Life jackets you don't know teach you how to dress properly
2018-09-12
With the arrival of the summer, island tourism is favored, and more and more people participate in water recreation and boating projects. However, the sea is ruthless and the security risks cannot be ignored. At the crucial moment, the role of the life jacket is very important.
According to data from the Japan Coast Guard, in the past five years, those who did not wear life jackets had a death rate four times that of the wearer. This year, the Maritime Safety Administration of Japan’s Ministry of Land, Infrastructure, Transport and Tourism has strengthened the management of life jackets, requiring small ship occupants to wear life jackets on the deck. If there is a violation, the captain will be punished.
Gao Bo, founder of the Shanghai Urban Rescue Team, said that life jackets, as individual life-saving equipment, are indispensable protective equipment in the fields of shipping, fishing, water and terminal operations, and water sports. It is easy to wear and can make the wearer including the comatose person automatically float in the water and keep the wearer's face above the water level without drowning.
Common life jackets include marine life jackets, marine work life jackets, leisure life jackets, and life jackets for civil aviation. According to Gao Bo, life jackets are generally available in both inflatable and filled configurations. The inflatable life jacket is mainly made of high-strength waterproof material. It consists of sealed inflatable vest airbags, miniature high-pressure gas cylinders and quick inflation valves. It is suitable for use in shipping with limited storage space. Filled life jackets are often made of nylon cloth or neoprene. The center is filled with buoyant materials such as foam to provide greater buoyancy. The general marine life jackets are filled.
Pan Tao, a major in rescue and salvage engineering at Dalian Maritime University, said that life jackets need to meet two safety features: First, in calm fresh water, the mouth of the exhausted or unconscious person can be lifted out of the water by at least 12 cm; Flip the unconscious person in the water from any position to a position above the surface of the mouth for no more than 5 seconds. In addition, to ensure the floating process, the buoyancy standard is ≥ 7.5 kg / 24 hours, buoyancy can not be reduced by more than 5% for 24 hours when immersed in water; to ensure the efficiency of life-saving, it is easy to wear, the structural requirements can make 75% never pass through the life jacket The person wears it properly within 1 minute. After the demonstration, everyone can wear it in 1 minute.
How to wear it properly
How to properly wear a life jacket? According to Gao Bo, life jackets that meet the standards are generally only worn one way or as little as possible. The key is to have a safety awareness, take the initiative to consciously wear a life jacket, "make your own hero." He detailed the basic structure and wearing method of the three types of life jackets most commonly used in life.
Casual life jacket. People who wear recreational activities on the water and take a passenger boat need to wear a common padded life jacket. Generally orange, it can stimulate the optic nerve, which is easier to find and improve survival rate. It consists of four sheets of buoyancy foam on the front chest and back, with reflectors on both shoulders. If it is a life jacket on a passenger ship, the left chest pocket should be equipped with tools such as a whistle and a life jacket lamp. When wearing a vest like a vest with the side of the reflector facing out, carefully check that the buckles or straps on the chest and underarm are secure. In order to enhance the firmness of some life jackets, there are two straps in the lower part of the back, that is, the underarm belt, which is connected to the two pieces of buoyancy foam on the chest through the ankle. In the event of an emergency, even if you do not have a belt, you can use a shoelace, tie, silk scarf, etc. as a connection to fix the life jacket on your body.
Children's life jackets. In order to protect the safety, life jackets are divided into children and adults. Children's life jackets generally have large collars that support the child's head and are not in the water; they are equipped with an ankle strap to prevent the life jacket from slipping out of the body and have an upward force on the buttocks to make it supine in the water. When wearing it, you need to keep the life jacket as tight as possible to prevent the child from being petite and slippery.
Inflatable life jacket. Inflatable life jackets for civil aviation are generally placed under the seats or under the armrests to distinguish between infants and adults. When in use, first put the uninflated life jacket on the shoulder of the person, fasten the strap, usually equipped with an automatic manual unit inflator, automatically inflate within 5 seconds after falling water at normal temperature, if necessary, make up through the mouth inflation valve buoyancy. It should be noted that passengers must first escape from the aircraft before inflating the life jacket.
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