Some standard content:
Chemical Industry Standard of the People's Republic of China
A, D Rafts
Inflatable Life Rafts
HG2714.1--1995
This standard is equivalent to the International Maritime Organization (IMO) 1971 International Convention for the Safety of Life at Sea (1983/1988 Amendment) "Maritime University Resolution A.68917 (1991) % Life-saving Appliance Test" and ISOO/TR6065 (1991) "Shipbuilding and Ship Structural Materials".
1 Main Contents and Scope of Application
Inflatable Life Rafts,
This standard specifies the product classification, technical requirements, test methods, inspection rules, marking, packaging, transportation and storage of inflatable life rafts.
This standard applies to the throwing inflatable life rafts and the hanging inflatable life rafts used on international ships. Collectively referred to as life rafts. 2 Reference standards
GB/T1690 Test method for liquid resistance of vulcanized rubber GB/T7537 Accelerated aging test for rubber coated fabrics GB/T7539 Standard environment for storage and testing of rubber coated fabrics GI3/T10720 Determination of adhesion strength of coating layer of rubber or plastic coated fabrics GB/T13934 Determination of flex cracking resistance of vulcanized rubber F2324 Test method for special industrial ropes
Determination of tensile strength and elongation at break of rubber or plastic coated fabrics HG/T 2580
Determination of tear resistance of rubber or plastic coated fabrics IIG/T 2581
HG/T 2582
Determination of water penetration resistance of rubber or plastic coated fabrics 3 Terminology
3. 1 Inflated into ils shape The lifeboat is inflated until the buoyancy tire is round and the top basket is erected for use. 3.2 Throw-over inflatable liferaft An automatically inflatable liferaft that is thrown into the water from the side by manpower or by a frame. 3.3 A-type throw-over inflatable liferaft An inflatable liferaft for use on international voyages, referred to as a throw-over liferaft. 3.4 D-type davit-launched inflatable liferaft An inflatable liferaft for use on international voyages that is inflated and launched into the water under full load using approved launching equipment, referred to as a launch liferaft. This raft also has the function of a throw-over inflatable liferaft. Approved by the Ministry of Chemical Industry of the People's Republic of China on May 9, 1995, and implemented on January 1, 1996, 35A The general number of APACK A-type liferaft accessories.
3.6B equipped with BPACK
HG 2714. 11995
The simplified A-lifeboat accessories recommended by the competent authority. 3.7 stowage cylinder
Rigid container for storing lifeboat.
3.8 painter
The cable that connects the ship and the lifeboat net. 3.9 throw-over inflatable operating lineThe cable that can pull the cylinder valve starter. 3.10 capacity load stateThe state of the lifeboat after it is fully loaded with rated passengers and all accessories. 3.11 working pressureThe design pressure at which the lifeboat can still maintain its shape under full load or the design pressure agreed by the supplier and the buyer. 3.12 rated load
The load under full load. 3.13 Portable life-saving hand-jitcraft A life raft that can be moved between rooms. 4 Product classification Inflatable life rafts are classified according to Table 1. Throwable inflatable life rafts Liftable inflatable life rafts 4.2 Model marking regulations XXX-AXX XxX-DXx Crew quota (persons) 6, 10, 13, 20, 25 or other rated number of more than 6 and less than 25 15, 20, 25 Crew quota Trade name 4.3 The schematic diagram of the general type of life raft is shown in Figure 1. The shape of the life raft can be determined based on the negotiation between the supplier and the buyer, and is only subject to the approval of the ship inspection department. 95
IG 2714.11995
Radar reflector 2 tea position light 13 canopy: observation window; 5 canopy door; 6-upper float; 7-lower float; 8 ladder; 9-ballast water bag; 10-inflatable cylinder; 11-bottom; 12-pedal; 13-handle rope + 4-waterproof handle; 15 reflective tape Figure 1
4.4 The schematic diagram of the general type of storage cylinder is shown in Figure 2. Its structural form can be determined by negotiation between the supply and demand parties, but it should be approved by the ship inspection department. 1-upper shell; 2-lower shell; 3-metal buckle; 4-hole level diagram?
5 Technical requirements
5.1 General requirements
5.1..1 Life rafts and lifeboats should be manufactured according to the drawings reviewed and approved by the ship inspection department. 5.1.2 The appearance of the life raft should be balanced and uniform in color. There should be no defects such as debonding, delamination, bubbles, etc. that affect its use. 96
HG 2714.1—1995
5.1.3 The life raft should be stored at an ambient temperature of -30℃~+65℃ without being damaged. 5.1.4 The life raft should be able to be used in the range of -1℃~+30℃: swimming depth. 5.1.5 The total mass of the life raft (including the storage tube) should not exceed the design mass. For a life raft that is required to be portable, the total mass (including the storage tube) should not exceed 185kg.
5.2 Structural and performance requirements
5.2.1 Floating tire
5.2.1.1 The buoyancy of the life raft should be divided into at least one independent air chamber, and each air chamber should be inflated by a one-way inflation valve installed therein. The buoyancy tubes shall be arranged so that when any chamber is damaged or cannot be inflated, the air chamber that has not failed can still support the load in the fully loaded state, and the lifeboat shall still have positive air flow around it. Each buoy shall also be provided with an air supply valve, an air exhaust valve and a safety valve at appropriate positions. 5.2.1.2 The volume of the buoy after inflation (excluding the canopy columns) shall not be less than 0.096m2 for each passenger. 5.2.2 Bottom
5.2.2.1 The lifeboat shall be provided with a watertight bottom of an air sandwich structure, on which facilities for the passengers to inflate and deflate shall be provided. 5.2.2.2 The bottom area of the lifeboat measured from the innermost edge of the buoy when inflated shall not be less than 0.372m2 for each passenger. 5.2.3 Canopy
5.2.3.1 The canopy of the liferaft shall be a sandwich structure forming an air space, and facilities shall be provided to prevent water accumulation in the canopy. 5.2.3.2 The canopy should be automatically propped up during the descent or when the raft reaches the water surface. The propping up time of the canopy should meet the requirements of Article 5.2.8.3.
