Work Safety License\" includes an appendix; chlorine gas extinguishers should be equipped with models of 4 kg (1 unit) and 18 kg (1 unit) (this is incorrect – push-type extinguishers are available in 15 kg, 25 kg, and 50 kg capacities; therefore, 25 kg capacity extinguishers should be used).