GB 4542-1991 Green Star Rocket Signal for Lifesaving GB4542-1991 Standard download decompression password: www.bzxz.net

National Standard of the People's Republic of China
Green star rocket signal for ships
Green star rocket signal for ships1 Subject content and scope of application
This standard specifies the type, basic parameters, technical requirements and inspection rules of the green star rocket signal. GB 4542-91
Replaces GB4542-84
This standard applies to the green star rocket signal used by lifeboats or maritime rescue agencies to guide people in distress, distressed boats, and Xiao to land when the ship is in distress and needs rescue. Its performance complies with 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 pyrotechnic signals for ships3 Product classification
3.1 Type and size
3.1.1 The green star rocket signal for ships is a flame-type pyrotechnic signal that is ignited by a rocket-propelled pull or percussion type. Its main components include: a.
rocket thruster;
green light signal body;
igniter;
shell and guide tube;
connector;
safety cover and top cover.
The signal body shall consist of ignition charge, ignition charge, signal charge, etc. 3. 1. 2
3.1.3The rocket thruster shall consist of rocket body, ignition charge, propellant and delay charge, etc. 3.1.4The outer diameter of the ship's green star rocket signal shall not exceed 50mm, the total length shall not exceed 295mm, and the total mass shall not exceed 450g. 3.2 Marking example
Use rocket thruster to emit green light with a light intensity of not less than 3000cd at a height of not less than 300m in the air, and the burning duration shall not be less than 8s. The mark of the Green Star Rocket Signal (LXJ) is:
LXJ 8-3 000 GB 4542---91
4 Technical requirements
4.1 The manufacture of the marine Green Star Rocket Signal shall comply with the technical requirements of Chapter 4 of GB3107.1. 4.2 The technical performance of the marine Green Star Rocket shall comply with: a. The rocket launch height shall not be less than 300m;
b. The green light intensity shall not be less than 3000cd;
The green light duration shall not be less than 8s.
4.3 This product shall be able to repeat 10 cycles at an ambient temperature of -30 to +65℃, and then function effectively at this ambient temperature. Approved by the State Bureau of Technical Supervision on May 22, 1991, and implemented on March 1, 1992
GB4542-91
4.4 This product should be able to withstand low temperature of -30°C and high temperature of +65°C, and can work effectively at this ambient temperature. 4.5 This product should be able to work effectively at any sea conditions with a high temperature of +65°C and a relative humidity of 90%. 4.6 This product should not be affected in its performance after being immersed in water for 5 minutes at a depth of 10 cm in the ready-to-fire state. 4.7 This product should be able to work effectively after being immersed in water at a depth of 1 m horizontally for 24 hours. 4.8 This product should be able to withstand the salt test of 20% NaCl solution. 4.9 This product is still in a safe state and works effectively after falling freely from a height of 2 m according to the specified test method. After ignition, its initial destructive force should be appropriate and should not harm the operator and any nearby personnel. 4.10 The burning appliance should be connected to the product as a whole. 5 Test methods
The test methods for this product shall comply with the provisions of Chapter 5 of GB3107.1. 6 Inspection rules
6.1 The inspection rules for this product shall comply with the provisions of Chapter 6 of GB3107.1. 6.2 When this product is first produced without a certificate of approval, each batch is 240 pieces. After obtaining a product certificate of approval, each batch is 480 pieces. 6.3 The items, technical requirements and sampling quantity of the product before delivery are as specified in the following table. No.
Inspection Item
Appearance Marking and Packaging
Water PerformancewwW.bzxz.Net
Technical Requirements
Article 6.1.6.3 and Chapter 7
Number of Inspections
Not less than 3% per batch, but not less than 10 pieces
Not less than 3 pieces per batch
Not less than 3 pieces per batch
6.3.1 If any item of appearance or assembly quality of this product fails to meet the standards during the factory inspection, it shall be re-inspected twice. If there is still one item that fails to meet the standards after the re-inspection, the whole batch shall be returned for repair and re-inspected.
6.3.2 If any item of performance of this product fails to meet the standards, it shall be re-inspected twice. If there is still one item that fails to meet the standards after the re-inspection, the whole batch shall be scrapped. 6.4 The light intensity test of this product shall be conducted every 5 batches of production and shall meet the requirements of 4.2b. 7 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 remarks:
This standard was 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 Vessels. This standard was drafted by the Standardization and Metrology Institute of the Ministry of Communications and Nanjiang Machinery Factory. The main drafters of this standard are Li Linfeng, Ning Guizhen, Liu Ru, Li Jushun and Deng Senru. This standard was first issued in 1984 and revised in September 1990. 562
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