5.2.3.3 For a lifeboat with a rated passenger number of more than eight people, the canopy should have at least two symmetrically arranged doors; for a lifeboat with a rated passenger number of less than or equal to eight people, one can be provided. Each canopy door should be provided with a closing device that can be effectively adjusted and can be opened easily and quickly from both the inside and outside of the canopy. After the door is closed, it should be sufficiently tight to prevent the intrusion of seawater and cold wind, but can also allow sufficient air for the passengers to breathe. Each canopy door should be clearly marked.
5.2.3.4 At least one lookout window should be provided.
5.2.3.5 There should be facilities for collecting rainwater.
5.2.3.6 There should be sufficient space height for the rated passengers wearing life jackets sitting under the canopy so as not to hinder the operation of various accessories. 5.2.3.7 The outer color of the top seam should be orange-yellow, and the color of the interior should not make the occupants feel uncomfortable: 5.2.4 Climbing facilities
5.2.4.1 The rescue boat should be equipped with a flat and rigid climbing pedal at at least one entrance. The pedal structure should be able to prevent obvious leakage of the buoyancy when it is damaged. For D-type boats with more than one entrance, the climbing pedal should be located at the entrance opposite to the approaching purple (stabilizing rope). 5-2.4.2 The release pressure of the one-way valve of the climbing pedal should be not less than 0 kPa and the closing pressure should be not less than 4-7 kPa. 5.2.4.3 A climbing ladder should be installed at the entrance where there is no climbing pedal, and the lowest step should be located not less than 0.1 m below the lightest waterline of the rescue boat.
5.2.4.4 The rescue boat should be equipped with facilities that can help people get their bodies from the climbing ladder into the boat. 5.2.5 Fittings
5.2.5.1 The outer and inner sides of the rescue rope should be equipped with a chain handle rope with a breaking strength of not less than 2.0kN synthetic fiber woven rope or belt.
5.2.5.2 The life raft should be equipped with an effective fly rope, the length of which should not be less than 2 times the distance from the storage place to the lightest load navigation water line or 15m. Whichever is longer, generally 30m. The breaking strength of the first rope system should not be less than 10.0kN. 5.2.5.3 The life raft should be able to be inflated by one person. 5.2.5.4 The top of the life raft should be equipped with a controllable position indicator light approved by the ship inspection department. It should light up automatically when the life raft is inflated into shape.
5.2.5.5 A controllable lighting lamp approved by the inspection department should be installed inside the life raft, and it should light up automatically when the life raft enters the water and inflates into shape.
5.2.5.6 A reverse reflective tape approved by the ship inspection department should be attached to the position of the life raft to facilitate detection. 9%
HG 2714-1—1995
5.2.5.7 Life rafts shall be provided with devices for installing and fixing radar reflectors and transponders. 5.2.6 Stability and stability
5.2.6.1 The average depth of a life raft with a non-inflated bottom shall not be less than 300 mm when fully loaded. 5.2.6.2 Life rafts shall be provided with ballast water bags, the cross section of which shall be isosceles, and the design of the water bags shall enable them to be filled with about 60% of water within 15 to 25 seconds. The number and total volume of water bags installed in each type of life raft shall comply with the provisions of Table 2. When the life raft is inflated and the canopy is propped up to the highest position and floats on the water, it shall be stable in wind and waves. Table 2
Water number, units
Total runoff.L
220~-250
220~·250
A15 type
D15 type
279~300
A20 type
D20 type
360--100
A25 type
D25 type
450~-500
5.2.6.3 There should be no danger of sinking or capsizing in lifeboats when the rated number of passengers is concentrated at the navigating end or at one end of the lifeboat and when passengers are on board. 5.2.6.4 The lifeboat should be able to be righted by one person in the wind and waves and in calm water when it is in the overturned position. The quick righting should not cause damage to the structure, and the gear bag should be firmly kept in place. 5.2.6.5 The structure of the lifeboat and its accessories should be such that after the lifeboat is fully loaded and one sea anchor is lowered, it can be towed at a speed of 3kn in calm waters for a distance of not less than 1 km. 5.2.7 Strength
5.2.7.1 Each buoyancy chamber of the lifeboat should be able to withstand at least 3 times the operating pressure. After 30 minutes, the pressure drop does not exceed 5%, and there is no joint slippage, rupture or other defects.
5.2.7.2 With the canopy and the trolley propped up, the floating lifeboat should be able to withstand the rated occupant jumping from a height of at least 4.5 meters above the bottom of the boat without fabric tearing or seam damage. 5.2.7.3 The fully packed life raft should be able to withstand being dropped into the water from a height of at least 18m. The raft should automatically inflate and take shape. The raft and its accessories should not affect its use. If the storage height of the life raft is higher than 18m, the life raft should be tested by being dropped from a height. The time of inflating and forming should meet the requirements of 5.2.8.3 and 5.2.8.4. 5.2.7.4 The structure of each life raft should be able to withstand being exposed and floating for 30 days in all sea conditions. 5.2.8 Inflation and airtightness
5.2.8.1 The life raft should be inflated with gas without gas. The gas storage volume should be sufficient to make the life raft reach a certain working pressure, 13.4 kPa for the buoy and the pole, and 2.7 kPa for the bottom of the raft.
Note: If there are other requirements for the working pressure of the life raft, it can be agreed upon by the supplier and the buyer and approved by the ship inspection department. 5.2.8.2 When the lifeboat is inflated at an ambient temperature of 18~20℃, it should be inflated and formed within 1 minute and reach the working pressure. The force used by the pull rope to start the inflation shall not exceed 150N. 5.2.8.3 When the lifeboat is inflated at an ambient temperature of -30℃, it should be inflated and formed within 3 minutes and reach the upper working pressure. The lifeboat should not have joint sliding, cracking or other defects, and should not affect its use. 5.2.8.4 When the lifeboat is inflated at an ambient temperature of 65℃, the safety valve should have sufficient passing capacity to prevent the lifeboat from being damaged due to overpressure, and to prevent the maximum pressure from reaching twice the closing pressure of the safety valve during the inflation process. The lifeboat should not have joint sliding, cracking or other defects.
