Expired fire extinguisher how harm?

With the increasing awareness of national fire protection, various types of fire extinguishers have been widely deployed in factories, institutions, schools, hotels, restaurants, shopping malls, automobiles, trains and Other places as an effective tool for fighting initial fires. Because the fire extinguisher is a pressure vessel, coupled with people's use of fire extinguishers, lack of maintenance knowledge, and some of the fire extinguishers themselves are of poor quality and other reasons, fire extinguisher explosion injury accidents occur from time to time.

The firefighting department stated that there are no relevant regulations and regulations for the management of the recycling of discarded fire-fighting equipment. That is to say, there is no specific unit responsible for recycling and disposal of fire-fighting equipment. Therefore, legislation is needed to regulate it.

It is understood that for the fire extinguisher scrapping and recycling problems, the Ministry of Public Security has only issued a set of technical guidelines, requiring the scrapping of fire extinguishers that have abnormal conditions, and recommend sending them to the manufacturer for scrapping. Because it is not a compulsory measure, fire extinguisher recycling is currently under regulatory vacuum.

Take the dry powder fire extinguisher as an example. Under normal circumstances, the portable pressure storage type dry powder fire extinguisher uses about 1.2 MPa of pressure , which is equivalent to 12.24 kg of force. The relevant tests conducted by the fire department show that in an open environment, an explosive fire extinguisher will make it 5 meters around . The people inside are at risk. Excessive pressure on the extinguisher, prolonged contact with the heat source, damage to the tank, poor maintenance and other reasons can cause the extinguisher to explode.

Retirement period: From the date of manufacture, fire extinguishers must be scrapped for the following years: portable chemical foam fire extinguishers for 5 years; portable acid-alkaline fire extinguishers for 5 years; portable water fire extinguishers for 6 years; portable dry powder fire extinguishers for 8 years; Pressure dry powder fire extinguisher for 10 years; portable carbon dioxide fire extinguisher for 12 years; cart type chemical foam fire extinguisher for 8 years; cart type dry powder fire extinguisher for 10 years; cart storage pressure dry powder fire extinguisher for 12 years; cart type carbon dioxide fire extinguisher for 12 years.

Safe use : Carbon dioxide and pressure dry powder fire extinguisher cannot be stored in high temperature place to avoid physical explosion. After use, the fire extinguisher is strictly prohibited to disassemble without authorization, to prevent the explosion of the fault fire extinguisher in the process of disassembly and assembly, and it should be sent to the maintenance and repair unit. If there is a serious fire extinguisher rust or deformation of the cylinder, as well as the number of years of retirement, it should be immediately stopped and sent to the maintenance unit for disposal. It is forbidden to sell fire extinguishers as scrap iron. The fire extinguisher should be handled with care during handling so as to avoid explosion after collision and deformation.

Immature tips

Proposal 1: Responsible departments to recycle. The most straightforward way to recover fire extinguishers is the uniform recovery of fire brigades, which can completely prevent expired fire extinguishers from being re-listed.

Proposal 2: The seller can trade for the old one. Dealers and manufacturers have business contacts to facilitate the recovery of fire extinguishers. “The manufacturers are all in the suburbs, and some factories are still in the field. It is too unrealistic for the individuals to send them.” If the seller can carry out the trade-in business, it is more convenient for consumers. .

Proposal 3: Recycling at the annual inspection of automobiles. Personal purchase of fire extinguishers is mainly based on vehicle-mounted fire extinguishers. This is also a rigid requirement for annual inspections of automobiles. Therefore, when setting up a recycling project for annual inspections, it should be feasible.

Some of the information in this article comes from the Internet and is reorganized and edited by China Rescue Equipment Network.