This standard specifies the model, basic parameters, technical requirements and testing rules of self-igniting floating lights for lifebuoys. This standard applies to self-igniting floating lights for lifebuoys, which are powered by dry batteries or water-activated batteries. The floating lights are used to indicate the location of lifebuoys at sea to people who fall into the water and rescuers at night. Its performance complies with the provisions of my country's "Specifications for Signal Equipment of Seagoing Vessels" and the 1983 Amendment to the 1974 International Convention for the Safety of Life at Sea adopted by the International Maritime Organization. GB 4541-1991 Self-igniting floating lights for lifebuoys GB4541-1991 Standard download decompression password: www.bzxz.net

National Standard of the People's Republic of China
Self-igniting light for lifebuoys
Self-igniting light for lifebuoysSubject content and scope of application
GB 45 41 - 91
Replaces GB4541--84www.bzxz.net
This standard specifies the model, basic parameters, technical requirements and testing rules of self-igniting light for lifebuoys. This standard applies to self-igniting light for lifebuoys, which is powered by dry batteries or water-activated batteries. The light is used to indicate the position of the lifebuoy at sea to the drowning personnel and rescuers of the ship at night. Its performance complies with the provisions of my country's "Specifications for Signal Equipment of Seagoing Vessels" and the 1983 Amendment to the 1974 International Convention for the Safety of Life at Sea adopted by the International Maritime Organization. 2 Reference standards
GB3107.1 General technical conditions for marine pyrotechnic signals 3 Product classification
3.1 Type and size
The self-igniting floating light for lifebuoy is an automatically activated floating luminous signal. Its main components include: floating light body;
lamp holder, bulb and lampshade;
power switch;
bracket;
tether;
power source.
The outer diameter of the self-igniting floating light for lifebuoy should not be greater than 110mm, the total height should not be greater than 450mm, and the total mass including the battery pack should not be greater than 1000g.
3.2 Marking example
The light intensity should not be less than 2cd and should work continuously for at least 2 hours. The mark of the self-igniting floating light (QD) for life buoy is: QD2-2 GB 4541-91
4 Technical requirements
4.1 The manufacture of the self-igniting floating light for life buoy shall comply with the technical requirements of GB3107.14.2 This product can repeat 10 cycles at an ambient temperature of -30 to +65°C and work normally in seawater at a temperature of -1 to +30°C.
4.3 This product can emit light normally when dropped into the water from a height of 30m. 4.4 After the floating light emits light for 1h, it can continue to emit light for at least 1h after being immersed in water at a depth of 1m for 1min. 4.5 This product can withstand the salt spray test of 20% NaCI solution. 4.6 This product can be immersed in water at a depth of 300mm horizontally for 24h without leakage and can work normally. Approved by the State Administration of Technical Supervision on May 22, 1991558
Implementation on March 1, 1992
GB 4541-91
4.7 This product is attached to a life buoy and floats vertically and in balance on the water surface, and can emit light automatically. The center of the light source is not less than 50mm from the water surface. 4.8 When this product is working normally, its luminous intensity is not less than 2cd, and the continuous working time is at least 2h. 4.9 The light of this product can emit light continuously or intermittently, and the flash frequency of intermittent light is not less than 50-60 times/min. 4.10 The lamp body of this product is made of engineering plastics or equivalent materials. 4.11 The bulb of this product should be made of colorless transparent glass, and should not have defects that impair its performance. Its luminous performance should be maintained after 3 years of storage.
The lampshade shall be made of colorless and transparent material. Intermittent light shall not be formed by focusing, and shall not have bubbles or defects that reduce the luminous flux. 4.12
4.13 The lamp is cooled to -18℃, and the lampshade is dropped from a height of 1m to a firmly fixed steel plate or concrete floor twice with the lampshade facing the ground. The lampshade shall not be broken or cracked.
4.14 The self-igniting lamp is placed on a solid surface on its side, and a steel ball with a mass of 500g is dropped from a height of 1.3m to the near center of the lamp housing and about 12mm from one end of the lamp housing, and about 12mm from the other end. The lamp housing shall not be broken or cracked, or deformed to the extent that its water tightness is affected.
4.15 The power supply of this product is dry battery or water-activated battery, etc., which is continuously powered at a constant voltage within 2 hours. 4.16 When the floating lamp is separated from the installation position, it should be able to automatically connect to the power supply and the bulb should emit light normally. 4.17 The eyelet and the tie rope of this product should be able to withstand a tensile force of not less than 225N, and the length of the tie rope should not be less than 1.2m. 4.18 The lamp holder of this product can be fixed on the ship's glazing or railing, and can support the floating light. It can withstand the vibration of the ship and will not loosen. The gravity of the lifebuoy can pull the floating light out during use. The lamp holder should be rust-proof and corrosion-resistant and should have a certain rigidity. 5 Test methods
5.1 The test methods of this product shall comply with the performance requirements of Chapter 5 of GB3107.1. 5.2 The strength test of the lamp shall comply with the requirements of Articles 4.13 and 4.14. 5.3 The water resistance test of the lamp shall comply with the requirements of Article 4.6. 6 Inspection rules
6.1 The inspection rules of this product shall comply with the relevant technical requirements of Chapter 6 of GB3107.1. 6.2 When this product is first produced without obtaining the certificate, 200 pieces are used as a batch; after obtaining the certificate, 400 pieces are used as a batch. 6.3 The factory inspection items, technical requirements and sampling quantity of this product are as required in the following table. No.
Inspection items
Bulb, lampshade
Power switch quality
Appearance quality of lamp holder
Appearance, logo, packaging
Waterproof performance
Light intensity test
Technical requirements
4.6, 4.11 and 4.12
Article 7 Chapter
Quantity of inspection
3% of each batch; but not less than 10 pieces
Not less than 3 pieces per batch
Not less than 3 pieces per batch
Not less than 3% of each batch
Not less than 3 pieces per batch
Not less than 3 pieces per batch
6.3.1 If the appearance of this product fails to meet the requirements during the factory inspection, double sampling will be conducted for re-inspection; if the re-inspection still fails to meet the requirements, the whole batch will be returned for repair and re-inspection. 6.3.2 If one of the performance of this product fails to meet the requirements, double sampling will be conducted for re-inspection; if the re-inspection still fails to meet the requirements, the whole batch will be scrapped. 559
GB4541—91
6.4 When the structure, process or material of this product is changed, or the production is transferred to another factory, various tests shall be carried out in accordance with the technical requirements specified in this standard. Marking, packaging, transportation and storage
The marking, packaging, transportation and storage of this product shall comply with the provisions of Chapter 7 of GB3107.1. Additional notes:
This standard is proposed by the Ministry of Communications of the People's Republic of China. This standard is under the jurisdiction of the Lifesaving Sub-Technical Committee of the National Technical Committee for Standardization of Marine Ships. This standard was drafted by the Standard Metrology Institute of the Ministry of Communications and Nanjiang Machinery Factory. The main drafters of this standard are Li Linfeng, Ning Guizhen, Liu Huiru, Li Jushun and Deng Senru. This standard was first issued in 1984 and revised in September 1990. 560
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