5.2.8.5 Each air chamber of the lifeboat should have sufficient airtightness: a) The float is inflated to 1.5 times the working pressure. After 30 minutes, the pressure drop shall not exceed 5%, and there shall be no joint movement or rupture. The safety valve shall not work during the test; b) Test the appropriate release and reset pressure of each safety valve. The release pressure is 15.6-17.4 kPa and the reset pressure is 13.4-14.7 kPa.
Note: If there are other requirements for the release and reset pressure of the safety valve, it can be agreed upon by the supply and demand parties and approved by the ship inspection department. r) When each float is inflated to the working pressure, and then continued for 61, after compensating for the changes in temperature and atmospheric pressure, the pressure drop shall not exceed 10%: 88
HG 2714.1 1995
d) The bottom of the lifeboat is inflated to the operating pressure T for "h. Without compensation, the pressure drop shall not be greater than 5%. 5.2.9 Maneuverability
5.2.9.1 A fully-cut lifeboat can be propelled at least 25m in still water by the provided oars. 5.2.9.2 When the lifeboat is fully flooded: it should still be able to bear the rated number of passengers and remain seaworthy without serious deformation of the raft body. 5.2.9.3 A fully flooded lifeboat should withstand 10 waves at a wave height of at least 0.3m. 5.3 Rubber-coated fabrics for lifeboat
The physical properties of the rubber liquid-coated fabrics used to make lifeboat buoys, canopy poles, and lifeboat bottoms (collectively referred to as the main body) should meet the requirements of Table 3. 5. 3-1
Tensile strength/(kN/m)
Batch elongation/%
Item name
Anti-cracking performance/NV (single tongue method)
Appearance (folding test)
Hot air aging performance
(70_1)X168 h
Tensile strength retention rate/%
Size change rate/road
Oil resistance, 1\standard oil, (20—2)℃:%22 hCold resistance
—30Bending 180
-609r:×10miChange 180%
Coating layer adhesion strength/(kx/m)
Flexing resistance 200,000 times
Tensile strength retention rate/%
Air tightness, 152Pa.Room temperature×5 min
Ozone resistance, 50 pphm×30C×1 hSeawater resistance
40℃x4h
Overlap joint adhesion shear test
Not less than
Not less than
Not less than"
Not less than"
Not less than
Not less than
Joint adhesion shear strength test, room temperature (70-1)r:×168hAfter aging5. 3- 2
No stickiness, cracks
and other deterioration
No stickiness and other deterioration
No cracks and other deterioration
No separation between the coating layer and the fabric
Not breathable
No obvious cracks
The coating layer does not separate and does not change color
The fracture surface should not be at the lap joint
The fracture surface should not be at the lap joint
The physical properties of the rubber coated fabric used to make the lifesaving outer chain tent should meet the requirements of Table 4. Table
Item name
Tensile strength/(kV/m）
Tear resistance/N
Hot air decomposition performance
(70±1)C×168 h
Appearance (folding test)
Tensile strength retention rate/part
Cold resistance,—30c×11Bending 180°Coating layer adhesion strength.kN/m
Water permeability resistance, 0. 02 MPaX3 min
Ozone resistance, 50pphrn×30t:×1h not less than
not less than
not less than
not less than
no stickiness, brittleness, cracks and other deterioration phenomenasu
no cracks and other deterioration phenomena
no bursting, water seepage and other deterioration phenomena
no obvious cracks
Test method
HG/T 2580
HG/T 2580
FIG/T2581
Appendix A
Appendix B
GB/T 10720
GB/T19934
Hi/T 2580
Appendix D
Appendix E
Appendix F
Appendix G
Test methods
HG/T 2580
HG/T 2581
Appendix A
GB/T 1072C
HG/T 2582
Appendix E
5.3.3 The rubber-coated fabrics used for the manufacture of lifeboat buoys, pillars, bottoms and outer tents shall not have defects in appearance that may affect the airtightness and water-proof performance of lifeboats, such as mechanical damage, dead folds, bubbles, hard impurities, etc. 5.4 Accessories
The accessories of life-saving equipment shall comply with the provisions of Table 5. 5.4.1
Type A life-saving equipment and Type D life-saving equipment
First aid kit
Rocket parachute
Flame signal
Supporting flame signal
Floating smoke signal
Flashlight
Floating water flap
Opening force
Radar reflector|| |tt||Daylight signal mirror
Fishing tackle
Thermal insulation
Stainless drinking water cup
Cleaning bag
Health tips
Inflator
Floating life ring
Repair tool bag
Dizziness pills
Emergency action instructions
Instruction manual
Portions/person
Liters/person|| tt||piece/person
piece/person
equipment
A equipment
B equipment
It is a waterproof box that can be closed tightly after use, and contains medicines approved by the ship inspection department2
Must be approved by the inspection department and should be installed in a waterproof outer shellNeck wire approved by the inspection department and should be installed in a waterproof outer shellMust be approved by the ship inspection department and should be installed in a waterproof outer shell The rations shall not be less than 1OMJ. They shall be packed in non-toxic airtight water-tight containers approved by the ship inspection department. The rations shall be stored in stainless steel and watertight containers. The rations shall be waterproof flashlights suitable for Morse communication, with spare batteries and spare light bulbs, which shall be placed in the same waterproof container. For less than 13 persons, one shall be provided. For 13 persons or more, one shall be provided. The rations shall be buoyant. One shall be approved by the ship inspection department and tied to the ship. Only the equivalent inquiry equipment of Sichuan warships shall be equipped, and it shall be approved by the ship inspection department. If a transponder is installed, it may not be installed. It shall be approved by the ship inspection department and the ship shall be owned by the ship. The aircraft communication shall be sufficient to provide 10% of the rated passengers, whichever is greater. A letter diagram shall be provided. 30 pieces of equipment shall be equipped. For a minimum of 13 passengers, one buoyant non-folding knife shall be provided. If the number of passengers is 13 or more, one non-folding knife shall be added. Instructions for use and tools shall be attached. The equipment items 1 to 21 in item 5 shall be installed in a watertight container with sufficient buoyancy, and the container shall be fastened inside. Items 22 to 21 of the life raft should be fastened to a convenient fixed position in the raft, and items 25 to 28 of the life raft should be placed in a conspicuous place in the raft. 5.5 Storage cylinders should be approved by the ship inspection department and durable in all sea conditions. They should be as watertight as practical, except for the drainage holes at the bottom of the container. They should have sufficient natural buoyancy so that when the life raft and its accessories are installed, the inflation cable can be pulled from the inside and the inflation device can be pulled if the ship sinks. The life raft should be packed in its container in a way that it is in a floating position as far as possible. 5.6 Additional requirements for D-type rafts
In addition to meeting the requirements of 5.1 to 5.5, D-type rafts shall also meet the following conditions: 5.6.1 The suspended raft shall be able to withstand repeated boarding by passengers, without excessive deformation when carrying the rated number of passengers, and can be safely lowered using lifting equipment without damage to the service body.
