What are the types of life rafts?
1. Rigid life raft
Rigid life rafts are also called traditional life rafts. The structure is to use galvanized iron, aluminum alloy plates, stainless steel plates or hard plastic materials for the four weeks of life rafts to make several linked air boxes as the main buoyant part of the life raft.Then cover or does not cover the flame retardant material; the top of the raft is equipped with a fixed rigid Tent and entrance, and the bottom of the raft is a wooden lattice board.Usually stored on the sliding shelves on the side of the Ship or driving the deck of the table. When the slide is opened, the slide is opened.
The biggest feature of such life rafts is the simple structure and low cost; but its size is large, heavy and less carrier.
2. Inflatable life raft
The inflatable life raft is divided into qi -deficient life rafts, qi -type life -saving floats, and bloating self -supporting righteous life rafts.
(1) Bloating life raft
Such life rafts provide buoyancy from upper and lower floating tots made of rubber materials. They are made of double -layer waterproof nylon cloth into tents, and they are swollen into round, elliptical or polygons with gas.After the life raft is stacked, it is stored in the glass reinforcement storage cylinder with the genus.The design of the qi -blee -type life raft is advanced, tight structure, good safety, convenient movement, simple operation, and rapid formation, so it is widely used in various civilian and military ships at sea.
There are two types of bloating life rafts, namely mechanical hanging type and throwing type.The mechanical Hanging raft has been inflated before entering the water; the throwing life raft is inflated and shaped on the sea surface, and the life raft may be overwritten during the inflatable formation process.Essence
(2) Blay -type life -saving floating glute
In addition to no tents, the qi -bleaching life -type rescuer, its manufacturing materials, main structure, performance requirements, forming process, storage requirements, genus equipment, etc., are the same as the qi -type life raft, but the application method only has throw -in type investment types.EssenceIt does not have a Tent. After the raft is inflated on the water surface, the personnel in the water can be set in the two asymptom platform or any side of the floating glute from the two sides of the floating glute, which is convenient and fast.The rated passengers are more than 50 people with the bloat -type life rafts with tents, and they can carry up to 50 people.
The double -layer raft of the life -saving floats is located between the upper and lower floating tires.Therefore, regardless of whether it is applied by the sea conditions, the floating glute is in a state of romance (available on both sides) after inflating the sea surface, and no manual correction is required.This kind of life -saving floating glute has a greater impact on sea conditions and climate because there is no Tent, and the main equipment is on the passenger wheel.
(3) Blay qi self -supporting righteous life raft
In order to overcome the overwriting situation of the qi -jellyfield life raft during the formation of the sea surface, to avoid the difficulty of launching the water to support the righteous raft, and to meet the needs of the maritime survival personnel on safety and rapid response.Once such life rafts are overwhelming during the casting process, because the top of the raft is round, it can reduce the contact surface with water.After the inflatable formation is completed, you can correct it yourself.
Bloating life raft performance requirements
1. In terms of life raft, it should be able to withstand exposure of floating for 30 days under all sea conditions.
2. The life raft and its genus can be used safely and normal after being put into the water from the 18M altitude.
3. The life raft floats on the water, and it can withstand that at least 4.5m above the bottom of the raft can repeat the height of the height, not damaged, and does not affect normal use.
4. All passengers and geniuses of life rafts and a sea anchor can be released. They can be dragged at a speed of 3 KN in static water and are not damaged.
5. The life raft should be equipped with a canopy that can be automatically supported when landing.
6. The quota of the life raft must not be less than 6.
7. The total quality of the life raft, the total quality of the items and containers must not exceed 185kg.In addition, it also requires specific requirements for the equipment of the life raft, the installation facilities of the life raft, the strength of the lifting life raft, the dealership, the container of the installation raft, and the free floating drop -off.
storage of qi -jelly -type life rafts
1. The life raft and its storage device should not affect the use of life -saving equipment stored in any other location.
2. In the case of safety and feasibility, as close as possible.In addition to throwing out the life rafts that landed out of the outshore, the life raft should be in this position: that is, the life raft in the landing position, when the full -load Ship is not good for 10 and reaches 20 to any sideWhen the angle of immersion in the edge of the open -air deck of the Ship (from the larger angle of the two), it should be not less than 2 m from the waterline.
3. When the suspended life raft can be used in the state, the two boats should be allowed to complete the login and landing preparations within 5 minutes.
4. It is stored in a safe and shielded place and is protected to avoid damage caused by fire and explosion.Especially the life raft on the oil tanker.It should not be stored above the cargo oil compartment, polluting oil cabin or other explosive or dangerous cargo compartment.
Inspection and maintenance of life rafts
1. Observation inspections of life rafts and their storage and settlement equipment per week to ensure that they are available immediately and make records.
2. Each month, check the rapid decircation, fixing hooks, fixed cables, rope plugs, connecting buckles, and life raft containers on the life raft.It should be repaired immediately so that it is in a good technical state, and it must be recorded.
3. The time interval of the life raft maintenance does not exceed 12 months, and it can be exhibited to 17 months with the consent of the competent authority.
4. The life raft must be maintained at the maintenance station recognized by the competent authority, or the certification personnel approved by the competent authority are inspected on the Ship as required.The main items for maintenance are: the surface quality of the raft (firm paste, damaged, etc.) inspection, inspection of the raft container, inspection of the dissemination of the raft, the presence of the life raft with it, the inspectionCheck, start the punching needle, start the inspection of the rope, and perform an inflatable test and inspection.In short, these inspections should not neglect any small parts, any parts, any part of the loading parts, and any one.Discover all bad situations such as shortage, damage, mildew, etc., must be supplemented, repaired or replaced to maintain its good technical state.
5. Under the general storage and use, the life of the rafts of the life raft is 10-15 years, which exceeds the service life and must be replaced.
6. If the static water pressure releaseer can be replaced on the Ship, there must be a qualified spare parts on the Ship. After the use expires, it should be replaced in time.
7. Static water pressure release device (except for being replaced by itself), the time interval of the maintenance is 12 months; it can be exhibited for 17 months after recognition by the competent authority.
8. The surface of the container of life raft must not be painted. The signs and technical data indicated on the container must be clear and obvious.You cannot be stamped particularly on the container, and you cannot add a fixed incorrectly.
Bloating life raft application method
1. Plug -in life raft
When the Ship is in danger, the raft can be thrown into the sea by manpower or with the help of its own gravity, and rely on the strong rope to pull the inflatable bottle valve to make it inflatable and forming in a very short period of time.
2. Mechanical Hanging
It is mainly used for passenger ships or scientific examination ships and teaching boats.First remove the raft from the storage room room or deck store and hang it on the life raft Hanging rack to pull the inflatable and pull the rope to make it shake on the side of the side.Then it is a climbing platform made by the tape to make the crew and the passenger from boarding the raft from the deck, and then hang the raft to the water.In this way, the occupants avoid difficulty climbing ladder and diving.
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