5.6.2 After being fully loaded with the rated load, it shall be able to withstand the horizontal collision force with the ship at a speed of at least 3.5m/s, and fall into the water from a height of not less than 3tr, without any damage that affects its performance. 5.6.3 When the ambient temperature and the stable rescue temperature are 20±3°C and all safety trees are not used, the suspended raft shall be able to withstand 4 times the rated load.
5.6.4 When the ambient temperature and the stable temperature of the life raft are 30°C and all safety valves are available, the suspended raft should be able to withstand 1.1 times the rated load.
5.6.5 Under normal conditions, each new D-type raft should be able to satisfactorily withstand a 10° overload test without damage to the raft body and its accessories. The safety valve in the suspension should maintain the normal working pressure of the buoy and its basic shape. Note! 1C% overload is 20% of the total load of the raft together with its components and each person with a rated load of 75 kg. 5.6.6I) Type rafts should be equipped with lifting rope assemblies and climbing devices. 5.6.7 The combined strength of the webbing or rope used for lifting the lifting cable assembly and the connecting parts to the object shall not be less than 6 times the mass of the liferaft carrying the additional load.
5.6.8 The storage container shall be fastened to prevent the container or component from falling into the sea during the inflation and launching of the liferaft and afterwards.
6 Test method
6.1 Inspection of main dimensions
Put the liferaft body on the semi-flat ground, inflate to the working pressure (including the bottom), measure the outer dimensions of the body by projection method, use external card and straight line, and measure the straight line and weight of the buoyancy, use tape measure to measure the body diameter, raft bottom area, body height. And calculate the per capita occupied area and occupied area of the chain.
The precision error of the tape measure and ruler for dimension measurement shall not exceed 0.1cm. The diameter of the float is measured with an external card and a large triangle ruler. 6.2 Appearance inspection
Inflate the life raft to the working pressure, and then check the appearance of the raft using the daily measurement method. 6.3 Quality inspection
Weigh the fully packed life raft on a 500kg scale with a minimum scale of 200g. If the weight of the portable life raft exceeds 185kg, the accessory package or the container of different combinations should be weighed and checked to ensure that the weight of the portable life raft does not exceed 185kg. 6.4 Damage test
Inflate the life raft to the working pressure, and then release the air valve of any float. After the air pressure is exhausted, float the raft to the water surface, and let the rated passengers with an average mass of 75kg sit evenly in the raft. Two more people go into the water to measure the value of the raft at this time. Each measurement should be from the water level to the lowest point of the four points in front, back, left and right of the top of the highest float. 6.5 Roof Sealing Test
After the lifeboat is inflated and formed, close all inlets for water test. Pass a 63.5mm hose through a place 3.5m away from the buoy and 1.5m high, connect it to a flow meter and flush water at a flow rate of about 2300L/min towards each inlet and its surroundings for 5 minutes to check whether there is significant water accumulation in the roof interlayer and the lifeboat.
6. 6 Riding test
HG 2714- 1--1995
The rated passengers with an average mass of 75kg wearing life jackets board the lifeboat (including the bottom of the raft) that has been inflated to the working pressure and sit down. At this time, all the passengers in the raft have sufficient time to observe and measure the headroom and energy consumption. 6-7 Loading test
After the lifeboat is inflated, it floats in still water (the bottom of the raft is not inflated). Two people go into the water and use a ruler and two angle plates to measure the dry value of the lifeboat when it is empty (including accessories but no passengers) at any four points around it. Then, the rated passengers with an average mass of 75kg wearing life jackets board the lifeboat and sit in the raft, so that the draft of the raft is equal at the front and rear. The two people above measure the dry value of the full load at the original four points. 6.8 Ballast water bag test
Put a water bag under a special float, mark the 60% volume of the water bag, immerse the float in water, and record the time. Observe the formation and expansion of the water bag in the water, and record the time when the water fills 60% of the water bag volume. 6.9 Boarding test
Four adults who are not good at swimming and have different weights should be invited to form a group with the approval of the ship inspection department. They should wear shirts and trousers or overalls and approved life jackets. Each person should swim 100 meters first, and then try to board the lifeboat without rest. Observe whether they can board the lifeboat without the help of others. If two of them have boarded the lifeboat independently, the fourth person can be allowed to board with the help of other people, and then check whether the boarding ladder and the boarding platform are damaged or leaking. The water depth should be enough to prevent any outside help when boarding the lifeboat. 6.10 Stability test
6.10.1 Inflate the life raft to the point where it floats on the water surface and is fully loaded. When the rated passengers of the life raft are concentrated on the first and second ends, measure the pressure of the points around the raft in the two situations to test whether the life raft is in danger of drowning. Each downward measurement should be measured from the waterline to the lowest point on the top surface of the highest layer of the raft. 6.10.2 Have two people wearing approved life jackets board the empty raft, and take the second person who pretends to be unconscious and faces the entrance from the water. The person who cannot hold the two rescuers on the raft should rescue the person and test whether the life raft is in danger of flipping over to prove whether the raft can resist the overturning moment.
6.11 Re-righting test
6.11.1 Inflate the life raft to the minimum working pressure, install the heaviest equipment package, open the hole for all people on the canopy, turn the life raft over and put it into the water, and keep the raft in the overturned state for at least 10 seconds. 6.11.2 The recovery shall be carried out by the same group of persons as required for the boarding test after they have been prepared. They shall be dressed in the same way and wear approved life jackets. At least one of the recovering persons shall have a mass of less than 75k. Each person shall independently try to recover the life raft. The water depth shall be sufficient to prevent any external assistance when the swimmers board the inverted life raft. 6.11.3 During the recovery, the recovering person shall step on the side of the cylinder, pull the recovering belt with both hands, face the wind direction, and independently pull the raft out of the inverted state. 6-11.4 Finally, check whether the raft is damaged and whether the gear bag is firmly in place. 6.12 Towing test
In calm water, inflate the life raft to the following pressure: 1. Place sand bags or water bags in the life raft according to the required mass of the raft, and make the raft bow slightly tilted. Connect the raft bow cable to the towing motor boat firmly. The motor boat shall gradually accelerate to tow the life raft at a speed of not less than 3kn. The towing distance shall be not less than 1. kim, a sea anchor should be lowered when towing. At the end of the test, the raft will be landed, and the body and accessories will be checked for damage, and whether the sea anchor is still coiled. 6.13 Pressure test
Connect a pressure gauge with a range of 0.01.MPa and a minimum range of 0.005MPa to the life raft buoy. Block the safety valve. Inflate the raft buoy with compressed air to 3 times the working pressure, and remove the inflation source. After stabilizing the pressure, continue for 30 minutes without temperature and air pressure compensation. Record the residual pressure, calculate the pressure drop rate, and check whether the connection parts of the life raft buoy have slippage, rupture or other defects. 6.14 Jump boarding test
6.14.1 For life rafts that have been erected or have not yet erected the top basket - have one person jump from the bottom of the raft 1.5 meters at least. m high and then jump onto the train to check for damage. The weight of the test subject shall not be less than 75 kg and the test subject shall wear 1. flat-heeled hard-soled shoes without spikes. The number of jumps shall be equal to the total number of passengers approved for the train.
HG 2714. 1 --1995
6.14.2 A suitable and equivalent mass can be dropped for simulated boarding test. Inflate the lifeboat to the upper operating pressure. Place the launching frame above the raft, hang the sandbag on the hook of the launching frame, and make the sandbag at least 4.5m above the bottom of the lifeboat. During the test, control the position of the lifeboat, push the sandbag to the door of the lifeboat, pull the hook, and the sandbag will be separated from the hook and dropped into the lifeboat from the body. The number of people dropped is equal to the rated number of passengers of the lifeboat. Check whether the lifeboat is damaged. 6.15 Drop test
Place the fully packed lifeboat on the launching frame 18m above the water surface, fasten the raft end to the main hanging point, release the lifeboat, and drop it into the water by falling body. Determine the time when the raft body is fully inflated and the top is supported, and observe whether the position indicator light and lighting lamp on the lifeboat are on. Put the lifeboat on the shore and visually check whether the working efficiency of the lifeboat, raft shell and accessories are damaged. 6.16 Mooring test
Inflate the liferaft to full working pressure, load the liferaft with sandbags equal to the total mass of its rated occupants and its belongings, moor the raft at a place on the sea or in a seawater port, measure the pressure of each air chamber every morning and evening, record the time, climate, temperature and pressure of each air chamber. If there is leakage, it can be supplemented once a day with an inflator, but the liferaft should be kept in shape within any 24 hours. After anchoring for 30 minutes, unload the load, land the life raft, visually inspect the appearance of the raft, check whether there is any damage that may impair its performance, and perform pressure test according to 6.13. 6.17 Inflation test
6.17.1 Normal temperature inflation
At an ambient temperature of 1820C, pull out a section of the inflation cable of the fully packaged life raft and connect it to a 1000N spring scale. Start timing with a stopwatch when the inflation cable is pulled out on the ground and the cylinder valve is activated. When the cylinder is inflated, record the time and tension, and measure the appearance of the life raft:
6.17.2 Low inflation
Take two! Connect a pressure gauge with a range of 40kPa and a minimum range of 1kPa to each buoy exhaust valve of the raft, then assemble the raft completely and place it at room temperature for at least 24 hours. Then place it in a low-pressure chamber at a temperature of 30 + 2°C and record the time. After 24 hours at this temperature, pull out the inflatable case. Start with a stopwatch and count 1-2 seconds from the time the gas cylinder is started until the upper and lower buoys reach the working pressure. Record the time and pressure respectively, and measure the appearance of the life-saving raft to see if there are any joint slippage, rupture or other defects, to determine whether it can be used immediately after the test. 6.17.3 High temperature inflation
Take two life rafts and connect a pressure gauge with a range of 100kPa and a minimum release of 5kPa at the exhaust valve of each buoy. Then place the fully packaged raft at room temperature for at least 21 hours. Put the raft in a high temperature environment and raise the temperature to 652℃ for 7 hours. Pull out the inflation rope and record the time and pressure when the buoys are inflated and formed and when the buoys reach the maximum pressure respectively. Check the following contents: a) Whether the safety valve has sufficient exhaust to prevent damage to the life raft due to overpressure; h) Determine whether the maximum pressure during inflation is lower than 2 times the closing pressure of the safety valve; b) Measure whether the raft has any joint slippage, rupture or other defects. 6.18 Airtightness inspection
6.18.1 Connect each air chamber with a pressure gauge with a range of 10kPa and a minimum range of [kPa] or a blood pressure gauge with a range of 40kPa and a minimum range of 0.25kP. In the case that the safety valve does not work, inflate to 1.3 times of the working pressure and after stabilization, start calculating the initial time of the test card, record the time, room temperature, and inflation pressure. After parking for 30 minutes, immediately record the time, room leakage and residual pressure, and check whether the lap joint has slipped and calculate the pressure drop rate. Then open the safety valve and record the reset pressure, then fill with compressed air and record its release pressure. 6.18.2 The range of each air chamber of the lifesaving device is 40kPa. The minimum range is! kPa pressure gauge, or a blood pressure gauge with a range of 40kPa and a minimum range of 0.kFa. Connect compressed air to each air chamber of the lifeboat and inflate to the working pressure. Wait for 30 minutes to stabilize, adjust the pressure to the working pressure, and record the time, temperature and pressure. Record the time, temperature and pressure again at the bottom of the lifeboat. Temperature compensation requirements: The temperature change during the test shall not exceed 3°C. For every 1°C increase or decrease in the overflow, the pressure shall be reduced or increased by 0.4kPa accordingly. 6.18.3 Open the exhaust of the landing pedal 1. to discharge the pressure of the buoy to 5.3kPa. Park for 15 minutes, and the residual pressure shall not be lower than 4.7kPa. Then inflate the lower buoy and record the release pressure of the one-way valve. 6.18.4 Use compressed air to inflate the bottom of the raft to the upper working pressure. After the pressure stabilizes, start calculating the time. After 1h, measure the residual pressure. 103
6.19 Maneuverability and flooding test
HG 2714.11995
6.19.1 Inflate the lifeboat to T. positive force, float on the water surface, board the rated passengers, and have two passengers stand by the tent door and use the oars equipped in the boat to push the boat. Check whether the boat can be pushed at least 25m. 6.19.2 Inflate the boat body to the working pressure, load all accessories, fill the boat with water, then the rated passengers board the lifeboat and sit in the hook, and two passengers are located at the front and rear tent doors, use the oars equipped in the boat to push the boat forward, and observe whether the boat is seriously deformed. 6.19.3 Inflate the raft body to the working pressure, load all spare parts and rated passengers, fill it with water, the raft should be able to withstand the impact of 10 waves at least 0.3m high, and visually inspect whether the raft is seriously deformed. Note: Waves can be generated by the wake of the boat or other methods. 6.20 Rope test
6.20.1 Breaking strength test
Perform according to F7.324.
6.20.2 Dimension inspection
The length is measured with a steel tape measure; the width of the belt and the diameter of the rope are measured with a caliper. 6.21 Physical property test of rubber coated fabric for lifeboat 6.21.1 The tensile strength of rubber coated fabric for lifeboat main body and outer tent is measured according to HG/T2580. 6.21.2 The tear elongation of rubber coated fabric for lifeboat main body is measured according to HG/T2580, 6.21.3 The tear resistance of rubber coated fabric for liferaft main body and outer tent is measured according to HG/T2581 6.21-4 The hot air aging performance of rubber coated fabric for liferaft main body and outer tent is measured according to Appendix A. 6.21.5 The oil resistance of rubber coated fabric for lifeboat main body is measured according to Appendix B 6.21.6 The cold resistance of rubber coated fabric for lifeboat main body and outer tent is measured according to Appendix C. 6.21.7 The coating adhesion strength of the rubber coated fabric for the main body and outer tent of the liferaft shall be determined in accordance with GB/T10720. 6.21.8 The flexural resistance of the rubber coated fabric for the main body of the liferaft shall be determined in accordance with GB/T13934. 6.21.9 The air tightness of the rubber coated fabric for the main body of the liferaft shall be determined in accordance with Appendix D. 6.21.10 The ozone resistance of the rubber coated fabric for the main body and outer tent of the liferaft shall be determined in accordance with Appendix E. 6.21.11 The seawater resistance of the rubber coated fabric for the main body of the liferaft shall be determined in accordance with Appendix F. 6.21.12 The seam adhesion shear strength of the rubber coated fabric for the main body of the liferaft shall be determined in accordance with Appendix G. 6.21.13 The water permeability resistance of the rubber coated fabric for the outer tent of the liferaft shall be determined in accordance with HG/T2582. 6.21.14 The appearance quality of the rubber coated fabric for the main body and outer tent of the liferaft shall be determined by visual inspection. 6.22 Buoyancy test of equipment package
Put the complete equipment package in the water tank. After 30 minutes, check whether it is still floating on the water surface. Then wipe off the water outside the package and open the equipment package. Check whether the equipment is damaged and record it. 6.23 Buoyancy test of free-floating life raft Put the complete life raft into the water and let it float freely on the water surface for 30 minutes. Then pull out the inflatable cable downwards to see whether the life raft has sufficient buoyancy. Start the gas cylinder valve to inflate the life raft and check whether it is damaged. The quality of the equipment and spare parts packed in the raft should reach the maximum packaging quality. 6.24 Additional test of D-type chain
6.24.1 Boarding test
Except as per 6.! The boarding test specified in Article 27 shall also be subject to the following test: the inflated lifeboat is hoisted by the hoisting equipment, the stabilizing ropes at both ends are tightened and leaned against the ship or simulated ship, and the rated passengers with an average mass of 7kg are boarded to observe whether the lifeboat has excessive deformation, and then the stabilizing ropes are loosened, and the starting time is recorded. After 5 minutes, the lifeboat is lowered to the sea surface or the ground and the load is unloaded to check the deformation and damage of the raft. This test is required to be carried out at least three times in a row, so that the distance between the hook of the hoisting equipment and the side of the ship are: a) half of the maximum width of the lifeboat plus 150mm: 101
b) half of the maximum width of the lifeboat,
IIG 2714. T—1995
c) half of the maximum width of the lifeboat minus 150mm. 6.24.2 Impact test
Load the life-saving raft with sandbags equal to the rated mass of the passengers and accessories, suspend it, and use cables or wire ropes to pull the raft horizontally so that the raft is 0.62 inches high in the vertical direction. Then release the life-saving raft (at this time, it is equivalent to a speed of 3.5 m/s) to hit a rigid vertical plane. After the test, check whether the raft has any damage that affects its effectiveness. 6.24.3 Fall test
Connect the life-saving raft to the assembly specified in Article 6.21.2 and connect it to the lifting equipment (such as a lifting frame) equipped with a release device through a shackle. Lift the raft 3m above the water surface, open the release device, let the raft fall into the water, remove the load, and check whether the raft has any damage that affects its use. 6.24.4 Overload suspension test
Each air chamber is connected to a pressure gauge with a range of 40 kPa and a minimum range of 1 kPa. The lifeboat is placed at a temperature of 20-3℃ for 6 hours. At this temperature, the lifeboat is lifted by its lifting rope: each chamber is inflated to the working pressure (excluding the bottom of the lifeboat). All safety valves are closed, and then the lifeboat is lowered. A uniform mass of 4 times the rated mass of the passengers and accessories is installed, with a mass of 7 kg per person. The lifeboat is lifted off the ground and lifted for 5 minutes.
Record the pressure before and after the test, the pressure during suspension, and the pressure after the weight is removed. Record the displacement, deformation, and damage of the lifeboat's external dimensions before and after suspension. During and after the test, check whether the lifeboat remains suitable for its specified purpose (no water dripping from the bottom of the lifeboat, no damage to the buckles, etc.). 6.24.5 Low temperature lifting test
The lifeboat is parked in a freezer at a temperature of -30°C for 61°C. With all safety valves functioning, inflate the raft to the operating pressure (excluding the bottom). At this temperature, load 1.1 times the rated number of passengers and belongings, and suspend the raft by the shackles at least 5 meters above the ground. min, observe the deformation of the body, unload the load, and observe whether the life raft is suitable for the specified purpose during and after the test. If the life raft must be removed from the refrigerated air for hanging, it should be hoisted immediately after being removed from the room. 6.24.61. Normal temperature hoisting test
At normal temperature, connect the pressure gauges to the air chambers of the life raft. With all the safety valves working, inflate the raft with compressed air and stabilize it to the working pressure (the bottom of the raft is not inflated). Load the raft with 10 kg of overloaded sand evenly distributed inside the raft, and hoist the raft off the ground through the shackles. Suspend it for 5 minutes. min, the safety valve of the suspended buoy should maintain the normal working pressure of the buoy and its basic state, unload the load, and check whether the connecting components are damaged.
6.24.7 Simulated landing test
In the case that all safety valves are in effect, the rescue device (except the bottom of the buoy) is inflated to allow the working pressure to be increased to the inside, and its total mass is equal to the mass of the most sub-bags and the rated occupants (sandbags can be used as a substitute), and the buoy is suspended on a slope representing 20° of unfavorable heel, and slides continuously for at least 4.511. Unload the load and check whether the buoy body is damaged The phenomenon of broken shape or unsuitability for specified use. 7 Inspection rules
7.1 The life-saving rafts shall be inspected by the quality inspection department of the manufacturer. Only after they are qualified can they be submitted for acceptance. 7.2 Life-saving rafts must be submitted for inspection in batches. The inspection is divided into factory inspection and type inspection. 7.3 Factory inspection
7.3.1 The batch-produced life-saving rafts shall be inspected. 7.3.2 The monthly production of the model of life-saving rafts shall not exceed 100 pieces. The inspection items and numbers are shown in Table 6. Table 6
Inspection items
Tightness! In addition to the boarding test specified in Article 2, the following test shall be conducted: the inflated lifeboat is hoisted by the hoisting equipment, the stabilizing ropes at both ends are tightened and leaned against the ship or simulated ship, and the rated passengers with an average mass of 7kg are boarded to observe whether the lifeboat has excessive deformation, then the stabilizing ropes are loosened, and the starting time is recorded. After 5 minutes, the lifeboat is lowered to the sea surface or the ground and the load is unloaded to check the deformation and damage of the raft. This test requires at least three consecutive times, so that the hook of the hoisting equipment is at the following distances from the ship's side: a) half of the maximum width of the lifeboat plus 150mm: 101
b) half of the maximum width of the lifeboat,
IIG 2714. T—1995
c) half of the maximum width of the lifeboat minus 150mm. 6.24.2 Impact test
Load the life-saving raft with sandbags equal to the rated mass of the passengers and accessories, suspend it, and use cables or wire ropes to pull the raft horizontally so that the raft is 0.62 inches high in the vertical direction. Then release the life-saving raft (at this time, it is equivalent to a speed of 3.5 m/s) to hit a rigid vertical plane. After the test, check whether the raft has any damage that affects its effectiveness. 6.24.3 Fall test
Connect the life-saving raft to the assembly specified in Article 6.21.2 and connect it to the lifting equipment (such as a lifting frame) equipped with a release device through a shackle. Lift the raft 3m above the water surface, open the release device, let the raft fall into the water, remove the load, and check whether the raft has any damage that affects its use. 6.24.4 Overload suspension test
Each air chamber is connected to a pressure gauge with a range of 40 kPa and a minimum range of 1 kPa. The lifeboat is placed at a temperature of 20-3℃ for 6 hours. At this temperature, the lifeboat is lifted by its lifting rope: each chamber is inflated to the working pressure (excluding the bottom of the lifeboat). All safety valves are closed, and then the lifeboat is lowered. A uniform mass of 4 times the rated mass of the passengers and accessories is installed, with a mass of 7 kg per person. The lifeboat is lifted off the ground and lifted for 5 minutes.
Record the pressure before and after the test, the pressure during suspension, and the pressure after the weight is removed. Record the displacement, deformation, and damage of the lifeboat's external dimensions before and after suspension. During and after the test, check whether the lifeboat remains suitable for its specified purpose (no water dripping from the bottom of the lifeboat, no damage to the buckles, etc.). 6.24.5 Low temperature lifting test
The lifeboat is parked in a freezer at a temperature of -30°C for 61°C. With all safety valves functioning, inflate the raft to the operating pressure (excluding the bottom). At this temperature, load 1.1 times the rated number of passengers and belongings, and suspend the raft from the ground by means of the shackles for not less than 5 min, observe the deformation of the body, unload the load, and observe whether the life raft is suitable for the specified purpose during and after the test. If the life raft must be removed from the refrigerated air for hanging, it should be hoisted immediately after being removed from the room. 6.24.61. Normal temperature hoisting test
At normal temperature, connect the pressure gauges to the air chambers of the life raft. With all the safety valves working, inflate the raft with compressed air and stabilize it to the working pressure (the bottom of the raft is not inflated). Load the raft with 10 kg of overloaded sand evenly distributed inside the raft, and hoist the raft off the ground through the shackles. Suspend it for 5 minutes. min, the safety valve of the suspended buoy should maintain the normal working pressure of the buoy and its basic state, unload the load, and check whether the connecting components are damaged.
6.24.7 Simulated landing test
In the case of all safety valves working, the rescue device (except the bottom of the buoy) is inflated to allow the working pressure to be increased to the inside, and its total mass is equal to the mass of the most sub-bags and the rated occupants (sandbags can be used as a substitute). The buoy will slide continuously for at least 4.5 minutes on a slope representing 20° of unfavorable heel of the wreck. Unload the load and check whether the buoy body is damaged The phenomenon of broken shape or unsuitability for specified use. 7 Inspection rules
7.1 The life-saving rafts shall be inspected by the quality inspection department of the manufacturer. Only after they are qualified can they be submitted for acceptance. 7.2 Life-saving rafts must be submitted for inspection in batches. The inspection is divided into factory inspection and type inspection. 7.3 Factory inspection
7.3.1 Factory inspection shall be carried out on the batch-produced life-saving rafts. 7.3.2 The monthly production of life-saving rafts of a certain model shall not exceed 100 pieces. The inspection items and numbers are shown in Table 6. Table 6
Inspection items
Tightness! In addition to the boarding test specified in Article 2, the following test shall be conducted: the inflated lifeboat is hoisted by the hoisting equipment, the stabilizing ropes at both ends are tightened and leaned against the ship or simulated ship, and the rated passengers with an average mass of 7kg are boarded to observe whether the lifeboat has excessive deformation, then the stabilizing ropes are loosened, and the starting time is recorded. After 5 minutes, the lifeboat is lowered to the sea surface or the ground and the load is unloaded to check the deformation and damage of the raft. This test requires at least three consecutive times, so that the hook of the hoisting equipment is at the following distances from the ship's side: a) half of the maximum width of the lifeboat plus 150mm: 101
b) half of the maximum width of the lifeboat,
IIG 2714. T—1995
c) half of the maximum width of the lifeboat minus 150mm. 6.24.2 Impact test
Load the life-saving raft with sandbags equal to the rated mass of the passengers and accessories, suspend it, and use cables or wire ropes to pull the raft horizontally so that the raft is 0.62 inches high in the vertical direction. Then release the life-saving raft (at this time, it is equivalent to a speed of 3.5 m/s) to hit a rigid vertical plane. After the test, check whether the raft has any damage that affects its effectiveness. 6.24.3 Fall test
Connect the life-saving raft to the assembly specified in Article 6.21.2 and connect it to the lifting equipment (such as a lifting frame) equipped with a release device through a shackle. Lift the raft 3m above the water surface, open the release device, let the raft fall into the water, remove the load, and check whether the raft has any damage that affects its use. 6.24.4 Overload suspension test
Each air chamber is connected to a pressure gauge with a range of 40 kPa and a minimum range of 1 kPa. The lifeboat is placed at a temperature of 20-3℃ for 6 hours. At this temperature, the lifeboat is lifted by its lifting rope: each chamber is inflated to the working pressure (excluding the bottom of the lifeboat). All safety valves are closed, and then the lifeboat is lowered. A uniform mass of 4 times the rated mass of the passengers and accessories is installed, with a mass of 7 kg per person. The lifeboat is lifted off the ground and lifted for 5 minutes.
Record the pressure before and after the test, the pressure during suspension, and the pressure after the weight is removed. Record the displacement, deformation, and damage of the lifeboat's external dimensions before and after suspension. During and after the test, check whether the lifeboat remains suitable for its specified purpose (no water dripping from the bottom of the lifeboat, no damage to the buckles, etc.). 6.24.5 Low temperature lifting test
The lifeboat is parked in a freezer at a temperature of -30°C for 61°C. With all safety valves functioning, inflate the raft to the operating pressure (excluding the bottom). At this temperature, load 1.1 times the rated number of passengers and belongings, and suspend the raft from the ground by means of the shackles for not less than 5 min, observe the deformation of the body, unload the load, and observe whether the life raft is suitable for the specified purpose during and after the test. If the life raft must be removed from the refrigerated air for hanging, it should be hoisted immediately after being removed from the room. 6.24.61. Normal temperature hoisting test Www.bzxZ.net
At normal temperature, connect the pressure gauges to the air chambers of the life raft. With all the safety valves working, inflate the raft with compressed air and stabilize it to the working pressure (the bottom of the raft is not inflated). Load the raft with 10 kg of overloaded sand evenly distributed inside the raft, and hoist the raft off the ground through the shackles. Suspend it for 5 minutes. min, the safety valve of the suspended buoy should maintain the normal working pressure of the buoy and its basic state, unload the load, and check whether the connecting components are damaged.
6.24.7 Simulated landing test
In the case of all safety valves working, the rescue device (except the bottom of the buoy) is inflated to allow the working pressure to be increased to the inside, and its total mass is equal to the mass of the most sub-bags and the rated occupants (sandbags can be used as a substitute). The buoy will slide continuously for at least 4.5 minutes on a slope representing 20° of unfavorable heel of the wreck. Unload the load and check whether the buoy body is damaged The phenomenon of broken shape or unsuitability for specified use. 7 Inspection rules
7.1 The life-saving rafts shall be inspected by the quality inspection department of the manufacturer. Only after they are qualified can they be submitted for acceptance. 7.2 Life-saving rafts must be submitted for inspection in batches. The inspection is divided into factory inspection and type inspection. 7.3 Factory inspection
7.3.1 Factory inspection shall be carried out on the batch-produced life-saving rafts. 7.3.2 The monthly production of the model of life-saving rafts shall not exceed 100 pieces. The inspection items and numbers are shown in Table 6. Table 6
Inspection items
Tightness
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